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WO2010058842A1 - Imprimante - Google Patents

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Publication number
WO2010058842A1
WO2010058842A1 PCT/JP2009/069712 JP2009069712W WO2010058842A1 WO 2010058842 A1 WO2010058842 A1 WO 2010058842A1 JP 2009069712 W JP2009069712 W JP 2009069712W WO 2010058842 A1 WO2010058842 A1 WO 2010058842A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
roller
humidity
air
air supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/069712
Other languages
English (en)
Japanese (ja)
Inventor
隆介 木本
重雄 牧野
史人 梶谷
幸和 小路
義昭 神田
康紀 田邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008298371A external-priority patent/JP2012030364A/ja
Priority claimed from JP2008298372A external-priority patent/JP2012030365A/ja
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of WO2010058842A1 publication Critical patent/WO2010058842A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/22—Means for cooling or heating forme or impression cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices

Definitions

  • the present invention relates to a printing machine capable of adjusting the water content (water content) of water-based ink in a printing unit such as an offset sheet-fed printing machine or an offset rotary printing machine.
  • an offset rotary printing press includes a paper feeding device, an infeed device, a printing device, a drying device, a cooling device, a web pass device, a folding device, and a paper discharge device.
  • the paper feeding device has a reel stand on which two winding bodies (web rolls) are mounted, and a web that is drawn out of one winding body and is running is used as the web of the other winding body. By connecting, it has a printing machine that can continuously supply the web.
  • the in-feed device supplies a web drawn from a winding body of a paper feeding device to a printing device at a predetermined speed.
  • a printing apparatus generally includes four sets of printing units corresponding to four colors of black, cyan, magenta, and yellow, respectively, along the web traveling direction.
  • the drying device is for drying ink on the web printed by the printing device, and the cooling device is for cooling the web that stores excess heat after drying in the drying device to an appropriate temperature. It is.
  • the web pass device conveys the dried and cooled web, and the folding device cuts the web after being vertically folded and folds it to a predetermined size to form a folded book.
  • the paper device is to carry out the folded or folded book outside the apparatus.
  • a roll-shaped web is pulled out from the winding body by the paper feeding device, the web is supplied to the printing device at a predetermined speed by the infeed device, and multicolor printing is performed by each printing unit in the printing device,
  • the printed web is dried with ink by a drying device, cooled by a cooling device, conveyed through a web pass device, a signature is created by a folding device, and is carried out by a paper discharge device.
  • each printing unit of a printing apparatus in such an offset rotary printing machine has an ink supply device, an ink application roller, a plate cylinder, and a blanket cylinder on the top and bottom of a horizontally conveyed web. They are arranged symmetrically.
  • the ink supply device has an ink fountain device, and transfers ink from the ink fountain to an ink roller group via an ink source roller, an ink delivery roller, and the like, and thereafter supplies the ink fountain roller.
  • the inking roller, the plate cylinder, and the blanket cylinder are in contact with each other in order, and the plate cylinder has a plate mounted on the surface, and the blanket cylinder transfers the ink supplied to the plate cylinder to the web as a pattern. Can do.
  • the ink whose supply amount is adjusted by the ink source roller is supplied from the ink fountain to the calling roller, and is appropriately kneaded by the ink roller group, and after forming a thin film,
  • the ink supplied from the roller to the plate surface of the plate cylinder, the ink attached to the plate surface is transferred to the blanket cylinder, and the web is sandwiched between the opposed blanket cylinders, whereby a predetermined printing pressure is applied to the web and the blanket
  • the ink on the cylinder is transferred as a pattern.
  • oil-based ink In the printing unit of the printing apparatus described above, printing is performed using oil-based ink. Since the oil-based ink generally has high viscosity, a large number of kneading rollers are provided as an ink supply device, and a plurality of ink application rollers are provided. Therefore, the structure becomes large. Oil-based inks are mainly composed of pigments, ink resins, petroleum-based solvents, etc., and VOC (volatile organic solvents) are used as petroleum-based solvents, protecting the global environment and the working environment. This is not preferable. Therefore, it has been proposed to perform printing using water-based ink that does not contain VOC instead of oil-based ink.
  • VOC volatile organic solvents
  • Patent Document 1 As a printing machine using water-based ink, for example, there is one described in Patent Document 1 below.
  • an ink unit a plate cylinder that supports a printing plate suitable for containing water-based ink, a blanket cylinder that supports a printing blanket, and a printing plate and a printing blanket are provided.
  • a cooling unit is provided for maintaining one or more ink holding surfaces of the ink units at a predetermined temperature suitable for printing with water-based ink.
  • Patent Document 2 as a water content reduction means for reducing the water content of the water-based ink on the ink application roller, a cover for covering the transfer portion of the water-based ink on the ink application roller and a space portion covered by the cover are provided.
  • a dehumidifying device for dehumidifying is provided.
  • a cooling unit for maintaining a predetermined temperature suitable for printing using water-based ink a cover for covering a transfer portion of water-based ink in an ink application roller, and a space portion covered by the cover are provided.
  • a dehumidifying device is provided to dehumidify the water.
  • the present invention solves the above-described problems, and by adjusting the water content of the ink in each roller in the printing unit, good ink transfer properties and image forming properties are ensured to improve the printing quality.
  • An object is to provide a printing press.
  • a printing machine includes an ink supply means for supplying water-based ink or water-soluble ink, an ink roller group for receiving ink from the ink supply means, and the ink roller.
  • Humidity adjustment air supply means for supplying humidity adjustment air to the contact portion from the downstream side in the rotation direction is provided.
  • the ink supply means includes an ink storage section that stores a preset aqueous ink or water-soluble ink having a predetermined viscosity, and an ink source roller that supplies ink from the ink storage section.
  • the ink roller group includes: a delivery roller that delivers the ink of the ink base roller; a kneading roller that kneads the ink delivered from the delivery roller; and the ink kneaded by the kneading roller in the width direction.
  • the humidity control air supply means supplies the humidified air from the downstream side in the rotational direction to a contact portion between the ink base roller and the delivery roller.
  • the humidity control air supply means supplies dehumidified air from the downstream side in the rotational direction to a contact portion between the plate cylinder and the blanket cylinder.
  • a humidity detector that detects the atmospheric humidity, and a control that sets the humidity of the humidity-controlled air supplied by the humidity-controlled air supply unit based on the atmospheric humidity detected by the humidity detector. Means.
  • the humidity control air supply means includes a humidity control air source for generating humidity control air, and a roller shaft facing a contact portion of at least one set of rollers in the ink roller group. It has the injection nozzle arrange
  • the jet nozzle is provided with a jet amount adjusting means.
  • the fan is a sirocco fan.
  • a humidified air supply means for supplying humidified air to the blanket cylinder or the printing paper.
  • a humidity control air recovery means for recovering the humidity control air supplied to the contact portion of the roller by the humidity control air supply means and returning it to the humidity control air supply means. It is characterized by.
  • the humidity control air supply means collects the supply humidity detector for detecting the humidity of the humidity control air supplied to the contact portion of the roller, and the humidity control air recovery means collects the humidity control air.
  • a recovery humidity detector for detecting the humidity of the humidity-controlled air; and the control means is configured to supply the humidity-controlled air based on detection results of the ambient humidity detector, the supply humidity detector, and the recovery humidity detector. It is characterized by controlling.
  • the recovery path for returning the humidified air recovered by the humidity-controlled air recovery means to the humidity-controlled air supply means, and the humidified air recovered by the humidity-controlled air recovery means are used for the control.
  • an external air intake path is provided in the humidified air supply path by the humidity control air supply means, and the control means includes the atmospheric humidity detector and the recovered humidity detector.
  • An outside air intake amount from the outside air intake route is controlled based on a detection result.
  • the printing machine of the fourteenth aspect of the present invention is an ink supply means for supplying water-based ink or water-soluble ink, an ink roller group to which ink is transferred from the ink supply means, and a plate to which ink is transferred from the ink roller group A cylinder, a blanket cylinder that contacts the plate cylinder and transfers the ink supplied to the plate cylinder as a pattern onto a printing paper, and a downstream of the rotation direction of the at least one pair of rollers in the ink roller group And air supply means for supplying air of appropriate humidity from the side.
  • an ink supply unit that supplies water-based ink or water-soluble ink, an ink roller group that receives ink from the ink supply unit, and a plate that receives ink from the ink roller group A cylinder, a blanket cylinder that transfers the ink supplied to the plate cylinder in contact with the plate cylinder onto the printing paper as a pattern, and a contact section of at least one set of rollers in the ink roller group are adjusted from the downstream side in the rotation direction.
  • Humidified air supply means for supplying humid air is provided.
  • the humidity control air supply means is The humidity control air is supplied from the downstream side in the rotation direction to the contact portion of at least one pair of rollers in the ink roller group. Therefore, the humidity-controlled air supplied to the contact portion of the roller is accompanied by the flow of the peripheral surface generated by the rotation of the roller, and flows along the peripheral surface of the pair of rollers, thereby adhering to the surface of the roller.
  • the amount of water in the ink is adjusted, so that good transferability of the ink can be secured, and good image forming properties can be secured, and as a result, the printing quality can be improved.
  • the ink storage unit and the ink base roller are provided as the ink supply means, and the delivery roller, the kneading roller, the reciprocating roller, and the ink application roller are provided as the ink roller group, and the humidity control air supply
  • the means supplies humid air from the downstream side in the rotation direction to the contact portion between the kneading roller and the reciprocating roller or the contact portion between the reciprocating roller and the ink application roller, so that the water in the ink is relatively easy to evaporate.
  • the moisture content in the ink is adjusted so as to increase, and good transferability of the ink can be ensured.
  • the humidity control air supply means supplies the humid air from the downstream side in the rotation direction to the contact portion between the ink source roller and the delivery roller, so that the ink source roller and the delivery Since the water in the ink is relatively easy to evaporate due to slip at the contact portion with the roller, the moisture content in the ink is adjusted to increase by supplying humidified air here. Transferability can be ensured.
  • the humidity control air supply means supplies the dehumidified air from the downstream side in the rotational direction to the contact portion between the plate cylinder and the blanket cylinder, so that the moisture in the ink is excessive.
  • the humidity detector for detecting the atmospheric humidity and the control for setting the humidity of the humidity-controlled air supplied by the humidity-controlled air supply means based on the atmospheric humidity detected by the humidity detector. Therefore, the humidity control air supply means can supply the humidity control air having an appropriate humidity corresponding to the atmospheric humidity, and can appropriately adjust the water content in the ink adhered to the surface of the roller.
  • the humidity control air supply means for generating the humidity control air and the roller shaft facing the contact portion of at least one set of rollers in the ink roller group as the humidity control air supply means Since the spray nozzles arranged along the direction and the fan that supplies the humidity control air from the humidity control air source to the spray nozzles are provided, uniform humidity control air is supplied to the roller axial direction at the roller contact part. can do.
  • the ejection amount adjusting means is provided in the ejection nozzle, the amount of humidified air can be adjusted according to the amount of ink adhering in the roller axial direction, and the roller at the contact portion of the roller Humidity control air appropriate for the axial direction can be supplied.
  • the fan is a sirocco fan, the structure can be simplified.
  • the humidified air supply means for supplying humidified air to the blanket cylinder or the printing paper is provided, the separation of the printing paper from the blanket cylinder is improved, and the flapping of the printing paper is suppressed. be able to.
  • the humidity control air recovery means is provided for recovering the humidity control air supplied to the contact portion of the roller by the humidity air supply means and returning it to the humidity control air supply means.
  • Humidified air supplied to the contact portion of the roller by the humidified air supply means is recovered by the conditioned air recovery means and returned to the conditioned air supply means, so that the generated conditioned air can be reused. Work costs can be reduced.
  • the humidity control air supply means detects the humidity of the humidity control air supplied to the contact portion of the roller, and the humidity control air recovery means recovers the humidity.
  • a recovery humidity detector for detecting the humidity of the humid air, and the control means controls the humidity control air supply means based on the ambient humidity, the supply humidity and the recovery humidity. Based on the humidity of the collected humidity-controlled air, the humidity-controlled air with an appropriate humidity is supplied, and the driving cost can be reduced by appropriately controlling the capacity of the humidity-controlled air supply means.
  • the recovery path for returning the humidified air recovered by the humidity control air recovery means to the humidity control air supply means, and the humidified air recovered by the humidity control air recovery means A detour path that supplies the contact portion of the roller without returning to the supply section, and a switching section that switches between the collection path and the detour path are provided, and the control section controls the switching section based on the atmospheric humidity and the collection humidity. If the humidity of the collected humidified air is within the appropriate humidity range, the humidified air supply means will be supplied to the contact part of the roller through the bypass route without returning to the humidity control air supply means. The driving cost can be reduced.
  • the outside air intake path for taking in the outside air is provided in the humidified air supply path, and the control means is the outside air intake amount from the outside air intake path based on the atmospheric humidity and the recovered humidity. Therefore, when the atmospheric humidity changes, the driving cost can be reduced by appropriately controlling the ability of the humidity control air supply means by taking in the outside air from the outside air intake path.
  • the ink supply means for supplying water-based ink or water-soluble ink, the ink roller group to which ink is transferred from the ink supply means, and the ink is transferred from the ink roller group.
  • an air supply means for supplying air of appropriate humidity.
  • the air supply means Air of appropriate humidity is supplied from the downstream side in the rotation direction to the contact portion of at least one pair of rollers in the roller group. For this reason, air of appropriate humidity supplied to the contact portion of the roller accompanies the flow of the peripheral surface generated by the rotation of the roller and flows along the peripheral surface of the pair of rollers. The amount of water in the attached ink will be adjusted, it will be possible to ensure good transferability of the ink, and it will be possible to ensure good image formability, and as a result, the print quality can be improved. .
  • FIG. 1 is a schematic configuration diagram illustrating a printing unit in a printing press according to a first embodiment of the invention.
  • FIG. 2 is a schematic diagram for explaining the flow of humidified air.
  • FIG. 3 is a schematic configuration diagram illustrating the printing machine according to the first embodiment.
  • FIG. 4 is a schematic diagram illustrating a main part of a printing unit in the printing press according to the second embodiment of the present invention.
  • FIG. 5 is a schematic diagram illustrating an ejection nozzle in a printing press according to a third embodiment of the present invention.
  • FIG. 6 is a plan view illustrating an injection nozzle according to the third embodiment.
  • FIG. 7 is a schematic diagram illustrating an ejection nozzle in a printing press according to a fourth embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram illustrating a printing unit in a printing press according to a first embodiment of the invention.
  • FIG. 2 is a schematic diagram for explaining the flow of humidified air.
  • FIG. 3 is
  • FIG. 8 is a plan view illustrating an injection nozzle according to the fourth embodiment.
  • FIG. 9 is a schematic configuration diagram illustrating a printing unit in the printing press according to the fifth embodiment of the present invention.
  • FIG. 10 is a schematic diagram for explaining the flow of humidified air.
  • FIG. 11 is a schematic configuration diagram illustrating a main part of a printing unit in a printing press according to a sixth embodiment of the present invention.
  • FIG. 12 is a schematic configuration diagram illustrating a main part of a printing unit in a printing press according to a seventh embodiment of the present invention.
  • FIG. 1 is a schematic configuration diagram illustrating a printing unit in a printing press according to a first embodiment of the present invention
  • FIG. 2 is a schematic diagram for explaining the flow of humidified air
  • FIG. 3 is a printing press according to the first embodiment.
  • the printing machine of Example 1 is an offset rotary printing machine using water-based ink, and as shown in FIG. 3, a paper feeding device 11, an infeed device 12, a printing device 13, a drying device 14, It comprises a cooling device 15, a web pass device 16, a folding device 17, and a paper discharge device 18.
  • the paper feeding device 11 has a reel stand on which two winding bodies (web rolls) are mounted.
  • the web (printing paper) that is drawn out from one winding body and travels is transferred to the other winding body.
  • the infeed device 12 supplies the web of the paper feeding device 11 to the printing device 13 side.
  • the printing apparatus 13 includes four printing units 21, 22, 23, and 24 for four water-based ink colors, black, cyan, magenta, and yellow, in the web running direction. It is arranged side by side along.
  • the drying device 14 is for drying the water-based ink on the web printed by the printing device 13, and the cooling device 15 is an appropriate web for storing excessive heat after drying in the drying device 14.
  • the web pass device 16 conveys a dried and cooled web, and the folding device 17 cuts the web after being vertically folded and folds it to a predetermined size to form a folded book.
  • the paper discharge device 18 carries out the folded or folded book outside the apparatus.
  • the roll-shaped web W is pulled out from the winding body by the paper feeding device 11 and is supplied to the printing device 13 by the infeed device 12, and in this printing device 13, by each printing unit 21, 22, 23, 24.
  • the multicolor printing is performed, and the printed web W is dried with the water-based ink by the drying device 14, cooled by the cooling device 15, transported through the web pass device 16, and the folding device 17 creates a signature, It is carried out by the paper discharge device 18.
  • each printing unit 21, 22, 23, 24 is a double-sided printing machine that simultaneously prints on the front and back surfaces of the web W, and uses the color of the water-based ink to be used ( The only difference is the ink, indigo, red, yellow), and the structure is almost the same. Therefore, in the following description, only the structure which prints on the surface of the web W in one printing unit 21 is demonstrated.
  • a blanket cylinder 31 is disposed above the conveyance path of the web W, and a plate cylinder 32 is disposed in contact with the blanket cylinder 31.
  • An ink roller group 33 and an ink supply device 34 are disposed above the plate cylinder 32.
  • the ink supply device 34 has a predetermined viscosity, that is, an ink fountain 35 serving as an ink storage part for storing water-based ink or water-soluble ink having a predetermined moisture content, and metering from the ink fountain 35 by an ink key (not shown). And an ink source roller 36 for supplying the used ink.
  • the ink roller group 33 includes a delivery roller 37 that delivers ink from the ink source roller 36, a kneading roller 38 that kneads the ink delivered from the delivery roller 37, and the ink kneaded by the kneading roller 38 in the width direction.
  • a reciprocating roller 39 that spreads, and an ink application roller 40 that supplies the ink transferred from the reciprocating roller 39 to the plate cylinder 32 are provided.
  • the plate cylinder 32 is a metal roller having a plate (not shown) mounted on the surface
  • the blanket cylinder 31 is a rubber roller having a blanket mounted as a resilient portion on the surface.
  • the ink base roller 36, the delivery roller 37, the kneading roller 38, the reciprocating roller 39, the ink application roller 40, the plate cylinder 32, and the blanket cylinder 31 are in contact with each other in series.
  • the water-based ink whose supply amount is adjusted by the ink source roller 36 is supplied from the ink fountain 35 to the delivery roller 37 and is appropriately kneaded by passing through the kneading roller 38 and the reciprocating roller 39 to form a thin film.
  • the ink is supplied to the printing roller 40, supplied to the plate surface of the plate cylinder 32 from the ink coating roller 40, the ink attached to the plate surface is transferred to the blanket cylinder 31, and a predetermined amount is applied to the web W between the blanket cylinder 41 for printing on the back side.
  • the ink of the blanket cylinder 31 can be transferred to the surface of the web W as a pattern.
  • a water flow mechanism (not shown) for passing water is provided for the reciprocating roller 39, and the water evaporation of ink is controlled by controlling the temperature of the surface of the reciprocating roller 39 by this water flow mechanism.
  • the printing unit 21 in the offset rotary printing press of this embodiment configured as described above is supplied with humidity-conditioned air from the downstream side in the rotational direction to the contact portion of at least one set of rollers in the ink roller group 33.
  • Humid air supply means is provided.
  • the contact portion between the kneading roller 38 and the reciprocating roller 39 is provided with the first injection nozzle 51 located downstream in the rotational direction, and the contact portion between the reciprocating roller 39 and the ink application roller 40.
  • a third jet nozzle 53 is provided at a contact portion between the ink base roller 36 and the delivery roller 37 at a downstream side in the rotation direction.
  • a fourth injection nozzle 54 is provided at the contact portion between the plate cylinder 32 and the blanket cylinder 31 at a downstream side in the rotational direction.
  • Fans 55 to 58 are connected to each of the injection nozzles 51 to 54.
  • Each of the fans 55 to 57 is connected to a humidified air supply source 62 by a humidified air supply line 59 to 61.
  • the fan 58 is connected to a dehumidified air supply line 63.
  • the dehumidified air supply source 64 is connected.
  • the lines 59 to 61 and 63 are provided with flow rate adjusting valves 65 to 68, respectively.
  • the first spray nozzle 51 increases the moisture content of the ink on the kneading roller 38 and the reciprocating roller 39 by supplying humidified air to the contact portion between the kneading roller 38 and the reciprocating roller 39 from the downstream side in the rotation direction. It is something to be made.
  • the second ejection nozzle 52 supplies humidified air from the downstream side in the rotational direction to the contact portion between the reciprocating roller 39 and the ink deposition roller 40, so that the amount of ink water on the reciprocating roller 39 and the ink deposition roller 40 is Is to increase.
  • the third ejection nozzle 53 supplies the humid air from the downstream side in the rotation direction to the contact portion between the ink base roller 36 and the delivery roller 37, so that the water content of the ink on the ink base roller 36 and the delivery roller 37 is reached. Is to increase.
  • the fourth spray nozzle 54 supplies dehumidified air from the downstream side in the rotational direction to the contact portion between the plate cylinder 32 and the blanket cylinder 31 to reduce the water content of the ink on the plate cylinder 32 and the blanket cylinder 31. It is something to be made. Specifically, the humidified air is nano mist or mist, and the dehumidified air is dry air.
  • the fans 55 to 58, the flow rate adjusting valves 65 to 68, the humidified air supply source 62, and the dehumidified air supply source 64 can be controlled by the control device 69.
  • a humidity detector 70 for detecting the atmospheric humidity in the printing unit 21 is provided, and the control device 69 controls the humidity-controlled air supplied by the ejection nozzles 51 to 54 based on the atmospheric humidity detected by the humidity detector 70. The humidity is controlled to be optimum.
  • the control device 69 controls the fans 55 to 58, the flow rate adjusting valves 65 to 68, the humidified air supply source 62, and the dehumidified air supply source 64 according to the atmospheric humidity of the printing unit 21.
  • the humidified air supply source 62 is driven and controlled so that the atmospheric humidity of the printing unit 21 becomes an appropriate humidity (for example, 60%), and the humidity of the humidified air ejected by the ejection nozzles 51 to 53 is adjusted.
  • the control device 69 may control the fans 55 to 58, the flow rate adjusting valves 65 to 68, the humidified air supply source 62, and the dehumidified air supply source 64 in accordance with the ink components (water content, etc.) used. Good.
  • the ink stored in the ink fountain 35 is composed of water, pigment, resin, etc., and its moisture content (water content) is set so as to ensure good transferability between rolls.
  • the water-based ink metered by the ink base roller 36 is supplied from the ink fountain 35 to the ink application roller 40 via the delivery roller 37, the kneading roller 38, and the reciprocating roller 39.
  • the ink is set to a moisture content (water content) that can ensure good transferability (ink fluidity), and is appropriately supplied to the ink application roller 40.
  • the third ejection nozzle 53 supplies humid air to the contact portion between the ink base roller 36 and the delivery roller 37 from the downstream side in the rotation direction.
  • the ink base roller 36 and the delivery roller 37 have different rotational speeds, so that slip occurs and water easily evaporates from the ink. Therefore, the water content is increased with respect to the ink on the ink source roller 36 and the delivery roller 37.
  • the first injection nozzle 51 supplies humid air from the downstream side in the rotational direction to the contact portion between the kneading roller 38 and the reciprocating roller 39.
  • the second ejection nozzle 52 supplies humidified air to the contact portion between the reciprocating roller 39 and the ink application roller 40 from the downstream side in the rotation direction.
  • the reciprocating roller 39 easily evaporates moisture from the ink by passing water. Therefore, the water content of the ink on the kneading roller 38, the reciprocating roller 39, and the ink applying roller 40 is increased.
  • the flow of the humidified air injected from each of the injection nozzles 51 to 53 will be described.
  • the humidified air supplied from the downstream side in the rotation direction to the contact portion between the reciprocating roller 39 and the ink application roller 40 from the second ejection nozzle 52 is rotated by the rollers 39 and 40. Flows along the peripheral surfaces of the rollers 39 and 40. That is, the humidified air is bound to the circumferential surfaces of the reciprocating roller 39 and the ink application roller 40 along the rotation direction, and the moisture content is increased with respect to the ink adhering to the surfaces of the rollers 39 and 40. , Good transferability of the ink is ensured.
  • the water content of the ink transferred from the ink roller group 33 by the first jet nozzle 51, the second jet nozzle 52, and the third jet nozzle 53 is adjusted appropriately, the water-based ink on the plate cylinder 32 is The moisture content is in an increased state, the fluidity is improved and the transferability is excellent, and an appropriate ink pattern can be transferred to the surface of the blanket cylinder 31.
  • the ink supplied to the ink application roller 40 is transferred to the plate cylinder 32 that is in contact with the plate cylinder 32, and the ink transferred to the plate cylinder 32 is transferred to the blanket cylinder 31 by the rotation of the plate cylinder 32.
  • the fourth injection nozzle 54 supplies dehumidified air from the downstream side in the rotation direction to the contact portion between the plate cylinder 32 and the blanket cylinder 31.
  • the blanket cylinder 31 is rotated, and the pattern of the ink transferred to the blanket cylinder 31 reaches the web W, a predetermined printing pressure is applied to the web W between the blanket cylinder 41 that performs back side printing.
  • the ink pattern on the blanket cylinder 31 is transferred to the surface of the web W.
  • the transfer property and image formability of the water-based ink are directly related to the print quality, and the operator can control the driving of the humidified air supply source 62 and the dehumidified air supply source 64 according to the atmospheric state of the printing unit 21 (ON). / OFF control or capability control) must be performed.
  • the printing unit 21 in the offset rotary printing press according to the present embodiment is a double-sided printing machine that simultaneously prints the front and back surfaces of the web W.
  • a blanket cylinder 41, a plate cylinder, an ink roller group, an ink supply device, a jet nozzle, and the like are arranged, and printing is performed while adjusting the water content of the ink.
  • the offset rotary printing press of the present embodiment has four printing units 21, 22, 23, and 24, and the other printing units 22, 23, and 24 perform the same work.
  • the ink fountain 35, the ink base roller 36, the delivery roller 37, the kneading roller 38, the reciprocating roller 39, the ink application roller 40, the plate cylinder 32, and the blanket cylinder 31 are connected in series.
  • a first jet nozzle 51 configured to be in contact with each other and supplying humidified air from the downstream side in the rotational direction to a contact portion between the kneading roller 38 and the reciprocating roller 39 as humidity control air supply means, the reciprocating roller 39 and ink.
  • a second spray nozzle 52 that supplies humid air from the downstream side in the rotation direction is provided at a contact portion with the landing roller 40.
  • the first ejection nozzle 51 supplies humidified air to the contact portion between the kneading roller 38 and the reciprocating roller 39 from the downstream side in the rotational direction
  • the second spray nozzle 52 is provided at the contact portion between the reciprocating roller 39 and the ink application roller 40. Humidified air is supplied from the downstream side in the rotation direction.
  • the humidity-controlled air supplied to the contact portion of the roller is accompanied by the flow of the peripheral surface generated by the rotation of the roller, and flows along the peripheral surface of the pair of rollers, thereby adhering to the surface of the roller.
  • the amount of water in the ink is adjusted, so that good transferability of the ink can be secured, and good image forming properties can be secured, and as a result, the printing quality can be improved.
  • the first ejection nozzle 51 that supplies humid air from the downstream side in the rotation direction to the contact portion between the kneading roller 38 and the reciprocating roller 39.
  • at least one of the second jet nozzle 52 for supplying humid air from the downstream side in the rotation direction may be provided at the contact portion between the reciprocating roller 39 and the ink adhering roller 40.
  • the moisture content is adjusted so as to increase, and good transferability of the ink can be ensured.
  • the humidified air can be supplied over the entire circumference of the reciprocating roller 39, and further good transferability can be ensured.
  • the third jet nozzle 53 that supplies humid air from the downstream side in the rotation direction is provided at the contact portion between the ink base roller 36 and the delivery roller 37.
  • the moisture in the ink is relatively easy to evaporate due to slipping, so that the moisture content in the ink is adjusted to increase by supplying humidified air here. As a result, good transferability of the ink can be ensured.
  • the fourth injection nozzle 54 for supplying dehumidified air from the downstream side in the rotation direction is provided at the contact portion between the plate cylinder 32 and the blanket cylinder 31.
  • the humidity detector 70 for detecting the atmospheric humidity and the humidity of the humidity-controlled air supplied by each of the ejection nozzles 51 to 54 are set based on the atmospheric humidity detected by the humidity detector 70.
  • a control device 69 is provided. Accordingly, each of the ejection nozzles 51 to 54 can supply humidity-controlled air having an appropriate humidity corresponding to the atmospheric humidity, and can appropriately adjust the amount of water in the ink adhering to the surface of the roller.
  • FIG. 4 is a schematic diagram showing the main part of the printing unit in the printing press according to the second embodiment of the present invention.
  • the configuration of the printing machine and the printing unit of the present embodiment is almost the same as that of the first embodiment described above, and will be described with reference to FIG. 1 and a member having the same function as that described in this embodiment. Are denoted by the same reference numerals and redundant description is omitted.
  • the printing unit 21 is provided with a fifth injection nozzle 71 as humidified air supply means for supplying humidified air to the blanket cylinder 31 or the web W. .
  • the fifth injection nozzle 71 is provided on the upstream side in the rotational direction.
  • the fifth injection nozzle 71 is connected to a fan, a humidified air supply line, a flow rate adjustment valve, and a humidified air supply source (not shown), as with the injection nozzles 51 to 54 in the first embodiment described above.
  • the fifth jet nozzle 71 increases the amount of water on the ink surface of the blanket cylinder 31 or the surface of the web W by supplying humidified air from the upstream side in the rotational direction to the contact portion between the blanket cylinder 31 and the web W. It is something to be made.
  • the fifth jet nozzle 71 causes the contact portion between the blanket cylinder 31 and the web W to move.
  • Supply humidified air to Then, the amount of water on the ink surface of the blanket cylinder 31 or the surface of the web W increases, so that the ink pattern on the blanket cylinder 31 is easily transferred to the surface of the web W, and the web W is separated from the blanket cylinder 31.
  • delamination that is, flapping of the web W is suppressed.
  • the fifth injection nozzle 71 for supplying humid air to the blanket cylinder 31 or the web W is provided. Therefore, the separation property of the web W with respect to the blanket cylinder 31 is improved, and flapping of the web W can be suppressed.
  • FIG. 5 is a schematic view showing an injection nozzle in a printing press according to a third embodiment of the present invention
  • FIG. 6 is a plan view showing the injection nozzle of the third embodiment.
  • symbol is attached
  • the spray nozzle 81 as humidity control air supply means faces the contact portion between the reciprocating roller 39 and the ink application roller 40 (ink roller group), And it arrange
  • the injection nozzle 81 has a sirocco fan 83 built in a box-shaped housing 82 and has a drive motor 84 for driving the sirocco fan 83, and a blowout port (a slit or a plurality of openings) is provided at the tip of the housing 82. ) 85 is formed.
  • the housing 82 has divided housings 82a, 82b, and 82c that are divided into three in the longitudinal direction, and branch portions 86a and 86b of the humidified air pipe 86 are provided on the back surfaces of the divided housings 82a, 82b, and 82c. , 86c are connected.
  • the sirocco fan 83 when driven and rotated by the drive motor 84, the humidified air is supplied from the branch portions 86a, 86b, 86c of the humidified air pipe 86 to the divided housings 82a, 82b, 82c of the housing 82. It can be supplied from the downstream side in the rotational direction to the contact portion of the reciprocating roller 39 and the ink application roller 40 from the outlet 85.
  • the jet nozzle 81 that supplies humid air from the downstream side in the rotation direction to the contact portion between the reciprocating roller 39 and the ink adhering roller 40 is connected to the reciprocating roller 39 and the ink adhering roller.
  • a sirocco fan 83 is provided along the roller axis direction of the roller 40 to supply humidified air from a humidified air supply source to the spray nozzle 81 and blow out from the blowout port 85. Therefore, uniform humidified air can be supplied in the axial direction at the contact portion between the reciprocating roller 39 and the ink applying roller 40.
  • the configuration of the housing 82 in the injection nozzle 81 is not limited to the above-described configuration.
  • FIG. 7 is a schematic view showing an injection nozzle in a printing press according to a fourth embodiment of the present invention
  • FIG. 8 is a plan view showing the injection nozzle of the fourth embodiment.
  • symbol is attached
  • the jet nozzle 91 as the humidity control air supply means faces the contact portion between the reciprocating roller 39 and the ink application roller 40 (ink roller group), And it arrange
  • the injection nozzle 91 has a sirocco fan 83 built in a box-shaped housing 82 and has a drive motor 84 for driving the sirocco fan 83, and a blowout port 85 is formed at the tip of the housing 82.
  • a fan 92 as an injection amount adjusting device is provided at the outlet 85 of the housing 82.
  • a plurality of the fans 92 are provided along the longitudinal direction of the outlet 85 of the housing 82 and can be controlled independently.
  • the sirocco fan 83 when driven and rotated by the drive motor 84, the humidified air is supplied from the branch portions 86a, 86b, 86c of the humidified air pipe 86 to the divided housings 82a, 82b, 82c of the housing 82. It can be supplied from the downstream side in the rotation direction to the contact portion between the reciprocating roller 39 and the ink applying roller 40 from the blowout port 85. At this time, by independently controlling the plurality of fans 92 provided at the outlet 85, different amounts are obtained in the axial direction (width direction of the web W) at the contact portion between the reciprocating roller 39 and the ink application roller 40. Of humidified air.
  • the amount of ink supplied to the reciprocating roller 39 and the ink application roller 40 is determined by the ink key opening set according to the pattern to be printed. Therefore, a large amount of humidified air is supplied to a portion where the amount of ink supplied is large, and a small amount of humidified air is supplied to a portion where the amount of ink is small.
  • the jet nozzle 91 that supplies humid air from the downstream side in the rotation direction to the contact portion between the reciprocating roller 39 and the ink adhering roller 40 includes the reciprocating roller 39 and the ink adhering roller.
  • a sirocco fan 83 is provided along the roller axial direction of the roller 40 to supply humidified air from a humidified air supply source to the jet nozzle 91 and blown from the blowout port 85, and a plurality of fans 92 are provided at the blowout port 85. Yes. Therefore, different amounts of humidified air can be supplied in the axial direction at the contact portion between the reciprocating roller 39 and the ink applying roller 40, and humidified air corresponding to the amount of ink supplied can be supplied. .
  • FIG. 9 is a schematic configuration diagram showing a printing unit in a printing press according to Embodiment 5 of the present invention
  • FIG. 10 is a schematic diagram for explaining the flow of humidified air.
  • symbol is attached
  • the printing unit 21 collects the humidity-controlled air supplied to the contact portion of the pair of rollers by the humidity-controlled air supply means to adjust the humidity.
  • Humidity control air recovery means for returning to the air supply means is provided.
  • first suction nozzles 171a and 171b are provided, respectively.
  • Second suction nozzles 172a and 172b are provided in the vicinity of the contact portion between the reciprocating roller 39 and the ink application roller 40 in the vicinity of the downstream side in the rotational direction along the peripheral surfaces of the rollers 39 and 40, respectively. ing.
  • Third suction nozzles 173a and 173b are provided in the vicinity of the downstream side in the rotational direction along the peripheral surfaces of the rollers 36 and 37 with respect to the contact portion between the ink source roller 36 and the delivery roller 37, respectively. ing. Further, fourth suction nozzles 174a and 174b are provided in the vicinity of the downstream side in the rotational direction along the peripheral surfaces of the rollers 32 and 31 with respect to the contact portion between the plate cylinder 32 and the blanket cylinder 31, respectively. It has been.
  • Fans 175 to 178 are connected to the suction nozzles 171a to 174b.
  • the fans 175 to 177 are connected to the humidified air supply source 62 by the humidified air recovery lines 179 to 181.
  • the fan 178 is connected to the dehumidified air recovery line 182. To the dehumidified air supply source 64.
  • the first suction nozzles 171a and 171b suck and collect the humidified air supplied to the contact portion between the kneading roller 38 and the reciprocating roller 39.
  • the second suction nozzles 172a and 172b suck and collect the humidified air supplied to the contact portion between the reciprocating roller 39 and the ink application roller 40.
  • the third suction nozzles 173 a and 173 b suck and collect the humidified air supplied to the contact portion between the ink base roller 36 and the delivery roller 37.
  • the fourth suction nozzles 174 a and 174 b suck and collect the dehumidified air supplied to the contact portion between the plate cylinder 32 and the blanket cylinder 31.
  • a supply humidity detector 191 that detects the humidity of the humidified air that each of the injection nozzles 51 to 53 supplies to the contact portion of the roller, and a recovery humidity that detects the humidity of the humidified air collected by each of the suction nozzles 171a to 173b.
  • the control device 69 includes an atmospheric humidity detected by the atmospheric humidity detector 70, a supplied humidified air humidity detected by the supplied humidity detector 191, and a recovered humidified air humidity recovered by the recovered humidity detector 192. Based on the above, the humidity of the humidified air supplied from each of the injection nozzles 51 to 53 is controlled to be optimum.
  • the humidified air supply source 62 is driven and controlled so that the atmospheric humidity of the printing unit 21 becomes an appropriate humidity (for example, 60%).
  • the humidified air is set so that the humidity of the collected humidified air becomes the appropriate humidity.
  • the drive of the supply source 62 is controlled. That is, when the appropriate humidity is 60% and the atmospheric humidity is 40%, the humidified air supply source 62 needs to increase the moisture by + 20%. However, if the recovered humidified air humidity is 50%, the humidified air supply source 62 need only increase + 10% of moisture.
  • the ink stored in the ink fountain 35 is composed of moisture, pigment, resin, etc., and its moisture content (water content) is set so as to ensure good transferability between rolls.
  • the water-based ink metered by the ink base roller 36 is supplied from the ink fountain 35 to the ink application roller 40 via the delivery roller 37, the kneading roller 38, and the reciprocating roller 39.
  • the ink is set to a moisture content (water content) that can ensure good transferability (ink fluidity), and is appropriately supplied to the ink application roller 40.
  • the third ejection nozzle 53 supplies humid air to the contact portion between the ink base roller 36 and the delivery roller 37 from the downstream side in the rotation direction.
  • the ink base roller 36 and the delivery roller 37 have different rotational speeds, so that slip occurs and water easily evaporates from the ink. Therefore, the water content is increased with respect to the ink on the ink source roller 36 and the delivery roller 37.
  • the third ejection nozzle 53 supplies the contact portion between the ink source roller 36 and the delivery roller 37 to suck the humid air that is associated with each of the rollers 36 and 37. Return to source 62.
  • the first injection nozzle 51 supplies humid air from the downstream side in the rotational direction to the contact portion between the kneading roller 38 and the reciprocating roller 39.
  • the second ejection nozzle 52 supplies humidified air to the contact portion between the reciprocating roller 39 and the ink application roller 40 from the downstream side in the rotation direction.
  • the reciprocating roller 39 easily evaporates moisture from the ink by passing water. Therefore, the water content of the ink on the kneading roller 38, the reciprocating roller 39, and the ink applying roller 40 is increased.
  • the first injection nozzle 51 supplies the contact portion between the kneading roller 38 and the reciprocating roller 39 to suck the humid air that is associated with each of the rollers 38 and 39, thereby supplying the humid air.
  • the second suction nozzles 172a and 172b are supplied to the contact portion between the reciprocating roller 39 and the ink application roller 40 by the second injection nozzle 52, and suck the humidified air associated with each of the rollers 39 and 40. Return to source 62.
  • the flow of the humidified air injected from each of the injection nozzles 51 to 53 will be described.
  • the humidified air supplied from the second jet nozzle 52 to the contact portion between the reciprocating roller 39 and the ink application roller 40 from the downstream side in the rotation direction is rotated by the rollers 39 and 40. Flows along the peripheral surfaces of the rollers 39 and 40. That is, the humidified air is bound to the circumferential surfaces of the reciprocating roller 39 and the ink application roller 40 along the rotation direction, and the moisture content is increased with respect to the ink adhering to the surfaces of the rollers 39 and 40. , Good transferability of the ink is ensured.
  • the humidified air that is ejected from the second ejection nozzle 52 and supplied from the downstream side in the rotational direction to the contact portion between the reciprocating roller 39 and the ink application roller 40 is along the peripheral surface of each of the rollers 39 and 40.
  • the contained water is taken up by the ink and the humidity is slightly reduced.
  • the second suction nozzle 172a sucks a part of the humidified air that is associated with the circumferential surface of the reciprocating roller 39 along the rotation direction and returns it to the humidified air supply source 62, whereby the humidified air can be reused.
  • the water content of the ink transferred from the ink roller group 33 by the first jet nozzle 51, the second jet nozzle 52, and the third jet nozzle 53 is adjusted appropriately, the water-based ink on the plate cylinder 32 is The moisture content is in an increased state, the fluidity is improved and the transferability is excellent, and an appropriate ink pattern can be transferred to the surface of the blanket cylinder 31.
  • the ink supplied to the ink application roller 40 is transferred to the plate cylinder 32 that is in contact with the plate cylinder 32, and the ink transferred to the plate cylinder 32 is transferred to the blanket cylinder 31 by the rotation of the plate cylinder 32.
  • the fourth injection nozzle 54 supplies dehumidified air from the downstream side in the rotation direction to the contact portion between the plate cylinder 32 and the blanket cylinder 31.
  • the fourth suction nozzles 174a and 174b supply the dehumidified air by supplying the dehumidified air supplied to the cylinder 32 and the blanket cylinder 31 by the fourth injection nozzle 54 to the contact portion of the plate cylinder 32 and the blanket cylinder 31, respectively.
  • the dehumidified air can be reused.
  • the blanket cylinder 31 is rotated, and the pattern of the ink transferred to the blanket cylinder 31 reaches the web W, a predetermined printing pressure is applied to the web W between the blanket cylinder 41 that performs back side printing.
  • the ink pattern on the blanket cylinder 31 is transferred to the surface of the web W.
  • the transfer property and image formability of the water-based ink are directly related to the print quality, and the operator can control the driving of the humidified air supply source 62 and the dehumidified air supply source 64 according to the atmospheric state of the printing unit 21 (ON). / OFF control or capability control) must be performed.
  • the printing unit 21 in the offset rotary printing press according to the present embodiment is a double-sided printing machine that simultaneously prints the front and back surfaces of the web W.
  • a blanket cylinder 41, a plate cylinder, an ink roller group, an ink supply device, a jet nozzle, and the like are arranged, and printing is performed while adjusting the water content of the ink.
  • the offset rotary printing press of the present embodiment has four printing units 21, 22, 23, and 24, and the other printing units 22, 23, and 24 perform the same work.
  • the ink fountain 35, the ink source roller 36, the delivery roller 37, the kneading roller 38, the reciprocating roller 39, the ink application roller 40, the plate cylinder 32, and the blanket cylinder 31 are connected in series.
  • a second injection nozzle 52 that supplies humidified air from the downstream side in the rotation direction is provided at the contact portion with the roller 40, and the humidified air injected from the first injection nozzle 51 is recovered as humidity-controlled air recovery means.
  • First suction nozzles 171a and 171b and second suction nozzles 172a and 172b for collecting the humidified air jetted from the second jet nozzle 52 are provided.
  • the first ejection nozzle 51 supplies humidified air to the contact portion between the kneading roller 38 and the reciprocating roller 39 from the downstream side in the rotational direction
  • the second spray nozzle 52 is provided at the contact portion between the reciprocating roller 39 and the ink application roller 40. Humidified air is supplied from the downstream side in the rotation direction.
  • the humidity-controlled air supplied to the contact portion of the roller is accompanied by the flow of the peripheral surface generated by the rotation of the roller, and flows along the peripheral surface of the pair of rollers, thereby adhering to the surface of the roller.
  • the amount of water in the ink is adjusted, so that good transferability of the ink can be secured, and good image forming properties can be secured, and as a result, the printing quality can be improved.
  • the first suction nozzles 171a and 171b are supplied by the first injection nozzle 51 to the contact portion between the kneading roller 38 and the reciprocating roller 39, and are humidified in the same manner as the rollers 38 and 39.
  • the second suction nozzles 172a and 172b suck the air and the second jet nozzles 52 supply the contact portion between the reciprocating roller 39 and the ink application roller 40 to suck the humid air that is associated with each of the rollers 39 and 40.
  • the third suction nozzles 173a and 173b are supplied by the third ejection nozzle 53 to the contact portion between the ink base roller 36 and the delivery roller 37, and suck the humid air that is associated with the rollers 36 and 37, respectively. It is returned to the supply source 62. Therefore, by collecting and circulating the humidified air, the humidified air supply source 62 can generate new humidified air using the collected humidified air, and the generated humidified air can be reused efficiently. Humidified air can be generated to reduce work costs.
  • the fourth injection nozzle 54 for supplying dehumidified air from the downstream side in the rotation direction is provided at the contact portion between the plate cylinder 32 and the blanket cylinder 31.
  • fourth suction nozzles 174a and 174b for collecting dehumidified air jetted from the fourth jet nozzle 54 are provided.
  • the fourth suction nozzles 174a and 174b supply the dehumidified air that is supplied to the cylinder 32 and the blanket cylinder 31 by the fourth injection nozzle 54 to the contact portion of the plate cylinder 32 and the blanket cylinder 31, respectively.
  • the supply source 64 is returned. Therefore, in the dehumidified air supply source 64, new dehumidified air is generated by the recovered dehumidified air, and the generated dehumidified air can be reused, and the operation cost can be suppressed.
  • the atmospheric humidity detector 70 for detecting the atmospheric humidity, and the humidity of the conditioned air supplied by each of the ejection nozzles 51 to 54 based on the atmospheric humidity detected by the atmospheric humidity detector 70 And a control device 69 for setting. Accordingly, each of the ejection nozzles 51 to 54 can supply humidity-controlled air having an appropriate humidity corresponding to the atmospheric humidity, and can appropriately adjust the amount of water in the ink adhering to the surface of the roller.
  • the humidified air collected by the supply humidity detector 191 that detects the humidity of the humidified air supplied to the roller contact portions by the ejection nozzles 51 to 53 and the suction nozzles 171a to 173b.
  • the control device 69 sets the humidity of the humidified air ejected by each of the ejection nozzles 51 to 53 based on the ambient humidity, the supply humidity, and the collected humidity. Therefore, humidity control air having an appropriate humidity is supplied based on the atmospheric humidity and the humidity of the collected humidity control air, and the driving cost is reduced by appropriately controlling the capability of the humidified air supply source 62. be able to.
  • FIG. 11 is a schematic configuration diagram showing the main part of a printing unit in a printing press according to Embodiment 6 of the present invention.
  • symbol is attached
  • the humidified air supply line (supply path) 60 is connected to the second ejection nozzle 52 from the humidified air supply source 62, while the second A humidified air recovery line (recovery path) 180 is connected from the suction nozzle 172a to the humidified air supply source 62.
  • the humidified air recovery line 180 serves as a bypass path for supplying the humidified air sucked and collected by the second suction nozzle 172a to the second injection nozzle 52 without returning to the humidified air supply source 62.
  • a bypass line 201 that bypasses the humidified air supply source 62 and is connected to the humidified air supply line 60 is provided.
  • the humidified air recovered by the second suction nozzle 172a is returned from the humidified air recovery line 180 to the humidified air supply source 62 at the connecting portion between the humidified air recovery line 180 and the bypass line 201, or via the bypass line 201.
  • a switching valve (switching means) 202 for switching whether to supply to the second injection nozzle 52 is provided.
  • an outside air intake line (outside air intake path) 203 for taking outside air (ambient atmosphere) is provided in the humidified air supply line 60, and a connection portion between the humidified air supply line 60 and the outside air intake line 203 is provided. Is provided with a flow rate adjusting valve 204 for adjusting the amount of outside air taken in from the outside air intake line 203.
  • the control device 69 controls the switching of the switching valve 202 based on the detection results of the atmospheric humidity detector 70 and the recovery humidity detector 192. Further, the control device 69 controls the flow rate adjustment valve 204 based on the detection results of the atmospheric humidity detector 70 and the recovery humidity detector 192 to adjust the outside air intake amount from the outside air intake line 203.
  • the control device 69 opens the humidified air recovery line 180 by the switching valve 202 and closes the bypass line 201.
  • the control device 69 closes the flow rate adjustment valve 204 to set the outside air intake amount from the outside air intake line 203 to 0%.
  • the second suction nozzle 172a sucks the air around the rollers 38 and 39, and supplies this air to the humidified air supply source 62 through the humidified air recovery line 180.
  • the humidified air supply source 62 adjusts the atmospheric humidity.
  • the corresponding humidified air is generated, and the second spray nozzle 52 supplies the humidified air to the contact portion between the reciprocating roller 39 and the ink applying roller 40 from the downstream side in the rotation direction.
  • the second suction nozzle 172a flows around the rollers 38 and 39. Then, the humidified air is sucked in, and the humidified air is returned to the humidified air supply source 62 through the humidified air recovery line 180.
  • the humidified air supply source 62 reuses the collected humidified air and recycles the humidified air according to the atmospheric humidity. Is generated.
  • the control device 69 closes the humidified air recovery line 180 by the switching valve 202 and communicates with the bypass line 201. Then, the second suction nozzle 172a sucks the humidified air flowing around the rollers 38 and 39, bypasses the humidified air to the humidified air supply line 60 through the bypass line 201, and the second injection nozzle 52
  • the humidified air is supplied to the contact portion between the reciprocating roller 39 and the ink applying roller 40 from the downstream side in the rotation direction.
  • the recovered humidity detector 192 constantly detects the humidity of the humidified air from the humidified air supply line 60 and outputs the humidity to the control device 69.
  • the control device 69 determines that the humidity of the collected humidified air includes the appropriate humidity.
  • the humidified air supply source 62 is bypassed by the bypass line 201.
  • the control device 69 closes the humidified air recovery line 180 by the switching valve 202 to communicate with the bypass line 201 and adjusts the opening of the flow rate adjustment valve 204 to remove the outside air.
  • the outside air intake amount from the inlet line 203 is adjusted. That is, the second suction nozzle 172 a sucks humidified air flowing around the rollers 38 and 39 and supplies the humidified air to the humidified air supply line 60 through the bypass line 201.
  • the outside air in the outside air intake line 203 is supplied to the humidified air supply line 60 through the flow rate adjustment valve 204.
  • the humidity of the collected humidified air is higher than the humidity of the outside air, the humidity is lowered by mixing the outside air with the humidified air, and the second injection nozzle 52 has a lower humidity than the collected humidified air.
  • the humidified air is supplied to the contact portion between the reciprocating roller 39 and the ink applying roller 40 from the downstream side in the rotation direction.
  • the control device 69 opens the humidified air recovery line 180 by the switching valve 202. Then, the area between the bypass line 201 is closed. Then, the humidified air collected by the second suction nozzle 172a is supplied to the humidified air supply line 60 through the humidified air supply source 62. On the other hand, the outside air in the outside air intake line 203 is supplied to the humidified air supply line 60 through the flow rate adjustment valve 204.
  • the outside air is mixed with the humidified air of the humidified air supply source 62 so that the humidity is adjusted appropriately, and the second jet nozzle 52 is placed at the contact portion between the reciprocating roller 39 and the ink deposition roller 40 in the rotational direction. Humidified air is supplied from the downstream side.
  • the humidified air supplied from the humidified air supply source 62 to the second injection nozzle 52 and the humidified air sucked by the second suction nozzle 172a are supplied.
  • a humidified air recovery line 180 that returns to the humidified air supply source 62 is provided, and a bypass line 201 that bypasses the humidified air recovery line 180 without returning to the humidified air supply source 62 is provided, and the humidified air recovery line 180 and the bypass line 201
  • a switching valve 202 is provided at the connecting portion.
  • the humidified air is not returned to the humidified air supply source 62 but supplied to the second injection nozzle 52 through the bypass line 201.
  • Driving cost can be reduced by temporarily stopping the humidified air supply source 62.
  • the outside air intake line 203 for taking outside air into the humidified air supply line 60 is provided, and the outside air intake is connected to the connecting portion between the humidified air supply line 60 and the outside air intake line 203.
  • a flow rate adjustment valve 204 that adjusts the intake amount of outside air from the line 203 is provided. Therefore, when the atmospheric humidity is reduced, the humidity of the humidified air injected by the second injection nozzle 52 can be reduced by taking in the outside air from the outside air intake line 203, and the capability of the humidified air supply source 62 is appropriately set. By controlling, driving cost can be reduced.
  • the case where the humidity of the outside air is low has been described.
  • the outside air may be used from the start of the printing press.
  • the intake amount may be adjusted to 100%, and humidified air may be supplied.
  • the driving cost of the humidified air supply source 62 and the dehumidified air supply source 64 can be reduced.
  • the second injection nozzle 52 and the second suction nozzle 172a have been described.
  • the other injection nozzles and suction nozzles described in the fifth embodiment have the same configuration.
  • FIG. 12 is a schematic configuration diagram showing the main part of the printing unit in the printing press according to the seventh embodiment of the present invention.
  • symbol is attached
  • the printing unit 21 has an air supply capable of supplying air of appropriate humidity from the downstream side in the rotation direction to the contact portion of the pair of rollers. Means are provided.
  • a blanket cylinder 31 is disposed above the conveyance path of the web W, and a plate cylinder 32 is disposed in contact with the blanket cylinder 31.
  • An ink roller group 33 and an ink supply device 34 are disposed above the plate cylinder 32.
  • the ink supply device 34 includes an ink fountain 35 and an ink base roller 36.
  • the ink roller group 33 includes a delivery roller 37, a kneading roller 38, a reciprocating roller 39, and an ink application roller 40.
  • the contact portion between the kneading roller 38 and the reciprocating roller 39 is provided with a first ejection nozzle 51 located downstream in the rotational direction, and the contact portion between the reciprocating roller 39 and the ink application roller 40.
  • a third jet nozzle 53 is provided at a contact portion between the ink base roller 36 and the delivery roller 37 at a downstream side in the rotation direction.
  • a fourth injection nozzle 54 is provided at the contact portion between the plate cylinder 32 and the blanket cylinder 31 at a downstream side in the rotational direction.
  • Fans 55 to 58 and flow rate adjusting valves 65 to 68 are connected to the injection nozzles 51 to 54, and the fans 55 to 57 and the flow rate adjusting valves 65 to 67 are connected to the humidified air supply lines 59 to 61. 58 and the flow rate adjustment valve 68 are connected to the dehumidified air supply line 63.
  • an external air intake unit 211 is provided together with the humidified air supply source 62, and an external air intake unit 212 is provided along with the dehumidified air supply source 64.
  • the humidified air supply lines 59 to 61 can be selectively switched to the humidified air supply source 62 or the external air intake section 211 via the switching valve 213, and the dehumidified air supply line 63 is switched via the switching valve 214.
  • the dehumidified air supply source 64 or the external air intake unit 212 can be selectively switched.
  • the external air intake unit 211 provided together with the humidified air supply source 62 is an area in which air having a humidity higher than the humidity of the air around the ink roller group 33 can be taken. For example, a room where a humidifier is operating.
  • the external air intake unit 212 provided together with the dehumidified air supply source 64 is an area in which air having a humidity lower than the humidity of the air around the ink roller group 33 can be taken. For example, a room where a dehumidifier is operating.
  • the fans 55 to 58, the flow rate adjusting valves 65 to 68, the humidified air supply source 62, the dehumidified air supply source 64, and the switching valves 213 and 214 can be controlled by the control device 69.
  • a humidity detector 70 for detecting the atmospheric humidity in the printing unit 21 is provided, and the control device 69 controls the humidity-controlled air supplied by the ejection nozzles 51 to 54 based on the atmospheric humidity detected by the humidity detector 70. The humidity is controlled to be optimum.
  • control device 69 switches the switching valves 213 and 214 based on the humidity of the external air intake units 211 and 212, and the humidified air supply lines 59 to 61 are connected from the humidified air supply source 62 to the external air intake unit 211.
  • the dehumidified air supply line 63 is switched from the dehumidified air supply source 64 to the external air intake unit 212. That is, according to the humidity of each external air intake part 211,212, the humidity of the air is not adjusted by the humidified air supply source 62 or the dehumidified air supply source 64, and the appropriateness in each external air intake part 211,212 is present. It can be used with air of high humidity.
  • humidified air is supplied from the downstream side in the rotation direction to the contact portion between the kneading roller 38 and the reciprocating roller 39 as air supply means for supplying air of appropriate humidity.
  • a first jet nozzle 51 for supplying, and a second jet nozzle 52 for supplying humidified air from the downstream side in the rotation direction are provided at a contact portion between the reciprocating roller 39 and the ink applying roller 40.
  • the first jet nozzle 51 supplies humid air from the downstream side in the rotational direction to the contact portion between the kneading roller 38 and the reciprocating roller 39
  • the second jet nozzle 52 is provided with the reciprocating roller 39 and the ink application roller 40.
  • Humidified air is supplied from the downstream side in the rotation direction to the contact portion.
  • air of appropriate humidity supplied to the contact portion of the roller accompanies the flow of the peripheral surface generated by the rotation of the roller and flows along the peripheral surface of the pair of rollers.
  • the amount of water in the attached ink will be adjusted, it will be possible to ensure good transferability of the ink, and it will be possible to ensure good image formability, and as a result, the print quality can be improved. .
  • the external air intake unit 211 is provided together with the humidified air supply source 62
  • the external air intake unit 212 is provided together with the dehumidified air supply source 64, so that the air in the external air intake units 211 and 212 corresponds to the humidity.
  • the printing press is configured by four printing units, but may be configured by one, two, or five or more.
  • the printing unit is composed of an ink supply device, a group of ink rollers, a plate cylinder, and a blanket cylinder.
  • the configuration and the number of the rollers and cylinders are not limited to those in the embodiment, and may be appropriately set to be optimal. That's fine.
  • the printing machine is a double-sided printing machine, it may be a single-sided printing machine, and can be applied not only to a rotary printing machine but also to a sheet-fed printing machine.
  • the printing press according to the present invention is intended to improve the printing quality by ensuring the good ink transferability and image forming property by adjusting the water content of the ink at each roller in the printing unit. It can also be applied to a printing press.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Abstract

Imprimante où un bac (35) à encre, un rouleau source (36) d’encre, un rouleau (37) d’amenée, un rouleau (38) de malaxage, un rouleau (39) d’inversion de sens, un rouleau (40) d’application d’encre, un cylindre maître (32) d’impression et un cylindre porte-blanchet (31) sont disposés en série de façon à se trouver en face et au contact les uns des autres, l’imprimante étant munie d’un moyen d’alimentation en air de régulation d’humidité. Le moyen d’alimentation en air de régulation d’humidité comporte : une première buse (51) d’éjection servant à fournir de l’air d’humidification, venant du côté aval dans le sens de rotation du rouleau (38) de malaxage et du rouleau (39) d’inversion de sens, à la partie où le rouleau (38) de malaxage et le rouleau (39) d’inversion de sens se trouvent en face et au contact l’un de l’autre ; une deuxième buse (52) d’éjection servant à fournir de l’air d’humidification, venant du côté aval dans le sens de rotation du rouleau (39) d’inversion de sens et du rouleau (40) d’application d’encre, à la partie où le rouleau (39) d’inversion de sens et le rouleau (40) d’application d’encre se trouvent en face et au contact l’un de l’autre ; et une troisième buse (53) d’éjection servant à fournir de l’air d’humidification, venant du côté aval dans le sens de rotation du rouleau source (36) d’encre et du rouleau (37) d’amenée, à la partie où le rouleau source (36) d’encre et le rouleau (37) d’amenée se trouvent en face et au contact l’un de l’autre.
PCT/JP2009/069712 2008-11-21 2009-11-20 Imprimante Ceased WO2010058842A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2008-298372 2008-11-21
JP2008298371A JP2012030364A (ja) 2008-11-21 2008-11-21 印刷機
JP2008-298371 2008-11-21
JP2008298372A JP2012030365A (ja) 2008-11-21 2008-11-21 印刷機

Publications (1)

Publication Number Publication Date
WO2010058842A1 true WO2010058842A1 (fr) 2010-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/069712 Ceased WO2010058842A1 (fr) 2008-11-21 2009-11-20 Imprimante

Country Status (1)

Country Link
WO (1) WO2010058842A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000506091A (ja) * 1996-03-13 2000-05-23 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 水性インキのための印刷ユニット
JP2007069361A (ja) * 2005-09-05 2007-03-22 Dainippon Printing Co Ltd インキローラ表面の湿し水調整装置
JP2007098616A (ja) * 2005-09-30 2007-04-19 Mitsubishi Heavy Ind Ltd 印刷機械
JP2008207485A (ja) * 2007-02-27 2008-09-11 Mitsubishi Heavy Ind Ltd 印刷機及び印刷方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000506091A (ja) * 1996-03-13 2000-05-23 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 水性インキのための印刷ユニット
JP2007069361A (ja) * 2005-09-05 2007-03-22 Dainippon Printing Co Ltd インキローラ表面の湿し水調整装置
JP2007098616A (ja) * 2005-09-30 2007-04-19 Mitsubishi Heavy Ind Ltd 印刷機械
JP2008207485A (ja) * 2007-02-27 2008-09-11 Mitsubishi Heavy Ind Ltd 印刷機及び印刷方法

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