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WO2008065420A1 - Cooling system for ink curing apparatus - Google Patents

Cooling system for ink curing apparatus Download PDF

Info

Publication number
WO2008065420A1
WO2008065420A1 PCT/GB2007/004603 GB2007004603W WO2008065420A1 WO 2008065420 A1 WO2008065420 A1 WO 2008065420A1 GB 2007004603 W GB2007004603 W GB 2007004603W WO 2008065420 A1 WO2008065420 A1 WO 2008065420A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
lamp
fan
cooling system
cooled
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/GB2007/004603
Other languages
French (fr)
Inventor
Malcolm Rae
James Hicks
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.)
Gew EC Ltd
Original Assignee
Gew EC 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
Application filed by Gew EC Ltd filed Critical Gew EC Ltd
Priority to DE602007009564T priority Critical patent/DE602007009564D1/en
Priority to AT07848421T priority patent/ATE482826T1/en
Priority to EP07848421A priority patent/EP2089228B1/en
Publication of WO2008065420A1 publication Critical patent/WO2008065420A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B41F23/0409—Ultraviolet dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0486—Particular types of dryers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00218—Constructional details of the irradiation means, e.g. radiation source attached to reciprocating print head assembly or shutter means provided on the radiation source
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun

Definitions

  • Ink curing apparatus comprising a housing containing a lamp partially surrounded by reflectors to direct UV light onto a substrate to cure ink are well known.
  • Such apparatus require highly efficient cooling systems due to the intense heat required to be emitted from the lamp.
  • the present invention seeks to provide an improved cooling system that is fully self-contained within a single housing and in which hot air is cooled as it flows over the apparatus components before being recycled through the system.
  • an ink curing apparatus having a fully self-contained cooling system, the apparatus comprising a single housing, in one end of which is provided a lamp and in the other end of which is provided a fan, the apparatus having defined therein a path to direct air emitted from the lamp, in use, over cooled surfaces within the housing towards the fan, and having further defined therein a further path to direct air over cooled surfaces within the housing from the fan towards the lamp.
  • the cooled surfaces within the housing are cooled by water channelled through at least one pipe within the housing.
  • the cooled surfaces include surfaces of at least one reflector which at least partially surrounds the lamp.
  • the or each pipe includes inner and outer discrete channels.
  • the apparatus comprises a single housing 10 a lower end 12 of which contains a lamp 14 partially surrounded by reflectors 16, 18.
  • a substrate 20 which carries ink for curing/drying is transported through the apparatus directly beneath the lamp 14.
  • UV light is directed on to the substrate for a period of time sufficient to dry/cure the ink on the substrate 20.
  • An upper end 22 of the housing 10 comprises a fan 24.
  • the ancillary parts of the apparatus within the housing 10, including the surfaces of each reflector 16, 18 are water-cooled using a "parallel system".
  • the water pipes 26 include inner and outer channels 26a, 26b. In use, cold water is directed into the apparatus through the inner channels 26a of the pipes 26 before being reversed such that the water, once hot, is directed out of the apparatus via the outer channels 26b of the pipes 26.
  • Using such a parallel system allows a back plate of the apparatus to require only one inlet and one outlet for coolant.
  • the inlet and outlet are attached to a baffle plate (not shown) within the apparatus, whereupon the inlet and outlet are divided into a plurality of pipes 26 which extend throughout the apparatus to cool all the ancillary parts.
  • the apparatus is designed in such a way as to direct the hot air from the lamp 14 over as many cooled surfaces of the ancillary components as possible. Tests have shown that, by the time air emitted from the lamp 14, and travelling over the cooled surfaces as shown, reaches the fan 24 it has reduced in temperature to around 7O 0 C. The air is now drawn over cooled surfaces 32 of the upper end 22 of the housing 10 before being directed over cooled surfaces of the sides of the housing 10 back into the lower end 12. As the air travels down the sides of the housing 10, the temperature decreases progressively. Finally, the air, now at around 32°C, is fed back towards the lamp 14.
  • the fan 24 only requirement of the fan 14 is to provide cooling for the lamp 14.
  • the fan 14 does not need to provide cooling to the other ancillary components of the apparatus as they are cooled separately by the water pipes 26. Consequently, the size of the fan can be greatly reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

Ink curing apparatus having a fully self-contained cooling system. The apparatus comprises a single housing (10) with a lamp (14) and fan (24) and means to direct heat from the fan (24) over cooled surfaces of the housing (10).

Description

COOLING SYSTEM FOR INK CURING APPARATUS
This invention relates to a cooling system for ink curing apparatus.
Ink curing apparatus comprising a housing containing a lamp partially surrounded by reflectors to direct UV light onto a substrate to cure ink are well known.
Such apparatus require highly efficient cooling systems due to the intense heat required to be emitted from the lamp.
Commonly, such apparatus utilise complicated water cooling systems that require a network of pipes, the apparatus requiring many inlets and outlets to provide flow of water across the apparatus components.
Other known cooling methods include passing the redundant hot air from the lamp through a heat exchanger built within a separate large cooling unit.
The present invention seeks to provide an improved cooling system that is fully self-contained within a single housing and in which hot air is cooled as it flows over the apparatus components before being recycled through the system.
Accordingly, in one aspect there is provided an ink curing apparatus having a fully self-contained cooling system, the apparatus comprising a single housing, in one end of which is provided a lamp and in the other end of which is provided a fan, the apparatus having defined therein a path to direct air emitted from the lamp, in use, over cooled surfaces within the housing towards the fan, and having further defined therein a further path to direct air over cooled surfaces within the housing from the fan towards the lamp.
Preferably the cooled surfaces within the housing are cooled by water channelled through at least one pipe within the housing.
Preferably still, the cooled surfaces include surfaces of at least one reflector which at least partially surrounds the lamp.
Preferably the or each pipe includes inner and outer discrete channels.
One embodiment of the present invention will now be described by way of example with reference to the accompanying drawing which is a schematic cross-sectional view of an ink curing apparatus incorporating a cooling system constructed in accordance with the present invention.
The majority of the curing apparatus shown in the figure is conventional with standard components. For simplicity, only the components relevant to the present invention will be described in detail.
The apparatus comprises a single housing 10 a lower end 12 of which contains a lamp 14 partially surrounded by reflectors 16, 18. In use, a substrate 20 which carries ink for curing/drying is transported through the apparatus directly beneath the lamp 14. When the reflectors 16, 18 are in an open position, UV light is directed on to the substrate for a period of time sufficient to dry/cure the ink on the substrate 20.
An upper end 22 of the housing 10 comprises a fan 24.
The ancillary parts of the apparatus within the housing 10, including the surfaces of each reflector 16, 18 are water-cooled using a "parallel system". In such a system the water pipes 26 include inner and outer channels 26a, 26b. In use, cold water is directed into the apparatus through the inner channels 26a of the pipes 26 before being reversed such that the water, once hot, is directed out of the apparatus via the outer channels 26b of the pipes 26.
Using such a parallel system allows a back plate of the apparatus to require only one inlet and one outlet for coolant. The inlet and outlet are attached to a baffle plate (not shown) within the apparatus, whereupon the inlet and outlet are divided into a plurality of pipes 26 which extend throughout the apparatus to cool all the ancillary parts.
During use, the lamp 14 emits heat at around 7500C. The UV heat is directed onto the substrate 20. A portion of the IR heat is absorbed into the surfaces of the reflectors 16, 18. The remaining IR is drawn upwardly through the housing via the fan 24. The path of the IR is shown by arrows in the Figure. On its way to the fan 24 the air is drawn over top surfaces 28, 30 of the reflectors 16, 18 which are kept cool via the water pipes 26.
The apparatus is designed in such a way as to direct the hot air from the lamp 14 over as many cooled surfaces of the ancillary components as possible. Tests have shown that, by the time air emitted from the lamp 14, and travelling over the cooled surfaces as shown, reaches the fan 24 it has reduced in temperature to around 7O0C. The air is now drawn over cooled surfaces 32 of the upper end 22 of the housing 10 before being directed over cooled surfaces of the sides of the housing 10 back into the lower end 12. As the air travels down the sides of the housing 10, the temperature decreases progressively. Finally, the air, now at around 32°C, is fed back towards the lamp 14.
In the present cooling system the fan 24 only requirement of the fan 14 is to provide cooling for the lamp 14. The fan 14 does not need to provide cooling to the other ancillary components of the apparatus as they are cooled separately by the water pipes 26. Consequently, the size of the fan can be greatly reduced.
It will be appreciated that the foregoing is merely exemplary of one embodiment of the cooling system according to the present invention and of just one form of ink curing apparatus with which it may be used. The skilled reader will understand that modifications can readily be made thereto without departing from the true scope of the invention.

Claims

1. An ink curing apparatus having a fully self-contained cooling system, the apparatus comprising a single housing, in one end of which is provided a lamp and in the other end of which is provided a fan, the apparatus having defined therein a path to direct air emitted from the lamp, in use, over cooled surfaces within the housing towards the fan, and having further defined therein a further path to direct air over cooled surfaces within the housing from the fan towards the lamp.
2. Apparatus according to claim 1, wherein the cooled surfaces within the housing are cooled by water channelled through at least one pipe within the housing.
3. Apparatus according to claim 1 or claim 2, wherein the cooled surfaces include surfaces of at least one reflector which at least partially surrounds the lamp.
4. Apparatus according to claim 2 or claim 3, wherein the or each pipe includes inner and outer discrete channels.
5. Apparatus according to claim 4, wherein cold water is directed into the apparatus through the inner chamber of the or each pipe and hot water is directed out of the apparatus through the outer channels of the or each pipe.
6. Apparatus substantially as hereinafter described or referred to in the figures.
PCT/GB2007/004603 2006-12-01 2007-11-30 Cooling system for ink curing apparatus Ceased WO2008065420A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE602007009564T DE602007009564D1 (en) 2006-12-01 2007-11-30 COOLING SYSTEM FOR PRINTING COLOR HARDENING DEVICE
AT07848421T ATE482826T1 (en) 2006-12-01 2007-11-30 COOLING SYSTEM FOR INK CURING DEVICE
EP07848421A EP2089228B1 (en) 2006-12-01 2007-11-30 Cooling system for ink curing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0624086A GB2444328B (en) 2006-12-01 2006-12-01 Cooling system for ink curing apparatus
GB0624086.5 2006-12-01

Publications (1)

Publication Number Publication Date
WO2008065420A1 true WO2008065420A1 (en) 2008-06-05

Family

ID=37671736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/004603 Ceased WO2008065420A1 (en) 2006-12-01 2007-11-30 Cooling system for ink curing apparatus

Country Status (5)

Country Link
EP (1) EP2089228B1 (en)
AT (1) ATE482826T1 (en)
DE (1) DE602007009564D1 (en)
GB (1) GB2444328B (en)
WO (1) WO2008065420A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700039A1 (en) * 2008-12-01 2010-06-15 Uviterno Ag Device for irradiating a substrate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2468703A (en) * 2009-03-19 2010-09-22 Gew Ink curing apparatus with water cooled heat exchanging means
GB2495901B (en) * 2011-08-08 2014-03-12 Gew Ec Ltd Improved housing for ink curing apparatus
GB2495161B (en) * 2012-02-28 2013-08-07 Gew Ec Ltd Ink curing apparatus
CN109774303A (en) * 2019-01-23 2019-05-21 陕西北人印刷机械有限责任公司 A kind of mixed bellows and its control method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146998A1 (en) * 1983-06-24 1985-07-03 Screen Printing Supplies Pty Limited Curing apparatus
WO1996034700A1 (en) * 1995-05-04 1996-11-07 Nölle Gmbh Method and device for hardening a layer on a substrate
DE10109061A1 (en) * 2000-03-08 2001-10-04 Nordson Corp Monitoring method for lamp unit used in printing or surface coating industry uses measurement of reflected radiation when emitted radiation is blocked from reaching substrate to be dried

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3522333B2 (en) * 1993-06-29 2004-04-26 岩崎電気株式会社 UV irradiation device
WO2004040191A1 (en) * 2002-10-29 2004-05-13 Knud Andreasen Cooling of devices for uv hardening
JP2006350237A (en) * 2005-06-20 2006-12-28 Sharp Corp Light source device, lamp housing, lamp unit, and projection-type image display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146998A1 (en) * 1983-06-24 1985-07-03 Screen Printing Supplies Pty Limited Curing apparatus
WO1996034700A1 (en) * 1995-05-04 1996-11-07 Nölle Gmbh Method and device for hardening a layer on a substrate
DE10109061A1 (en) * 2000-03-08 2001-10-04 Nordson Corp Monitoring method for lamp unit used in printing or surface coating industry uses measurement of reflected radiation when emitted radiation is blocked from reaching substrate to be dried

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700039A1 (en) * 2008-12-01 2010-06-15 Uviterno Ag Device for irradiating a substrate

Also Published As

Publication number Publication date
EP2089228A1 (en) 2009-08-19
GB2444328A (en) 2008-06-04
ATE482826T1 (en) 2010-10-15
GB0624086D0 (en) 2007-01-10
GB2444328B (en) 2010-06-09
DE602007009564D1 (en) 2010-11-11
EP2089228B1 (en) 2010-09-29

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