TWI769964B - Roller printing device with ultrasonic module - Google Patents

Abstract

A roller printing device with ultrasonic module having an embossing roller, one or more nozzle groups and one or more ultrasonic modules is provided. The embossing roller defines an axis line and could rotate around the axis line. A plurality of holes are arranged on an outer surface of the embossing roller. The nozzle group is arranged on the embossing roller and includes a plurality of inkjet heads arranged along the axis line. The ultrasonic module is arranged inside the embossing roller and includes a plurality of ultrasonic emitter arranged up and down oppositely with the inkjet heads. The roller printing device is thereby capable of increasing printing quality through different intensities of ultrasonic waves emitted by the ultrasonic emitters to control a drop point of ink.

Description

Roller Printing Device with Ultrasonic Module

The present invention relates to a printing device, and more particularly, to a roller printing device having an ultrasonic module.

The traditional roller printing device uses a roller at the printing end. The roller can roll relative to the medium to be printed, and then the ink on the roller is pressed onto the medium to be printed, so as to achieve a pattern printed on the medium to be printed. Function.

However, due to the ejection distance or the surface tension of the ink droplets, the process of applying ink to the roller may cause the ink droplets to not be accurately attached to the surface of the roller or drop in the predetermined position, which will lead to the pattern imprinted by the roller with unclear image or uneven color. question.

In view of this, the inventor of the present invention has devoted himself to the research and application of the theory in view of the above-mentioned prior art, and tried his best to solve the above-mentioned problems, which has become the goal of the present inventor's development.

The present invention provides a roller printing device with an ultrasonic module, which utilizes each ultrasonic transmitter to emit ultrasonic waves toward each inkjet head, and controls the landing point of ink droplets through the intensity of the ultrasonic waves, thereby improving the number of roller printing devices. print quality.

In an embodiment of the present invention, the present invention provides a roller printing device with an ultrasonic module, comprising: an embossing roller defining an axis line and capable of rotating around the axis line, The outer surface of the imprinting roller is provided with a plurality of holes; at least one nozzle group is arranged above the imprinting roller, the at least one nozzle group includes a plurality of inkjet heads arranged along the axis line; and at least one ultrasonic mold A group is arranged inside the imprinting roller, and the at least one ultrasonic module includes a plurality of ultrasonic transmitters arranged opposite to the plurality of inkjet heads up and down.

Based on the above, when the plurality of inkjet heads eject ink droplets to the platen roller, each ultrasonic transmitter will emit ultrasonic waves towards each inkjet head, and control the landing point of the ink droplets through the intensity of the ultrasonic waves. The trajectory falls, and the enhanced ultrasonic wave can make the ink droplets fall in a left or right parabolic trajectory, so that the ink droplets can accurately fall on the predetermined hole position, and the slight vibration generated by the ultrasonic wave can also promote the ink droplets to penetrate and fill the holes. After that, the imprinting roller rotates relative to the nozzle group and the ultrasonic module and squeezes the medium to be printed, so that the ink in the hole can be accurately transferred to the medium to be printed, so that the pattern printed by the roller printing device has an image. The advantages of detailed, full color, etc., and then improve the printing quality of the roller printing device.

10: Roller printing device

1: Embossing roller

11: Holes

12: Photosensitive roller

2: Nozzle group

21: Inkjet head

3: Ultrasonic module

31: Ultrasonic transmitter

4: Body

41: Positioning seat

42: Fixed rod

43: piercing rod

44: circuit board

6: Send to media agencies

d: axis line

100: Media to be printed

200: ink drop

FIG. 1 is a three-dimensional schematic diagram of the roller printing device of the present invention.

FIG. 2 is a partial enlarged perspective view of the roller printing device of the present invention.

FIG. 3 is a schematic cross-sectional view of the roller printing device of the present invention.

FIG. 4 is a partial enlarged cross-sectional view of the roller printing device of the present invention.

FIG. 5 is another schematic cross-sectional view of the roller printing apparatus of the present invention.

FIG. 6 is another partial enlarged cross-sectional view of the roller printing device of the present invention.

FIG. 7 is a schematic diagram of the ultrasonic transmitter of the present invention emitting ultrasonic waves toward the inkjet head.

FIG. 8 is a three-dimensional schematic diagram of another embodiment of the roller printing apparatus of the present invention.

FIG. 9 is a partial enlarged perspective view of another embodiment of the roller printing apparatus of the present invention.

FIG. 10 is a schematic cross-sectional view of another embodiment of the roller printing apparatus of the present invention.

11 is a partial enlarged cross-sectional view of another embodiment of the roller printing apparatus of the present invention.

The detailed description and technical content of the present invention will be described below with the accompanying drawings, but the accompanying drawings are only used for illustration purposes and are not intended to limit the present invention.

Referring to FIGS. 1 to 7 , the present invention provides a roller printing device with an ultrasonic module. The roller printing device 10 mainly includes an imprinting roller 1 , a nozzle group 2 and an ultrasonic module 3 .

As shown in FIG. 1 to FIG. 7 , the imprinting roller 1 defines an axis d and can rotate around the axis d. The outer surface of the imprinting roller 1 is provided with a plurality of holes 11 , and the diameter of each hole 11 is less than 400 micrometers (mm).

The detailed description is as follows. The imprinting roller 1 of this embodiment is a photosensitive roller 12. The photosensitive roller 12 utilizes the photosensitive properties of the photosensitive material to instantly emit strong light radiation through special equipment, so that the surface of the photosensitive material is photo-oxidized and thermally cross-linked. Thereby, but not limited thereto, the embossing roller 1 can also be made of foam such as sponge or rubber.

As shown in FIG. 1 to FIG. 7 , the nozzle group 2 is arranged above the imprinting roller 1 , and the nozzle group 2 includes a plurality of inkjet heads 21 arranged along the axis line d, and the plurality of inkjet heads 21 are parallel to the axis line d. Ways juxtaposed equidistant from each other.

As shown in FIG. 1 to FIG. 7 , the ultrasonic module 3 is arranged inside the imprinting roller 1 , and the ultrasonic module 3 includes a plurality of ultrasonic transmitters that are arranged opposite to the plurality of inkjet heads 21 up and down, the number is equal, and the positions are in one-to-one correspondence. 31. Each ultrasonic transmitter 31 is used to emit ultrasonic waves toward each inkjet head 21.

As shown in FIG. 1 to FIG. 6 , the roller printing device 10 of the present invention further includes a body 4 , the imprinting roller 1 is pivotally connected to the body 4 , and the body 4 has a positioning seat 41 arranged above the imprinting roller 1 . Two fixing rods 42 on the left and right sides of the imprinting roller 1 and a strip plate 43 which are penetrated through the imprinting roller 1 and are fixed to the two fixing bars 42 at both ends, the nozzle group 2 is fixed on the positioning seat 41, and the ultrasonic module 3 is fixed on the The strip plate 43 enables the imprinting roller 1 to rotate relative to the nozzle group 2 and the ultrasonic module 3 .

In addition, the strip plate 43 of this embodiment is a circuit board 44, and the ultrasonic module 3 is electrically connected to the circuit board 44, but this is not a limitation; furthermore, the body 4 of this embodiment can be a floor-standing type printer machine, desktop printer, or hand-held printer body.

As shown in FIG. 1 , FIG. 3 , and FIG. 5 , the roller printing device 10 of the present invention further includes a media feeding mechanism 6 , which is fixed to the body 4 and is arranged below the embossing roller 1 . The media feeding mechanism 6 is used for A to-be-printed medium 100 is conveyed to provide imprinting by the imprinting roller 1 . Wherein, the medium feeding mechanism 6 includes a plurality of conveying rollers for clamping and conveying the medium 100 to be printed, but it is not limited thereto.

As shown in FIG. 1 to FIG. 7 , the roller printing device 10 of the present invention is used in a state where a plurality of inkjet heads 21 are arranged above the imprinting roller 1 , and a plurality of ultrasonic transmitters 31 are arranged inside the impressing roller 1 . , when the plurality of inkjet heads 21 eject ink droplets 200 to the platen roller 1, each ultrasonic transmitter 31 will emit ultrasonic waves towards each inkjet head 21, and control the landing point of the ink droplets 200 through the intensity of the ultrasonic waves, and then make the ink droplets 200. 200 accurately falls on the predetermined hole 11 position, and the slight vibration generated by the ultrasonic wave can also promote the ink droplet 200 to penetrate and fill the hole 11, and then the imprinting roller 1 rotates relative to the nozzle group 2 and the ultrasonic module 3 and is connected with the medium to be printed. 100 are pressed against each other, and the ink in the holes 11 can be accurately transferred to the medium 100 to be printed, so that the pattern printed by the roller printing device 10 has the advantages of fine imaging and full color, thereby improving the roller printing device. 10 print quality.

Further description is as follows. As shown in FIG. 7 , it is a schematic diagram of the ultrasonic transmitter 31 emitting ultrasonic waves toward the inkjet head 21. Normal ultrasonic waves or weakened ultrasonic waves will cause the ink droplets 200 ejected by the inkjet head 21 to fall into the holes 11 in a straight line. , but enhancing the ultrasonic wave will cause the ink droplets 200 ejected by the inkjet head 21 to be offset In particular, when one side of the enhanced ultrasonic wave is configured with normal ultrasonic waves and the other is configured with weakened ultrasonic waves, the ink droplets 200 ejected by the inkjet head 21 will be directed towards the weakened ultrasonic waves (the weaker ultrasonic waves in the ultrasonic waves on both sides). The offset method falls into the hole 11 , so as to achieve the purpose of precisely controlling the falling position of the ink droplet 200 .

Please refer to FIGS. 8 to 11 , which are another embodiment of the roller printing apparatus 10 of the present invention. The embodiments of FIGS. 8 to 11 are substantially the same as the embodiments of FIGS. 1 to 7 . The difference between the embodiment and the embodiment shown in FIG. 1 to FIG. 7 is that the numbers of the nozzle groups 2 and the ultrasonic modules 3 are plural respectively.

The details are as follows. The ink colors in each print head group 2 are different, that is, the ink of different colors is installed in different print head groups 2, so the number of print head groups 2 is the same as the number of ink colors required for printing.

In addition, the plurality of nozzle groups 2 are equidistantly juxtaposed with each other in the form of the vertical axis d. The number of the plurality of nozzle groups 2 and the plurality of ultrasonic modules 3 are equal in number and the positions are in one-to-one correspondence. A plurality of ultrasonic transmitters 31 of an ultrasonic module 3 are arranged along the axis d in an up and down opposite arrangement, with equal numbers and one-to-one correspondence, so that each ultrasonic transmitter 31 can emit ultrasonic waves toward each inkjet head 21 . In this way, the same functions and effects as those of the embodiments in FIG. 1 to FIG. 7 can be achieved.

To sum up, the roller printing device with ultrasonic module of the present invention has never been seen in similar products or used publicly, and has industrial applicability, novelty and progress, and fully meets the requirements for patent application. It is proposed in accordance with the Patent Law Application, please check carefully and grant the patent in this case to protect the rights of the inventor.

10: Roller printing device

1: Embossing roller

12: Photosensitive roller

2: Nozzle group

21: Inkjet head

3: Ultrasonic module

31: Ultrasonic transmitter

4: Body

41: Positioning seat

42: Fixed rod

43: piercing rod

44: circuit board

6: Send to media agencies

100: Media to be printed

Claims (10)

A roller printing device with an ultrasonic module, comprising: an imprinting roller, which defines an axis line and can rotate around the axis line, the outer surface of the imprinting roller is provided with a plurality of holes; at least one nozzle A group is arranged above the imprinting roller, the at least one nozzle group includes a plurality of inkjet heads arranged along the axis line; and at least one ultrasonic module is arranged inside the imprinting roller, the at least one ultrasonic wave The module includes a plurality of ultrasonic transmitters arranged up and down opposite to the plurality of inkjet heads. The roller printing device with an ultrasonic module as claimed in claim 1, wherein the diameter of each of the holes is less than 400 microns. The roller printing device with an ultrasonic module according to claim 1, wherein the imprinting roller is a photosensitive roller. The roller printing device with an ultrasonic module as claimed in claim 1, wherein each of the ultrasonic transmitters is used to emit ultrasonic waves toward each of the inkjet heads. The roller printing device with an ultrasonic module as claimed in claim 1, wherein the plurality of inkjet heads are juxtaposed at equal distances from each other in a manner parallel to the axis. The roller printing device with an ultrasonic module as claimed in claim 1, wherein the number of the nozzle groups and the ultrasonic modules are respectively plural, the plural nozzle groups are juxtaposed with each other at an equal distance perpendicular to the axis line, and the plural nozzle groups are equal to each other. The number of the plurality of ultrasonic modules is equal and the positions are in one-to-one correspondence. The roller printing device with an ultrasonic module as claimed in claim 6, wherein the inkjet heads of each nozzle group and the ultrasonic transmitters of each ultrasonic module are equal in number and in one-to-one correspondence. The roller printing device with an ultrasonic module as claimed in claim 1, further comprising a body, the imprinting roller is pivotally connected to the body, and the body has a positioning seat disposed above the imprinting roller, and disposed on the Two fixing rods on the left and right sides of the imprinting roller and a strip plate passing through the imprinting roller and fixed to the two fixing rods at both ends, the at least one nozzle group is fixed on the positioning seat, the at least one ultrasonic module fixed to the strip. The roller printing device with an ultrasonic module as claimed in claim 8, wherein the strip board is a circuit board, and the at least one ultrasonic module is electrically connected to the circuit board. The roller printing device with an ultrasonic module as claimed in claim 8, further comprising a media feeding mechanism, the media feeding mechanism is fixed on the body and arranged below the imprinting roller, and the media feeding mechanism is used for transmitting A to-be-printed medium to provide the impression roller impression.

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