JP2016117264A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple printer that can be downsized and includes a surface treating unit that can reduce the consumption of transfer films.SOLUTION: A printer includes: a printing unit B that performs printing on a print sheet; and a surface treating unit C that performs surface treatment onto the print sheet on a drum 3, the print sheet being subject to the printing by the printing unit B and being conveyed by the drum 3. The surface treating unit C includes a transferring drum 50. The transferring drum 50 is provided with a supplying roller 51 capable of supplying a transfer film F and a collecting roller 52 capable of collecting the transfer film F, inside the transferring drum 50.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a printing machine, and in particular, includes a surface treatment unit for increasing an added value of a printing surface by transferring an embossed pattern, a hologram pattern, or the like by pressing a transfer film against printed printing paper. It relates to a printing machine.

  As a printer capable of pressing a transfer film onto a printed printing paper surface, attaching a metal layer, or transferring a hologram pattern or the like, for example, there is a printing machine having a surface treatment unit as shown in Patent Document 1 It is disclosed.

JP 2012-76460 A

  However, in the configuration of Patent Document 1, a stock roll and a collection roll are installed on the upper part of the printing unit, and between these two rolls, a large number of guide rollers are provided inside and outside the printing unit. There is a problem that the apparatus becomes large and the structure becomes complicated. In addition, during operation (during transfer), since the transfer film is continuously supplied almost constantly, the consumption of the transfer film increases and there is room for improvement.

  The present invention has been made to solve such a problem, and provides a printing machine having a surface treatment unit that can reduce the amount of transfer film used in a configuration that can be reduced in size with a simple configuration. Objective.

  In order to achieve the above-described object, the present invention achieves the above-described object by a printing unit B that prints printing paper, and a surface processing unit C that performs surface treatment on the printing paper printed by the printing unit B and conveyed by the printing drum 3 on the printing drum 3. The surface treatment unit C includes a transfer cylinder 50, a supply roll 51 that can supply the transfer film F in the transfer cylinder 50, and a collection roll 52 that can collect the transfer film F. And is provided.

  In the printing machine of the present invention, the surface treatment unit of the printing machine can be downsized with a simple configuration, and the amount of transfer film used can be reduced.

It is a schematic sectional side view of a printing machine provided with the surface treatment part concerning the present invention. It is a simple enlarged view of a surface treatment part. It is a simple enlarged view which shows the other Example of a surface treatment part.

  Next, modes for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is an example of a printing machine provided with a surface treatment unit according to the present invention. As shown in FIG. 1, the printing press according to the present embodiment is a sheet-fed offset printing press. This printing machine has a paper feeding unit A for feeding out sheets as printing paper one by one from a paper stack by a feeder device or a paper separating device, and printing on the sheets from the paper feeding unit A. A printing unit B for performing the processing, a surface processing unit C for performing a surface treatment on the sheet printed by the printing unit B, and a paper discharge unit D for discharging the sheet are provided. Here, the printing unit B is a printing unit B including four printing units 5 so that four colors can be printed. However, the printing unit can print colors other than four colors, that is, one color or two or more colors. It may be. The specific configuration of each part constituting the printing press is not limited to that shown in the figure.

  The printing unit 5 includes a plate cylinder 1, a rubber cylinder 2, an ink roller group 4, an impression cylinder 3, and a transfer cylinder 6. Although not shown, each of the impression cylinders 3 has grippers for gripping the fed sheet with the nail base and the nail at two locations in the circumferential direction (one or three or more locations may be used). I have. Reference numeral 7 denotes a paper feed cylinder which plays a role of receiving a sheet transported on the feeder board 8 and the mouth plate 9 from the swing arm 10 and transferring it to the impression cylinder 3. The feeding cylinder 7 and the swing arm 10 are also provided with the claw base and the claw.

  The paper discharge unit D is composed of a chain transport device including two paper discharge cylinders and a gripper. That is, a first paper discharge cylinder 11 adjacent to the impression cylinder 3 of the surface treatment section C and a second paper discharge cylinder 12 adjacent to the first discharge cylinder 11 are provided, and provided on the front side (upstream side) in the sheet transport direction. An endless chain 15 is wound around a sprocket 14 provided on the rear side (downstream side) of the sprocket 13 and the sheet in the conveyance direction, and is regulated by a chain guide (not shown) by the rotation of the sprockets 13 and 14. In this state, the chain 15 goes around.

  As shown in FIGS. 1 and 2, the surface treatment section C is provided with a transfer cylinder 50 that faces and contacts the impression cylinder 3. Reference numeral 60 denotes a drying device, which is configured to be able to dry and cure ink on printing paper by irradiating ultraviolet rays. The drying device 60 is constituted by a mercury lamp, but can also be constituted by a light emitting diode (LED-UV) capable of irradiating ultraviolet rays.

  A transfer film F is wound around the transfer cylinder 50. More specifically, a supply roll 51 and a recovery roll 52 are provided in the gap G that is a cutout portion of the transfer cylinder 50. A transfer film F is wound around the supply roll 51, and the transfer film F is wound around the surface of the transfer cylinder 50 and wound around the collection roll 52. The new transfer film F is positioned on the surface of the transfer cylinder 50 by rotating the supply roll 51 and the recovery roll 52 by a predetermined amount.

  The operation of the surface treatment unit in the printer configured as described above will be described. The sheet fed from the sheet feeding unit A is printed by the printing unit B, and the surface processing unit C performs surface processing. Printing in which a hologram pattern or the like formed on the transfer film F is printed on the sheet by pressing the transfer film F onto the sheet conveyed on the impression cylinder 3 of the surface treatment unit C. It is transferred to the surface (ink surface) (fine irregularities of the transfer film F are formed on the ink surface). The impression cylinder 3 and the transfer cylinder 50 rotate in the direction of the arrow in FIG. At substantially the same time as the transfer, the drying device 60 irradiates ultraviolet rays in the direction of arrow E, and the ink surface is dried and cured. Therefore, ink does not adhere to the transfer film F released from contact with the sheet. The sheet subjected to the surface treatment is discharged to the paper discharge unit D.

  When a surface treatment is performed on a predetermined amount of sheets, the hologram pattern or the like of the transfer film F is consumed (disappeared). Therefore, the operator stops the printing press and rotates the supply roll 51 and the collection roll 52 of the transfer cylinder 50 by the same amount in order to expose a new transfer film. The amount of exposure of the new transfer film F is the portion of the transfer film F that has been consumed, and is the portion indicated by the range R in FIG. In this embodiment, after surface treatment is performed on about 5000 sheets of paper, a new transfer film F is exposed. The impression cylinder 3 has a diameter twice that of the transfer cylinder 50 (double cylinder), and the above-mentioned grippers (not shown) are provided in two places in the circumferential direction on the impression cylinder 3, so that the impression cylinder 3 rotates 2500 times. Surface treatment is performed on 5000 sheets of paper.

  By configuring in this way, unlike the conventional technique, it is possible to obtain a surface treatment unit that is reduced in size with a simple configuration. Moreover, the consumption of the transfer film can be reduced by using the same transfer film F for a predetermined number of sheets without constantly feeding the transfer film F and consuming a large amount of the transfer film F. .

  FIG. 3 shows another embodiment of the present invention. The difference from the above-described embodiment is that the drying device 60 is disposed inside the transfer cylinder 50. The drying device 60 is configured to be fixed to a fixed shaft inside the rotating transfer cylinder 50. The transfer cylinder 50 is formed in a hollow shape, and the cylinder surface is made of a transparent material such as hard plastic or glass. Further, since the transfer film F is also a transparent film, the printing surface (ink surface) formed on the sheet by irradiating ultraviolet rays in the direction of arrow E from the inside of the transfer cylinder 50 can be dried and cured. Yes. With this configuration, the apparatus can be further reduced in size. The supply roll 51 and the recovery roll 52 are the same as those in the above-described embodiment. After the surface treatment of a predetermined amount of sheets, the transfer film F in the same range (R) as shown in FIG. A new transfer film F is exposed.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. For example, in the above-described embodiment, the transfer film F of the transfer cylinder 50 is pressed and transferred to the ink surface printed by the printing unit B. However, the present invention is not limited to this. For example, a varnish coater is provided downstream in the transport direction of the printing unit B. The transfer film F may be pressed and transferred to a varnish surface provided on the printing paper by a varnish coater. By doing in this way, it becomes possible to use inks other than an ultraviolet curing type as the ink used in the printing part B. However, another drying device such as an infrared drying device is required separately.

  In the above-described embodiments, the sheet-fed offset printing machine is used. However, the present invention is not limited thereto, and a printing machine including a surface treatment device such as a rotary paper printing machine, a gravure printing machine, or a flexographic printing machine. It may be a thing.

  The printer according to the present invention is extremely useful in a printer having a surface treatment apparatus.

1: Plate cylinder 2: Rubber cylinder 3: Pressure cylinder 3: Cylinder 4: Ink roller group 5: Printing unit 6: Transfer cylinder 7: Feed cylinder 8: Feeder board 9: Mouth plate 10: Swing arm 11: First discharge Paper cylinder 12: Second paper discharge cylinder 13: Sprocket 14: Sprocket 15: Chain 50: Transfer cylinder 50: Supply roll 51: Supply roll 52: Collection roll 60: Drying device A: Paper feed section B: Printing section C: Surface Processing section D: Paper discharge section E: Arrow F: Transfer film G: Gap R: Range

Claims (1)

In a printing machine comprising: a printing unit that prints printing paper; and a surface treatment unit that performs surface treatment on the printing paper that is printed by the printing unit and conveyed by the cylinder.
The surface treatment unit includes a transfer cylinder, and a printing roll provided with a supply roll capable of supplying a transfer film and a recovery roll capable of collecting the transfer film are provided in the transfer cylinder.

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