JP2012071560A - Printing method of printing machine, and printing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing method of printing machine which does not cause a variable information printing part to be separated even if a usual pressure-bonded postcard is used, and a printing machine employing the printing method.SOLUTION: As for the paper printed by the common information printing part B, variable information is printed in the variable information printing part C, and after the printed paper is dried in a drying part D, a repellent layer is formed in a repellent layer forming part E and a false adhesive layer is formed in a false adhesive layer forming part F. In the position of variable information P1 of printed matter P, some pressure bonding varnishes as a false adhesive are repelled with a repellent varnish when the pressure bonding varnish is applied after the repellent varnish is applied, and then the bonding area of the part is decreased, resulting in adhesion deterioration.

Description

  The present invention relates to a printing method for a printing press and a printing press, and more particularly, to a printing method for a printing press and a printing press for producing a crimped postcard including variable information such as confidential information and personal information.

  In the recent printing market, the printing surface on which various information is printed is folded inside, the overlapping surface is pseudo-bonded to conceal the information and mail it, and the recipient peels off the adhesive part and reads the concealing information There is not much demand for crimped postcards. For such postcards, it is possible to print both common information printing common to all postcards, such as frames and patterns, and variable information printing that differs for each postcard, such as confidential information and personal information. Many. Common information printing is performed by offset printing using a plate, and variable information printing is often performed by an inkjet printer, a laser printer, or the like.

  Conventionally, there has been a possibility that the variable information printing part may be peeled off when the pressure-sensitive postcard is peeled off.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses a technique for preventing troubles in a variable information printing portion by applying a concavo-convex process to a base paper of a pressure-bonded postcard.

Japanese Patent No. 3732495

  However, there has been room for improvement, as the base paper of the crimped postcard has to be used with a special unevenness treatment.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a printing method and a printing machine for a printing press in which a variable information printing portion is not peeled off even when a normal pressure-sensitive postcard paper is used. Is to provide.

  In order to achieve the above object, the present invention provides a common information printing unit that prints common information common to all of the papers that are conveyed and printed, and variable information that prints variable information that is different for each paper to be printed. In the printing method of a printing press having a printing unit, after the variable information is printed, a repellant layer having a property of repelling the pseudo-adhesive layer is formed at least on the portion where the variable information is printed, and after the repellant layer is formed, at least the The pseudo adhesive layer is formed in a portion where variable information is printed.

  In addition, the present invention includes a common information printing unit that prints common information common to all the conveyed and printed sheets in an offset manner, and a variable information printing unit that prints variable information that differs for each printed sheet. A repellent layer forming unit that is provided downstream of the variable information printing unit in the transport direction and applies a repellent having a property of repelling pseudo-adhesive to at least a portion on which the variable information is printed; and A pseudo-adhesive layer forming unit that is provided on the downstream side in the transport direction of the layer forming unit and that applies the pseudo-adhesive to at least a portion on which the variable information is printed.

  According to the printing method and the printing machine of the printer according to the present invention, after the variable information is printed, a repellant layer having a property of repelling the pseudo-adhesive layer is formed at least on the portion where the variable information is printed, and after the repellant layer is formed, Since the pseudo-adhesion layer is formed at least on the portion where the variable information is printed, the adhesive strength of the necessary portion is weakened without using special paper, and the variable information printed portion is peeled off when the postcard is peeled off. In addition, it is possible to obtain a printing method for a printing press and a printing press that can maintain the adhesive strength of the pressure-bonded postcard. In addition, since the paper having no irregularities can be used, the print quality is good.

It is a schematic side view which shows an example of the printing machine of this invention. It is a top view which shows an example of the printed matter P printed.

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

  FIG. 1 is a schematic side view showing an example of a printing machine according to the present invention. FIG. 2 is a plan view showing an example of the printed matter P that has been printed. As shown in the schematic side view of FIG. 1, the printing press according to this embodiment is a sheet-fed offset printing press. This printing machine includes a paper feeding unit A, a common information printing unit B for printing on paper from the paper feeding unit A, a variable information printing unit C, a drying unit D, and a repelling layer forming unit E. , A pseudo adhesive forming part F and a paper discharge part G are provided. The specific configuration of each part constituting the printing press is not limited to that shown in the figure.

  A sheet for crimping postcard (not shown) fed from the sheet feeding unit A is conveyed from the feeder board 1 by the swing 3 and the sheet feeding cylinder 5, and common information printing unit B prints common information. The common information printing unit B includes four printing units, and includes an ink roller group 7, a plate cylinder 9, a rubber cylinder 11, an impression cylinder 13, and a transfer cylinder 15. Although not shown, each of the impression cylinder 13 and the transfer cylinder 15 has two grippers (one or three or more) in the circumferential direction for gripping the fed paper with a nail base and a nail. Good).

  The paper printed by the common information printing unit is printed with variable information by the inkjet device 19 on the jetting cylinder 17 of the variable information printing unit C. An air guard 21 is disposed below the transfer cylinder 15 on the downstream side of the jetting cylinder 17. The air guard 21 is provided with a plurality of openings (not shown), and the sheet is attracted to the air guard 21 and conveyed by suction (or ejection in some cases) of the air guard 21. Therefore, the sheet does not adhere to the transfer cylinder 15 and the variable information printed by the inkjet device 19 does not transfer to the transfer cylinder surface.

  The paper printed by the variable information printing unit C is dried by the inkjet drying device 25 on the drying drum 23 of the drying unit D. In this embodiment, the portion where the variable information printing is performed on the paper is dried, but the entire surface of the paper may be dried. An air cooling nozzle 27 is disposed below the drying drum 23 so as to reduce the temperature rise of the apparatus due to the drying action.

  Thereafter, the sheet is conveyed to the repellency layer forming unit E. The repellent layer forming portion E is composed of a printing unit similar to the common information printing portion B, and includes an ink roller group 7, a plate cylinder 9, a rubber cylinder 11, and an impression cylinder 13. The plate (not shown) wound around the plate cylinder 9 of the repellent layer forming unit E is a PS plate similar to the plate used in the common information printing unit B. Based on the prepress data for plate creation, the printed matter in FIG. A repelling varnish, which will be described later, can be applied to a position corresponding to P variable information P1 (ABC characters). Therefore, it is more advantageous in terms of process and cost than separately producing a dedicated resin plate (coater resin plate). In addition, the printed matter P is obtained by attaching six crimped postcards that are folded in three.

  Unlike the ink roller group 7 of the common information printing unit B, the repelling varnish is supplied to the ink roller group 7 of the repellant layer forming unit E. This repellency varnish is a repellency agent in the present invention, and cellulose, polyamide, vinyl chloride, modified polyolefin, rubber acrylic, urethane and other resin components added with wax or silicon can be used, Preferably, an ultraviolet curable liquid varnish is used. In the case of an ultraviolet curable liquid varnish, an acrylic or unsaturated polyester prepolymer, a monomer component such as acrylic or styrene, And what added wax and silicon to the mixture of a photoinitiator is used.

  Thereafter, the sheet is conveyed to the pseudo adhesive layer forming unit F. The pseudo adhesive layer forming portion F is configured such that the pressure-bonding varnish from the varnish supply roller 29 is supplied to a coater resin plate (not shown) wound around the varnish plate cylinder 31 and applied to the entire surface of the paper on the varnish cylinder 33. ing. This pressure bonding varnish is a pseudo-adhesive in the present invention, and acrylic, styrene monomer component, photopolymerization initiator and other additives are added to acrylic, unsaturated polyester, natural rubber and synthetic rubber prepolymers And varnish having pressure-sensitive adhesiveness.

  The paper to which the pseudo adhesive is applied is conveyed to the paper output unit G and is discharged. The paper discharge unit is provided with a gripper (not shown) provided on a chain 39 suspended between the first sprocket 35 and the second sprocket 37, and is configured to transport the paper sandwiched between the grippers. . A UV drying device 41 is provided in the middle of the section in which the paper is conveyed by the gripper, and the whole surface of the paper is dried here.

  A postcard is produced by cutting and folding the paper discharged in this way. Specifically, the printed material P shown in FIG. 2 is cut into six equal parts, and then Z-folded (one of the two dotted line portions of the printed material P in FIG. 2 is folded in a valley and the other is folded in a mountain). By pressing the pressure postcard, a pressure-bonded postcard is produced.

  As described above, a portion of the pressure-varying varnish as the pseudo-adhesive is repelled by the repellent varnish by applying the pressure-varnish after the repellent varnish is applied to the variable information P1 portion of the printed matter P. Adhesive area is reduced and adhesive strength is reduced. Therefore, there is no possibility that the variable information printing part is peeled off when the pressure-bonded postcard is peeled off.

  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 repelling varnish is applied only to the portion where the variable information is printed. However, the repelling varnish may be applied to other portions to adjust the adhesion strength of the pressure-bonded postcard. . In the above-described embodiment, the ink jet device is used. However, a toner transfer device or the like may be used. In the above-described embodiment, the sheet offset printing machine is used. However, the present invention is not limited to this, and a rotary paper printing machine may be used.

  The printing press printing method and the printing press according to the present invention are extremely useful in a printing press that prints variable information.

DESCRIPTION OF SYMBOLS 1 ... Feeder board, 3 ... Swing, 5 ... Feed cylinder, 7 ... Ink roller group, 9 ... Plate cylinder, 11 ... Rubber cylinder, 13 ... Impression cylinder, 15 ... Transfer cylinder, 17 ... Jetting cylinder, 19 ... Inkjet Device: 21 ... Air guard, 23 ... Dry cylinder, 25 ... Inkjet drying device, 27 ... Air-cooling nozzle, 29 ... Virgin supply roller, 31 ... Vnish plate cylinder, 33 ... Vnish cylinder, 35 ... First sprocket, 37 ... Second sprocket , 39 ... chain, 41 ... UV drying device.

Claims (2)

Printing method for a printing press having a common information printing unit that prints common information common to all of the conveyed and printed sheets in an offset manner, and a variable information printing unit that prints variable information that differs for each printed sheet In
After the variable information is printed, a pseudo-adhesive layer having a property of repelling the pseudo-adhesive layer is formed at least on the portion where the variable information is printed, and after the flip-layer is formed, the pseudo-adhesive layer is formed on at least the portion where the variable information is printed A printing method for a printing press, characterized in that In a printing machine having a common information printing unit that prints common information common to all sheets to be conveyed and printed in an offset manner, and a variable information printing unit that prints variable information that differs for each printed sheet.
A repellent layer forming portion that is provided on the downstream side of the variable information printing unit in the conveyance direction and applies a repellent agent that repels pseudo-adhesive to at least a portion on which the variable information is printed, and conveyance of the repellent layer formation unit A printing machine comprising: a pseudo adhesive layer forming unit which is provided on the downstream side in the direction and applies the pseudo adhesive to at least a portion where the variable information is printed.

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