Method for determining alignment accuracy of printed matter

Abstract

To provide a method for determining alignment accuracy of a printed matter capable of surely confirming print registration misalignment between a first printed pattern according to a first printing method and a second printed pattern according to a second printing method.SOLUTION: A printing alignment accuracy determining method for a printed product 1 of the present invention involves overlapping printing of a first printed pattern 10 obtained by a first printing method and a second printed pattern 20 obtained by a second printing method on at least a part of the surface of the base material. The first printed pattern 10 is formed by a first printed line 11, and the second printed pattern 20 is formed by a second printed line 21. The method is characterized by using a first printed line protruding shape part 11a or a first printed line end part 11b of the first printed line 11 as a verification point 12, and determining the deviation in registration at the position where the verification point 12 contacts the second printed line 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for determining registration accuracy of printed matter such as banknotes, stock certificates, securities, travel tickets, passports, and cards. [Background technology]

[0002] Measures to prevent counterfeiting and falsification are important for printed materials such as banknotes, stock certificates, securities, travel tickets, passports, and cards.

[0003] As a measure to prevent counterfeiting and tampering, the printed matter is printed using different printing methods, for example offset printing and intaglio printing, to improve resistance to counterfeiting and tampering.

[0004] Patent Documents 1 and 2 disclose printed matter printed using different printing methods such as offset printing and intaglio printing.

[0005] However, in order to print a printed matter using different printing methods, a plate suitable for each printing method is required, and the printing accuracy of each plate is required. In order to check the printing accuracy, it has been proposed to provide registration marks (also called register marks or register marks) in the margins of the printed matter (Patent Document 3).

[0006] For example, the registration marks are provided in the shape of a cross and are provided on each plate surface. When the printing accuracy is correct, all the registration marks are printed in the same position and are visually recognized as one registration mark. However, when the printing accuracy is off, the registration marks are printed in different positions and are visually recognized as being misaligned. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2010-167726 A [Patent Document 2] JP 2014-136326 A [Patent Document 3] Japanese Utility Model Application Publication No. 04-60432 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in general, when a printed matter is printed on multiple sheets, the sheets expand and contract due to the effects of printing during printing. Therefore, for example, even if the registration marks at the bottom of a printed matter are aligned, the registration marks at the top may not be aligned. Also, for printed matter in the center where there are no registration marks, it is not possible to check from the registration marks whether the registration is aligned.

[0009] Therefore, even if the registration marks proposed in Patent Document 3 are used, it is difficult to reliably confirm whether the printing is aligned correctly.

[0010] The present invention aims to provide a method for determining the registration accuracy of printed matter, which can reliably confirm the misregistration between a first printed pattern produced by a first printing method and a second printed pattern produced by a second printing method. [Means for solving the problem]

[0011] The method for determining the registration accuracy of a printed matter 1 of the present invention described in claim 1 is a method for determining the registration accuracy of a printed matter 1 in which a first printed pattern 10 by a first printing method and a second printed pattern 20 by a second printing method are printed adjacent to or overlapping on at least a part of the surface of a substrate, the first printed pattern 10 being formed by a first printed line 11, and the second printed pattern 20 being formed by a second printed line 21, characterized in that the first printed line convex portion 11a or the first printed line end portion 11b by the first printed line 11 is set as a confirmation point 12, and the misalignment of the print is judged at the position where the confirmation point 12 contacts the second printed line 21. Effect of the Invention

[0012] According to the method for determining the registration accuracy of a printed matter of the present invention, the convex portion or end portion of the first printed line made by the first printed line is used as a confirmation point, and the registration misalignment is judged at the position where it meets the second printed line, and since the registration misalignment can be judged from the printed matter itself, it is possible to reliably confirm whether the registration is correct. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a conceptual diagram showing a printed matter according to an embodiment of the present invention; [Diagram 2] FIG. 1 is a conceptual diagram showing a printed matter according to another embodiment of the present invention; [Diagram 3] FIG. 1 is a conceptual diagram showing yet another embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] A method for determining registration accuracy of a printed matter according to a first embodiment of the present invention uses a convex portion of the first printed line or an end portion of the first printed line as a check point, and judges misregistration at a position where the check point meets the second printed line. According to this embodiment, a convex portion of the first printed line or an end portion of the first printed line as a check point, and judges misregistration at a position where the check point meets the second printed line, and since the misregistration can be judged from the printed matter itself, it is possible to reliably check whether the registration is correct. EXAMPLES

[0015] A method for determining the registration accuracy of a printed matter according to the present invention will now be described.

[0016] Figure 1 is a conceptual diagram showing a printed matter according to one embodiment of the present invention, where Figure 1(a) is a conceptual diagram showing a printed matter printed on multiple sides of a sheet of paper, Figure 1(b) is a conceptual diagram showing a first printed pattern printed on one printed matter, Figure 1(c) is a conceptual diagram showing a second printed pattern printed on one printed matter, Figure 1(d) is a conceptual diagram showing a case where the first printed pattern and the second printed pattern are aligned, and Figure 1(e) is a conceptual diagram showing a case where the first printed pattern and the second printed pattern are misaligned.

[0017] The printed matter 1 of this embodiment is, for example, a printed matter such as a banknote, a passport, or an identification card, or a card such as a cash card, and the base material used is paper or plastic.

[0018] As shown in FIG. 1(a), a printed matter 1 in this embodiment is printed on a sheet 2 in multiple faces.

[0019] The printed matter 1 of this embodiment has a first printed pattern 10 printed by a first printing method and a second printed pattern 20 printed by a second printing method printed adjacent to each other on at least a portion of the surface of a substrate.

[0020] Here, the first printing method is offset printing and the second printing method is intaglio printing or screen printing.

[0021] As shown in Fig. 1(b), the first printed pattern 10 is formed by a first printed line 11. The first printed line 11 has a first printed line convex portion 11a and a first printed line end portion 11b, and the first printed line convex portion 11a or the first printed line end portion 11b is set as a confirmation point 12.

[0022] As shown in Fig. 1(c), the second printed pattern 20 is formed by a second printed line 21. The second printed line 21 has a second printed line end 21b.

[0023] As shown in FIG. 1(d) and FIG. 1(e), the misregistration is judged at the position where the confirmation point 12 contacts the second printing line 21.

[0024] When the confirmation point 12 is the first printed image convex portion 11a, the misregistration is judged based on whether the second printed image 21 touches the confirmation point 12. In this way, the misregistration is judged at the position where the second printed image 21 touches the first printed image convex portion 11a, so the confirmation work can be performed reliably.

[0025] Furthermore, when the check point 12 is the first printed image end 11b, the misregistration is judged based on whether the second printed image end 21b touches the check point 12. In this way, the misregistration is judged at the position where the first printed image end 11b touches the second printed image end 21b, so the check can be performed reliably.

[0026] In this embodiment, the term "contact" includes the case where the first printed object line 11 and the second printed object line 21 intersect at the confirmation point 12.

[0027] In this embodiment, there are four confirmation points 12. By providing at least two or more confirmation points 12 in this way, even if the printing is aligned correctly at one confirmation point, it can be confirmed that the printing is not aligned correctly at another confirmation point, so that the confirmation work can be performed reliably.

[0028] Fig. 2 is a conceptual diagram showing a printed matter according to another embodiment of the present invention, Fig. 2(a) is a conceptual diagram showing a first printed pattern printed on the printed matter, Fig. 2(b) is a conceptual diagram showing a second printed pattern printed on the printed matter, and Fig. 2(c) is a conceptual diagram showing a case where the first printed pattern and the second printed pattern are matched. Note that the printed matter 1 of this embodiment is also printed on multiple sides of a sheet of paper 2, and the printed matter 1 is printed with a first printed pattern 10 by a first printing method and a second printed pattern 20 by a second printing method, which are superimposed on at least a part of the surface of the base material, the first printing method being offset printing, and the second printing method being intaglio printing or screen printing.

[0029] As shown in Fig. 2(a), the first printed pattern 10 is formed by a first printed line 11. The first printed line 11 has a first printed line convex portion 11a, and the first printed line convex portion 11a is set as a confirmation point 12.

[0030] In this embodiment, eight confirmation points 12 are provided. Furthermore, the multiple confirmation points 12 are arranged in concentric circles equidistant from the center points of the first printed pattern 10 and the second printed pattern 20. By arranging the confirmation points 12 at equal distances from a specific position in this manner, it is easy to determine the positions of the remaining confirmation points 12 by determining the position of one confirmation point 12, so that the confirmation work can be performed reliably.

[0031] As shown in FIG. 2( b ), the second printed pattern 20 is formed by a second printed line 21 .

[0032] As shown in FIG. 1(c), the misregistration is judged at the position where the confirmation point 12 connects with the second printing line 21.

[0033] When the confirmation point 12 is the first printed image convex portion 11a, the misregistration is judged based on whether the second printed image 21 intersects with the confirmation point 12. In this way, the misregistration is judged based on the intersection position of the first printed image convex portion 11a with the second printed image 21, so that the confirmation work can be performed reliably.

[0034] Fig. 3 is a conceptual diagram showing yet another embodiment of the present invention, in which Fig. 3(a) is a conceptual diagram showing a part of a first printed line forming a first printed pattern printed on a printed matter and a part of a second printed line forming a second printed pattern, and Fig. 3(b) is a conceptual diagram showing a part of a first printed line and a part of a second printed line according to an embodiment different from Fig. 3(a). Note that the printed matter 1 of this embodiment is also printed on a sheet of paper 2 in a multi-sided manner, and the printed matter 1 has a first printed pattern 10 printed by a first printing method and a second printed pattern 20 printed by a second printing method printed adjacent to each other on at least a part of the surface of the base material, the first printing method being offset printing, and the second printing method being intaglio printing or screen printing. Also, the first printed pattern 10 is formed by a first printed line 11, and the second printed pattern 20 is formed by a second printed line 21.

[0035] 3(a), the first printed line 11 has a first printed line convex portion 11a, which serves as a confirmation point 12, and misregistration is judged based on whether the second printed line 21 comes into contact with the confirmation point 12. In this way, misregistration is judged at the position where the second printed line 21 comes into contact with the first printed line convex portion 11a, so that the confirmation work can be performed reliably.

[0036] 3(b), the first printed line 11 has a first printed line end 11b, which serves as a confirmation point 12, and the misregistration is judged based on whether the second printed line 21 contacts the confirmation point 12. In this way, the misregistration is judged at the position where the second printed line 21 contacts the first printed line end 11b, so that the confirmation work can be performed reliably.

[0037] In this embodiment, the term "contact" also includes the case where the first printed object line 11 and the second printed object line 21 intersect at the confirmation point 12.

[0038] As shown in each embodiment, the first printed line convex portion 11a or the first printed line end portion 11b of the first printed line 11 is used as the confirmation point 12, and the misalignment of the print is judged at the position where it connects to the second printed line 21.Since the misalignment of the print can be judged on the printed matter 1 itself, it is possible to reliably confirm whether the print alignment is correct. [Explanation of symbols]

[0039] 1 Printed matter 2 sheets of paper 10 First Printing Pattern 11 First printing line 11a 1st printing line convex shape part 11b 1st printing line end 12 Check points 20 Second Printing Pattern 21 Second printing line 21b 2nd printing line end

Claims

[Claim 1] A first printed pattern by a first printing method and a second printed pattern by a second printing method are printed adjacently or overlappingly on at least a part of a surface of the substrate; the first printing pattern is formed by a first printing line; The second printing pattern is formed by a second printing line. A method for determining registration accuracy of a printed matter, comprising the steps of: a first printed image convex portion or an end portion of the first printed image formed by the first printed image is set as a confirmation point; A misregistration is judged at a position where the confirmation point contacts the second print line. A method for determining registration accuracy of a printed matter, comprising:

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