CN103204009A

CN103204009A - Method of using offset print process to make latent pattens

Info

Publication number: CN103204009A
Application number: CN2013100793723A
Authority: CN
Inventors: 花颖; 郭界; 吴旺宝; 周敏; 金劼; 沈志云; 陆泰伟; 吴亚复
Original assignee: Shanghai Banknote Printing Co Ltd; China Banknote Printing and Minting Corp
Current assignee: SHANGHAI BANKNOTE PRINTING CO Ltd; China Banknote Printing and Minting Group Co Ltd
Priority date: 2013-03-13
Filing date: 2013-03-13
Publication date: 2013-07-17
Anticipated expiration: 2033-03-13
Also published as: CN103204009B

Abstract

The invention discloses a method of using offset print process to make laten pattens. The method uses offset print four color printing, the four color is a first color printed in full board network mode, a second color with a patten A in the blank portion printed in parallel line mode, a third color of patten B printed in network mode and a fourth color with a patten B in the blank portion printed in parallel line. The method can only use the traditional offset print process to make laten pattens through the cooperation of printing oil and patten design, the cost is low and cheap, the popularization of the method in low amount pars, common securities and certificates is convenient.

Description

A kind of with offset printing process making latent image method of patterning

Technical field:

The present invention relates to anti-counterfeiting technology, particularly a kind of method that adopts offset printing technology to make latent image pattern or hidden pattern.

Background technology:

Latent image is widely used in all kinds of moneys and the marketable securities as an anti-counterfeiting technology.Latent image need not by particular instrument, is easy to popular identification, has desirable antifalse effect.At present, the preparation method of latent image mainly contain following several in:

1, adopts carved gravure technology.Form raised line clearly on the printed article surface, concave-convex sense is strong, in the gravure figure of complexity line, also is concealed with hidden pattern or literal, utilizes the high low-resistance photosensitiveness of raised line, and frontlighting can be seen hidden pattern clearly.Because carved gravure is the distinctive technology of seal paper money industry, plate cost height, the China ink consumption is big, produces large amount of sewage, needs to drop into the expensive environmental protection treatment expense.

2, adopt special plate-making.With latent image pattern and non-latent image pattern with identical density, equidirectional but different overlapping scannings the in lines design back of angle, with the plate-making after image is modified the software processing of electronic technology synthetic method, strengthen the site, produce sharp keenization effect, this edition suggestion is made as first look yellow version.Its excess-three look is respectively by identical density, equidirectional but the different lines design of angle.Under the different light rays angle, observe, can see the latent image pattern.These class methods mainly rely on the plate-making design technology, its plate-making process complexity, and global design has certain requirement to non-latent image pattern.

Summary of the invention

Carved gravure technology at present main flow realizes the latent image pattern, its cost height, be unfavorable for applying and the special mask-making technology realization of need latent image pattern, the shortcoming of its plate-making process complexity the object of the present invention is to provide a kind of easy, general offset printing process to make the latent image method of patterning.

Goal of the invention of the present invention is achieved through the following technical solutions:

A kind of with offset printing process making latent image method of patterning, employing offset printing four-color process, first look is with the form printing of full version site; Second look is with the printing of average line strips, and blank parts forms pattern A; The 3rd look prints with the site form; The 4th look is with the printing of average line strips, and blank parts forms pattern B.

Described first look and the 4th look adopt the printing of metal-to-metal adhesive printing ink, and described second look and the 3rd look adopt common offset ink printing.

Described offset ink and the metal ink colour-difference on printing apart from be DL≤30 and-12≤DC≤13 and DH≤7, color data adopts DATACOLOUR SF600 to test, software is Color QCv1.3.Test condition is the D65 light source, comprises bright luster, comprises UV, and 6.6mm tests the aperture.This data area can be variant with the difference of tester or test condition.

The dot density of described first look 〉=50%; The 3rd look dot density is in 10%-50% scope.

Described second look with width, the interval of the lines of the 4th look consistent.Line thickness and interval width ratio are in 1/2-3 scopes.

Described second look and the 3rd look be on same version simultaneously the printing, merge into of the same colour, the version line overlapping.

By latent image pattern or the product that the inventive method makes, change the visual angle and can observe different patterns, reach false proof purpose with this.

This invention adopts seal paper money tradition offset plate making technology can realize the latent image pattern by printing ink and cooperating that the figure line designs.With low cost, be convenient to apply at low denomination nominal value and common security, certificate.

Description of drawings

Fig. 1 is that the embodiment of the invention 1 is at 90 ° of observed design sketch of direction;

Fig. 2 is that the embodiment of the invention 1 is at 45 ° of observed design sketch of direction;

Fig. 3 is that the embodiment of the invention 2 is at 90 ° of observed design sketch of direction;

Fig. 4 is that the embodiment of the invention 2 is at 45 ° of observed design sketch of direction.

The specific embodiment

Embodiment 1

Golden metal-to-metal adhesive printing ink:

First look: adopt golden metal-to-metal adhesive printing ink, with the full version printing of 75% dot density.

Second look: straight average lines printing, blank parts forms flying bird pattern A.Adopt common offset ink printing, with the color distortion of golden metal-to-metal adhesive printing ink on printing of first look be DL=23.27, DC=-6.24, DH=4.28.

The 3rd look: 20% dot density printed patterns B, printing ink is with second look.

The 4th look: straight average lines printing, blank parts form i.e. " seal " word mark of pattern B.Printing ink is with first look.

Change the visual angle and can observe different patterns to reach false proof purpose.Observe in the vertical direction, can see the bird that circles in the air, observe in 45 ° of directions, can see " seal " word mark.Effect such as Fig. 1,2.

Embodiment 2

Red metal-to-metal adhesive printing ink:

First look: adopt red metal-to-metal adhesive printing ink, with the full version printing of 70% dot density.

Second look: straight average lines printing, blank parts forms bouquet pattern C.Common offset ink printing, with the color distortion of red metal-to-metal adhesive printing ink on printing of first look be DL=8.23, DC=4.84, DH=2.03.

The 3rd look: 15% dot density printing Sunny D, printing ink is with second look.

The 4th look: straight average lines printing, blank parts forms Sunny pattern D.Printing ink is with first look.

Change the visual angle and can observe different patterns to reach false proof purpose.Observe in the vertical direction, can see the bouquet pattern, observe in 45 ° of directions, can see the Sunny pattern.Effect such as Fig. 3,4.

Claims

1. make the latent image method of patterning with offset printing process for one kind, its spy is: adopt offset printing: first look is with the form printing of full version site, second look prints with the average line strips, blank parts forms pattern A, the 3rd look is with site form printed patterns B, the 4th look is with the printing of average line strips, and blank parts forms pattern B;

Described first look and the 4th look adopt the printing of metal-to-metal adhesive printing ink, described second look and the 3rd look adopt common offset ink printing, offset ink and metal ink on printing colour-difference apart from be DL≤30 and-12≤DC≤13 and DH≤7, colour-difference adopts DATACOLOUR SF600 test apart from numerical value, software is Color QCv1.3, and test condition is the D65 light source, comprises bright luster, comprise UV, 6.6mm tests the aperture.

2. described a kind of with offset printing process making latent image method of patterning according to claim 1, it is characterized in that: described second look and the 3rd look can print on a version simultaneously, and the version line is overlapping.

3. according to claim 1 a kind of with offset printing process making latent image method of patterning, it is characterized in that the dot density of described first look 〉=50%; The 3rd look dot density is 10%-50%.

4. according to claim 1ly a kind ofly make the latent image method of patterning with offset printing process, it is characterized in that described second look with width, the interval of the straight average lines of the 4th look consistent.

5. according to claim 4ly a kind ofly make the latent image method of patterning with offset printing process, it is characterized in that the average line thickness of described second look and the 4th look is 1/2-3 with interval ratio.

6. latent image pattern or the product that is made by the described method of claim 1.