CN1292509A

CN1292509A - Anti-false method for making plate of net-point printing and printed matter made up by using said method

Info

Publication number: CN1292509A
Application number: CN 99116906
Authority: CN
Inventors: 沈南平; 任兆强; 任兆雄
Original assignee: SHANGHAI RENSHI COMPUTER PLATE-MAKING Co Ltd
Current assignee: SHANGHAI RENSHI COMPUTER PLATE-MAKING Co Ltd
Priority date: 1999-09-23
Filing date: 1999-09-23
Publication date: 2001-04-25

Abstract

The present invention discloses a lattice point printing plate-making anti-false method and the printed matter made up by using said method. It is characterized by that on a piece of film or a set of films made up by using said invented method or on printing plate the lattice point with two kinds or two groups of mesh angles can be simultaneously produced, then the printed matter made up by using said invented method and flat screen film which is identical to mass tone color matching plate in angle and number of lines are combined to display implicit graph so as to attain anti-false goal. The invented advantages lies in that it has no pollution and does not increase consumption of raw material.

Description

The method for anti-counterfeit of net-point printing plate-making and the printing made from this method

The present invention relates to method for anti-counterfeit of a kind of net-point printing plate-making and products thereof

As everyone knows, printing is to use various formes or other method that the literal on original copy or the carrier, graphical information are transformed into paper or other stock surface in bulk by means of printing ink or colorant, makes a kind of technology of its reproduction.At present, the pressure printing mainly contains lithography (wherein most widely used with hectographic printing), letterpress (comprising flexographic printing), intaglio printing and porous printing (comprising serigraphy).Except minority with the printing of color line image performance, with on the spot specially printing, collotype printing and the wood-block printing printing of the existing color lump pattern of color table, the printing that the overwhelming majority comprises the colored text figure all is made of " site ".Concrete condition according to printing makes lattice point structure have corresponding dot shape, screen ruling and screen angle.In order to make the forme that printing comprises colored text, figure, need print pre-treatment (plate-making) to original copy with lattice point structure.General Huang, pinkish red, blue or green, the black four look versions of adopting.In polychrome printing, influence the attractive in appearance of patterned surface for fear of the appearance of moire (claiming Moire fringe again), for four look lattice point structures, version screen angle of all kinds is generally desirable: yellow (Y) 0 °, black (BK) 15 °, pinkish red (M) 45 °, blue or green (C) 75 °.Because the Y version is weak look version, its density value is much lower than other look version, and each differs from 15 ° so allow it and BK version and C version, and like this, the moire on printing is still difficult to be distinguished by naked eyes.

Conventional seal pre-treatment process introduced in top summary.We find out, " moire " on the printing is because the screen angle of version of all kinds mismatches causes, and is that people try hard to avoid.Yet the present inventor has exactly utilized in press known " moire " phenomenon, make the screen angle of subregion (be called " latent graph region ") of the film or forme different consciously, and the figure of stealth is shown with tangible moire form at the screen ruling that obtains a routine of covering on the printing thus and the identical film of screen angle with the screen angle of other parts (being called " showing graph region ").Thereby develop a kind of novel unique plate-making method for anti-counterfeit.This method can be used for the printed anti-counterfeiting product packing.

The objective of the invention is to propose a kind of anti-forge method that is applicable to net-point printing plate-making at the demand of the product on the present market to new method for anti-counterfeit.

According to an aspect of the present invention, provide a kind of anti-forge method of net-point printing plate-making, described method comprises following steps:

(1) colored original and stealthy literal or the input after color separation scanning of figure original text of need can be overlapped the film at one or one; Or be manufactured with the computer work of two kinds or two networking order angles on the forme simultaneously;

(2) described computer work changes into line frame graph to hidden pattern and literal and makes it to fall within the mode that differs a screen angle difference with apparent figure and shows among the figure, uses a kind of DTP (the Desk Top Publishing desktop system) forme that can simultaneously export the phototypesetting output machine output of all kinds version film of two kind angle sites supporting with described computer work again.Or CTP (Computer to Plate computer is directly made a plate) forme.

(3) on printing, cover and the same angle of look version of dominant hue, the plain net film of collinear number, promptly show latent figure.

According to a further aspect in the invention, provide a kind of printing of being made by said method, pattern in this product and word segment are divided into apparent figure and latent figure or are to conceal to scheme entirely, and this latent figure is by having the networking point of certain angle difference to combine with apparent figure.

Fig. 1 is the make a plate process flow diagram of step of the present invention;

Fig. 2 is the synoptic diagram of explanation printing structural principle of the present invention.

Describe concrete steps of the present invention in detail below in conjunction with accompanying drawing 1, in step 1, the Logo or the manuscript of colored original and steady shape are sent into electric separation machine or scanning machine.Then repair figure or typewriting with Apple Computers in step 2.Utilize computer work that the hidden pattern literal is changed into line frame graph and make its screen angle and apparent figure screen angle has a site differential seat angle and falls within and shows among the figure in step 3 then.In step 4, use a kind of DTP forme that can simultaneously export the phototypesetting output machine output of all kinds version film of two kind angle sites supporting with described computer work.Or directly make the CTP forme, so far finish the seal pre-treatment.In step 5, carry out printing down, work out a draft, draw printing.Last in step 6 same angle, collinear several plain net films of compound and mass-tone toning version, thereby demonstrate invisible graph in (or directly printing) picture and text.

Fig. 2 schematically represents the structure of printing.Because latent figure differs certain angle with the mesh of apparent figure, when compound one with this mass-tone toning version (referring to latent figure) with the line-transect number and the plain net film of angle equally, just can show with moire immediately.

The present invention has the following advantages: it pollutes without any " three wastes ".Because the present invention just falls among the apparent figure to differ a differential seat angle with former figure in the part that will need to imply (latent figure) with the existing difference of making a plate, therefore do not increase plate-making Central Plains material consumption, more do not increase any fee of material and operational specific (special) requirements in the printing process, just can obtain the special-effect of " latent figure among the figure ".If this technology is applied in the external packing of name brands, just can strengthen false proof dynamics of cracking down on counterfeit goods and speed; The social reputation of the famous-brand and high-quality goods of protection production firm and the economic interests of enterprise.

When this stealth technique is applied in the copying and printing of the artwork and collectibles, just can draws artist or collector's thick lines and resemble or outline and content such as autograph, be hidden in the color printing product, it is shown once again.Thereby make this printing increase the content of art appreciation and the value of collection.And so on.

Claims

1. the method for anti-counterfeit of a net-point printing plate-making is characterized in that comprising following steps:

(1) with colored original and need stealthy literal or the figure original text can be manufactured with the computer work of two kinds or two networking order angles simultaneously through input after the color separation on one or a cover film or forme;

(2) described computer work changes into line frame graph to the hidden pattern literal and makes it to fall within the mode that differs a screen angle with apparent figure and shows among the figure

(3) use a kind of DTP forme that can simultaneously export the phototypesetting output machine output of all kinds version film of two kind angle sites supporting with described computer work.Or directly make the CTP forme;

(4) the DTP forme made from the version film of all kinds; Or directly make the CTP forme and print printing;

(5), demonstrate latent figure with printing and compound with the plain net film of the same angle of main tone look version, collinear number.

2. a printing of utilizing the described method generation of claim 1 is characterized in that, figure wherein and word segment are divided into apparent figure and latent figure or are to conceal to scheme entirely, and the screen angle of the screen angle of this latent figure site and apparent figure site has certain degree poor.