Gravure printing method and gravure printing article

A technology of gravure printing and printing roller, which is applied in the field of gravure printing method and gravure printing, which can solve the problems of FM net without density fluctuation, increase of process, and use restrictions, and achieve the effect of high-precision gravure printing and avoid ripples

Inactive Publication Date: 2005-08-03
THINK LABORATORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (3) The FM network has no significant density fluctuations
[0019] However, if the engraving plate and screen gravure are not carefully combined, there will be a moiré image, which limits its use
In addition, when two plate-making methods are used for one printing cylinder, for example, it is also possible to use electronic engraving for the photo part and screen gravure for the text / thin line part. However, since the plate-making machine involves many aspects It will increase the process and increase the cost in practical application

Method used

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  • Gravure printing method and gravure printing article
  • Gravure printing method and gravure printing article
  • Gravure printing method and gravure printing article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] As shown in Figure 1, with respect to one roller R, for the corresponding meshes that need to form characters 1 and reproduced images 2 with a thick ink concentration, image 3 The AM mesh formation shown; for the mesh of the photographic image 3 and the thin line 4 expressed in shades, the Figure 4 The FM network formation shown in C1.

Embodiment 2

[0044] Such as figure 2 As shown, for example, in the gravure printing method when 5 printing rollers are used to overprint black, blue, red, yellow and white 5 colors of gravure printing, the gravure printing roller R1 is installed in the first printing section to print black, and in the second printing section The gravure printing roll R2 is installed in the printing section to print blue, the gravure printing roll R3 is installed in the third printing section to print red, the gravure printing roll R4 is installed in the fourth printing section to print yellow, and the gravure printing roll is installed in the fifth printing section R5 is printed in white.

[0045] In black and white printing, the mesh structure of the plate image 5 or 9 that forms the gravure printing roll for this printing is due to the image 3 The AM network shown is formed so that thick ink concentrations can be obtained.

[0046] Blue, red and yellow printing, forming the mesh structure of the plate...

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PUM

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Abstract

The photogravure printing is completed with photogravure comprising AM screen and FM screen. The text and reproduced image needing dense ink are formed with the meshes of corresponding AM screen, while the picture and fine lines with dark and light ink for representing are formed with the meshes of corresponding FM screen.

Description

technical field [0001] The present invention relates to a gravure printing method and a gravure printed matter which have been improved by using an AM (amplitude modulation) screen and the gravure printing method used in gravure printing in a multi-color overprinting method using a plurality of printing rollers. FM (Frequency Modulation) screen is suitable for printing with printing parts that require thicker oil density and printing parts that require high-definition shading. Background technique [0002] image 3 A typical gravure AM mesh is shown. In the photogravure, the shade is represented by the dot size. Since it is necessary to use a scraper to scrape off the excess ink when the ink enters the mesh, the area of ​​the screen line in the darkest shadow part reaches 20-30%. That is to say, the photogravure The intaglio plate is a plate in which the gradation of the plate is expressed at about 0 to 75% with respect to the gradation of 0 to 100% of the printed matter. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F9/02G03F5/20
Inventor 重田核
Owner THINK LABORATORY CO LTD
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