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Method for making precoating sensitization etching printing plate

A technology of pre-coating photosensitive and production methods, which is applied in printing, printing plates, printing processes, etc., to achieve the effects of improving production automation and production efficiency, improving development quality and efficiency, and improving consistency and stability

Active Publication Date: 2011-08-31
石家庄印钞有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also not suitable for the printing industry with high anti-counterfeiting requirements such as banknotes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, the manufacturing process of iron-nickel-copper-chromium multi-layer pre-coated photosensitive etching offset lithography is:

[0029] 1. Sheet metal processing: Select a 0.5mm thick cold-rolled iron sheet that requires specifications and sizes. The thickness tolerance of the sheet is required to be ±0.005mm. After surface treatment, nickel, copper, and chromium are electroplated on the surface in sequence. Surface treatment is mainly to increase the specific surface area of ​​the printing contact surface of the plate, which is conducive to better spreading and adsorption of water and ink on the plate during the printing process, and improves the printing suitability of the printing plate. Surface treatment is required before chrome plating, and the usual treatment method for surface treatment is to grind one side of the plate with emery of more than 300 mesh. After electroplating and synthesizing the iron-nickel-copper-chromium structure plate, the plate ...

Embodiment 2

[0036] Embodiment 2, copper-chromium double-layer pre-coat photosensitive etching offset lithography manufacturing process is:

[0037] 1. Sheet material processing: Select the 0.3mm thick cold-rolled copper sheet or electrolytic copper sheet that requires specifications and sizes. The thickness tolerance of the sheet is required to be ±0.005mm. After surface treatment, a layer of metal chromium is deposited on the surface by vacuum coating. That's it. The surface treatment method is the same as in Example 1. The thickness tolerance of the processed copper-chromium structure plate is ±0.01mm, the thickness of the chromium layer is 0.005-0.01mm, the layout is required to be flat, the grain size is fine and uniform, and there are no holes or scratches.

[0038] 2. Coating: Coating the photoresist material on the surface of the chromium layer can make a copper-chromium double-layer pre-coated photosensitive etching offset lithographic plate. Concrete process is with embodiment ...

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PUM

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Abstract

The invention discloses a production method of precoated photosensitive etching printed board, which precoats a durable photo-induced etching-resist material of stable photochemical property on the surface of a two-layer or multilayer metal plate synthesized by electric plating, vacuum deposition and the like, to prepare a precoated photosensitive etching printed board. In board making, the precoated photosensitive etching printed board can be burnt, developed, etched and removed with film to product a metal printed board. The produced precoated board can be stored without light for at least one year to satisfy the printing demands of anti-false products with large printed mass such as bank notes and valuable securities and the like. The board making can adopt large power UV light source direct board making device (CTcP), to improve the quality of printed boards and the consistence of repeated production. The precoated photosensitive board can reduce the production period of printed boards and improve production efficiency.

Description

technical field [0001] The invention relates to a method for making a pre-coated photosensitive etching printing plate, which belongs to the field of printing plate making, and in particular refers to a method for making an offset lithography plate used in mass printing of banknotes and other high-volume anti-counterfeiting products. Background technique [0002] Banknote products refer to banknotes and securities, which have a huge printing volume and require high printing plate durability. For a long time, my country's banknote printing has widely used a printing plate with a double-layer or multi-layer metal structure with extremely high printing resistance. The printing resistance of offset lithographic plates with this structure is stable at more than 1.5 million impressions. The production method of this printing plate mainly adopts the method of chemical etching at present, and the basic process flow is as follows: [0003] Select and make a double-layer or multi-lay...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/42G03F7/00B41N1/08G03F7/039G03F7/004G03F7/26G03F7/16
Inventor 解传东刘静
Owner 石家庄印钞有限公司
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