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A low-chemical treatment violet laser photopolymerization type lithographic printing plate

A lithographic printing plate, photopolymerization technology, applied in the direction of printing, printing process, printing surface preparation, etc., can solve the problems of machine strength, seriousness, corrosion, etc., achieve good chemical treatment, good developing performance, high printing durability Effect

Active Publication Date: 2016-06-29
LUCKY HUAGUANG GRAPHICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the exposed printing plate is processed in a strong alkaline developer with a pH>10. The developer with a pH>10 is more alkaline and will corrode the machine during use. Environmental pollution is relatively serious

Method used

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  • A low-chemical treatment violet laser photopolymerization type lithographic printing plate
  • A low-chemical treatment violet laser photopolymerization type lithographic printing plate
  • A low-chemical treatment violet laser photopolymerization type lithographic printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0219] [Production of photopolymerizable lithographic printing plates]

[0220] An aluminum coil in which a 0.30 mm-thick aluminum plate (support) was curled into a roll (coil) was fixed to a feeder. In the surface treatment part, 10% sodium hydroxide is used to immerse the aluminum plate continuously sent out from the sender at 70°C for 60 seconds, after etching, wash it with running water, and wash it with 20% HN0. 3 Perform neutralization washing and water washing. Under the condition of VA=12.7V, use the alternating waveform current of sine wave, in 1% nitric acid aqueous solution at 300 coulomb / dm 2The electrolytic surface roughening treatment is carried out on the electric current of the anode. The surface roughness thereof was measured and found to be 0.6um (expressed as Ra).

[0221] followed by immersion in 30% H 2 SO 4 In aqueous solution, after decontamination at 55°C for 2 minutes, at 33°C in 20% H 2 SO 4 In the aqueous solution, the cathode is arranged on t...

Embodiment 2-16

[0248] In Examples 2-5, the difference is that the emulsion particles P01 in the photosensitive layer coating solution composition of Example 1 are respectively replaced by emulsion particles P02-P16, and the rest are manufactured in the same way as in Example 1. Photopolymerizable lithography printed version.

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Abstract

A low-chemical treatment violet laser photopolymerization type lithographic printing plate, the photopolymerization type lithographic printing version body includes a support body, a photopolymerization type photosensitive layer is placed on the support body, and a photopolymerization type photosensitive layer is attached on the photopolymerization type photosensitive layer. There is a water-based protective layer, which is characterized in that: the photopolymerizable photosensitive layer contains a kind of nano-micron particle, which is a kind of high molecular polymer particle existing in the discrete form of emulsion. It can make the plate have a higher printing durability and good developing performance, thus providing a better low chemical treatment CTP plate precursor.

Description

technical field [0001] The invention relates to a low-chemical treatment violet laser photopolymerization photosensitive lithographic printing plate formed on an aluminum plate base, in particular to a low chemical treatment photopolymerization lithographic printing plate which can be directly plate-making by violet laser. Background technique [0002] In recent years, with the development of computer and semiconductor laser technology, photosensitive polymer materials have been widely studied and applied as laser imaging materials. Lithographic printing technology has moved from traditional laser phototypesetting film copying PS plate technology to computer-to-plate technology (CTP technology for short), and CTP plate materials are gradually becoming popular. There are many types of CTP plates, and the more popular ones include silver salt diffusion CTP plates, UV-CTP plates, purple laser polymerization CTP plates, thermal CTP plates, etc. [0003] The so-called photopolym...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41N1/08B41N3/00G03F7/004G03F7/027
Inventor 李旭东宋小伟王泳马天如孙伟涛郭伟峰李永燕
Owner LUCKY HUAGUANG GRAPHICS
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