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Lithographic printing original plate and method for producing lithographic printing plate

A lithographic printing plate and original plate technology, which is applied in lithographic printing equipment, printing, printing technology, etc., can solve problems such as difficult to confirm images and insufficient plate inspection

Active Publication Date: 2020-02-18
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the on-press developing type or the non-processing (non-developing) type lithographic printing plate precursor that is not accompanied by the usual development treatment process, it is difficult to confirm the image on the lithographic printing plate precursor at the stage of mounting the lithographic printing plate precursor in the printing press , and cannot fully check the version

Method used

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  • Lithographic printing original plate and method for producing lithographic printing plate
  • Lithographic printing original plate and method for producing lithographic printing plate
  • Lithographic printing original plate and method for producing lithographic printing plate

Examples

Experimental program
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Effect test

Embodiment 1～ Embodiment 12 and comparative example 1～ comparative example 3

[0499]

[0500] In order to remove rolling oil on the surface of an aluminum plate (material JIS A 1050) with a thickness of 0.3mm, after degreasing with a 10% by mass aqueous solution of sodium aluminate at 50°C for 30 seconds, bundle it with three bundles with a diameter of 0.3mm Nylon brush and pumice-water suspension with a median particle size of 25 μm (specific gravity 1.1 g / cm 3 ) to sand the surface of the aluminum plate and clean it with water. The aluminum plate was etched by immersing in 25 mass % sodium hydroxide aqueous solution at 45 degreeC for 9 seconds, and after washing with water, it was further immersed in 20 mass % nitric acid aqueous solution at 60 degreeC for 20 seconds, and it washed with water. The amount of etching on the grained surface is about 3g / m 2 .

[0501]Next, electrochemical roughening treatment was continuously performed using an AC voltage of 60 Hz. The electrolytic solution was a 1% by mass nitric acid aqueous solution (containing 0....

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Abstract

Provided are: a lithographic printing original plate which has an image recording layer on a hydrophilic supporting body, and which is configured such that the image recording layer contains an infrared absorbing dye that is decomposed when exposed to infrared light and a color developer that is caused to develop a color when exposed to infrared light; and a method for producing a lithographic printing plate with use of this lithographic printing original plate.

Description

technical field [0001] The invention relates to a lithographic printing plate original plate and a method for making the lithographic printing plate. Background technique [0002] In general, a lithographic printing plate is composed of an oleophilic image portion that receives ink during printing and a hydrophilic non-image portion that receives fountain solution. Lithographic printing is a method in which the lipophilic image portion of a lithographic printing plate is used as an ink receiving portion, and the hydrophilic non-image portion is used as a fountain solution receiving portion (ink non- Receiving part) produces a difference in the adhesion of ink on the surface of the lithographic printing plate, and after the ink lands only on the image part, the ink is transferred to a printed object such as paper for printing. [0003] Currently, image exposure using a CTP (Computer-to-Plate) technique is performed in a plate-making process for producing a lithographic print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/14B41C1/055G03F7/00G03F7/004G03F7/027
CPCG03F7/00G03F7/004G03F7/027B41C1/1008B41C2210/22B41C2210/04B41C2210/08B41C2210/06B41C2210/10G03F7/033
Inventor 野越启介稻崎毅榎本和朗
Owner FUJIFILM CORP