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Lithographic printing plate precursor and lithographic printing method

一种平版印刷版、前体的技术，应用在平版印刷版前体领域，能够解决操作错误、印刷版不能识别等问题

Active Publication Date: 2005-07-27
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, in the case of an in-line developed or non-processed (non-developed) type lithographic printing plate precursor that does not require a developing process, the image does not appear on the printing plate at the stage of mounting the printing plate on the printing press, and the printing plate cannot be recognized
As a result, operational errors sometimes occur

Method used

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  • Lithographic printing plate precursor and lithographic printing method
  • Lithographic printing plate precursor and lithographic printing method
  • Lithographic printing plate precursor and lithographic printing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0400]

[0401] A 0.3 mm-thick aluminum plate (mechanism material: JIS1050) was degreased at 50° C. for 30 seconds with a 10% by mass aqueous solution of sodium aluminate to remove roll oil on the surface of the plate. Then, by using three nylon brushes inserted with bundled bristles with a diameter of 0.3 mm and an aqueous suspension of pumice with a median diameter of 25 μm (specific gravity: 1.1 g / cm 3 ) to make the surface of the aluminum plate rough, and then wash it thoroughly with water. The plate was immersed in a 25% by mass sodium hydroxide aqueous solution at 45°C for 9 seconds, then washed with water, immersed in 20% by mass of nitric acid at 60°C for 20 seconds, and then washed with water. At this time, the amount of etching on the granular surface is about 3g / m 2 .

[0402] Then, the Al plates were subjected to continuous electrochemical surface roughening using AC at 60 Hz. The electrolytic solution used here is a 1% by mass nitric acid aqueous solution (co...

Embodiment 2

[0437] A coating solution (2) for a photosensitive-thermosensitive layer except having the following components was bar-coated and then dried in an oven at 100°C for 60 seconds to form 2 A lithographic printing plate precursor was obtained in the same manner as in Example 1 except for the dry coating amount of the photosensitive-thermosensitive layer.

[0438] Coating solutions for photo-thermo-sensitive layers (2):

[0439] Infrared absorber (1) 0.3g

[0440] Polymerization initiator (1) 0.9g

[0441] Binder polymer (1) shown below 2.5g

[0442] Polymerizable compound Isocyanuric acid EO-modified triacrylate, (NK Ester M-315, manufactured by Shin-Nakamura Chemical Co., Ltd.) 5.4 g

[0443] Triazine compound (1) 0.1g

[0444] Colorless crystal violet (manufactured by Tokyo Kasei Kogyo Co., Ltd.) 0.8 g

[0445] Fluorosurfactant (1) 0.1g

[0446] Methanol 4g

[0447] Methyl ethyl ketone 96g

[0448] Binder polymer (1):

[0449]

[0450] Weight average molecular weigh...

Embodiment 3

[0452] A coating solution (3) for a photosensitive-thermosensitive layer except having the following components was bar-coated and then dried in an oven at 80°C for 60 seconds to form 2 A lithographic printing plate precursor was obtained in the same manner as in Example 1 except for the dry coating amount of the photosensitive-thermosensitive layer.

[0453] Coating solution (3) for photo-thermosensitive layer:

[0454] Infrared absorber (2) shown below 0.3g

[0455] Polymerization initiator (1) 0.9g

[0456] Binder polymer (1) 2.5g

[0457] Polymerizable compound Pentaerythritol triacrylate (SR444, manufactured by Nippon Kayaku Co., Ltd.) 5.4 g

[0458] Microcapsules (2) (based on solid content) 2.5g

[0459] Fluorosurfactant (1) 0.1g

[0460] Methanol 10g

[0461] water 35g

[0462] Propylene Glycol Monomethyl Ether 50g

[0463] Infrared absorber (2):

[0464]

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Abstract

An on-press development or non-processing (non-development) type lithographic printing plate precursor capable of giving a printout image having a large lightness difference, and a lithographic printing method using this lithographic printing plate precursor are provided, a lithographic printing plate precursor comprising a support and a photosensitive-thermosensitive layer capable of recording an image by infrared laser exposure, the lithographic printing plate precursor being capable of performing a printing by loading on a printing press without passing through a development processing step after recording an image, or by recording an image after loading on a printing press, wherein said photosensitive-thermosensitive layer comprises (1) an infrared absorbent and (2) a discoloring agent or discoloration system capable of generating a color change upon exposure; and the lithographic printing method performing a printing using the above-described lithographic printing plate precursor.

Description

technical field [0001] The present invention relates to a lithographic printing plate precursor and a lithographic printing method using the lithographic printing plate precursor. More specifically, the present invention relates to a lithographic printing plate precursor capable of directly preparing a printing plate by scanning an infrared laser based on a digital signal of a computer or the like, which enables printing without After a development treatment step, the present invention also relates to a lithographic printing method for printing by using the lithographic printing plate precursor. Background technique [0002] Lithographic printing plates generally include oleophilic imaged areas that receive ink during the printing process and hydrophilic non-imaged areas that receive conditioning solutions. Lithography is a printing method that utilizes the mutual repellency of water and ink, in which both the oleophilic imaged areas and the hydrophilic non-imaged areas of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41C1/10B41M5/28B41M5/30
CPCB41M5/30B41M5/28B41C1/1008B41C1/1016B41C2201/02B41C2201/06B41C2201/10B41C2201/14B41C2210/04B41C2210/08B41C2210/22B41C2210/24
Inventor 大岛康仁因埜纪文柿野龙辉
Owner FUJIFILM CORP
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