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Planographic printing plate precursor, and production method for planographic printing plate

A lithographic printing plate and original technology, applied in lithographic printing equipment, printing, printing process and other directions, can solve the problems of obvious waste liquid environment and other problems, and achieve the effect of excellent brush resistance

Active Publication Date: 2020-09-18
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Also, due to the increase in concern for the global environment, environmental problems regarding waste liquid accompanying wet processing such as development processing have become apparent

Method used

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  • Planographic printing plate precursor, and production method for planographic printing plate
  • Planographic printing plate precursor, and production method for planographic printing plate
  • Planographic printing plate precursor, and production method for planographic printing plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～14 and comparative example 1～3

[0571]

[0572] An aluminum alloy plate of material 1S with a thickness of 0.3 mm was subjected to mechanical roughening treatment (A-a) described in paragraph 0126 to (A-i) described in paragraph 0134 of JP-A-2012-158022. ) Decontamination treatment in acidic aqueous solution.

[0573] Next, each treatment from (A-j) first-stage anodizing treatment described in paragraph 0135 to (A-m) third-stage anodizing treatment described in paragraph 0138 of JP-A-2012-158022 is appropriately adjusted. Conditions, forming an anodic oxide film having a large-diameter hole with an average diameter of 35 nm and a depth of 100 nm and a small-diameter hole with an average diameter of 10 nm and a depth of 1000 nm, and the ratio of the depth of the large-diameter hole to the average diameter of the large-diameter hole is 2.9 , thereby obtaining an aluminum support A.

[0574] In addition, water washing treatment is implemented between all the treatment steps, and after water washing treatment...

Embodiment 15～18 and comparative example 4～6

[0651] As the support, the following support C was used instead of support A, the image recording layer coating liquid (2) of the following composition was bar-coated instead of the above image recording layer coating liquid (1), and the oven was baked at 70°C. Dry for 60 seconds to form a dry coating weight of 0.6g / m 2 The image-recording layer of the lithographic printing plate was produced. Formation of an undercoat layer and a protective layer was not performed.

[0652]

[0653] In order to remove the rolling oil on the surface of an aluminum plate (material JIS A 1050) with a thickness of 0.3 mm, a 10% by mass sodium aluminate aqueous solution was used for degreasing treatment at 50°C for 30 seconds, and then three bundles with a bundle diameter of 0.3 mm were used. Nylon brush and pumice (pumice) with a median particle size of 25 μm-water suspension (specific gravity 1.1g / cm 3 ) Granulate the surface of the aluminum plate and wash it thoroughly with water. The alum...

Embodiment 19～21、 comparative example 7～9

[0691] As described in the following Table 5, except for changing the type and addition amount of the "polymer A described in Table 3" contained in the photosensitive liquid (1) in Example 1, by the same procedure as in Example 1 The original lithographic printing plate was produced by the method.

[0692]

[0693] The lithographic printing plate after exposure was developed at 25° C. using Clean Out Unit+C85 manufactured by Glunz & Jensen.

[0694] Here, the "development treatment" refers to a composite treatment including one or more treatments selected from the group including removal of the protective layer, gumming and drying, in addition to the development of the image recording layer. As the processing liquid used in the development processing, a developer having the following composition was used. In this development process, the water washing process was not performed.

[0695] 〔developer〕

[0696] ・PELEX NBL (sodium alkylnaphthalene sulfonate, anionic surfactant...

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Abstract

Provided is a planographic printing plate precursor that includes a support and an image-recording layer formed on the support. The image-recording layer contains a polymer A comprising a structural unit A1 having an ethylenic unsaturated group. The weight-average molecular weight of the polymer A is 2,500-35,000. The content of the structural unit A1 in the polymer A is 15 mol% or more. Also provided is a production method for a planographic printing plate using said planographic printing plate precursor.

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] Typically, 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 portion) by utilizing the property that water and oily ink repel each other. , A difference in the adhesion of the ink occurs on the surface of the lithographic printing plate, and after the ink is applied only to the image portion, the ink is transferred to a printed object such as paper and printed. [0003] In order to produce such a lithographic printing plate, a lit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/14G03F7/00G03F7/004G03F7/031G03F7/038
CPCG03F7/031G03F7/038G03F7/00G03F7/004B41C1/1008B41C1/10B41C2210/08B41C2210/22B41C2210/24B41C2210/10B41C2210/06B41C2210/04B41N1/14G03F7/0045
Inventor 榎本和朗荒木健次郎
Owner FUJIFILM CORP
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