Method of making lithographic printing plate substrate and imageable elements

A technology of aluminum substrate and imaging layer, which is applied in the preparation of printing surface, printing, metal material coating process, etc., can solve the problems affecting hydrophilicity, printability, adhesion or other properties, and achieve improvement Substrate hydrophilicity, improved printability, effect of improved ink repellency

Inactive Publication Date: 2010-03-24
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This variability in aluminum substrates may adversely affect its hydrophilicity, printability, adhesion, or other properties

Method used

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  • Method of making lithographic printing plate substrate and imageable elements
  • Method of making lithographic printing plate substrate and imageable elements
  • Method of making lithographic printing plate substrate and imageable elements

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0212] Preparation of Imageable Elements

[0213] Imageable elements can be prepared by applying one or more imageable layer formulations to the surface of the aluminum-containing substrates of the present invention. Multiple layers may be applied sequentially using conventional coating or lamination methods, such as applying an inner layer formulation followed by an outer layer formulation over the inner layer. It is important to avoid blending of inner and outer layer formulations.

[0214] The various layers can be applied by dispersing or dissolving the desired ingredients in a suitable coating solvent and using suitable equipment and procedures (e.g. spin coating, knife coating, gravure coating, die coating, slot coating, rod coating , wire rod coating, roll coating or extruder hopper coating) the resulting formulations are applied sequentially or simultaneously to the substrate. The formulations may also be applied by spraying onto a suitable support, for example on a ...

Embodiment

[0233] The components and materials used in the examples and analytical methods are as follows:

[0234] Binder A represents a copolymer of N-phenylmaleimide, methacrylamide and methacrylic acid (40.2:34.9:24.9 mol%).

[0235] BLO stands for gamma-butyrolactone.

[0236] DEK stands for diethyl ketone.

[0237] Ethyl violet is C.I.42600 (CAS 2390-59-2, λ max =596nm), has the chemical formula (p-(CH 3 CH 2 ) 2 NC 6 h 4 ) 3 C + Cl - (Aldrich Chemical Company, Milwaukee, WI, USA).

[0238] IR Dye A was obtained from Eastman Kodak Company and has the following structure:

[0239]

[0240] IR Dye A

[0241] IR Dye B was obtained from FEW Chemicals GmbH and has the following structure:

[0242]

[0243] IR Dye B

[0244] D11 is a colorant obtained from PCAS (Longjumeau, France) and has the following structure:

[0245]

[0246] P3000 is the 215 naphthoquinonediazide sulfonate of pyropalmitol acetone condensate obtained from PCAS (Longjumeau, France).

[0247] P...

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PUM

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Abstract

Aluminum-containing substrates having an anodic oxide layer are coated with a interlayer by carefully controlling the concentration of phosphonic acid groups in an interlayer polymer and aluminum (+3)concentration in a post-treatment solution. These substrates have improved hydrophilicity, lithographic printing ink repellency, and overall improved printability when used as part of lithographic printing plates.

Description

field of invention [0001] The present invention relates to methods of making aluminum-containing substrates and imageable elements, such as lithographic printing plate precursors, made from such substrates. Background of the invention [0002] In conventional or "wet" lithography, the ink-receiving areas (referred to as image areas) are created on a hydrophilic surface. When such a surface is wetted with water and ink is applied, the hydrophilic regions retain the water and repel the ink, and the ink-receiving regions accept the ink and repel the water. The ink is transferred to the surface of the material on which the image is to be reproduced. For example, the ink may first be transferred to an intermediate transfer blanket, which in turn is used to transfer the ink to the surface of the material on which the image is to be reproduced. [0003] Imageable elements useful in making lithographic printing plates typically include an imageable layer applied to a hydrophilic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/83B41N3/03
CPCC25D11/24B41N3/038
Inventor Y·米亚莫托
Owner EASTMAN KODAK CO
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