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Printing plate material

A technology for printing plates and base materials, applied in printing, printing plates, printing processes, etc., can solve problems such as insufficient printing resistance, development, sensitivity, printing resistance, heat and humidity resistance, and insufficient sensitivity, etc. problems, to achieve excellent print resistance, good on-machine developability, and high sensitivity

Inactive Publication Date: 2009-11-04
KONICA MINOLTA MEDICAL & GRAPHICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, such a printing plate material still has insufficient sensitivity, and there is a problem that the printing durability is insufficient for the exposure energy used in practical use.
[0016] As mentioned above, it is very difficult for hot-melt adhesive printing plate materials to simultaneously satisfy the properties of on-press developability, sensitivity, printing resistance, heat resistance and humidity resistance.

Method used

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  • Printing plate material
  • Printing plate material
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0182] Hereinafter, the present invention will be specifically described based on examples, but the present invention is not limited thereto. In addition, "parts" in the examples mean "parts by mass" unless otherwise specified. In addition, numerical values ​​without units given in the tables represent parts by mass.

[0183] (Making of base material)

[0184] Base materials were prepared as follows.

[0185] [Support 1]

[0186] An aluminum plate (material 1050, tempered H16) with a thickness of 0.24mm is immersed in a 1% by mass sodium hydroxide aqueous solution at 50°C, and dissolved so that the dissolved amount becomes 2g / m 2 , After washing with water, it was immersed in a 5% by mass nitric acid aqueous solution at 25° C. for 30 seconds to perform a neutralization treatment, and then washed with water.

[0187] Next, pass through the electrolyte containing 11g / L hydrochloric acid, 10g / L acetic acid, and 8g / L aluminum, using sine wave alternating current, at a peak cur...

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PUM

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Abstract

A printing plate material for use in CTP systems which has high sensitivity and is excellent in printing resistance and storage stability while retaining satisfactory on-press developability. This printing plate material comprises a base and an image-forming layer formed thereon, and is characterized in that the image-forming layer contains the following (A1) or (A2). (A1) Polymer particles having a glass transition temperature (Tg) of 70 DEG C or higher formed by the emulsion polymerization of a polymerizable carboxylated monomer and a polymerizable amidated monomer; (A2) polymer particles having a core / shell structure formed by emulsion polymerization in which the shells of the polymer particles are made of a polymer having a glass transition temperature (Tg) of 70 DEG C or higher obtained by the polymerization of a polymerizable carboxylated monomer and a polymerizable amidated monomer.

Description

technical field [0001] The present invention relates to a printing plate material, in particular to a printing plate material used in computer to plate (Computer To Plate: CTP). Background technique [0002] Currently, in the printing field, printing using the CTP method is beginning to be carried out along with the digitalization of printing image data, but this printing requires CTP printing that is inexpensive, easy to operate, and has the same printing adaptability as the conventional so-called PS plate. Edition material. [0003] In particular, in recent years, as a direct imaging (hereinafter referred to as DI) performance without using a special developer for development, it can be used in printing machines with this function, and has the same usability as PS plates. Plate materials require a general-purpose processless plate. [0004] An infrared laser recording method having near-infrared to infrared wavelengths is mainly used for image formation of heat-free plat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41N1/14G03F7/00G03F7/004G03F7/11
CPCB41C2210/22B41C2201/14B41C1/1025B41C2210/24B41C2210/04B41C2210/08B41C2201/04B41C2201/02Y10T428/254
Inventor 森孝博
Owner KONICA MINOLTA MEDICAL & GRAPHICS INC
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