Title:
WATERLESS PLANOGRAPHIC PRINTING ORIGINAL PLATE, METHOD FOR PRODUCING WATERLESS PLANOGRAPHIC PRINTING PLATE, METHOD FOR SORTING WATERLESS PLANOGRAPHIC PRINTING PLATE, AND METHOD FOR PRODUCING PRINTED MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/026776
Kind Code:
A1
Abstract:
A waterless planographic printing original plate which sequentially comprises at least a base material, a heat-sensitive layer and an ink-repellent layer in this order, wherein: the base material has a white layer or a white surface; and the heat-sensitive layer contains at least (a) an infrared absorbing dye that has a maximum absorption wavelength of 700 to 1,000 nm, (b) a dye that develops a color by acceptance of a proton, and (c) a proton-donating compound. Consequently, the present invention provides a waterless planographic printing original plate which enables the achievement of a high contrast between an image part and a non-image part by means of light exposure without requiring a special layer.
Inventors:
KUSE YASUNORI (JP)
KASE YUKI (JP)
INOUE TAKEJIRO (JP)
KASE YUKI (JP)
INOUE TAKEJIRO (JP)
Application Number:
PCT/JP2022/029447
Publication Date:
March 02, 2023
Filing Date:
August 01, 2022
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B41N1/14; B41M1/08; G03F7/00
Domestic Patent References:
| WO2007037090A1 | 2007-04-05 |
Foreign References:
| JPS55113595A | 1980-09-02 | |||
| JP2001051409A | 2001-02-23 | |||
| JPS62240971A | 1987-10-21 | |||
| JPH11352674A | 1999-12-24 |
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