Invention Publication
- Patent 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
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Application No.: US18573821Application Date: 2022-08-01
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Publication No.: US20240308202A1Publication Date: 2024-09-19
- Inventor: Yasunori KUSE , Yuki KASE , Takejiro INOUE
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Priority: JP 21136047 2021.08.24
- International Application: PCT/JP2022/029447 2022.08.01
- Date entered country: 2023-12-22
- Main IPC: B41C1/10
- IPC: B41C1/10 ; B41M5/025 ; B41N1/00 ; G03F7/105

Abstract:
Disclosed is a waterless planographic printing plate precursor including at least a substrate, a heat sensitive layer and an ink repellent layer in this order, wherein the substrate has a white color layer or a white color surface, and wherein the heat sensitive layer includes at least (a) an infrared-absorbing dye having a maximum absorption wavelength of 700 to 1,000 nm, (b) a dye that changes color by proton acceptance, and (c) a proton-donating compound. The present invention provides a waterless planographic printing plate precursor capable of obtaining high contrast between the image area and the non-image area by exposure without the need for a special layer.
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