Planographic printing original plate
US6689534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Nov 15, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C2210/262
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A positive-type planographic printing original plate for direct plate-making with an infrared laser, with excellent latitude in forming an image by development, and excellent flaw resistance. The planographic printing original plate includes, on a support, a positive-type recording layer whose solubility with respect to an alkaline aqueous solution is increased by infrared laser exposure. The recording layer contains an alkali-soluble resin, which has a fluorine atom in the molecule, and an infrared absorbing agent. The alkali-soluble resin can be provided by introducing at least one substituent having a fluorine atom to a known alkali-soluble polymer compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.