Desensitizing treatment liquid for lithographic printing
US6884557B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Jan 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G13/283
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A desensitizing treatment liquid for offset printing plates, which contains a compound represented by formula (I) wherein φ represents —PO3H2, —OPO3H2, or the salt thereof and R1 represents an organic residue which may have a substituent. The desensitizing treatment liquid gives no problems to environmental pollution, is stable to the long-period storage and the continuous use, can shorten the etching treatment time, and is excellent in the desensitizing treatment ability as well as can provide an offset printing plate having a good reproducibility of highly minute images of a middle tone, screen tint, etc., and capable of printing without forming scumming at the non-image area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.