Manufacture of lithographic printing forms
US6461795B1 · kind B1 · utility
14Cited by
20References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Apr 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Phenolic resin compositions formulated for use in lithographic exposure processes are given a heat treatment at 40-90° C. for at least 4 hours shortly after their coating onto lithographic substrates, to produce lithographic printing forms. It is found that such a heat treatment improves later exposure processes, in particular by rendering the sensitivity of the compositions less variable, over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.