1Postitve-working imaging composition and element and method of forming positive image with a laser
US6060222A · kind A · utility
17Cited by
28References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A positive image can be obtained from a positive-working element that is sensitive to infrared radiation. The element comprises an imaging layer containing an alkali-soluble reactive resin (such as a phenolic resin), an infrared radiation absorbing compound, a thermochemical acid generating compound, and a dissolution inhibitor that has acid-cleavable C--O--C groups. Upon laser exposure, a Bronsted acid is generated which then breaks the bonds of the C--O--C groups, allowing the exposed regions of the reactive resin to be solubilized in an alkaline developer solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.