Method of forming images
US4849320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Apr 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/148
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a process for the production of an image which comprises PA0 (i) applying to a substrate a layer of a liquid composition comprising PA1 (A) a cationically polymerizable residue PA1 (B) a radiation-activated polymerization initator for (A) PA1 (C) a radiation-curable residue that is different from (A) and optionally PA1 (D) a radiation activated initiator for the cure of (C), PA0 (ii) subjecting the composition to actinic radiation having a wavelength at which initiator (B) is activated but at which the residue (C) and/or initiator (D) is not substantially activated, followed by heating, if necessary, so that (A) is polymerized and the layer of liquid composition is solidified, but remains curable, PA0 (iii) subjecting the solidified layer in a predetermined pattern to actinic radiation having a wavelength that is different from that of the radiation used in stage (ii) and at which the radiation-curable residue (C) and/or the initiator (D) is activated, such that in the exposed areas (C) is substantially cured, and PA0 (iv) removing areas of the solidified layer that have not been substantially cured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.