Process for the production of images
US4632891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Sep 25, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/029
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for the production of an image on a substrate comprises PA0 (i) inserting the substrate as an electrode into a liquid composition comprising PA1 (A) a cationically polymerizable material, PA1 (B) a polymerizing agent for (A) which is activated by an electric current, and PA1 (C) a photosensitive material, PA0 (ii) passing an electric current through the liquid composition between the substrate and another electrode, such that a photosensitive layer of essentially solid, polymerized material is deposited on the surface of the substrate, PA0 (iii) removing the substrate from the liquid composition, PA0 (iv) exposing the photosensitive layer to actinic radiation in a predetermined pattern so as to effect a difference in solubility between exposed parts and unexposed parts of the layer, and PA0 (v) removing more soluble parts of the layer by treatment with a solvent, leaving less soluble parts of the layer on the substrate. Typically, (A) is an epoxide resin, (B) is potassium hexafluorophosphate and (C) is a photocurable acrylate or a quinone diazide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.