Process for forming images
US4237212A · kind A · utility
7Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Feb 13, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image-forming agent selected from polyacids of molybdenum and tungsten and salts and complexes of these polyacids and disposed as a layer on at least one surface of a support substrate is reduced thereby being caused to undergo coloring in the form of an image and is then irradiated over its entire surface including thus colored parts and yet uncolored parts with long wavelength light rays which are absorbable by only the colored parts thereby to produce a colored image wherein the optical density of only the colored parts is selectively increased to a remarkable degree.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.