Photosensitive sheet materials
US3935012A · kind A · utility
4Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Jul 12, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photosensitive sheet material, containing an acid-cleavable adduct of an image-forming first reactant and a reaction inhibitor together with a photolyzable source of halogen acid, which upon exposure to a light-image liberates said first reactant for reaction with a second reactant to produce a visible image, contains a controlled small amount of an acid acceptor for reducing backgrounding and increasing contrast in the resulting print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.