Photosensitive composition and method for forming a neutral black image
US4520093A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1984 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jan 30, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/327
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive composition, a photosensitive element employing said composition, and an improved photoimaging method that utilizes the disclosed composition. The improved method concerns a photosensitive element, formed from a photosensitive composition having a substrate layered with silver halide particles in operative association with a polymeric coupler, latently imaged, developed to render the imaged area insoluble, and washed to remove the undeveloped portion of the layer, wherein the improvement comprises addition of selected dispersed pigments to the polymeric coupler so that the optical density of the final image is neutral black.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.