Method for formation of an image comprising a heating step
US4696887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1986 |
| Grant date | Sep 29, 1987 |
| Priority date | — |
| Expiry date | Feb 13, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A novel method for formation of an image comprising a heating step, comprising the heating carried out in the presence of a compound of general formula (I): EQU X--SO.sub.2 (DI) (I) wherein X represents a reducing group capable of reducing a silver salt and capable of being oxidized by heating and in its oxidized state capable of releasing a compound represented by (DI)--SO.sub.2 NH.sub.2 by reaction with a nucleophilic agent; and (DI) represents a development inhibiting group capable of inhibiting the oxidation reduction reaction of the silver salt and a reducing aent. The compound of the formula (I) functions to inhibit development after a certain period of time from the beginning of heat development. The present method provides a stable image with reduced fog and image mottle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.