Color developing agent, azo dye, silver halide photographic light-sensitive material, and image-forming method
US6555691B2 · kind B2 · utility
1Cited by
5References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 25, 2001 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A color-developing agent of the formula (1-1): wherein X represents a hydrogen atom or a substituent, and Z represents a carbamoyl, acyl, alkoxycarbonyl, or aryloxycarbonyl group. An azo dye of the formula (2-1): wherein R1 represents a hydrogen atom or a substituent, and A represents a group of atoms necessary to form the azo dye by the compound of formula (2-1). A silver halide photographic light-sensitive material containing any of the color-developing agent and the azo dye in at least one photographic constitutional layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.