Color diffusion transfer photographic elements
US4149892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1977 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Jun 29, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel color diffusion transfer photographic element is disclosed which is characterized as having a photosensitive element containing a compound represented by the formula ##STR1## wherein A represents oxygen or a group of the formula .dbd.NR (in which R represents hydroxyl or an amino group); X represents hydrogen or halogen; Z represents a group of nonmetallic atoms necessary to form a first ring and being a 5 to 7-membered nonaromatic hydrocarbon ring which may be fused with a second ring, at least one of said first ring and said second ring having one or more substituents wherein at least one of said substituents is a ballast group which renders said compound nondiffusible during processing with said solution; J represents a divalent group; D represents a dye moiety or a dye precursor moiety; and n represents zero or 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.