Radiation sensitive element with a dye-containing auxiliary layers
US5169747A · kind A · utility
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13References
11Claims
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Key dates
| Filing date | Apr 21, 1992 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Apr 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved radiation-sensitive elements comprise a support; a radiation-sensitive layer; and an auxiliary layer comprising an absorbing amount of an anionic dye, and a synthetic amphoteric polymer comprising: acrylic acid and N,N-dialkylaminoethyl methacrylate; wherein alkyl=methyl or ethyl, the molar ratio of (a):(b).ltoreq.1:1; said polymer has an isoelectric point of 7.0-11.2; and said polymer is present in said auxiliary layer in an amount sufficient to mordant said anionic dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.