Methine yellow density correction dyes for color negative films with magnetic recording layers
US5725999A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1995 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Dec 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/162
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a multilayer color negative photographic element comprising a support, at least one light-sensitive silver halide layer sensitive to each of the blue, green and red regions of the visible spectrum, a magnetic recording layer and a yellow or orange-yellow methine density correction dye of structure I, ##STR1## wherein R.sub.1 is hydrogen or an alkyl group; PA1 R.sub.2 is an alkyl group or an aryl group; PA1 R.sub.3 is hydrogen, a halogen atom, an alkyl group, an alkoxy group or an aryloxy group; PA1 R.sub.4 is hydrogen or an alkyl group; PA1 R.sub.5 is hydrogen or an alkyl group; PA1 R.sub.6 is hydrogen or an alkyl group; PA1 X is oxygen or sulfur; each R.sub.7 is independently a substituent selected from the group consisting of a halogen atom, and alkyl, aryl, alkoxy, aryloxy, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, acyl, sulfamoyl, sulfonyl, sulfoxyl, alkylthio, arylthio and cyano groups; PA1 R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 may join to form a ring. The element exhibits improved color balance permitting it to be satisfactorily processed together with conventional photographic elements to produce viewable color…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.