Photographic element containing emulsion with particular blue sensitivity
US5576157A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color photographic negative element which has a transparent base and a blue sensitive silver halide emulsion layer. The foregoing blue sensitive layer meets each of the following spectral sensitivity requirements: EQU S.sub.max (426-444 nm) .gtoreq.65%S.sub.max(400-500 nm) EQU IS.sub.(425-450) .gtoreq.25%(IS.sub.(400-500)) in which S.sub.max(426-444 nm) is the maximum sensitivity between 426 to 444 nm, S.sub.max(400-500 nm) is the maximum sensitivity between 400-500 nm, IS.sub.(425-450) is the integrated spectral sensitivity of the blue sensitive layer from 425 to 450 nm, and IS.sub.(400-500) is the integrated spectral sensitivity of the blue sensitive layer in the region 400-500 nm. A method for printing a negative obtained from exposing and processing an element of the foregoing type, on automatic printers which automatically compensate for color bias, is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.