Silver halide emulsion and photosensitive material
US5807663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Jan 5, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide emulsion comprising silver halide grains. In them, 60 or more percent of the total area of all silver halide grains are occupied by tabular silver halide grains having a circle equivalent diameter of 0.6 .mu.m or less, an aspect ratio of 1.5 or more, and having dislocation lines substantially localized only in the fringe portions thereof. Also, 50 or more percent of the number of all silver halide grains are occupied by tabular silver halide grains having 10 or more dislocation lines per grain. In addition, the surface silver iodide content of all silver halide grains is 3 mol % or less when analyzed by X-ray photoelectric spectroscopy (XPS).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.