The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1995
Filed:
Aug. 08, 1994
Munehisa Fujita, Kanagawa, JP;
Hiroyuki Asanuma, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
There are disclosed an internal latent image type direct positive light-sensitive emulsions having improved spectral sensitization performance, and chemical sensitization performance, and color diffusion transfer photographic film units in which said emulsions are used. The emulsions are prepared by subjecting a silver halide grain, which forms an internal nucleus, to chemical sensitization, in the presence of an organic silver halide solvent, and adding a solid adsorbing agent, before finishing the formation of an outer shell silver halide phase, to remove a part or all of the silver halide solvent, wherein the emulsions may further contain a tabular silver halide grain having an average grain diameter of at least 0.3 .mu.m and a ratio of an average grain diameter to an average grain thickness of 2 or more, based on 50% or more of the total silver halide grains.