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:
Mar. 30, 1993
Filed:
Dec. 23, 1991
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
For formation of a photographic image by development of a silver halide photographic material with an automatic developing machine, a certain period of time or not longer than 15 seconds is set as the time of the development step and a silver halide photographic material is used which, when developed for a period of one-half of said certain period of time after such an exposure that the exposed silver halide photographic material, when developed for said certain period of time, would give a value of (Dmax-fog).times.1/2, gives a value of (D-fog) having 70% or more of the value of (Dmax-fog).times.1/2. The silver halide photographic material comprises at least one of a combination of (1), (2) and (3) or (2) and (4): where: (1) represents a silver halide emulsion containing a water-soluble iridium salt; (2) represents a silver halide emulsion layer with a silver amount from 1 to 3.5 grams/m.sup.2 coated on one surface of said emulsion layer; (3) represents silver halide grains wherein the mean grain size is 1.0 .mu. or less; and (4) represents tabular silver halide grains having an aspect ratio of 4 or more. By the rapid development procedure, a sharp image with no development unevenness (drag streaks) can be obtained and the automatic developing machine to be used may be made small-sized and compact.