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:
Nov. 06, 1990
Filed:
Sep. 30, 1988
Naoyasu Deguchi, Kanagawa, JP;
Satoshi Nagaoka, Kanagawa, JP;
Noriyuki Inoue, Kanagawa, JP;
Shigeo Hirano, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A direct positive image forming method comprising development processing an imagewise exposed photographic light-sensitive material comprising a support having thereon at least on photographic emulsion layer containing internal latent image type silver halide grains not having been previously fogged in the presence of a nucleating agent, wherein the nucleating agent comprises at least two kinds of nucleating agents and a ratio of nucleating rates thereof is at least 2.0. In accordance with the method of the present invention, images having both a low minimum density and an extremely high maximum density can be rapidly and stably obtained using a small amount of nucleating agents.