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:
Dec. 11, 1990
Filed:
Oct. 17, 1988
Mikio Ihama, Kanagawa, JP;
Yuji Kume, Kanagawa, JP;
Koji Tamoto, Kanagawa, JP;
Hiroshi Takehara, Kanagawa, JP;
Masao Arai, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide photographic emulsion comprising a hydrophilic colloid having dispersed therein tabular silver halide grains having an aspect ratio of at least 2, the grains comprising a matrix comprising at least 50 mol % silver bromide ions based on silver ions, and a high silver chloride layer on the matrix, the high silver chloride layer comprising at least 50 mol % chloride ions based on silver ions and forming a substantially uniform plane on the matrix, wherein at least 50 mol % of the high silver chloride layer is present on two basal plane surfaces of the matrix. The emulsion has improved pressure properties which are suited for rapid processing, and minimized grain aggregation and excellent suitability for preparation.