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:
Jul. 11, 1989
Filed:
Nov. 29, 1988
Applicant:
Inventors:
Assignee:
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430569 ; 430596 ; 430605 ; 430606 ;
Abstract
A process for manufacturing a silver halide direct positive type emulsion comprising primarily silver bromide prepared in the presence of a water-soluble rhodium salt said process comprising; simultaneously adding and mixing a silver aqueous solution and a halide aqueous solution to form an aqueous solution containing a hydrophilic colloid, said resultant mixture having a silver potential maintained with a range of from 100 mV to 200 mV, the speed at which the solutions are added being not more than the critical growth speed of existing silver halide grains, and fogging said silver halide grains.