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. 15, 1994
Filed:
Mar. 23, 1994
Kenichi Inoue, Hino, JP;
Tsuyoshi Mitsuhashi, Hino, JP;
Konica Corporation, , JP;
Abstract
A developer for developing a silver halide photographic material is disclosed. The developer comprises a compound represented by Formula 1 or Formula 2; ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time; R.sub.5 is a hydroxy group, an amino group or an alkyl group having 1 to 3 carbon atoms; R.sub.6 and R.sub.7 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an acyl group having 1 to 18 carbon atoms or a --COOM.sub.2 group, provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, in the above M.sub.1 is a hydrogen atom, an alkali metal atom or an ammonium group; m is an integer 0, 1 or 2; and M.sub.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkali metal atom, an aryl group or an aralkyl group having not more than 15 carbon atoms. Formation of silver sludge in the developer is prevented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile