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. 02, 1999
Filed:
Dec. 19, 1997
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A development processing method which comprises the steps of: imagewise exposing a silver halide photographic light-sensitive material; and developing the exposed photographic material with a developing solution, wherein the silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer, at least one of the silver halide emulsion layer and other hydrophilic colloidal layers containing at least one hydrazine derivative; and wherein the developing solution is substantially free from a dihydroxybenzene compound, has a pH of from 9.0 to 10.5 and contains (1) at least one ascorbic acid developing agent, (2) at least one 1-phenyl-3-pyrazolidone auxiliary developing agent and (3) a compound represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.4 may be the same or different and each represents a hydrogen atom, a halogen atom or a substituent group bonded to the ring in formula (I) by a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom or a phosphorus atom, with the proviso that neither R.sub.1 nor R.sub.3 represents a hydroxyl group and that at least one of R.sub.1 to R.sub.4 is an --SM group, wherein M represents a hydrogen, atom, an alkali metal atom or an ammonium group.