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:
Jan. 21, 1992
Filed:
Mar. 05, 1991
Tetsuro Kojima, Kanagawa, JP;
Tomoyuki Koide, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A heat developable photosensitive material comprising a support having thereon at least one photosensitive silver halide emulsion layer, which contains at least one compound selected from those represented by the following general formulae (I) and (II) to acquire a high S/N ratio and high sensitivity: ##STR1## wherein R represents an alkylene group, an alkenylene group, an aralkylene group or an arylene group, which each may be substituted; Y represents ##STR2## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents a hydrogen atom, or a substituted or unsubstituted alkyl, aryl, alkenyl or aralkyl group; X represents ##STR3## R' represents a hydrogen atom, or a substituted or unsubstituted alkyl or alkenyl group; R' represents a hydrogen atom, or a substitutive group therefor; M represents a hydrogen atom, an alkali metal ion, an ammonium group, or a group capable of being cleaved under an alkaline condition; n represents 0 or 1; m represents 1 or 2; l represents 4-m; Z represents a substituted or unsubstituted amino, quaternary ammonium, sulfonyl, carbamoyl, sulfamoyl, carbonamido, sulfonamido, ureido, alkylthio, alkoxy or heterocyclic group; X' represents --O--, --S--S, or --NH--; Y' represents ##STR4## R.sub.11, R.sub.12, R.sub.13, R.sub.14, R.sub.15, R.sub.16, R.sub.17 and R.sub.18 each has the same meaning as R.sub.1 to R.sub.10.