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:
Jun. 12, 2007
Filed:
Mar. 16, 2001
Toyohisa Oya, Minami-ashigara, JP;
Kouta Fukui, Minami-ashigara, JP;
Yasuhiro Yoshioka, Minami-ashigara, JP;
Kazunobu Katoh, Minami-ashigara, JP;
Toyohisa Oya, Minami-ashigara, JP;
Kouta Fukui, Minami-ashigara, JP;
Yasuhiro Yoshioka, Minami-ashigara, JP;
Kazunobu Katoh, Minami-ashigara, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
A photothermographic material comprising at least (a) a photosensitive silver halide, (b) a reducible silver salt, (c) a reducing compound represented by the following general formula (1), and (d) a binder:Q—NHNH—R:   Formula (1)wherein, in the general formula (1), Qrepresents a 5- to 7-membered unsaturated ring bonding to NHNH—Rat a carbon atom, and Rrepresents a carbamoyl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfonyl group or a sulfamoyl group, provided that when Ris propylcarbamoyl group, Qis not 2,3,5,6-tetrachloro-4-cyanophenyl group. According to the present invention, there is provided a novel photothermographic materials showing high sensitivity, high development speed and little fluctuation of performance due to heat development temperature variation.