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:
Mar. 10, 1981
Filed:
Jun. 11, 1979
Shigetoshi Ono, Minami-ashigara, JP;
Tooru Harada, Minami-ashigara, JP;
Shinsaku Fujita, Minami-ashigara, JP;
Yoshinobu Yoshida, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A photographic light-sensitive sheet for the color diffusion transfer process which comprises a support having thereon at least one light-sensitive silver halide emulsion layer having associated therewith a compound represented by the following general formula (1): ##STR1## wherein Q.sup.1 represents a hydrogen atom; a halogen atom; a sulfamoyl group represented by the formula --SO.sub.2 NR.sup.3 R.sup.4 wherein R.sup.3 represents a hydrogen atom, or an alkyl group, m represents 0 or 1, R.sup.4 represents a hydrogen atom or R.sup.4a wherein R.sup.4a represents an alkyl group, an aralkyl group or a phenyl group, and R.sup.3 and R.sup.4 may combined directly or through an oxygen atom to form a ring; a group represented by the formula --SO.sub.2 R.sup.5 wherein R.sup.5 represents an alkyl group or an aralkyl group; a carboxy group; a group represented by the formula --COOR.sup.6 wherein R.sup.6 represents an alkyl group or a phenyl group; or a group represented by the formula --CONR.sup.3 R.sup.4 wherein R.sup.3 and R.sup.4 each has the same meaning as defined above; Q.sup.2 is positioned at the 5- or the 8-position to the G group and represents a hydroxy group, a group represented by the formula --NHCOR.sup.4a or a group represented by the formula --NHSO.sub.2 R.sup.4a wherein R.sup.4a has the same meaning as defined above; R.sup.1 and R.sup.2, which may be the same or different, each represents an alkyl group or an alkoxy group; BG is a bridging group; Y represents a redox center which functions to release a diffusible dye as a result of self cleavage upon oxidation; and G represents a hydroxyl group, a salt thereof, or a hydrolyzable acyloxy group represented by the formula ##STR2## wherein E represents an alkyl group or an aryl group. The compound is a dye image providing material which provides a magenta dye image having superior properties.