Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
Hydrazone dye
 A hydrazone dye is provided which forms cyan color having an excellent hue. The hydrazone dye is expressed by the following general formula (I): ##STR1## wherein Ar represents an aryl group or a heterocyclic group; R.sup.1 through R.sup.4 each represent a hydrogen atom, a halogen, --CN, --NH.sub.2, --NO.sub.2, --OH, --CO.sub.2 H, --SO.sub.3 H, a quaternary ammonium group, --CO.sub.2 M.sub.1/n, --SO.sub.3 M.sub.1/n, an alkyl group, alkenyl group, alkynyl group, aryl group, acyl group, carbamoyl group, sulfamoyl group, alkoxycarbonyl group, aryloxycarbonyl group, acyloxy group, alkoxy group, aryloxy group, alkylthio group, arylthio group, alkylsulfonyl group, arylsulfonyl group, alkylphosphoryl group, arylphosphoryl group, or a substituted amino group; M represents a metal atom; and n represents an integer from 1 to 4. 
Fuji Photo Film Co., Ltd.
C
C09B
inventional
Kimiatsu Tetsunori Yohsuke Hisao Tatsuo Naoto
Nomura Matsushita Takeuchi Yamada Kawabuchi Yanagihara