Spectrally sensitized negative emulsion containing silver halide grains of less than 0.18 micron

Abstract

Abstract A SILVER HALIDE PHOTOGRAPHIC LIGHT-SENSITIVE EMULSION WHEREIN THE SILVER HALIDE CRYSTALS HAVE A MEAN GRAIN SIZE OF LESS THAN 0.18 MICRON, OR WHEREIN AT LEAST 95% OF THE CRYSTALS HAVE A MEAN GRAIN SIZE OF LESS THAN 0.2 MICRON AND WHEREIN AT LEAST ONE OF THE SENSITIZING DYES REPRESENTED BY THE FOLLOWING FORMULAE ARE INCORPORATED IN SUCH AN EMULSION IN AN AMOUNT OF FROM 1 TO 150 MG. PER 1 KG. OF THE EMULSION: (-N(+)(-R)-(V,V1-1,2-PHENYLENE)-Z-)>C-L1=L2-L3=C<(-Z''- (W,W1-1,2-PHENYLENE)-N(-R1)-) (X(-))N (I) (=N(+)(-R7)-(V2,V3-1,2-PHENYLENE)-Z-)>C-L=(L-L)M=C< (-Z''-(W2,W3-1,2-PHENYLENE)-N(-R8)-) (X(-))N (II) 1-R14,2-((-Z2-(W4,W5-1,2-PHENYENE)-N(-R15)-)>C=L-),V4- QUINOLINIUM (X(-))N (III) (-N(-R17)-Z3-)>C=(L-L)M=C<(-Q-CO-) (IV) (-(CH=CH)M2-N(-R19)-Z4-)>C=L5-L6=C<(-Q1-C(=L7-C<(-Z5-N(+) (-R21)=(CH-CH)M2=))-N(-R20)-CO-) (X(-))N (V)

Inventors

• 👤 Yoshiyuki Nakazawa
• 👤 Tohru Sueyoshi
• 👤 Akira Sato
• 👤 Yashiharu Nakamura

Bibliographic Details