SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL

PURPOSE:To obtain high sensitivity and high contrast and high blackened density even in the case of processing with a low pH developing solution by incorporating 2 kinds of specified hydrazine derivatives in a emulsion layer or another hydrophilic colloidal layer. CONSTITUTION:At least one of the si...

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Bibliographic Details
Main Authors YAMAMOTO SEIICHI, ARAI KAZUMI
Format Patent
LanguageEnglish
Published 12.03.1993
Subjects
AUXILIARY PROCESSES IN PHOTOGRAPHY
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES
PHOTOGRAPHY
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES
PHYSICS
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Summary:PURPOSE:To obtain high sensitivity and high contrast and high blackened density even in the case of processing with a low pH developing solution by incorporating 2 kinds of specified hydrazine derivatives in a emulsion layer or another hydrophilic colloidal layer. CONSTITUTION:At least one of the silver halide emulsion layers and other hydrophilic colloidal layers formed on a support contains the 2 kinds of hydrazine derivatives represented by formulae I and II in which R1 is an aliphatic or aromatic group partially substituted by -O-(CH2CH2O)n- or the like or a quaternary ammonium cation; n is an integer of >=3; G1 is -CO or the like; G2 is a simple bond or -O- or the like; R2 is an aliphatic or the like; one of A1 and A2 is H and the other is H, acyl, or the like; R11 is a heterocyclic group or the like; R12 is alkyl or the like; and G11 is carbonyl or the like.
Bibliography:Application Number: JP19910246493