Title:
NEGATIVE TYPE SILVER HALIDE PHOTOGRAPHIC SENSITIVE MATERIAL AND IMAGE FORMING METHOD USING THIS MATERIAL
Document Type and Number:
Japanese Patent JP3052479
Kind Code:
B2
Abstract:
PURPOSE: To obtain high-contrast negative images free from peppers by subjecting the negative type silver halide photographic sensitive material contg. a specific water-soluble polymer to image exposing, then to development processing with a specific developer.
CONSTITUTION: The negative type silver halide photographic sensitive material contains the water-soluble polymer having a quaternary ammonium salt in a repeating unit in a hydrophilic colloidal layer. This water-soluble polymer is a polymer or copolymer having the repeating unit expressed by formula. In the formula, A denotes an alkylene group; B denotes an alkylene group or P-xylene group; R1 to R4 respectively denote a lower alkyl group. X- denotes anion. The negative type silver halide photographic sensitive material is subjected the image exposing, then to the development processing with an aq. alkaline developer contg. a developing agent of a dihydroxybenzene system at ≥11.5pH or an aq. alkaline developer contg. reductones or the salts thereof.
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Inventors:
Yasuhiko Kojima
Naoki Obi
Yasuo Shigemitsu
Kiyoshi Suematsu
Naoki Obi
Yasuo Shigemitsu
Kiyoshi Suematsu
Application Number:
JP25139791A
Publication Date:
June 12, 2000
Filing Date:
September 30, 1991
Export Citation:
Assignee:
Dainippon Ink and Chemicals Co., Ltd.
International Classes:
G03C1/04; G03C1/06; G03C5/29; (IPC1-7): G03C1/06; G03C1/04
Domestic Patent References:
| JP2256048A | ||||
| JP60250343A | ||||
| JP5647036A | ||||
| JP6225746A |
Attorney, Agent or Firm:
Victory Takahashi