GB1308733A - Direct positive silver halide photographic material - Google Patents

Direct positive silver halide photographic material

Info

Publication number
GB1308733A
GB1308733A GB1277171A GB1277171A GB1308733A GB 1308733 A GB1308733 A GB 1308733A GB 1277171 A GB1277171 A GB 1277171A GB 1277171 A GB1277171 A GB 1277171A GB 1308733 A GB1308733 A GB 1308733A
Authority
GB
United Kingdom
Prior art keywords
silver halide
dye
positive
direct
phenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1277171A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Publication of GB1308733A publication Critical patent/GB1308733A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C09B23/06—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups three >CH- groups, e.g. carbocyanines
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
    • C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
    • C09B23/04—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups one >CH- group, e.g. cyanines, isocyanines, pseudocyanines
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48515—Direct positive emulsions prefogged
    • G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48515—Direct positive emulsions prefogged
    • G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser
    • G03C1/4853—Direct positive emulsions prefogged characterised by the desensitiser polymethine dyes

Abstract

1308733 Direct-positive photographic silver halide material FUJI PHOTO FILM CO Ltd 3 May 1971 [4 May 1970] 12771/71 Heading G2C A direct-positive silver halide photographic material comprises a silver halide emulsion layer and at least one adjacent layer, at least one of said layers containing at least one sensitizing dye of the formula:- Wherein R and R' are each optionally substituted alkyl; L is a methine chain; Z represents the atoms necessary to form a heterocyclic nucleus having a 5- or 6-membered N-containing ring; X<SP>-</SP> is an anion; and n is 0 or 1, and at least one water-soluble polymer having a repeating unit of the formula:- wherein R 1 is H or methyl; R 2 is -OH, -OCOR 3 , -COOR 3 , -CN, -CONH 2 -CONHR 3 , -CONR 3 R 4 , phenyl, -N(CH 3 ) COR 5 , -COOH or p-Mo 3 S-phenyl, wherein M is H or potassium; R 3 and R 4 are each 1-4c alkyl; R 5 is H, methyl or ethyl; and x is a positive integer of 50-100. The dye is preferably present at 1-200 mg per mole of silver halide and the polymer preferably has a molecular weight of 5, 000 to 500, 000 and is present at 0À5g-50g per mole of silver halide. This material has a high sensitivity to reversal and little or no residual colour density due to the dye. The material may also contain known desensitizers.
GB1277171A 1970-05-04 1971-05-03 Direct positive silver halide photographic material Expired GB1308733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3812170A JPS4912654B1 (en) 1970-05-04 1970-05-04

Publications (1)

Publication Number Publication Date
GB1308733A true GB1308733A (en) 1973-03-07

Family

ID=12516617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1277171A Expired GB1308733A (en) 1970-05-04 1971-05-03 Direct positive silver halide photographic material

Country Status (6)

Country Link
JP (1) JPS4912654B1 (en)
BE (1) BE766640A (en)
CA (1) CA968612A (en)
DE (1) DE2121783C3 (en)
FR (1) FR2091169A5 (en)
GB (1) GB1308733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218464A (en) * 1988-05-11 1989-11-15 Kenneth Lawrence Mackenzie Line jamming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218464A (en) * 1988-05-11 1989-11-15 Kenneth Lawrence Mackenzie Line jamming apparatus

Also Published As

Publication number Publication date
BE766640A (en) 1971-10-01
CA968612A (en) 1975-06-03
FR2091169A5 (en) 1972-01-14
DE2121783A1 (en) 1971-11-11
DE2121783B2 (en) 1973-10-25
DE2121783C3 (en) 1974-05-22
JPS4912654B1 (en) 1974-03-26

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee