GB1469871A - Spectrally sensitized silver halide photographic emulsions - Google Patents

Spectrally sensitized silver halide photographic emulsions

Info

Publication number
GB1469871A
GB1469871A GB2869874A GB2869874A GB1469871A GB 1469871 A GB1469871 A GB 1469871A GB 2869874 A GB2869874 A GB 2869874A GB 2869874 A GB2869874 A GB 2869874A GB 1469871 A GB1469871 A GB 1469871A
Authority
GB
United Kingdom
Prior art keywords
alkyl group
group
optionally substituted
hydrogen atom
silver halide
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
GB2869874A
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 GB1469871A publication Critical patent/GB1469871A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/08—Sensitivity-increasing substances
    • G03C1/28—Sensitivity-increasing substances together with supersensitising substances
    • G03C1/29—Sensitivity-increasing substances together with supersensitising substances the supersensitising mixture being solely composed of dyes ; Combination of dyes, even if the supersensitising effect is not explicitly disclosed

Abstract

1469871 Supersensitized silver halide emulsions FUJI PHOTO FILM CO Ltd 28 June 1974 [28 June 1973] 28698/74 Heading G2C A silver halide photographic emulsion contains a supersensitizing amount of (1) at least one spectrally sensitizing dye represented by the general Formula I wherein Z represents a halogen or an alkyl, phenyl, cyano or trifluoromethyl group; R<SP>0</SP>, R<SP>1</SP> and R<SP>2</SP> each represent an optionally substituted alkyl group provided that at least one of R<SP>1</SP> and R<SP>2</SP> represents an alkyl group containing a carboxyl or sulpho group; Y<SP>1</SP> represents a hydrogen atom or an alkyl group; Y<SP>2</SP> represents a hydrogen atom or a cyano, trifluoromethyl, carboxyl, alkoxy carbonyl or acetyl group, provided that when Y<SP>1</SP> represents an alkyl group Y<SP>2</SP> is not a hydrogen atom; X represents an acid anion; n is zero or one; p is 1 to 4; and (2) at least one apomerocyanine and/or dimethine merocyanine dye. Suitable merocyanine dyes are of the Formula II: wherein Z<SP>1</SP> represents the atoms necessary to complete an optionally substituted 5- or 6- membered heterocyclic ring; Q represents the atoms necessary to complete an optionally substituted rhodamine or thiohydantion ring; R<SP>3</SP> represents an optionally substituted alkyl group and R<SP>4</SP> represents a hydrogen atom, an alkyl group, an alkoxyl group or a phenyl group. In addition the emulsion may include a red-light-sensitive spectrally sensitizing dye.
GB2869874A 1973-06-28 1974-06-28 Spectrally sensitized silver halide photographic emulsions Expired GB1469871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7302473A JPS5023220A (en) 1973-06-28 1973-06-28

Publications (1)

Publication Number Publication Date
GB1469871A true GB1469871A (en) 1977-04-06

Family

ID=13506346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2869874A Expired GB1469871A (en) 1973-06-28 1974-06-28 Spectrally sensitized silver halide photographic emulsions

Country Status (3)

Country Link
JP (1) JPS5023220A (en)
DE (1) DE2431238A1 (en)
GB (1) GB1469871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294193A2 (en) * 1987-06-05 1988-12-07 Konica Corporation Apparatus for forming color image, and light-sensitive silver halide color photographic material suited for optical scanning exposure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5384341A (en) * 1976-12-29 1978-07-25 Matsushita Electric Ind Co Ltd Air conditioning system
JPS5384342A (en) * 1976-12-29 1978-07-25 Matsushita Electric Ind Co Ltd Unit air conditioning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294193A2 (en) * 1987-06-05 1988-12-07 Konica Corporation Apparatus for forming color image, and light-sensitive silver halide color photographic material suited for optical scanning exposure
EP0294193A3 (en) * 1987-06-05 1989-02-15 Konica Corporation Apparatus for forming color image, and light-sensitive silver halide color photographic material suited for optical scanning exposure

Also Published As

Publication number Publication date
DE2431238A1 (en) 1975-01-16
JPS5023220A (en) 1975-03-12

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Legal Events

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