GB1343719A - Sensitized silver halide photographic emulsions - Google Patents

Sensitized silver halide photographic emulsions

Info

Publication number
GB1343719A
GB1343719A GB5464271A GB5464271A GB1343719A GB 1343719 A GB1343719 A GB 1343719A GB 5464271 A GB5464271 A GB 5464271A GB 5464271 A GB5464271 A GB 5464271A GB 1343719 A GB1343719 A GB 1343719A
Authority
GB
United Kingdom
Prior art keywords
nucleus
completes
alkyl
benzimidazole
sensitizing dye
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
GB5464271A
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 GB1343719A publication Critical patent/GB1343719A/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
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • C09B23/102—The polymethine chain containing an even number of >CH- groups two heterocyclic rings linked carbon-to-carbon
    • 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
    • C09B23/10—The polymethine chain containing an even number of >CH- groups
    • 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
    • G03C1/10—Organic substances
    • G03C1/12—Methine and polymethine dyes
    • G03C1/22—Methine and polymethine dyes with an even number of CH groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1343719 Photographic emulsions FUJI PHOTO FILM CO Ltd 24 Nov 1971 [25 Nov. 1970] 54642/71 Heading G2C Photographic silver halide emulsions contain (a) at least one green-sensitizing dye and/or (b) at least one red-sensitizing dye, and (c) at least one blue sensitizing dye which is an apomerocyanine dye which produces a sensitization maximum in the range 430-530 mÁ. Preferably (c) is of formula I and (a) and (b) are of formulae II and III. (in which Z<SP>1</SP> completes a heterocyclic nucleus having 5 or 6 atoms in the ring containing the N atom shown; Z<SP>2</SP> is O or S; R<SP>1</SP> is aryl or optionally substituted alkyl; R<SP>2</SP> is H, aryl or optionally substituted alkyl; n is O or I; Z<SP>3</SP> completes a benzothiazole, naphthothiazole, benzoselenazole, naphthoselenazole or 2-quinoline nucleus; A is H 1-8C alkyl, alkoxy or OH; Z<SP>4</SP> and Z<SP>5</SP> each complete a benzimidazole, benzoxazole, naphthoxazole, benzothiazole, naphthothiazole, benzoselenazole or naphthoselenazole nucleus or Z<SP>4</SP> completes an indolenine nucleus and Z<SP>5</SP> completes a benzimidazole nucleus; R<SP>3-</SP><SP>6</SP> are each 1-8C alkyl or substituted alkyl; R<SP>7</SP> is 1-8C alkyl or aralkyl, but is H when at least one of Z<SP>4</SP> and Z<SP>5</SP> completes a benzimidazole nucleus; each L is methin or together with R<SP>4-6</SP> represents a polymethylene group; p and q are each O or I; X is anion). Preferably dyes (a) and (b) are a supersensitizing combination. The emulsions have a similar gamma for red, blue and green light.
GB5464271A 1970-11-25 1971-11-24 Sensitized silver halide photographic emulsions Expired GB1343719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10395570A JPS4842968B1 (en) 1970-11-25 1970-11-25

Publications (1)

Publication Number Publication Date
GB1343719A true GB1343719A (en) 1974-01-16

Family

ID=14367815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5464271A Expired GB1343719A (en) 1970-11-25 1971-11-24 Sensitized silver halide photographic emulsions

Country Status (6)

Country Link
JP (1) JPS4842968B1 (en)
BE (1) BE775796A (en)
CA (1) CA995961A (en)
DE (1) DE2158553A1 (en)
FR (1) FR2115981A5 (en)
GB (1) GB1343719A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303934A (en) * 1995-07-31 1997-03-05 Agfa Gevaert Ag Variable gradation black and white paper
GB2316754A (en) * 1996-08-30 1998-03-04 Ilford Ltd Variable contrast photographic material
DE19960108A1 (en) * 1999-12-14 2001-07-12 Agfa Gevaert Ag Black-and-white photographic paper with silver halide emulsion for alternating analog and digital laser exposures is sensitized over the 430-525 nm range, especially by blue and green sensitizers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE588862A (en) * 1959-03-23
BE598522A (en) * 1959-12-24
JPS4838408A (en) * 1971-09-17 1973-06-06

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2303934A (en) * 1995-07-31 1997-03-05 Agfa Gevaert Ag Variable gradation black and white paper
US5665532A (en) * 1995-07-31 1997-09-09 Agfa-Gevaert Ag Black and white paper with variable gradation
GB2303934B (en) * 1995-07-31 1998-10-28 Agfa Gevaert Ag Black and white paper with variable gradation
GB2316754A (en) * 1996-08-30 1998-03-04 Ilford Ltd Variable contrast photographic material
GB2316754B (en) * 1996-08-30 2000-09-27 Ilford Ltd Variable contrast photographic material
DE19960108A1 (en) * 1999-12-14 2001-07-12 Agfa Gevaert Ag Black-and-white photographic paper with silver halide emulsion for alternating analog and digital laser exposures is sensitized over the 430-525 nm range, especially by blue and green sensitizers

Also Published As

Publication number Publication date
JPS4842968B1 (en) 1973-12-15
FR2115981A5 (en) 1972-07-07
DE2158553A1 (en) 1972-05-31
CA995961A (en) 1976-08-31
BE775796A (en) 1972-03-16

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Legal Events

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