GB1378551A - Spectrally sensitized direct positive emulsion - Google Patents

Spectrally sensitized direct positive emulsion

Info

Publication number
GB1378551A
GB1378551A GB3272972A GB3272972A GB1378551A GB 1378551 A GB1378551 A GB 1378551A GB 3272972 A GB3272972 A GB 3272972A GB 3272972 A GB3272972 A GB 3272972A GB 1378551 A GB1378551 A GB 1378551A
Authority
GB
United Kingdom
Prior art keywords
spectrally sensitized
direct positive
substituted
july
saturated
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
GB3272972A
Other languages
English (en)
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of GB1378551A publication Critical patent/GB1378551A/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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Plural Heterocyclic Compounds (AREA)
GB3272972A 1971-07-14 1972-07-13 Spectrally sensitized direct positive emulsion Expired GB1378551A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2135153A DE2135153A1 (de) 1971-07-14 1971-07-14 Spektral sensibilisierte direktpositiv-emulsion

Publications (1)

Publication Number Publication Date
GB1378551A true GB1378551A (en) 1974-12-27

Family

ID=5813644

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3272972A Expired GB1378551A (en) 1971-07-14 1972-07-13 Spectrally sensitized direct positive emulsion

Country Status (5)

Country Link
US (1) US3816141A (fr)
BE (1) BE785309A (fr)
DE (1) DE2135153A1 (fr)
FR (1) FR2145682B1 (fr)
GB (1) GB1378551A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515955A (en) * 1982-03-08 1985-05-07 Minnesota Mining And Manufacturing Company Isoindoline cationic dyes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE758899A (fr) * 1969-11-14 1971-04-16 Fuji Photo Film Co Ltd Emulsion photographique positive directe a l'halogenure d'argent
US3687675A (en) * 1971-05-03 1972-08-29 Eastman Kodak Co Photographic silver halide emulsions containing a cyanine dye containing at least one 1-cyanoalkyl-2-arylin-dole nucleus

Also Published As

Publication number Publication date
US3816141A (en) 1974-06-11
FR2145682B1 (fr) 1976-10-29
DE2135153A1 (de) 1973-01-25
BE785309A (fr) 1972-12-27
FR2145682A1 (fr) 1973-02-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees