GB1345331A - Photographic process using a subsequent heat transfer step - Google Patents

Photographic process using a subsequent heat transfer step

Info

Publication number
GB1345331A
GB1345331A GB1699870A GB1345331DA GB1345331A GB 1345331 A GB1345331 A GB 1345331A GB 1699870 A GB1699870 A GB 1699870A GB 1345331D A GB1345331D A GB 1345331DA GB 1345331 A GB1345331 A GB 1345331A
Authority
GB
United Kingdom
Prior art keywords
compound
reducing
naphthol
imidazole
phenol
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
GB1699870A
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 NV
Agfa Gevaert AG
Original Assignee
Agfa Gevaert NV
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 NV, Agfa Gevaert AG filed Critical Agfa Gevaert NV
Publication of GB1345331A publication Critical patent/GB1345331A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/56—Processes using photosensitive compositions covered by the groups G03C1/64 - G03C1/72 or agents therefor
    • 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
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

1345331 Photographic materials and processes AGFA-GEVAERT 19 April 1971 [9 April 1970] 16998/70 Heading G2C A method of producing positive coloured images comprises (i) imagewise exposing to visible or ultraviolet light a material comprising a supported or self-supporting layer containing a bis-imidazole of formula wherein R 1 , R 2 and R 3 are carbocyclic or heterocyclic groups and each dotted circle represents 4-delocalized electrons and a reducing compound which on reaction with exposed bisimidazole ceases to be reducing, the compound being (a) an aromatic polyhydroxy compound or an alkoxy-phenol or -naphthol, (b) an aromatic polyamino or hydroxylamino compound or N- alkyl substituted derivative therof or (c) a compound of formula where X is 0, S, -NH-, CH 2 -, -CH = CH- or -CO- and Z 1 and Z 2 complete benzene rings and (ii) transferring by heat the unreacted reducing compound to a separate layer either in the material or of a receiving sheet, the layer containing a substance which reacts with the transferred compound. The invention also relates to a photo-sensitive material comprising a supported or self-supporting layer a bis-imidazole of the formula above and a reducing compound which is either (a) an aromatic polyhydroxy compound or an alkoxy-phenol or -naphthol or (b) an amino-phenol or naphthol in which the amino and hydroxy groups are ortho or para to each other. In the examples, a support is coated with a layer containing a binder, a bi-imidazole and reducing agent and optionally a cyanine dye, imagewise to ultraviolet (or visible light if cyanine dye is present), placed in contact with a receptor sheet coated with a compound which reacts with the reducing agent and heated to produce a coloured image. Specified reducing agent/reactant are (1) 4-methoxy naphthol; 2, 5-(di-t-butyl) hydroquinone, phenothiazine or phenoxazine with silver behenate or mercurie stearate (ii) p-phenylene diamine with pyridinium salts and (iii) p-phenylene diamine with hydroxynaphthamides, benzoylacetamilide or p-nitrophenyl methyl sulphide; these materials require uniform exposure to light after the last transfer to produce a visible image. Reference has been directed by the Comptroller to Specification 1271177.
GB1699870A 1970-04-09 1971-04-19 Photographic process using a subsequent heat transfer step Expired GB1345331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1699870 1970-04-09

Publications (1)

Publication Number Publication Date
GB1345331A true GB1345331A (en) 1974-01-30

Family

ID=10087395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1699870A Expired GB1345331A (en) 1970-04-09 1971-04-19 Photographic process using a subsequent heat transfer step

Country Status (6)

Country Link
US (1) US3734733A (en)
BE (1) BE765538A (en)
CA (1) CA972609A (en)
DE (1) DE2117054A1 (en)
FR (1) FR2089284A5 (en)
GB (1) GB1345331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824822A (en) * 1984-07-24 1989-04-25 Sharp Kabushiki Kaisha Thermosensitive recording material

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5442249B2 (en) * 1973-02-06 1979-12-13
US4081278A (en) * 1977-05-23 1978-03-28 Eastman Kodak Company Heat sensitive dye layers comprising a benzopinacol
CA1116003A (en) * 1977-09-19 1982-01-12 Steven R. Levinson Heat sensitive materials including a hexaarylbiimidazole dimer and an antihalation or filter dye
DE2758209C3 (en) * 1977-12-27 1980-07-10 Du Pont De Nemours (Deutschland) Gmbh, 4000 Duesseldorf Photosensitive recording material
US4252887A (en) * 1979-08-14 1981-02-24 E. I. Du Pont De Nemours And Company Dimers derived from unsymmetrical 2,4,5-triphenylimidazole compounds as photoinitiators
US4281058A (en) * 1979-09-10 1981-07-28 Energy Conversion Devices, Inc. Tellurium imaging composition
US4340662A (en) * 1979-09-10 1982-07-20 Energy Conversion Devices, Inc. Tellurium imaging composition
US4451556A (en) * 1982-06-28 1984-05-29 Energy Conversion Devices, Inc. Tellurium imaging composition including base
US4446224A (en) * 1982-06-28 1984-05-01 Energy Conversion Devices, Inc. Tellurium imaging composition including alcohol
US4448877A (en) * 1982-06-28 1984-05-15 Energy Conversion Devices, Inc. Tellurium imaging composition including water
US4535055A (en) * 1982-07-26 1985-08-13 Energy Conversion Devices, Inc. Self-fixing imaging film containing reductant precursor
US5705323A (en) * 1995-10-31 1998-01-06 Eastman Kodak Company Heat bleachable antihalation composition, elements containing same and method of use
US5652091A (en) * 1995-10-31 1997-07-29 Eastman Kodak Company Heat bleachable elements having polymeric acid layer adjacent heat bleachable antihalation layer
US5672562A (en) * 1996-05-08 1997-09-30 Eastman Kodak Company Thermal recording element
US20050053864A1 (en) * 2003-09-05 2005-03-10 Rolf Dessauer Phthalocyanine precursors in infrared sensitive compositions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4824822A (en) * 1984-07-24 1989-04-25 Sharp Kabushiki Kaisha Thermosensitive recording material

Also Published As

Publication number Publication date
CA972609A (en) 1975-08-12
BE765538A (en) 1971-10-08
FR2089284A5 (en) 1972-01-07
US3734733A (en) 1973-05-22
DE2117054A1 (en) 1971-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees