GB1236422A - Method of rendering photochromic images permanent - Google Patents

Method of rendering photochromic images permanent

Info

Publication number
GB1236422A
GB1236422A GB32491/70A GB3249170A GB1236422A GB 1236422 A GB1236422 A GB 1236422A GB 32491/70 A GB32491/70 A GB 32491/70A GB 3249170 A GB3249170 A GB 3249170A GB 1236422 A GB1236422 A GB 1236422A
Authority
GB
United Kingdom
Prior art keywords
photochromic
image
materials
images
feb
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
GB32491/70A
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP3507567A external-priority patent/JPS5323699B1/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB1236422A publication Critical patent/GB1236422A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/494Silver salt compositions other than silver halide emulsions; Photothermographic systems ; Thermographic systems using noble metal compounds
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/72Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29Development processes or agents therefor
    • G03C5/305Additives other than developers
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/02Photosensitive materials characterised by the image-forming section
    • G03C8/04Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of inorganic or organo-metallic compounds derived from photosensitive noble metals
    • G03C8/06Silver salt diffusion transfer

Abstract

1,236,422. Photochromic materials and uses thereof. CANON K.K. 15 Feb., 1968 [20 Feb., 1967; 31 May, 1967; 19 June, 1967; 2 Aug., 1967; 16 Aug., 1967], No. 32491/70. Divided out of 1,236,421. Heading C4S. Stable photochromic images (i.e. images which are not removed by exposure to actinic radiation) are produced by image-wise exposing a photochromic material to produce a temporary image and then treating the image with an alkaline material. Specified alkaline materials are sodium and potassium hydroxide, ammonia, alkylamines, potassium and sodium cyanide and Br÷nsted bases. The stable image can be converted to a temporary image by treatment with an acid such as acetic, benzoic, hydrochloric, nitric or a Lewis acid. Specified photochromic materials are spiropyrans, anils and semicarbazones optionally with p-nitrophenol or the materials set out in Specification 1,236,421.
GB32491/70A 1967-02-20 1968-02-15 Method of rendering photochromic images permanent Expired GB1236422A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1107067 1967-02-20
JP3507567A JPS5323699B1 (en) 1967-05-31 1967-05-31
JP3920367 1967-06-19
JP4928067 1967-08-02
JP5285967 1967-08-16
US67121867A 1967-09-28 1967-09-28

Publications (1)

Publication Number Publication Date
GB1236422A true GB1236422A (en) 1971-06-23

Family

ID=27548311

Family Applications (5)

Application Number Title Priority Date Filing Date
GB32492/70A Expired GB1236423A (en) 1967-02-20 1968-02-15 Colour image recording member
GB7525/68A Expired GB1236421A (en) 1967-02-20 1968-02-15 Photochromic recording member
GB32491/70A Expired GB1236422A (en) 1967-02-20 1968-02-15 Method of rendering photochromic images permanent
GB32493/70A Expired GB1236424A (en) 1967-02-20 1968-02-15 Photochromic projection system
GB45959/68A Expired GB1183907A (en) 1967-02-20 1968-09-27 Photographic Silver Materials and Processes

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB32492/70A Expired GB1236423A (en) 1967-02-20 1968-02-15 Colour image recording member
GB7525/68A Expired GB1236421A (en) 1967-02-20 1968-02-15 Photochromic recording member

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB32493/70A Expired GB1236424A (en) 1967-02-20 1968-02-15 Photochromic projection system
GB45959/68A Expired GB1183907A (en) 1967-02-20 1968-09-27 Photographic Silver Materials and Processes

Country Status (5)

Country Link
US (1) US3563740A (en)
BE (1) BE721563A (en)
DE (5) DE1622263A1 (en)
FR (1) FR1602526A (en)
GB (5) GB1236423A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9610769D0 (en) * 1996-05-23 1996-07-31 Sls Wales Ltd Image production
ATE251316T1 (en) * 1999-07-08 2003-10-15 Kromotek Ltd DRY PROCESS FOR PRODUCING PHOTOGRAPHIC PRINTS
US7570423B2 (en) 2007-01-25 2009-08-04 Hewlett-Packard Development Company, L.P. Projection screen
DE102008049848A1 (en) * 2008-10-01 2010-04-08 Tesa Se Multigrade indicator
CN108689978B (en) * 2018-05-14 2021-11-12 南京信息工程大学 2-imino-3- (4-nitrophenyl) -6- [2- (4-nitrophenyl) azo ] benzopyran

Also Published As

Publication number Publication date
DE1797588A1 (en) 1974-01-10
GB1236424A (en) 1971-06-23
BE721563A (en) 1969-03-03
DE1797590A1 (en) 1973-11-08
US3563740A (en) 1971-02-16
DE1622263A1 (en) 1970-12-03
GB1236423A (en) 1971-06-23
GB1183907A (en) 1970-03-11
GB1236421A (en) 1971-06-23
DE1797388A1 (en) 1970-12-23
DE1797589A1 (en) 1973-11-08
FR1602526A (en) 1970-12-21

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