GB1308925A - Process for producing positive images - Google Patents

Process for producing positive images

Info

Publication number
GB1308925A
GB1308925A GB5585770A GB5585770A GB1308925A GB 1308925 A GB1308925 A GB 1308925A GB 5585770 A GB5585770 A GB 5585770A GB 5585770 A GB5585770 A GB 5585770A GB 1308925 A GB1308925 A GB 1308925A
Authority
GB
United Kingdom
Prior art keywords
positive images
diphenyl
nov
phototropic
wavelength range
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
GB5585770A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1308925A publication Critical patent/GB1308925A/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
    • G03C1/72—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
    • 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
    • G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
    • 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
    • G03C1/732—Leuco dyes

Abstract

1308925 Photochromism E I DU PONT DE NEMOURS & CO 24 Nov 1970 [26 Nov 1969 17 Aug 1970] 55857/70 Heading C4S [Also in Division G2] A phototropic composition used for the preparation of photographic positive images by simultaneous imagewise exposure to a first wavelength range and uniform exposure to a second wavelength range (see Divisions G2-G3) comprises a phototropic spiropyran or 2,3-diphenyl indenone oxide in a resin binder. The composition may be coated on a substrate. In Examples 12 and 13, paper coated with a mixture of acetone, cellulose acetate butyrate, N- ethyl-p-toluenesulphonamide and either 1<SP>1</SP>,3<SP>1</SP>,3<SP>1</SP>- trimethyl - 6 - nitrospiro(2H - 1 - benzopyran- 2,2<SP>1</SP>-indoline) or 2,3-diphenyl-1-indenone oxide is used.
GB5585770A 1969-11-26 1970-11-24 Process for producing positive images Expired GB1308925A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88030169A 1969-11-26 1969-11-26
US6422070A 1970-08-17 1970-08-17

Publications (1)

Publication Number Publication Date
GB1308925A true GB1308925A (en) 1973-03-07

Family

ID=26744283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5585770A Expired GB1308925A (en) 1969-11-26 1970-11-24 Process for producing positive images

Country Status (3)

Country Link
JP (1) JPS4927701B1 (en)
CA (1) CA941663A (en)
GB (1) GB1308925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212296A (en) * 1987-11-11 1989-07-19 Fuji Photo Film Co Ltd Method for forming a color image and apparatus therefor
EP2996521B1 (en) 2013-05-17 2018-05-02 Koninklijke Douwe Egberts B.V. A beverage preparation system, a capsule and a method for forming a beverage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53136232A (en) * 1977-04-30 1978-11-28 Kubota Ltd Fluid pressure driving device
JPS5683428U (en) * 1979-11-28 1981-07-06
JPS575326U (en) * 1980-06-11 1982-01-12
JPS6097668U (en) * 1983-12-12 1985-07-03 株式会社豊田自動織機製作所 Neutral position holding mechanism in skid steering device
JPH0536163U (en) * 1991-10-18 1993-05-18 株式会社 神崎高級工機製作所 Neutral return device for hydraulic transmission for vehicle speed control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212296A (en) * 1987-11-11 1989-07-19 Fuji Photo Film Co Ltd Method for forming a color image and apparatus therefor
US4904573A (en) * 1987-11-11 1990-02-27 Fuji Photo Film Co., Ltd. Method for forming a color image and image forming apparatus therefor
GB2212296B (en) * 1987-11-11 1992-02-12 Fuji Photo Film Co Ltd Method for forming a color image and image forming apparatus therefor
EP2996521B1 (en) 2013-05-17 2018-05-02 Koninklijke Douwe Egberts B.V. A beverage preparation system, a capsule and a method for forming a beverage

Also Published As

Publication number Publication date
DE2058025A1 (en) 1971-06-03
JPS4927701B1 (en) 1974-07-19
CA941663A (en) 1974-02-12

Similar Documents

Publication Publication Date Title
US2305693A (en) Process of making photographs
GB1308925A (en) Process for producing positive images
JPS5245327A (en) Photographic light sensitive material
GB1471778A (en) Proces for making silver halide films with wide exposure latitude and low gradient
GB1073999A (en) Process for forming stable images in photochromic material
GB1031824A (en) Method of producing a vesicular image
GB1211302A (en) Barium sulphate reflectance standards
GB1190947A (en) Complex Film for Obtaining Screens for Silk Screen Printing
GB772779A (en) Improvements in or relating to indicator slips with blushed lacquer coating
GB1159394A (en) Improvements in or relating to Electrolytic Recording
GB1322662A (en) Coating colloid layers
JPS5254429A (en) Silver halide photographic emulsion
US2362826A (en) Process of producing dropout half-tone negatives
GB537696A (en) Improvements in and relating to colour-forming development and colour photographic elements
JPS5249020A (en) Silver halide photographic emulsion
JPS5233521A (en) Silver halide potographic emulsion
GB893314A (en) Production of colour prints
JPS52104916A (en) Silver halogenide photoemulsifier
JPS52104917A (en) Silver halogenide photoemulsifier
GB1397905A (en) Light-sensitive silver halide photographic material
JPS55159437A (en) Photosensitive composition
GB1314921A (en) Process and compositions
FR1597935A (en)
GB1297320A (en)
JPS539122A (en) Color photographic light sensitive material

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years