GB427962A - Improvements in or relating to the production of photographic diazotype prints - Google Patents

Improvements in or relating to the production of photographic diazotype prints

Info

Publication number
GB427962A
GB427962A GB29878/33A GB2987833A GB427962A GB 427962 A GB427962 A GB 427962A GB 29878/33 A GB29878/33 A GB 29878/33A GB 2987833 A GB2987833 A GB 2987833A GB 427962 A GB427962 A GB 427962A
Authority
GB
United Kingdom
Prior art keywords
salt
paper
water
development
coupling
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
GB29878/33A
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.)
S C & P Harding Ltd
Original Assignee
S C & P Harding 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 S C & P Harding Ltd filed Critical S C & P Harding Ltd
Priority to GB29878/33A priority Critical patent/GB427962A/en
Priority to US749925A priority patent/US2209087A/en
Publication of GB427962A publication Critical patent/GB427962A/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
    • G03C1/52—Compositions containing diazo compounds 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/18—Diazo-type processes, e.g. thermal development, or agents therefor

Abstract

427,962. Photographic diazotype processes. LEUCH, W. P., and HARDING, Ltd., S. C. & P., Alliance Works, Denmark Hill, London. Oct. 27, 1933, Nos. 29878 and 33497. [Class 98 (ii)] Papers coated with a light-sensitive layer containing a diazo compound capable of coupling under neutral or acid conditions are dried after coating and a powder containing the coupling component is dusted over the layer. The coating containing the coupling component may also contain a salt of a strong base and a weak acid which is capable of acting as a coupling accelerator. Development of the papers is effected by water which may be applied in the form of steam or water vapour, or in a developing machine in which case the water may contain a salt which prevents running of the lines or a salt acting as a coupling accelerator or both, or as water combined in a hydrated salt which dissociates on heating, development in this case being effected by heating the paper to which the hydrated salt has been applied. In a further method of development, the paper may be pressed onto the surface of a moist gelatinous composition. Diazo compounds suitable for the process are those which contain an acidic substituent in the aryl nucleus such as OH, COOH, C1, Br, NO2, HSO3, or alkyl, aryl or aralkyl ether groups such as OCH3, OC8H2.C6H5 or OC6H5 and diazo compounds of the diphenyl, diphenylmethane and triphenylmethane series. In examples (1) paper is coated with a solution containing the zinc chloride double salt of 5-benzoylamino:1 :4-diethoxy - 2 - diazonium chloride and aluminium sulphate and the dried paper is then dusted with a powder of flour and phloroglucinol. It may be developed by steam, by pressing on moist gelatin, or in a developing machine using a solution of sodium acetate and tartaric acid, and (2) the paper of example (1) is dusted over with a powder consisting of flour, sodium benzoate and phloroglucinol and developed with water in a developing machine. The second Provisional Specification refers to the use of a coupling component appied to the back of the material, development being effected by aqueous alcohol.
GB29878/33A 1933-10-27 1933-10-27 Improvements in or relating to the production of photographic diazotype prints Expired GB427962A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB29878/33A GB427962A (en) 1933-10-27 1933-10-27 Improvements in or relating to the production of photographic diazotype prints
US749925A US2209087A (en) 1933-10-27 1934-10-25 Production of photographic diazotype prints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29878/33A GB427962A (en) 1933-10-27 1933-10-27 Improvements in or relating to the production of photographic diazotype prints

Publications (1)

Publication Number Publication Date
GB427962A true GB427962A (en) 1935-04-29

Family

ID=10298654

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29878/33A Expired GB427962A (en) 1933-10-27 1933-10-27 Improvements in or relating to the production of photographic diazotype prints

Country Status (2)

Country Link
US (1) US2209087A (en)
GB (1) GB427962A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612450A (en) * 1946-01-17 1952-09-30 Polaroid Corp Self-framing photographic film unit containing a liquid, and process for producing framed positive images
DE873041C (en) * 1938-03-23 1953-04-09 Renker Belipa G M B H Process for the semi-dry development of two-component diazotype layers
US2653091A (en) * 1950-01-31 1953-09-22 Rca Corp Photographic diazotype composition and heat development thereof
US2789904A (en) * 1953-09-17 1957-04-23 Gen Aniline & Film Corp Diazo print process
US2971840A (en) * 1955-02-07 1961-02-14 Agfa Ag Process for the production of nonlaterally reversed positive copies by heat development
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof
US3080230A (en) * 1956-02-18 1963-03-05 Agfa Ag Photographic stratum transfer process and element therefor

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609296A (en) * 1945-05-21 1952-09-02 Polaroid Corp Composite photographic product comprising a photosensitive element and a container carrying a liquid for processing said element
US2625494A (en) * 1948-05-05 1953-01-13 Morrison Montford Heat-sensitive recording element
NL82334C (en) * 1951-03-20
US2741558A (en) * 1952-03-11 1956-04-10 Grinten Chem L V D Process for the manufacture of diazotype copies
US2798856A (en) * 1954-03-19 1957-07-09 Baxter Don Inc Steam sterilization indicator
US2798855A (en) * 1954-03-19 1957-07-09 Baxter Don Inc Sterilization indicator
US3248219A (en) * 1960-09-06 1966-04-26 Cons Electrodynamics Corp Photographic element for dry processing
US3976488A (en) * 1969-02-19 1976-08-24 Mita Industrial Company, Ltd. Treating agent for diazo-type multicolor reproduction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873041C (en) * 1938-03-23 1953-04-09 Renker Belipa G M B H Process for the semi-dry development of two-component diazotype layers
US2612450A (en) * 1946-01-17 1952-09-30 Polaroid Corp Self-framing photographic film unit containing a liquid, and process for producing framed positive images
US2653091A (en) * 1950-01-31 1953-09-22 Rca Corp Photographic diazotype composition and heat development thereof
US2789904A (en) * 1953-09-17 1957-04-23 Gen Aniline & Film Corp Diazo print process
US2971840A (en) * 1955-02-07 1961-02-14 Agfa Ag Process for the production of nonlaterally reversed positive copies by heat development
US3080230A (en) * 1956-02-18 1963-03-05 Agfa Ag Photographic stratum transfer process and element therefor
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof

Also Published As

Publication number Publication date
US2209087A (en) 1940-07-23

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