GB443955A - Improvements in and relating to diazo-type printing processes - Google Patents

Improvements in and relating to diazo-type printing processes

Info

Publication number
GB443955A
GB443955A GB2310034A GB2310034A GB443955A GB 443955 A GB443955 A GB 443955A GB 2310034 A GB2310034 A GB 2310034A GB 2310034 A GB2310034 A GB 2310034A GB 443955 A GB443955 A GB 443955A
Authority
GB
United Kingdom
Prior art keywords
acid
diazo
paper
powdered
magnesium oxide
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
GB2310034A
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.)
Halden & Co Ltd J
Original Assignee
Halden & Co Ltd J
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 Halden & Co Ltd J filed Critical Halden & Co Ltd J
Priority to GB2310034A priority Critical patent/GB443955A/en
Publication of GB443955A publication Critical patent/GB443955A/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
    • G03C1/52Compositions containing diazo compounds as photosensitive substances
    • G03C1/61Compositions containing diazo compounds as photosensitive substances with non-macromolecular additives

Abstract

443,955. Photographic diazotype processes. HALDEN & CO., Ltd., J., and HOLDEN, J., Rowsley Works, Reddish, near Stockport. Aug. 10, 1934, No. 23100. [Class 98 (ii)] The papers are coated with a light-sensitive layer of a diazo-compound capable of quick coupling, with or without the addition of a coupling agent or azo dye component, and the coated surface, after drying, is dusted with a finely powdered agent which is a metal oxide or salt, insoluble or slightly soluble in water, of a mildly alkaline or neutral nature, and capable of reaction with the acids normally present in the layer for stabilizing purposes or with the acid radicle of the diazo-compound. Suitable agents are magnesium oxide or carbonate, calcium carbonate and zinc carbonate. As coupling components, naphthol sulphonic and disulphonic acids, aminonaphthol sulphonic acids, polyhydroxy compounds, e.g. phloroglucin and arylides of 2.3 oxynaphthoic acid, and pyrazolone derivatives may be used. The support may be treated before sensitizing with a waterproofing agent, e.g. in the manner described in Specifications 418,976 and 425,030. Oil proofing as described in Specification 424,976 may also be used. Insecticides and antiseptics, e.g. chloronaphthalene derivatives, dyes, or dye forming bodies, e.g. leuco indigoid esters, or translucing agents as described in Specification 425,215, [Group VIII], may be included. In examples : (1) paper coated with the diazo chloride of 4-( 1<1>- methyl)-phenoxy acetamino-2: 5 dimethoxy-1-aminobenzene and phosphoric acid is dried and powdered with a mixture of 1 : 5-naphthol sulphonic acid, magnesium oxide, and French chalk. After exposure, the paper is developed by applying a moistened roller or cloth ; (2) paper sensitized as in example 1 is powdered with a mixture of p-phenetedide of 2.3-oxynaphthoic acid, magnesium oxide,. and French chalk; (3) Paper as in example 1 is waterproofed before powdering, with paraffin wax, and powdered with a mixture of magnesium oxide, French chalk, phloroglucinol and sulphated lauryl alcohol ; and (4) paper is coated with a solution of diazo sulphate of p-amino-diphenylamine, tartaric acid, naphthalene-1 : 3 : 6-trisulphonic acid, phloroglucinol, and dextrine. After drying, it is powdered with a mixture of magnesium oxide and French chalk.
GB2310034A 1934-08-10 1934-08-10 Improvements in and relating to diazo-type printing processes Expired GB443955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2310034A GB443955A (en) 1934-08-10 1934-08-10 Improvements in and relating to diazo-type printing processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2310034A GB443955A (en) 1934-08-10 1934-08-10 Improvements in and relating to diazo-type printing processes

Publications (1)

Publication Number Publication Date
GB443955A true GB443955A (en) 1936-03-10

Family

ID=10190109

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2310034A Expired GB443955A (en) 1934-08-10 1934-08-10 Improvements in and relating to diazo-type printing processes

Country Status (1)

Country Link
GB (1) GB443955A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757727C (en) * 1939-04-11 1944-10-26 Philips Patentverwaltung Process for the production of photosensitive layers which contain diazonium compounds
US2501874A (en) * 1946-06-12 1950-03-28 Gen Aniline & Film Corp Photographic diazo-sensitized glassine paper
US2694010A (en) * 1951-11-20 1954-11-09 Gen Aniline & Film Corp Light-sensitive diazotype layers containing magnesium salts
US2732299A (en) * 1952-07-22 1956-01-24 Light sensitive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757727C (en) * 1939-04-11 1944-10-26 Philips Patentverwaltung Process for the production of photosensitive layers which contain diazonium compounds
US2501874A (en) * 1946-06-12 1950-03-28 Gen Aniline & Film Corp Photographic diazo-sensitized glassine paper
US2694010A (en) * 1951-11-20 1954-11-09 Gen Aniline & Film Corp Light-sensitive diazotype layers containing magnesium salts
US2732299A (en) * 1952-07-22 1956-01-24 Light sensitive

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