GB944395A - Manufacture of printing plates - Google Patents

Manufacture of printing plates

Info

Publication number
GB944395A
GB944395A GB29880/60A GB2988060A GB944395A GB 944395 A GB944395 A GB 944395A GB 29880/60 A GB29880/60 A GB 29880/60A GB 2988060 A GB2988060 A GB 2988060A GB 944395 A GB944395 A GB 944395A
Authority
GB
United Kingdom
Prior art keywords
toners
image
toner
developed
heat
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
GB29880/60A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB944395A publication Critical patent/GB944395A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture

Abstract

944,395. Electrophotographic development; photomechanical printing plates. KALLE A. G. Aug. 30, 1960 [Sept. 4, 1959], No. 29880/60. Headings G2H and G2M. A printing plate is prepared by developing an exposed and charged photoconductive plate with a dry mixture of positive and negative toners which are in the same range of particle size and which are selectively removable from the developed image by the action of heat or by treatment with water or an acid or alkaline liquid, the two toners adhering respectively to the exposed and unexposed parts of the image, fixing the image, and removing one toner component selectively by the action of water or an acid or alkaline liquid if not already removed by heat during fixing. The support may be of aluminium and the photoconduc- tor also may be removed in those areas where the toner has been removed. Exhaustive lists are given of compounds useful as one or other of the toner components and these include polystyrene, vinyl and acrylic resins, coumarone and ketone resins, metal resinates, natural resins, organic carboxylic and sulphonic acids and their salts and derivatives, aromatic hydroxy compounds, organic amines, imidazoles, triazoles and pyrazoles. Waxes, organic compounds of low melting point (many specified), dyes (including their metal salts) and pigments such as carbon black, zinc oxide,titanium dioxide, barium sulphate and red lead may be included in the particles of one or both toners. The particles of each toner may be formed by fusing together a mixture of ingredients and finely grinding the product. The developed image may be fixed by heat or by the use of solvent vapours. The developed and fixed image may be treated with a lacquer before treatment with the solvent for removing one of the toners, particularly when the two toners are both soluble in alkali but at different rates. In the examples, the developed and fixed image is treated with one of the following aqueous solutions to remove one toner component and make a printing plate; (a) monoethanolamine, polyethylene glycol and sodium silicate or glycerine, (b) polyethylene glycol and ammonia or diethanolamine, (c) phosphoric or acetic acid to which a little gum arabic was added, (d) trisodium phosphate, sodium hexametaphosphate and sodium metasilicate, and (e) dilute sodium hydroxide. Specification 944,394 is referred to.
GB29880/60A 1959-09-04 1960-08-30 Manufacture of printing plates Expired GB944395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK38623A DE1197754B (en) 1959-09-04 1959-09-04 Developer for electrophotographic purposes

Publications (1)

Publication Number Publication Date
GB944395A true GB944395A (en) 1963-12-11

Family

ID=7221448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29880/60A Expired GB944395A (en) 1959-09-04 1960-08-30 Manufacture of printing plates

Country Status (9)

Country Link
US (1) US3236639A (en)
BE (1) BE594397A (en)
CH (1) CH382559A (en)
DE (1) DE1197754B (en)
FR (1) FR1274515A (en)
GB (1) GB944395A (en)
LU (1) LU39099A1 (en)
NL (1) NL255481A (en)
SE (1) SE218046C1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454347A (en) * 1964-05-12 1969-07-08 Heberlein & Co Ag Fabric dyeing by transferring by heating or solubilizing a dye from an electrostatically deposited,heat or solvent fused water soluble dielectric carrier
US3510297A (en) * 1966-05-05 1970-05-05 Ibm Process for producing negative transparencies
US3864125A (en) * 1969-02-10 1975-02-04 Xerox Corp Electrophotographic method of making an imaging master
AU456755B2 (en) * 1970-12-11 1975-01-16 Atlas Chemical Inds Inc. Polyester resins and electrostatic compositions
US3884825A (en) * 1972-08-03 1975-05-20 Xerox Corp Imaging composition
DE2352604B2 (en) * 1972-10-21 1980-09-11 Konishiroku Photo Industry Co., Ltd., Tokio Toner for electrostatographic dry developers
US3844815A (en) * 1972-12-18 1974-10-29 Xerox Corp Foron yellow as a toner colorant
JPS49113838A (en) * 1973-03-05 1974-10-30
BE806408A (en) * 1973-10-23 1974-04-23 Oce Van Der Grinten Nv TONER POWDER FOR DEVELOPING ELECTROSTATIC IMAGES
DE2726263C2 (en) * 1977-06-10 1985-10-10 Hoechst Ag, 6230 Frankfurt Process for the production of printing forms
AU532173B2 (en) * 1979-06-13 1983-09-22 Mitsui Toatsu Chemicals Inc. Electrophotographic toner
JPS598825B2 (en) * 1979-08-22 1984-02-27 富士通株式会社 Flash fixing method
JPS56140356A (en) * 1980-04-03 1981-11-02 Toray Ind Inc Dry toner
US4404270A (en) * 1980-05-22 1983-09-13 Hitachi Chemical Company, Ltd. Positively chargeable powdered electrophotographic toner containing dialkyl tin oxide charge control agent
US4500616A (en) * 1982-09-20 1985-02-19 Konishiroku Photo Industry Co., Ltd. Extraction developing method for electrostatic latent images

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL146059B (en) * 1948-05-01 Keyes Fibre Co PROCEDURE FOR MANUFACTURING INTERCHANGEABLE FILTER UNITS FOR GAS FILTERS AND FILTER UNITS MADE IN ACCORDANCE WITH THIS PROCESS.
US2735785A (en) * 1953-07-30 1956-02-21 Process of electrostatic printing
US2965573A (en) * 1958-05-02 1960-12-20 Haloid Xerox Inc Xerographic developer
CA565006A (en) * 1954-12-23 1958-10-21 The Battelle Development Corporation Tripartite developer for electrostatic images
US2917460A (en) * 1955-06-17 1959-12-15 Ibm Powder compositions useful as electroscopic toners
US3010842A (en) * 1955-08-29 1961-11-28 Xerox Corp Development of electrostatic images
US3013890A (en) * 1958-07-08 1961-12-19 Xerox Corp Process of developing electrostatic images and composition therefor
US3078231A (en) * 1959-05-13 1963-02-19 Commw Of Australia Controlled developer for use in electro-photography and electro-radiography

Also Published As

Publication number Publication date
CH382559A (en) 1964-09-30
BE594397A (en)
NL255481A (en)
SE218046C1 (en) 1968-01-02
FR1274515A (en) 1961-10-27
LU39099A1 (en) 1960-10-24
US3236639A (en) 1966-02-22
DE1197754B (en) 1965-07-29

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