GB1393785A - Lithographic printing process - Google Patents

Lithographic printing process

Info

Publication number
GB1393785A
GB1393785A GB1766872A GB1766872A GB1393785A GB 1393785 A GB1393785 A GB 1393785A GB 1766872 A GB1766872 A GB 1766872A GB 1766872 A GB1766872 A GB 1766872A GB 1393785 A GB1393785 A GB 1393785A
Authority
GB
United Kingdom
Prior art keywords
benzotriazole
solution
april
acetate
printing process
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
GB1766872A
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.)
Apeco Corp
Original Assignee
Apeco Corp
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 Apeco Corp filed Critical Apeco Corp
Publication of GB1393785A publication Critical patent/GB1393785A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/06—Silver salts
    • G03F7/063—Additives or means to improve the lithographic properties; Processing solutions characterised by such additives; Treatment after development or transfer, e.g. finishing, washing; Correction or deletion fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

1393785 Photo-lithography APECO CORP 17 April 1972 [15 April 1971] 17668/72 Headings G2C and G2M A lithographic printing process uses a printing plate produced by exposing a photographic silver halide emulsion layer and developing to form a hydrophilic silver image, in which either (a) the developed layer (which still contains silver halide, i.e. is unfixed) is treated with a benzotriazole, (b) the developer contains a benzotriazole, or (c) the photographic element containing the emulsion layer also contains a benzotriazole; in each case the benzotriazole is unsubstituted in the 1-position and substituted in at least one of the 4, 5, 6 and 7-positions and converts the undeveloped areas of the emulsion to an oleophilic inkreceptive state. Specified benzotriazoles are 5-Me; 5, 6-di-Me; 4, 5-di-Cl; 5-NO 2 ; 4-NH 2 ; 6-NMe 2 ; and 6-OH. In the Examples the treatment solution used in embodiment (a) is an aqueous solution of Na acetate, Cr acetate, the triazole, methanol, NaOH and colloidal gold; the solution may be mixed with a developer solution for use in embodiment (b).
GB1766872A 1971-04-15 1972-04-17 Lithographic printing process Expired GB1393785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13439971A 1971-04-15 1971-04-15

Publications (1)

Publication Number Publication Date
GB1393785A true GB1393785A (en) 1975-05-14

Family

ID=22463199

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1766872A Expired GB1393785A (en) 1971-04-15 1972-04-17 Lithographic printing process

Country Status (6)

Country Link
US (1) US3764323A (en)
CA (1) CA964514A (en)
DE (1) DE2218054A1 (en)
FR (1) FR2136447A5 (en)
GB (1) GB1393785A (en)
IT (1) IT957189B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1488356A (en) * 1974-02-26 1977-10-12 Agfa Gevaert Manufacture of a planographic printing plate
JPS5839495A (en) * 1981-09-02 1983-03-08 Mitsubishi Paper Mills Ltd Lithographic plate
DE3242104C1 (en) * 1982-11-13 1985-08-14 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Use of an additive for corrosion protection of printing cylinder surfaces
JPH02156242A (en) * 1988-12-08 1990-06-15 Mitsubishi Paper Mills Ltd Engraving method for planographic printing plate

Also Published As

Publication number Publication date
IT957189B (en) 1973-10-10
DE2218054A1 (en) 1973-10-31
FR2136447A5 (en) 1972-12-22
US3764323A (en) 1973-10-09
CA964514A (en) 1975-03-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees