GB831998A - Improvements in or relating to methods of making composite sheets suitable for use as lithographic printing masters - Google Patents

Improvements in or relating to methods of making composite sheets suitable for use as lithographic printing masters

Info

Publication number
GB831998A
GB831998A GB10684/57A GB1068457A GB831998A GB 831998 A GB831998 A GB 831998A GB 10684/57 A GB10684/57 A GB 10684/57A GB 1068457 A GB1068457 A GB 1068457A GB 831998 A GB831998 A GB 831998A
Authority
GB
United Kingdom
Prior art keywords
strips
sheet
composite
bath
metal
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
GB10684/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB831998A publication Critical patent/GB831998A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/03—Chemical or electrical pretreatment
    • B41N3/034—Chemical or electrical pretreatment characterised by the electrochemical treatment of the aluminum support, e.g. anodisation, electro-graining; Sealing of the anodised layer; Treatment of the anodic layer with inorganic compounds; Colouring of the anodic layer
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

831,998. Printing surfaces. RITZERFELD, W., and RITZERFELD G. April 2. 1957 [April 28, 1956], No. 10684/57. Class 100(2) [Also in Group XXXVI] A method of making a composite sheet suitable for use as a lithographic printing plate comprises electrolytically roughening the metal foils of two composite strips 7 of material, each strip comprising paper joined to a metal foil by a water resisting adhesive the composite strips being drawn through a common electrolytic bath and connected to a source of current in such a manner that the metal foils act as the electrodes of the bath. The outer surface of the paper is provided with a water repellant protection lacquer, and thickness of the composite strips is not greater than 0.1 millimetre, the metal foil being preferebaly aluminium or aluminum foil. The strips are drawm from rolls 6 over rollers 8, 9, the latter being connected to an alternating current source 34. The strips are guided by rollers 10 through a bath 23 of an inorganic acid electrolyte, e.g. hydrodhloric acid. The electrolyte may be continuously regenerated and replenished from a storage container 24 by a pump 25. After passing through after-treatment baths 30, 31, the strips are passed betweenrollers 21, 22 for pressing upturned oxide particles back into the metal foil surface, dried and cut into sheet by cutters 33. A cut sheet may be imaged by placing it on a base sheet coated with a fatty wax layer so that the wax layer lies against the electrolytically roughened metal layer. The assembly may then be inserted in a typewriter with the coated base sheet against the platen and the cut sheet is struck by the type.
GB10684/57A 1956-04-28 1957-04-02 Improvements in or relating to methods of making composite sheets suitable for use as lithographic printing masters Expired GB831998A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC018792 1956-04-28

Publications (1)

Publication Number Publication Date
GB831998A true GB831998A (en) 1960-04-06

Family

ID=7428299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10684/57A Expired GB831998A (en) 1956-04-28 1957-04-02 Improvements in or relating to methods of making composite sheets suitable for use as lithographic printing masters

Country Status (3)

Country Link
BE (1) BE556813A (en)
FR (1) FR1173687A (en)
GB (1) GB831998A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963594A (en) 1975-06-03 1976-06-15 Aluminum Company Of America Electrochemical treatment of aluminum surfaces with an aqueous solution of hydrochloric acid and gluconic acid
EP1710029A3 (en) * 2005-04-05 2006-10-18 Rolls-Royce plc Core leaching

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032684A (en) * 1976-09-10 1977-06-28 Rjr Archer, Inc. Laminated backing structure for composite lithographic plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963594A (en) 1975-06-03 1976-06-15 Aluminum Company Of America Electrochemical treatment of aluminum surfaces with an aqueous solution of hydrochloric acid and gluconic acid
EP1710029A3 (en) * 2005-04-05 2006-10-18 Rolls-Royce plc Core leaching
US7935295B2 (en) 2005-04-05 2011-05-03 Rolls Royce, Plc Core leaching

Also Published As

Publication number Publication date
FR1173687A (en) 1959-02-27
BE556813A (en)

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