GB781814A - Improvements in or relating to lithographic printing plates - Google Patents

Improvements in or relating to lithographic printing plates

Info

Publication number
GB781814A
GB781814A GB1912655A GB1912655A GB781814A GB 781814 A GB781814 A GB 781814A GB 1912655 A GB1912655 A GB 1912655A GB 1912655 A GB1912655 A GB 1912655A GB 781814 A GB781814 A GB 781814A
Authority
GB
United Kingdom
Prior art keywords
plate
aluminium
hydrophilic colloid
twenty
lithographic printing
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
GB1912655A
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.)
Algraphy Ltd
Original Assignee
Algraphy 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 Algraphy Ltd filed Critical Algraphy Ltd
Priority to GB1912655A priority Critical patent/GB781814A/en
Publication of GB781814A publication Critical patent/GB781814A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment
    • C25D11/246—Chemical after-treatment for sealing layers
    • 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
    • B41N3/036—Chemical or electrical pretreatment characterised by the presence of a polymeric hydrophilic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1091—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by physical transfer from a donor sheet having an uniform coating of lithographic material using thermal means as provided by a thermal head or a laser; by mechanical pressure, e.g. from a typewriter by electrical recording ribbon therefor

Landscapes

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

Abstract

781,814. Printing surfaces. ALGRAPHY, Ltd., and ADAMS, R. A. C. May 2, 1956 [July 1, 1955], No. 19126/55. Class 100(2) A lithographic printing plate comprises a plate of aluminium or aluminium alloy having a porous absorbent anodic layer formed therein and having a hydrophilic colloid sealed ink the anodic layer. The method of preparing such a plate consists in anodizing the plate of aluminium or aluminium oxide so as to form the porous absorbent layer thereon and then either dipping the anodized plate for several minutes into a hydrophilic colloid solution maintained at ambient temperature and subsequently treating with boiling water or steam for twenty to thirty minutes or immersing the plate in a boiling solution of the hydrophilic colloid for twenty to thirty minutes. Suitable hydrophilic colloids include gum arabic, gum ghatti, mesquite gum, the sodium or ammonium salts of arabic acid, carboxy-methyl cellulose, alginic acid, carboxymethyl starch, methyl cellulose and oxidized starch.
GB1912655A 1955-07-01 1955-07-01 Improvements in or relating to lithographic printing plates Expired GB781814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1912655A GB781814A (en) 1955-07-01 1955-07-01 Improvements in or relating to lithographic printing plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1912655A GB781814A (en) 1955-07-01 1955-07-01 Improvements in or relating to lithographic printing plates

Publications (1)

Publication Number Publication Date
GB781814A true GB781814A (en) 1957-08-28

Family

ID=10124185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1912655A Expired GB781814A (en) 1955-07-01 1955-07-01 Improvements in or relating to lithographic printing plates

Country Status (1)

Country Link
GB (1) GB781814A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435538A1 (en) * 1978-09-07 1980-04-04 Alusuisse SEALING BATH AND METHOD FOR PREVENTING DEPOSIT FORMATIONS IN THE SEALING OF ANODIZED ALUMINUM SUFACES
EP0428071A2 (en) * 1989-11-13 1991-05-22 Fuji Photo Film Co., Ltd. Method for producing substrate for PS plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435538A1 (en) * 1978-09-07 1980-04-04 Alusuisse SEALING BATH AND METHOD FOR PREVENTING DEPOSIT FORMATIONS IN THE SEALING OF ANODIZED ALUMINUM SUFACES
EP0428071A2 (en) * 1989-11-13 1991-05-22 Fuji Photo Film Co., Ltd. Method for producing substrate for PS plate
EP0428071A3 (en) * 1989-11-13 1991-12-11 Fuji Photo Film Co., Ltd. Method for producing substrate for ps plate

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