GB1072865A - Surface treatment for magnesium and zinc base metal photoengraving sheet - Google Patents

Surface treatment for magnesium and zinc base metal photoengraving sheet

Info

Publication number
GB1072865A
GB1072865A GB376565A GB376565A GB1072865A GB 1072865 A GB1072865 A GB 1072865A GB 376565 A GB376565 A GB 376565A GB 376565 A GB376565 A GB 376565A GB 1072865 A GB1072865 A GB 1072865A
Authority
GB
United Kingdom
Prior art keywords
magnesium
photoengraving
sheet
surface treatment
base 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
GB376565A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1072865A publication Critical patent/GB1072865A/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
    • B41N3/038—Treatment with a chromium compound, a silicon compound, a phophorus compound or a compound of a metal of group IVB; Hydrophilic coatings obtained by hydrolysis of organometallic compounds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • G03G13/32—Relief printing plates
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/14—Inert intermediate or cover layers for charge-receiving layers
    • G03G5/142—Inert intermediate layers
    • G03G5/144—Inert intermediate layers comprising inorganic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

An etch resistant film is formed on a magnesium or zinc base by immersing in an aqueous chromate solution (pH 1.3 to 5.0) comprising either 50 to 180 g/1 of sodium dichromate and 10 to 50 g/1 of potassium chromium sulphate or 8 to 12 g/1 of chromic acid. After drying, a photo-conductive zinc oxide-resin composition is deposited on the chromate coating. The base may be first cleaned using either an alkaline solution or a slurry of pumice powder and a 50 g/1 aqueous solution of trisodium phosphate. The coating is heated to 150 to 275 DEG C., before or after depositing the photo-conductive coating.
GB376565A 1964-02-26 1965-01-28 Surface treatment for magnesium and zinc base metal photoengraving sheet Expired GB1072865A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34738764A 1964-02-26 1964-02-26
US34739364A 1964-02-26 1964-02-26

Publications (1)

Publication Number Publication Date
GB1072865A true GB1072865A (en) 1967-06-21

Family

ID=26995251

Family Applications (1)

Application Number Title Priority Date Filing Date
GB376565A Expired GB1072865A (en) 1964-02-26 1965-01-28 Surface treatment for magnesium and zinc base metal photoengraving sheet

Country Status (3)

Country Link
DE (1) DE1219954B (en)
FR (1) FR1431175A (en)
GB (1) GB1072865A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748190A (en) * 1971-05-13 1973-07-24 Grace W R & Co Laminated aluminum article and method
JPS5232704A (en) * 1975-09-08 1977-03-12 Nippon Paint Co Ltd Photoosensitive resin intaglio press plate

Also Published As

Publication number Publication date
FR1431175A (en) 1966-03-11
DE1219954B (en) 1966-06-30

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