GB1121868A - Lithographic plate and method of manufacturing same - Google Patents

Lithographic plate and method of manufacturing same

Info

Publication number
GB1121868A
GB1121868A GB49040/65A GB4904065A GB1121868A GB 1121868 A GB1121868 A GB 1121868A GB 49040/65 A GB49040/65 A GB 49040/65A GB 4904065 A GB4904065 A GB 4904065A GB 1121868 A GB1121868 A GB 1121868A
Authority
GB
United Kingdom
Prior art keywords
coating
base
base sheet
pounds
zinc oxide
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
GB49040/65A
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.)
Mead Corp
Original Assignee
Mead 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 Mead Corp filed Critical Mead Corp
Publication of GB1121868A publication Critical patent/GB1121868A/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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof

Abstract

A lithographic printing plate is produced by applying to a base sheet, e.g. high wet strength paper, a surface coating, e.g. in the form of a dispersion in water, having a solids content of 50-75% by weight and containing an inert filler (e.g. clay), zinc oxide and an ammonia neutralized polymerised acrylic acid having an average molecular weight in excess of 60 000 and sufficient ammonium ion to maintain the acid in solution in the presence of the zinc oxide, and thereafter drying the coating on the base sheet at least to a non-tacky condition without direct physical contact of the exposed surface of the coating with the drying means whereby the evaporation of the liquid solvent of the coating is effected in a region away from the exposed surface of the coating to form a continuous hydraphilic water-insoluble lithographic surface. Drying may be effected by infra-red heaters and/or drum dryers, these latter only contacting the coating when this has been dried at least to a non-tacky condition, otherwise contacting the base sheet. The coating composition may contain 10-13% by weight of the polymerised acrylic acid and also a dispersing agent, e.g. sodium hexametaphosphate and may be applied to the base by blade coating. The base sheet may have one or two base coatings of inert filler (e.g. clay) starch, zinc oxide and melamine resin applied thereto at the rate of 6-9 pounds of dry solids of coating composition of a first coating per 3300 square feet of paper base surface and 3-4 pounds of a second coating per 3300 square feet of surface. The surface coating may be applied at the rate of at least 4 pounds of dry solids for 3300 square feet of surface. Other suitable supports for the lithographic surface may be fibreboard, textile fabrics, plastic sheet and metal strips.
GB49040/65A 1964-11-23 1965-11-18 Lithographic plate and method of manufacturing same Expired GB1121868A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41305764A 1964-11-23 1964-11-23
US623555A US3415187A (en) 1964-11-23 1967-03-16 Lithographic plate and method for manufacturing same

Publications (1)

Publication Number Publication Date
GB1121868A true GB1121868A (en) 1968-07-31

Family

ID=27022049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49040/65A Expired GB1121868A (en) 1964-11-23 1965-11-18 Lithographic plate and method of manufacturing same

Country Status (5)

Country Link
US (1) US3415187A (en)
BE (1) BE672558A (en)
DE (1) DE1546789A1 (en)
GB (1) GB1121868A (en)
NL (1) NL6515162A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147003A (en) * 1983-09-22 1985-05-01 Ricoh Kk Recording medium for ink-jet printing
WO1999044838A1 (en) * 1998-03-06 1999-09-10 Kodak Polychrome Graphics Company Ltd. Printing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2542784A (en) * 1945-09-21 1951-02-20 Addressograph Multigraph Planographic printing plate and method of preparing the same
BE509774A (en) * 1951-03-06
BE557236A (en) * 1952-06-19
US3228327A (en) * 1962-04-05 1966-01-11 Kvp Sutherland Paper Co Multipurpose duplicating master

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147003A (en) * 1983-09-22 1985-05-01 Ricoh Kk Recording medium for ink-jet printing
WO1999044838A1 (en) * 1998-03-06 1999-09-10 Kodak Polychrome Graphics Company Ltd. Printing
US6579599B1 (en) 1998-03-06 2003-06-17 Kodak Polychrome Graphics Llc Printing

Also Published As

Publication number Publication date
DE1546789A1 (en) 1970-10-08
US3415187A (en) 1968-12-10
BE672558A (en) 1966-05-20
NL6515162A (en) 1966-05-24

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