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GB692366A - Improvements in or relating to lithographic printing - Google Patents

Improvements in or relating to lithographic printing

Info

Publication number
GB692366A
GB692366A GB25476/50A GB2547650A GB692366A GB 692366 A GB692366 A GB 692366A GB 25476/50 A GB25476/50 A GB 25476/50A GB 2547650 A GB2547650 A GB 2547650A GB 692366 A GB692366 A GB 692366A
Authority
GB
United Kingdom
Prior art keywords
plate
printing
acid
portions
water
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
GB25476/50A
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.)
MUNROE HORACE HAMILTON
Original Assignee
MUNROE HORACE HAMILTON
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 MUNROE HORACE HAMILTON filed Critical MUNROE HORACE HAMILTON
Publication of GB692366A publication Critical patent/GB692366A/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
    • G03F7/04—Chromates
    • 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
    • B41C1/1008—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by removal or destruction of lithographic material on the lithographic support, e.g. by laser or spark ablation; by the use of materials rendered soluble or insoluble by heat exposure, e.g. by heat produced from a light to heat transforming system; by on-the-press exposure or on-the-press development, e.g. by the fountain of photolithographic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/04—Negative working, i.e. the non-exposed (non-imaged) areas are removed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/08—Developable by water or the fountain solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C2210/00—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation
    • B41C2210/24—Preparation or type or constituents of the imaging layers, in relation to lithographic printing forme preparation characterised by a macromolecular compound or binder obtained by reactions involving carbon-to-carbon unsaturated bonds, e.g. acrylics, vinyl polymers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

692,366. Photo-mechanical printing surfaces. TOLAND, W. C., and HAMILTON, M. H. Oct. 19, 1950, No. 25476/50. Class 98 (ii). [Also in Group XVI] A lithographic printing plate A comprises a flexible base member 10, and a thin hydrophilic coating 12 of colloidal material bonded to the base member, the coating including at its exposed surface area relatively hard greasereceptive printing portions, and relatively yieldable water-receptive non-printing portions, a water-soluble organic dibasic acid in the form of a finely-divided solid being incorporated in the non-printing portions of the plate and being operative in the presence of mixture applied to the plate to repel adhesion of small amounts of greasy ink to the non-printing portions when the latter are contacted by an inking roller. The dibasic acid used may be oxalic acid, tartaric acid, succinic acid, fumaric acid, or malonic acid, and the hydrophilic coating comprises a colloid selected from the group comprising polyvinyl alcohol, gelatine, gum arabic, Irish moss, and water-soluble cellulose. A halftone plate made by the albumic process may be produced by coating the plate with albumin and ammonium bichromate and subsequently exposing the plate to actinic light passed through a photographic negative and intervening screen. The unexposed portions of the albumin are subsequently dissolved away, leaving the printing image 14.
GB25476/50A 1944-10-21 1950-10-19 Improvements in or relating to lithographic printing Expired GB692366A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55983244A 1944-10-21 1944-10-21
US790156A US2532866A (en) 1944-10-21 1947-12-06 Method and plate for lithographic printing

Publications (1)

Publication Number Publication Date
GB692366A true GB692366A (en) 1953-06-03

Family

ID=27072178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25476/50A Expired GB692366A (en) 1944-10-21 1950-10-19 Improvements in or relating to lithographic printing

Country Status (2)

Country Link
US (1) US2532866A (en)
GB (1) GB692366A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832545C (en) * 1950-01-24 1952-02-25 Kalle & Co Ag Layers for photomechanical reproduction
US2922715A (en) * 1956-03-26 1960-01-26 Polychrome Corp Presensitized printing plate and method for preparing same
US3334584A (en) * 1962-09-24 1967-08-08 William C Toland Production of lithographic printing plates
US3489561A (en) * 1965-08-17 1970-01-13 Ball Brothers Co Inc Lithographic plate cleaning and desensitizing solution
US3485629A (en) * 1966-07-21 1969-12-23 Bell & Howell Co Photo process
EP0450199B1 (en) * 1990-04-04 1995-08-23 Agfa-Gevaert N.V. Water developable diazo based lithographic printing plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB236621A (en) * 1924-04-04 1925-07-06 Leonardo Pepe Improvements in or relating to photo-mechanical printing surfaces and processes
US2184310A (en) * 1937-06-10 1939-12-26 Du Pont Photographic and printing media
US2302816A (en) * 1941-01-11 1942-11-24 Toland Planographic printing
US2453735A (en) * 1945-01-18 1948-11-16 Toland William Craig Fountain solution roller

Also Published As

Publication number Publication date
US2532866A (en) 1950-12-05

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