GB774702A - Improvements in planographic master forming blank and method of making the same - Google Patents

Improvements in planographic master forming blank and method of making the same

Info

Publication number
GB774702A
GB774702A GB2099054A GB2099054A GB774702A GB 774702 A GB774702 A GB 774702A GB 2099054 A GB2099054 A GB 2099054A GB 2099054 A GB2099054 A GB 2099054A GB 774702 A GB774702 A GB 774702A
Authority
GB
United Kingdom
Prior art keywords
layer
coating
backing
blank
conductive
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
GB2099054A
Inventor
Harold Richard Dalton
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.)
Timefax Corp
Original Assignee
Timefax 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
Priority to US755263A priority Critical patent/US2664043A/en
Priority to GB428252A priority patent/GB760675A/en
Application filed by Timefax Corp filed Critical Timefax Corp
Priority to GB2099054A priority patent/GB774702A/en
Publication of GB774702A publication Critical patent/GB774702A/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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/24—Stencils; Stencil materials; Carriers therefor
    • B41N1/246—Stencils; Stencil materials; Carriers therefor characterised by the electroconductive means or additives
    • 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
    • B41C1/1033—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 by laser or spark ablation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

774,702. Coated fabrics. TIMEFAX CORPORATION. July 19, 1954, No. 20990/54. Class 140. [Also in Groups XVI and XL (b)] In a printing blank of the planographic type having a backing, e.g. paper, cardboard, cloth, to which an electrically conductive coating layer is strippably attached, the surface of the backing is treated prior to the application of the layer, to render it hydrophilic, i.e. capable of attracting, absorbing or adsorbing water, and the conductive layer has incorporated therein powdered carbon to render the layer perforatable in minute areas by stylus-applied electric voltages and thereby to transfer to the hydrophilic surface a corresponding ink-receptive deposit at each minute area. The conductive coating 10 is preferably formed as a film-forming plastic, such as a vinyl ester polymer, vinyl chloride polymer, styrene polymers, cellulose acetate, ethyl cellulose, as referred to in Specification 760,675, impregnated with carbon black. The backing layer 11 has its surface treated with a pigmented or non-pigmented coating such as casein and formaldehyde or carboxy methyl cellulose and an aluminium salt mixed with starch, casein, polyvinyl alcohol, urea formaldehyde or other binder. The conductive coating on the backing 11 may be formed as a single layer 10 or as superposed layers 10a, 10b of different resistances, and the blank is provided with a whiteish masking coating 12. The stripped conductive coating with its masking coating can be used as a stencil, whilst the layer 11 with its hydrophilic surface and deposits of carbon can be used as a planographic blank. A water-repellent ingredient such as a chlorinated paraffin wax or an octadecanoic amide is preferably incorporated in the conductive plastic layer. The upper coating may be provided with a transverse strip 13 to facilitate the stripping operation and longitudinal reinforcing strips may be added when the stencil is to be mounted on a mimeograph drum.
GB2099054A 1947-06-17 1954-07-19 Improvements in planographic master forming blank and method of making the same Expired GB774702A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US755263A US2664043A (en) 1947-06-17 1947-06-17 Stencil recording blank and process of preparation
GB428252A GB760675A (en) 1952-02-18 1952-02-18 Improvements in stencil recording blank and process of preparation
GB2099054A GB774702A (en) 1954-07-19 1954-07-19 Improvements in planographic master forming blank and method of making the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2099054A GB774702A (en) 1954-07-19 1954-07-19 Improvements in planographic master forming blank and method of making the same

Publications (1)

Publication Number Publication Date
GB774702A true GB774702A (en) 1957-05-15

Family

ID=10155296

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2099054A Expired GB774702A (en) 1947-06-17 1954-07-19 Improvements in planographic master forming blank and method of making the same

Country Status (1)

Country Link
GB (1) GB774702A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263604A (en) * 1962-01-12 1966-08-02 Timefax Corp Electro-responsive blanks
FR2346164A1 (en) * 1976-03-29 1977-10-28 Dick Co Ab INTERMEDIATE TO FORM LATENT IMAGES
EP0008198A2 (en) * 1978-08-04 1980-02-20 Sekisui Kagaku Kogyo Kabushiki Kaisha Electric recording material and method of electric recording

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263604A (en) * 1962-01-12 1966-08-02 Timefax Corp Electro-responsive blanks
FR2346164A1 (en) * 1976-03-29 1977-10-28 Dick Co Ab INTERMEDIATE TO FORM LATENT IMAGES
EP0008198A2 (en) * 1978-08-04 1980-02-20 Sekisui Kagaku Kogyo Kabushiki Kaisha Electric recording material and method of electric recording
EP0008198A3 (en) * 1978-08-04 1980-03-05 Sekisui Kagaku Kogyo Kabushiki Kaisha Electric recording material, method of electric recording, and use of electric recording material as electro-stencil master sheet

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