GB1088834A - Electrophotographic method for preparing planographic printing plates - Google Patents

Electrophotographic method for preparing planographic printing plates

Info

Publication number
GB1088834A
GB1088834A GB43223/64A GB4322364A GB1088834A GB 1088834 A GB1088834 A GB 1088834A GB 43223/64 A GB43223/64 A GB 43223/64A GB 4322364 A GB4322364 A GB 4322364A GB 1088834 A GB1088834 A GB 1088834A
Authority
GB
United Kingdom
Prior art keywords
liquid
conductive
photo
zinc oxide
areas
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
GB43223/64A
Inventor
Josephus Julius Fierens
Karel Frans De Troeyer
Noel Josef De Volder
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.)
Agfa Gevaert NV
Original Assignee
Agfa Gevaert NV
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 Agfa Gevaert NV filed Critical Agfa Gevaert NV
Priority to GB43223/64A priority Critical patent/GB1088834A/en
Priority to CH144869A priority patent/CH477026A/en
Priority to JP40064680A priority patent/JPS5125761B1/ja
Priority to CH1446165A priority patent/CH477025A/en
Priority to BE671251D priority patent/BE671251A/xx
Priority to NL6513710A priority patent/NL6513710A/xx
Priority to DE19651447923 priority patent/DE1447923A1/en
Priority to FR35878A priority patent/FR1460110A/en
Priority to GB53303/65A priority patent/GB1130177A/en
Publication of GB1088834A publication Critical patent/GB1088834A/en
Priority to US873028A priority patent/US3698312A/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
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development
    • 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
    • B41C1/1041—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by modification of the lithographic properties without removal or addition of material, e.g. by the mere generation of a lithographic pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L25/00—Devices for damping printing surfaces, e.g. moistening printing surfaces in connection with lithographic printing
    • B41L25/005—Pre-damping etching devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/06—Lithographic printing
    • 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
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G13/24—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20 whereby at least two steps are performed simultaneously
    • 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
    • G03G13/28—Planographic printing plates
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/101—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer for wetting the recording material
    • G03G15/102—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer for wetting the recording material for differentially wetting the recording material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/16—Developers not provided for in groups G03G9/06 - G03G9/135, e.g. solutions, aerosols
    • G03G9/18—Differentially wetting liquid developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

1,088,834. Electro-photographic processes for producing printing plates. GEVAERT-AGFA N.V. Oct.22, 1964, No.43223/64. Headings G2H and G2M. A hydrophobic photo-conductive surface is given a temporary or permanent hydrophilic character, in the configuration of an electrical latent image, by the imagewise or overall application of a liquid to it, after or during charging. Preferably, the liquid, applied overall, wets the charged areas, which it converts to a hydrophilic character, and is repelled from the uncharged areas. The liquid may, however, be deposited only in the charged areas, through the influence of the charge on a capillary applicator. Alternatively, the potential of charging electrodes can be varied to cause wetting in either the more conductive or less conductive parts of a latent conductivity image. The mere presence of an aqueous wetting liquid may be sufficient to repel lithographic ink from the non-image areas. Preferably, however, the liquid has a permanent hydrophilizing effect and is acidic to react with photo-conductive zinc oxide to form a hydrophilic precipitate. In the examples, photoconductive zinc oxide in a binder of polyvinylacetate or a copolymer of vinylacetate/laurate or vinylacetate/stearate is coated on a sheet aluminium or paper support. After treatment with liquid applied by means of a helically grooved roller Figs. 1 and 2 (not shown) the surface is contacted immediately with lithographic ink. The hydrophilizing liquids used include aqueous solutions of acid cupric chloride, hydrochloric and tannic acids, aluminium sulphate, ferric chloride, oxalic, tannic and phosphoric acids and potassium ferrocyanide. The following aqueous solutions are also referred to in this connection: ammonium and sodium phosphates, potassium ferricyanide and tartaric and fluorobutyric acids. Thickening agents used include: gum arabic, carboxymethyl cellulose, casein and polyvinylpyrrolidone. Other additives include dyes, surface active agents, water miscible solvents, soluble salts, hygroscopic salts and glycerine. Alternative binders for photo-conductive zinc oxide include polyvinyl butyral and silicone resins. The hydrophobic nature of the photoconductive surface may be increased by the application of a lithographic lacquer. A photo-conductive layer may be overcoated with a hydrophobic layer.
GB43223/64A 1964-10-22 1964-10-22 Electrophotographic method for preparing planographic printing plates Expired GB1088834A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB43223/64A GB1088834A (en) 1964-10-22 1964-10-22 Electrophotographic method for preparing planographic printing plates
CH144869A CH477026A (en) 1964-10-22 1965-10-20 Planographic printing method and apparatus for carrying out the same
JP40064680A JPS5125761B1 (en) 1964-10-22 1965-10-20
CH1446165A CH477025A (en) 1964-10-22 1965-10-20 Process for the electrophotographic production of a planographic printing plate
NL6513710A NL6513710A (en) 1964-10-22 1965-10-22
BE671251D BE671251A (en) 1964-10-22 1965-10-22
DE19651447923 DE1447923A1 (en) 1964-10-22 1965-10-22 Process for the electrophotographic production of a planographic printing plate
FR35878A FR1460110A (en) 1964-10-22 1965-10-22 Planographic printing process
GB53303/65A GB1130177A (en) 1964-10-22 1965-12-15 Planographic printing process and apparatus for performing same
US873028A US3698312A (en) 1964-10-22 1969-10-31 Rotary planographic printing press

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB43223/64A GB1088834A (en) 1964-10-22 1964-10-22 Electrophotographic method for preparing planographic printing plates
DEA0047884 1964-12-15

Publications (1)

Publication Number Publication Date
GB1088834A true GB1088834A (en) 1967-10-25

Family

ID=25964122

Family Applications (2)

Application Number Title Priority Date Filing Date
GB43223/64A Expired GB1088834A (en) 1964-10-22 1964-10-22 Electrophotographic method for preparing planographic printing plates
GB53303/65A Expired GB1130177A (en) 1964-10-22 1965-12-15 Planographic printing process and apparatus for performing same

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB53303/65A Expired GB1130177A (en) 1964-10-22 1965-12-15 Planographic printing process and apparatus for performing same

Country Status (7)

Country Link
US (1) US3698312A (en)
JP (1) JPS5125761B1 (en)
BE (1) BE671251A (en)
CH (2) CH477026A (en)
DE (1) DE1447923A1 (en)
GB (2) GB1088834A (en)
NL (1) NL6513710A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL146613B (en) * 1968-02-26 1975-07-15 Canon Kk ELECTROPHOTOGRAPHIC COPY PROCEDURE DEVELOPED WITH AN Aqueous LIQUID AND PHOTOGRAPHIC PRINT OBTAINED BY THIS METHOD.
SE381109B (en) * 1972-09-28 1975-11-24 Commw Of Australia PROCEDURE FOR OFFSET PRINTING
US4016814A (en) * 1973-04-13 1977-04-12 Xerox Corporation Planographic printing master
EP0076905B2 (en) * 1981-10-10 1991-05-02 BASF Lacke + Farben AG Flat-bed printing method
JPS59106195A (en) * 1982-12-10 1984-06-19 富士通株式会社 Method of indicating number of thick film pattern printing
JPH0162040U (en) * 1987-10-14 1989-04-20
EP0476109A1 (en) * 1990-04-04 1992-03-25 Sri International Electrographic gravure printing system
DE19732497B4 (en) * 1997-07-29 2005-08-11 Man Roland Druckmaschinen Ag Short inking unit in a printing unit of a rotary printing machine

Also Published As

Publication number Publication date
DE1447923A1 (en) 1969-02-20
GB1130177A (en) 1968-10-09
US3698312A (en) 1972-10-17
CH477026A (en) 1969-08-15
NL6513710A (en) 1966-03-25
JPS5125761B1 (en) 1976-08-02
BE671251A (en) 1966-04-22
CH477025A (en) 1969-08-15

Similar Documents

Publication Publication Date Title
GB1006453A (en) Improvements in or relating to electrical recording
GB1088834A (en) Electrophotographic method for preparing planographic printing plates
GB978744A (en) Photolithographic printing and plate therefor and light sensitive material for producing it
US4579591A (en) Desensitizing solution for use in offset printing
GB1271561A (en) Improvements in and relating to electrostatic copying arrangements
GB884457A (en) Method of imaging a photolithographic plate and elements for use in the preparation of same
US2988988A (en) Method of etching and dampening planographic printing plates and fountain solution therefor
US2957765A (en) Method of and composition for preparing lithographic printing plates
US3220837A (en) Diffusion transfer to stratum of a silver image inked and used in printing
US3106156A (en) Photoconductography employing molybdenum or ferrous oxide
US3095808A (en) Photoconductolithography employing rubeanates
GB1439029A (en) Lithographic printing
US3714891A (en) Process of using multi-purpose lithographic solution
GB1325906A (en) Electro-photogrpahy
US3445224A (en) Preparation of imaged offset master
US3152969A (en) Photoconductolithography employing hydrophobic images
US3106158A (en) Method of preparing lithographic printing plates
US3106157A (en) Photoconductolithography employing nickel salts
GB1134742A (en) Improvements in or relating to the production of planographic offset plates
US3582328A (en) Planographic printing plate from mercuric ion on silver diffusion transferred image
US3133498A (en) Method of preparing lithographic printing plates
GB1088857A (en) Electrostatic printing
GB1281698A (en) Metallic photographic products
US3830649A (en) Metal photographic plate comprising a silver halide and process
US3106517A (en) Photoconductography employing spongy images containing gelatin hardeners