NL7217551A - Master sheet - for electrostatic copying - Google Patents

Master sheet - for electrostatic copying

Info

Publication number
NL7217551A
NL7217551A NL7217551A NL7217551A NL7217551A NL 7217551 A NL7217551 A NL 7217551A NL 7217551 A NL7217551 A NL 7217551A NL 7217551 A NL7217551 A NL 7217551A NL 7217551 A NL7217551 A NL 7217551A
Authority
NL
Netherlands
Prior art keywords
sheet
electrical conductivity
parts
electrostatic copying
print
Prior art date
Application number
NL7217551A
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 filed Critical
Priority claimed from AU50457/72A external-priority patent/AU473788B2/en
Publication of NL7217551A publication Critical patent/NL7217551A/en

Links

Classifications

    • 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
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/225—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 using contact-printing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)

Abstract

Electrostatic copying is effected by placing a print-off sheet against a transfer sheet having a backing layer and a transferable coating on one surface, delimiting background image parts on this surface by a partial transfer of the transferable coating whereby difference in electrical conductivity are produced on the surface between the image and background parts, thereafter sepg. the transfer sheet from the print-off sheet and using one of the sheets as a master for a dielectric recording element by the application of an electric field which produces a charge pattern in accordance with the differences in electrical conductivity brought about by the contact sheet and developing the charge pattern so produced on the recording element with a developer sensitive to this pattern. Specif. the electrical conductivity of the image parts is greater than that of the background parts.
NL7217551A 1971-12-24 1972-12-22 Master sheet - for electrostatic copying NL7217551A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPA751871 1971-12-24
AU50457/72A AU473788B2 (en) 1972-12-22 1972-12-22 Duplication method and means

Publications (1)

Publication Number Publication Date
NL7217551A true NL7217551A (en) 1973-06-26

Family

ID=25628922

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7217551A NL7217551A (en) 1971-12-24 1972-12-22 Master sheet - for electrostatic copying

Country Status (1)

Country Link
NL (1) NL7217551A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed