ZA725143B - Method and apparatus for improving the contrast during electrostatic printing - Google Patents

Method and apparatus for improving the contrast during electrostatic printing

Info

Publication number
ZA725143B
ZA725143B ZA725143A ZA725143A ZA725143B ZA 725143 B ZA725143 B ZA 725143B ZA 725143 A ZA725143 A ZA 725143A ZA 725143 A ZA725143 A ZA 725143A ZA 725143 B ZA725143 B ZA 725143B
Authority
ZA
South Africa
Prior art keywords
improving
electrostatic printing
during electrostatic
contrast during
contrast
Prior art date
Application number
ZA725143A
Inventor
G Forgo
Original Assignee
Zellweger Uster Ag
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 Zellweger Uster Ag filed Critical Zellweger Uster Ag
Publication of ZA725143B publication Critical patent/ZA725143B/en

Links

Classifications

    • 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
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Printing Methods (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
ZA725143A 1971-08-16 1972-07-24 Method and apparatus for improving the contrast during electrostatic printing ZA725143B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1210571A CH542464A (en) 1971-08-16 1971-08-16 Method and apparatus for improving the contrast in electrostatic printing

Publications (1)

Publication Number Publication Date
ZA725143B true ZA725143B (en) 1973-05-30

Family

ID=4379895

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA725143A ZA725143B (en) 1971-08-16 1972-07-24 Method and apparatus for improving the contrast during electrostatic printing

Country Status (9)

Country Link
JP (1) JPS4831942A (en)
BE (1) BE786994A (en)
CA (1) CA968146A (en)
CH (1) CH542464A (en)
DE (1) DE2220810A1 (en)
FR (1) FR2149751A5 (en)
GB (1) GB1391945A (en)
NL (1) NL7203871A (en)
ZA (1) ZA725143B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330819B2 (en) * 1974-07-19 1978-08-29
NL762871A (en) * 1974-11-01
JPS56165031A (en) * 1980-05-22 1981-12-18 Mitsubishi Rayon Co Production of knot like feather yarn
JPH0656511B2 (en) * 1983-03-07 1994-07-27 富士ゼロックス株式会社 Latent image forming method in electrophotography
JPS6021749U (en) * 1983-07-22 1985-02-14 富士ゼロックス株式会社 electrophotographic copying device

Also Published As

Publication number Publication date
GB1391945A (en) 1975-04-23
DE2220810A1 (en) 1973-03-01
FR2149751A5 (en) 1973-03-30
JPS4831942A (en) 1973-04-26
CH542464A (en) 1973-09-30
NL7203871A (en) 1973-02-20
BE786994A (en) 1972-11-16
CA968146A (en) 1975-05-27

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