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CH542464A - Method and apparatus for improving the contrast in electrostatic printing - Google Patents

Method and apparatus for improving the contrast in electrostatic printing

Info

Publication number
CH542464A
CH542464A CH1210571A CH1210571A CH542464A CH 542464 A CH542464 A CH 542464A CH 1210571 A CH1210571 A CH 1210571A CH 1210571 A CH1210571 A CH 1210571A CH 542464 A CH542464 A CH 542464A
Authority
CH
Switzerland
Prior art keywords
contrast
improving
electrostatic printing
electrostatic
printing
Prior art date
Application number
CH1210571A
Other languages
German (de)
Inventor
Forgo Gabor Ing Dr
Meyer Erwin
Moser Karl
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
Priority to CH1210571A priority Critical patent/CH542464A/en
Priority to NL7203871A priority patent/NL7203871A/xx
Priority to DE19722220810 priority patent/DE2220810A1/en
Priority to CA144,556A priority patent/CA968146A/en
Priority to FR7221334A priority patent/FR2149751A5/fr
Priority to GB3346372A priority patent/GB1391945A/en
Priority to ZA725143A priority patent/ZA725143B/en
Priority to BE786994A priority patent/BE786994A/en
Priority to JP47079200A priority patent/JPS4831942A/ja
Publication of CH542464A publication Critical patent/CH542464A/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)
  • Printing Methods (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
CH1210571A 1971-08-16 1971-08-16 Method and apparatus for improving the contrast in electrostatic printing CH542464A (en)

Priority Applications (9)

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
NL7203871A NL7203871A (en) 1971-08-16 1972-03-23
DE19722220810 DE2220810A1 (en) 1971-08-16 1972-04-27 METHOD AND DEVICE FOR IMPROVING THE CONTRAST IN ELECTROSTATIC PRINTING
CA144,556A CA968146A (en) 1971-08-16 1972-06-13 Method and apparatus for improving the contrast during electrostatic printing
FR7221334A FR2149751A5 (en) 1971-08-16 1972-06-14
GB3346372A GB1391945A (en) 1971-08-16 1972-07-18 Method and apparatus for electrostratic printing
ZA725143A ZA725143B (en) 1971-08-16 1972-07-24 Method and apparatus for improving the contrast during electrostatic printing
BE786994A BE786994A (en) 1971-08-16 1972-07-31 PROCESS AND DEVICE FOR REINFORCING THE CONTRAST OF PRINTS PRODUCED BY ELECTROSTATIC MEANS
JP47079200A JPS4831942A (en) 1971-08-16 1972-08-09

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
CH542464A true CH542464A (en) 1973-09-30

Family

ID=4379895

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1210571A CH542464A (en) 1971-08-16 1971-08-16 Method and apparatus for improving the contrast in 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
BE786994A (en) 1972-11-16
DE2220810A1 (en) 1973-03-01
NL7203871A (en) 1973-02-20
FR2149751A5 (en) 1973-03-30
JPS4831942A (en) 1973-04-26
GB1391945A (en) 1975-04-23
CA968146A (en) 1975-05-27
ZA725143B (en) 1973-05-30

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Legal Events

Date Code Title Description
PL Patent ceased