[go: up one dir, main page]

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

Similar Documents

Publication Publication Date Title
IL44331A0 (en) Printing apparatus and method
AU464331B2 (en) Method and apparatus for finishing holds
AU3945672A (en) Method and apparatus for pumping
AU465154B2 (en) Method and apparatus for enhancing the transferability ofa developed image
ZA725336B (en) Improved structural panel and method f and apparatus for forming the same
AU4649472A (en) Distillation method and apparatus
CA945510A (en) Roll-through method and apparatus for electrocoating can ends
CA994411A (en) Method and apparatus for electrostatic printing
ZA725511B (en) Method and apparatus for producing printed matter
ZA725510B (en) Process for electrostatic printing
ZA725143B (en) Method and apparatus for improving the contrast during electrostatic printing
GB1410479A (en) Method and apparatus for strightening and elongated member
ZA723676B (en) Printing apparatus
IL42324A0 (en) Printing apparatus and method
IL41038A0 (en) Method and apparatus for electrolysis
GB1361119A (en) Method of and apparatus for printing
GB1415325A (en) Electrostatic printing apparatus
GB1366052A (en) Electrophotographic printing apparatus
GB1350240A (en) Method and apparatus for printing
GB1406671A (en) Screen printing method and apparatus
HU171042B (en) Method for raising ninepins and apparatus for carrying out the method
GB1402421A (en) Printing apparatus
GB1415200A (en) Electrostatic printing apparatus
CA980289A (en) Method and apparatus for electroforming
CA862932A (en) Electrostatic printing method and apparatus