ZA725143B - Method and apparatus for improving the contrast during electrostatic printing - Google Patents
Method and apparatus for improving the contrast during electrostatic printingInfo
- 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
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)
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)
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 |
-
1971
- 1971-08-16 CH CH1210571A patent/CH542464A/en not_active IP Right Cessation
-
1972
- 1972-03-23 NL NL7203871A patent/NL7203871A/xx unknown
- 1972-04-27 DE DE19722220810 patent/DE2220810A1/en active Pending
- 1972-06-13 CA CA144,556A patent/CA968146A/en not_active Expired
- 1972-06-14 FR FR7221334A patent/FR2149751A5/fr not_active Expired
- 1972-07-18 GB GB3346372A patent/GB1391945A/en not_active Expired
- 1972-07-24 ZA ZA725143A patent/ZA725143B/en unknown
- 1972-07-31 BE BE786994A patent/BE786994A/en unknown
- 1972-08-09 JP JP47079200A patent/JPS4831942A/ja active Pending
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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