GB1533311A - Electrostatographic diagnostics system - Google Patents
Electrostatographic diagnostics systemInfo
- Publication number
- GB1533311A GB1533311A GB1702976A GB1702976A GB1533311A GB 1533311 A GB1533311 A GB 1533311A GB 1702976 A GB1702976 A GB 1702976A GB 1702976 A GB1702976 A GB 1702976A GB 1533311 A GB1533311 A GB 1533311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- corona
- generator
- independently
- imaging surface
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/163—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap
- G03G15/1635—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer using the force produced by an electrostatic transfer field formed between the second base and the electrographic recording member, e.g. transfer through an air gap the field being produced by laying down an electrostatic charge behind the base or the recording member, e.g. by a corona device
- G03G15/1645—Arrangements for controlling the amount of charge
-
- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0266—Arrangements for controlling the amount of charge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
1533311 Electrophotographic copying apparatus XEROX CORP 27 April 1976 [28 April 1975 26 Aug 1975] 17029/76 Heading B6C The apparatus comprises an imaging surface 12 with an electrically grounded substrate; a plurality of separate corona generators 14, 24, 33, 34, 46 having corona emitting electrodes 52 shielded with conductive shields 60; and current measurement means connectable between separate power supply means for each generator and said grounded substrate for measuring only the output current flowing between each individual corona generator and said imaging surface 12 independently of current flow to its respective shield 60, independently of input current to the generator, and independently of the flow of output current from other corona generators to said imaging surface 12. The current is measured by switching a volmeter to points A, C, D, E or F and measuring the potential across a pre-set resistor, such as 58 at point A. The D.C. and A.C. components of the current may be separately measured for A.C. generators 24, 34. The bias applied to the applicator rolls 22 of developing apparatus 20 may be measured also, at point B. Means for retroactively controlling each power supply means 54, to maintain a selected output current for its respective corona generator, is also provided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/572,683 US3950680A (en) | 1975-04-28 | 1975-04-28 | Electrostatographic diagnostics system |
US05/607,746 US4077709A (en) | 1975-08-26 | 1975-08-26 | Transfer charge control system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1533311A true GB1533311A (en) | 1978-11-22 |
Family
ID=27075910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1702976A Expired GB1533311A (en) | 1975-04-28 | 1976-04-27 | Electrostatographic diagnostics system |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS51131635A (en) |
DE (1) | DE2611503C2 (en) |
FR (1) | FR2309908A1 (en) |
GB (1) | GB1533311A (en) |
NL (1) | NL7602999A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109722A1 (en) * | 1982-11-19 | 1984-05-30 | N.V. Nederlandsche Apparatenfabriek NEDAP | A method and an apparatus for automatically adjusting the potential of a photosensitive layer |
EP0164262A2 (en) * | 1984-06-01 | 1985-12-11 | Kabushiki Kaisha Toshiba | Developing apparatus |
US4688923A (en) * | 1985-02-20 | 1987-08-25 | Kabushiki Kaisha Toshiba | Developing apparatus |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5394931A (en) * | 1977-01-28 | 1978-08-19 | Ricoh Co Ltd | Charging method |
JPS53116163A (en) * | 1977-03-18 | 1978-10-11 | Canon Inc | Electric charger for electrophotography |
JPS549631A (en) * | 1977-06-22 | 1979-01-24 | Fujitsu Ltd | Automatic control system for charging amount |
JPS5418746A (en) * | 1977-07-12 | 1979-02-13 | Ricoh Co Ltd | Destaticizing and separating device |
JPS5483839A (en) * | 1977-12-16 | 1979-07-04 | Canon Inc | Image control |
GB2039101B (en) * | 1978-08-24 | 1983-05-25 | Canon Kk | Control of electrostatic recording apparatus |
JPS5535331A (en) * | 1978-09-04 | 1980-03-12 | Ricoh Co Ltd | Transfer method of electrophotographic copier |
DE2849222A1 (en) * | 1978-11-13 | 1980-05-22 | Hoechst Ag | METHOD FOR ELECTROSTATICALLY CHARGING A DIELECTRIC LAYER AND DEVICE FOR CARRYING OUT THE METHOD |
JPS5640871A (en) * | 1979-09-13 | 1981-04-17 | Canon Inc | Method and device for electrostatic isolation |
JPS5647064A (en) * | 1979-09-25 | 1981-04-28 | Konishiroku Photo Ind Co Ltd | Discharge quantity controlling method of discharger for electrophotography or electrostatic recording |
JPS57182761A (en) * | 1981-05-05 | 1982-11-10 | Ricoh Co Ltd | Corona discharging device |
JPS5825661A (en) * | 1981-08-07 | 1983-02-15 | Ricoh Co Ltd | Electrostatic charger |
JPS5972067A (en) * | 1982-10-18 | 1984-04-23 | Toshiba Corp | Detector for abnormality of electrifier |
JPS59133570A (en) * | 1983-01-20 | 1984-07-31 | Sharp Corp | Abnormality detecting device of corona discharger |
DE3444554A1 (en) * | 1984-12-06 | 1986-06-12 | Ernst Roederstein Spezialfabrik für Kondensatoren GmbH, 8300 Landshut | Circuit arrangement for voltage and current stabilisation of a high-voltage generator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE715685A (en) * | 1967-07-06 | 1968-10-16 | ||
US3557368A (en) * | 1968-01-25 | 1971-01-19 | Iwatsu Electric Co Ltd | Charging device applied for making electrophotography |
US3813548A (en) * | 1971-01-21 | 1974-05-28 | Xerox Corp | Corona generating methods and apparatus therefor |
BE794567A (en) * | 1972-01-27 | 1973-07-26 | Xerox Corp | PERFECTIONED METHODS OF TRANSFER OF ELECTROSTATIC IMAGES AND APPARATUS FOR IMPLEMENTING THESE METHODS |
DE2213419A1 (en) * | 1972-03-20 | 1973-10-04 | Kalle Ag | METHODS FOR REDUCING OZONE PRODUCTION |
US3805069A (en) * | 1973-01-18 | 1974-04-16 | Xerox Corp | Regulated corona generator |
-
1976
- 1976-03-18 DE DE19762611503 patent/DE2611503C2/en not_active Expired
- 1976-03-22 NL NL7602999A patent/NL7602999A/en not_active Application Discontinuation
- 1976-04-21 JP JP4606976A patent/JPS51131635A/en active Pending
- 1976-04-27 GB GB1702976A patent/GB1533311A/en not_active Expired
- 1976-04-28 FR FR7612641A patent/FR2309908A1/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0109722A1 (en) * | 1982-11-19 | 1984-05-30 | N.V. Nederlandsche Apparatenfabriek NEDAP | A method and an apparatus for automatically adjusting the potential of a photosensitive layer |
EP0164262A2 (en) * | 1984-06-01 | 1985-12-11 | Kabushiki Kaisha Toshiba | Developing apparatus |
EP0164262A3 (en) * | 1984-06-01 | 1986-01-22 | Kabushiki Kaisha Toshiba | Developing apparatus |
US4653426A (en) * | 1984-06-01 | 1987-03-31 | Kabushiki Kaisha Toshiba | Developing apparatus |
US4688923A (en) * | 1985-02-20 | 1987-08-25 | Kabushiki Kaisha Toshiba | Developing apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE2611503C2 (en) | 1986-09-04 |
JPS51131635A (en) | 1976-11-16 |
FR2309908A1 (en) | 1976-11-26 |
NL7602999A (en) | 1976-11-01 |
DE2611503A1 (en) | 1976-11-18 |
FR2309908B1 (en) | 1982-05-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |