GB1453474A - Method of electrically charging an electrographic layer - Google Patents
Method of electrically charging an electrographic layerInfo
- Publication number
- GB1453474A GB1453474A GB4795473A GB4795473A GB1453474A GB 1453474 A GB1453474 A GB 1453474A GB 4795473 A GB4795473 A GB 4795473A GB 4795473 A GB4795473 A GB 4795473A GB 1453474 A GB1453474 A GB 1453474A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- voltage
- electrically charging
- electrographic
- saturation voltage
- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
1453474 Electro-photography TURLABOR AG 15 Oct 1974 [16 Oct 1972] 47954/73 Heading G2H [Also in Division H1] Prior to use, an electrographic layer is corona charged to a voltage less than the value at which the secondary corona current occurring is at most 10% of the total current flowing to the layer. Preferably the voltage is less than half of the saturation voltage of the layer in its unused state, and is progressively reduced in proportion to the saturation voltage as the saturation voltage falls with use.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1508172A CH549823A (en) | 1972-10-16 | 1972-10-16 | ELECTROGRAPHIC COPYING PROCESS AND DEVICE FOR CARRYING OUT THIS PROCESS. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1453474A true GB1453474A (en) | 1976-10-20 |
Family
ID=4406172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4795473A Expired GB1453474A (en) | 1972-10-16 | 1973-10-15 | Method of electrically charging an electrographic layer |
Country Status (5)
Country | Link |
---|---|
US (1) | US3900776A (en) |
CA (1) | CA995297A (en) |
CH (1) | CH549823A (en) |
DE (1) | DE2339745B2 (en) |
GB (1) | GB1453474A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5511255A (en) * | 1978-07-11 | 1980-01-26 | Ricoh Co Ltd | Corona discharge device |
NL7902539A (en) * | 1979-04-02 | 1980-10-06 | Oce Nederland Bv | REVERSE DEVELOPMENT METHOD. |
JPS60254160A (en) * | 1984-05-31 | 1985-12-14 | Mita Ind Co Ltd | Electrophotographic method |
JPS62135848A (en) * | 1985-12-09 | 1987-06-18 | Sharp Corp | Driving control method for photosensitive body |
JP2677729B2 (en) * | 1991-12-03 | 1997-11-17 | シャープ株式会社 | Image forming method |
JPH0844143A (en) * | 1993-06-29 | 1996-02-16 | Toshiba Corp | Electrifying device and image forming device provided therewith |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2777957A (en) * | 1950-04-06 | 1957-01-15 | Haloid Co | Corona discharge device |
US3527941A (en) * | 1968-07-22 | 1970-09-08 | Eastman Kodak Co | Charging system for placing a uniform charge on a photoconductive surface |
JPS5110785B1 (en) * | 1971-01-16 | 1976-04-06 |
-
1972
- 1972-10-16 CH CH1508172A patent/CH549823A/en not_active IP Right Cessation
-
1973
- 1973-08-06 DE DE19732339745 patent/DE2339745B2/en not_active Withdrawn
- 1973-09-17 US US398134A patent/US3900776A/en not_active Expired - Lifetime
- 1973-09-20 CA CA181,481A patent/CA995297A/en not_active Expired
- 1973-10-15 GB GB4795473A patent/GB1453474A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3900776A (en) | 1975-08-19 |
DE2339745B2 (en) | 1976-01-29 |
CA995297A (en) | 1976-08-17 |
DE2339745A1 (en) | 1974-05-02 |
CH549823A (en) | 1974-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |