GB1496473A - Electrophotographic copier - Google Patents
Electrophotographic copierInfo
- Publication number
- GB1496473A GB1496473A GB14642/76A GB1464276A GB1496473A GB 1496473 A GB1496473 A GB 1496473A GB 14642/76 A GB14642/76 A GB 14642/76A GB 1464276 A GB1464276 A GB 1464276A GB 1496473 A GB1496473 A GB 1496473A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- photo
- conductor
- corona discharge
- reduces
- 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
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
- G03G15/30—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
- G03G15/307—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum with more than one photoconductor revolution for each copying cycle
-
- 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)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
Abstract
1496473 Copying machine INTERNATIONAL BUSINESS MACHINES CORP 9 April 1976 [27 May 1975] 14642/76 Heading G2H In an electro-photographic copier of the two cycle kind in which an image developed on a photo-conductor 12 is transferred to a substrate, a single corona discharge device 18 acts alternately as a transfer and a pre-charge device and a further single corona discharge device 22 acts alternately as a pre-clean and a final charge device, the charge deposited on the photo-conductor 12 by the device 22 being controlled such that, in an imaging operation, it reduces a pre-charge formed on the photoconductor by the device 18 to a level suitable for exposure to form a latent image, and, in a cleaning operation, it reduces charges remaining on the photo-conductor after a transfer operation at the device 18 location to substantially zero. Device 18 comprises a corotron, whereas device 22 comprises a scorotron the control grid 24 of which is switched to one of two controlled voltage sources according to which of its two alternative functions is required in the particular cycle in which it is operating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58064375A | 1975-05-27 | 1975-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1496473A true GB1496473A (en) | 1977-12-30 |
Family
ID=24321916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14642/76A Expired GB1496473A (en) | 1975-05-27 | 1976-04-09 | Electrophotographic copier |
Country Status (14)
| Country | Link |
|---|---|
| JP (2) | JPS51144631A (en) |
| AU (1) | AU500168B2 (en) |
| BE (1) | BE840962A (en) |
| BR (1) | BR7603386A (en) |
| CA (1) | CA1092639A (en) |
| CH (1) | CH591715A5 (en) |
| DE (1) | DE2611499C3 (en) |
| ES (1) | ES448216A1 (en) |
| FR (1) | FR2312805A1 (en) |
| GB (1) | GB1496473A (en) |
| IT (1) | IT1064166B (en) |
| NL (1) | NL7604315A (en) |
| SE (1) | SE418540B (en) |
| SU (1) | SU619124A3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1535398A (en) * | 1975-06-13 | 1978-12-13 | Tokyo Shibaura Electric Co | Electrostatic copying apparatus |
| US4133610A (en) * | 1977-12-30 | 1979-01-09 | International Business Machines Corporation | Optimum preclean corona current for eliminating the accumulation of contaminants from developers |
| JPS58193571A (en) * | 1982-05-07 | 1983-11-11 | Fuji Xerox Co Ltd | Destaticizer of copying machine |
| JPH0642115B2 (en) * | 1984-06-18 | 1994-06-01 | 富士ゼロックス株式会社 | Cleaning device for electrophotographic copying machine |
-
1976
- 1976-03-18 DE DE2611499A patent/DE2611499C3/en not_active Expired
- 1976-03-23 IT IT21447/76A patent/IT1064166B/en active
- 1976-04-01 FR FR7610160A patent/FR2312805A1/en active Granted
- 1976-04-09 GB GB14642/76A patent/GB1496473A/en not_active Expired
- 1976-04-13 CA CA250,130A patent/CA1092639A/en not_active Expired
- 1976-04-21 BE BE166335A patent/BE840962A/en not_active IP Right Cessation
- 1976-04-23 NL NL7604315A patent/NL7604315A/en not_active Application Discontinuation
- 1976-04-28 CH CH532176A patent/CH591715A5/xx not_active IP Right Cessation
- 1976-04-30 JP JP51048715A patent/JPS51144631A/en active Granted
- 1976-05-05 SE SE7605133A patent/SE418540B/en unknown
- 1976-05-18 SU SU762359443A patent/SU619124A3/en active
- 1976-05-25 ES ES448216A patent/ES448216A1/en not_active Expired
- 1976-05-27 BR BR3386/76A patent/BR7603386A/en unknown
- 1976-05-27 AU AU14379/76A patent/AU500168B2/en not_active Expired
-
1979
- 1979-06-22 JP JP7828679A patent/JPS5522788A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE7605133L (en) | 1976-11-28 |
| DE2611499C3 (en) | 1980-06-04 |
| JPS556230B2 (en) | 1980-02-14 |
| CA1092639A (en) | 1980-12-30 |
| AU500168B2 (en) | 1979-05-10 |
| CH591715A5 (en) | 1977-09-30 |
| BE840962A (en) | 1976-08-16 |
| DE2611499B2 (en) | 1979-09-20 |
| SE418540B (en) | 1981-06-09 |
| DE2611499A1 (en) | 1976-12-16 |
| SU619124A3 (en) | 1978-08-05 |
| AU1437976A (en) | 1977-12-01 |
| JPS51144631A (en) | 1976-12-11 |
| JPS5522788A (en) | 1980-02-18 |
| BR7603386A (en) | 1976-12-21 |
| ES448216A1 (en) | 1977-07-01 |
| NL7604315A (en) | 1976-11-30 |
| FR2312805B1 (en) | 1978-11-17 |
| FR2312805A1 (en) | 1976-12-24 |
| IT1064166B (en) | 1985-02-18 |
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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 |