GB1474452A - Electrostatic printing machine with self-cleaning corona genera ting device - Google Patents
Electrostatic printing machine with self-cleaning corona genera ting deviceInfo
- Publication number
- GB1474452A GB1474452A GB4052574A GB4052574A GB1474452A GB 1474452 A GB1474452 A GB 1474452A GB 4052574 A GB4052574 A GB 4052574A GB 4052574 A GB4052574 A GB 4052574A GB 1474452 A GB1474452 A GB 1474452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- corona
- follower
- machine
- pad
- switch
- 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
- G03G15/0258—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence
-
- 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
1474452 Corona charging apparatus XEROX CORP 17 Sept 1974 [24 Sept 1973] 40525/74 Heading H1X A corona generating device comprises a corona wire 46, a generally U-shaped shield 44 around the corona wire, a cleaning pad 48 in contact with the corona wire and adapted to be moved along the wire to clean the same, and means responsive to an electical input signal for moving the pad along the corona wire. As shown the said means comprise an electric motor 52 driving a double helixs crew 54 carrying a follower 56 connected to the pad 48 which also cleans the inner surface 50 of the shield 44. Three of the corona devices are incorporated in an electorstatic printing machine (Fig. 1, not shown). When the follower 56 is at the left-hand end of the screw 54 it engages a roller 58 to open a switch 60. On the occurrence of a predetermined machine event, e.g. the end of a copy run, a signal from the machine logic 62 actuates a machine memory timeout 64 to effect various shutdown operations within the machine and also operates a relay 66 to close a switch 51 and start the motor 52. The follower 56 moves from the end position to close switch 60 so that the motor is driven until the follower again opens switch 60 at the end of a cleaning cycle which may comprise one or several double traverses by the pad 48.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US400077A US3870883A (en) | 1973-09-24 | 1973-09-24 | Electrostatic printing machine with self-cleaning coronal generating device |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1474452A true GB1474452A (en) | 1977-05-25 |
Family
ID=23582142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4052574A Expired GB1474452A (en) | 1973-09-24 | 1974-09-17 | Electrostatic printing machine with self-cleaning corona genera ting device |
Country Status (2)
Country | Link |
---|---|
US (1) | US3870883A (en) |
GB (1) | GB1474452A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4073587A (en) * | 1975-10-24 | 1978-02-14 | Rank Xerox Ltd. | Corotron apparatus |
US4038546A (en) * | 1976-05-03 | 1977-07-26 | Xerox Corporation | Cleaning apparatus for a corona generating device |
JPS58135752U (en) * | 1982-03-05 | 1983-09-12 | ティーディーケイ株式会社 | Charging device for electrostatic copying machines |
US4566777A (en) * | 1982-08-23 | 1986-01-28 | Canon Kabushiki Kaisha | Process kit for image forming apparatus |
US4885466A (en) * | 1987-09-25 | 1989-12-05 | Ricoh Company, Ltd. | Corona wire cleaning device utilizing a position detection system |
JP2577409B2 (en) * | 1987-11-30 | 1997-01-29 | 株式会社東芝 | Electronic copier |
US5012093A (en) * | 1988-08-29 | 1991-04-30 | Minolta Camera Co., Ltd. | Cleaning device for wire electrode of corona discharger |
JP2974842B2 (en) * | 1992-01-23 | 1999-11-10 | シャープ株式会社 | Process control stabilizer |
US5485255A (en) * | 1994-08-31 | 1996-01-16 | Eastman Kodak Company | Automatic cleaning mechanism for a corona charger using cleaning pad |
JP3361071B2 (en) * | 1999-02-04 | 2003-01-07 | 富士通株式会社 | Automatic charging device cleaning method and image forming apparatus |
US7583911B2 (en) * | 2007-02-20 | 2009-09-01 | Xerox Corporation | Corona charging device cleaning apparatus and method of cleaning a corona charging device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2791949A (en) * | 1956-02-01 | 1957-05-14 | Haloid Co | Xerographic copying device |
US3496352A (en) * | 1967-06-05 | 1970-02-17 | Xerox Corp | Self-cleaning corona generating apparatus |
-
1973
- 1973-09-24 US US400077A patent/US3870883A/en not_active Expired - Lifetime
-
1974
- 1974-09-17 GB GB4052574A patent/GB1474452A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3870883A (en) | 1975-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |