EP0824725A1 - Cleaning device for the photoconductor drum of a printer or copier - Google Patents
Cleaning device for the photoconductor drum of a printer or copierInfo
- Publication number
- EP0824725A1 EP0824725A1 EP96913452A EP96913452A EP0824725A1 EP 0824725 A1 EP0824725 A1 EP 0824725A1 EP 96913452 A EP96913452 A EP 96913452A EP 96913452 A EP96913452 A EP 96913452A EP 0824725 A1 EP0824725 A1 EP 0824725A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning device
- photoconductor drum
- cleaning
- film
- photoconductor
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
Definitions
- the invention relates to a cleaning device for the photoconductor drum of a printing or copying machine.
- All of these cleaning devices serve to remove residual toner from the surface of the photoconductor drum.
- Cleaning brushes with denser and thicker fibers can improve the cleaning of the drum surface, but do not remove the adhesive residues.
- the object of the invention is to provide a low-wear and functionally reliable cleaning device for the photoconductor drum of a printing or copying machine, which is suitable for cleaning the photoconductor drum both from adhering toner dust and also removing adhesive residues without damaging the photoconductor drum .
- a thin film cleans the photoconductor drum from adhering adhesive residues seen in the direction of movement of the photoconductor drum is arranged behind the cleaning brush and the discharge lamp.
- the cleaning film is pressed against the direction of rotation against the photoconductor layer so that it lies relatively flat.
- the sharp-edged front edge scrapes off the particles adhering to the layer, in particular those which, because of their size, would interfere with the transfer printing process and thus with the printed image. Due to the selected arrangement, the pressure force is relatively low, so that the wear of the film and the effect on the photoconductor layer are very low.
- the main purpose of the film is not the cleaning of the photoconductor drum from toner, this is already done by the cleaning brush, but only the cleaning of occasionally adhering larger particles, a low pressure force is sufficient.
- no special additives are required in the toner, as are necessary when using cleaning blades instead of cleaning brushes.
- the contact force should be between 0.1 and IN per 100 mm.
- the angle between the film and the photoconductor layer should be less than 25 °.
- a film made of polyethylene terephthalate (polyester) with a thickness of 0.05 to 0.2 mm is particularly advantageous.
- Other plastic materials e.g. from the groups of polyamides, polyimides and polyurethane can be used, provided they meet the requirements mentioned.
- the film can be interchangeably arranged in a clamping device.
- Figure 1 is a schematic sectional view of the order
- FIG. 2 shows a schematic sectional illustration of a stripping element designed as a cleaning film, which is interchangeably arranged in a clamping device.
- An electrophotographic printing device for printing on continuous paper which is shown only schematically here, contains a photoconductor drum 10 with an inorganic Se photoconductor arranged thereon as an intermediate carrier.
- the various units necessary for the electrophotographic process are grouped around the photoconductor drum 10. These consist of a charging corotron 11, an exposure device 12 in the form of an LED comb, a developer station 13, a transfer printing station 14, a corotron 15, a cleaning brush 16 rotating counter to the direction of rotation of the photoconductor drum 10, with an associated suction device (not shown here), a discharge lamp 17 and a stripping element 18 attached to the charging co-rotron 11 in the form of a cleaning film.
- the direction of movement of the photoconductor drum 10 and cleaning brush 16 is marked by arrows.
- the photo conductor drum 10 is uniformly charged with the aid of the charging corotron 11 and then discharged depending on the character via the exposure device 12.
- the charge image thus generated is then colored by the developer station 13 with toner based on styrene acrylate or polyester and the toner image thus generated is transferred to continuous paper in the transfer printing station 14.
- additional charge is sprayed on via the corotron 15 in order to loosen the electrostatic bond of the untransferred toner particles to the surface of the photoconductor drum.
- the residual toner particles are then removed via the rotating cleaning brush 16, which acts as the main cleaning device.
- the entire photoconductor surface is then discharged using the discharge lamp 17. Larger particles or sticky substances adhering to the surface of the photoconductor drum are then stripped off with the aid of the cleaning film 18 and the electrophotographic process begins again.
- the stripping device consists of a thin plastic film made of polyethylene terephthalate (polyester) with a thickness of 0.05 to 0.2 mm with a sharp-edged stripping edge 19 which is arranged in the opposite direction to the running direction of the photoconductor drum 10 is that the angle ⁇ between the film 18 and the surface of the photo conductor drum 10 is less than 25 degrees.
- the cleaning film 18 lies on the photoconductor drum 10 with a contact force in the order of magnitude between 0.1 and IN per 100 mm.
- the material used is wear-resistant according to an edge tear force according to DIN 40634 greater than 100N.
- the cleaning film 18 is fastened on one side in a clamping device.
- This consists of a leaf spring 21 arranged within a holder 20 with an associated terminal strip 22.
- the holder is arranged on the charging corotron housing 23 of the charging corotron 11.
- the charging corotron 11 is designed as an insert which can be removed from the device in a simple manner. This offers favorable conditions for the exchange of the film after a defined mileage.
- the holding mechanism for the film can be designed to be pivotable.
- the design of such a pivoting mechanism is familiar to the person skilled in the art.
- the design of a mechanism for the oscillating movement of a stripping element is described in EP-Bl 0 464 032.
- polyester is used as the material for the cleaning film 18.
- Other plastic materials e.g. from the groups of polyamides, polyimides and polyurethane can be used, provided they have the required wear resistance and are free of substances that react with the styrene-acrylate or polyester-based toner used or that impair the properties of the inorganic photoconductor.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19516210 | 1995-05-03 | ||
DE19516210 | 1995-05-03 | ||
PCT/DE1996/000759 WO1996035151A1 (en) | 1995-05-03 | 1996-05-02 | Cleaning device for the photoconductor drum of a printer or copier |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0824725A1 true EP0824725A1 (en) | 1998-02-25 |
EP0824725B1 EP0824725B1 (en) | 1998-09-16 |
Family
ID=7760964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96913452A Expired - Lifetime EP0824725B1 (en) | 1995-05-03 | 1996-05-02 | Cleaning device for the photoconductor drum of a printer or copier |
Country Status (4)
Country | Link |
---|---|
US (1) | US5832355A (en) |
EP (1) | EP0824725B1 (en) |
DE (1) | DE59600583D1 (en) |
WO (1) | WO1996035151A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125326B4 (en) | 2001-05-23 | 2004-03-18 | OCé PRINTING SYSTEMS GMBH | Device for removing a coating adhering to an intermediate carrier in an electrographic printing or copying machine |
US7319841B2 (en) * | 2005-09-22 | 2008-01-15 | Infoprint Solutions Company, Llc | Apparatus and method for cleaning residual toner with a scraper blade periodically held in contact with a toner transfer surface |
DE102009032611A1 (en) | 2009-07-10 | 2011-02-17 | OCé PRINTING SYSTEMS GMBH | Device for guiding printing substrate sheet in printer or copier, has guide element over which printing substrate sheet is guided during transport in transport direction |
WO2011127469A1 (en) | 2010-04-09 | 2011-10-13 | Medrad, Inc. | Radiopharmaceutical concentration measurement system and method |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7312451A (en) * | 1972-09-16 | 1974-02-25 | ||
JPS6234182A (en) * | 1985-08-08 | 1987-02-14 | Minolta Camera Co Ltd | Method for restoring surface of photosensitive body |
EP0320812B1 (en) * | 1987-12-18 | 1993-09-15 | Fujitsu Limited | Cleaning unit for cleaning the recording medium of an electrophotographic apparatus |
EP0464032B1 (en) * | 1989-03-21 | 1992-12-02 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Device for cleaning the transfer carrier of an electrophotographic printing or copying machine |
US4989047A (en) * | 1989-12-11 | 1991-01-29 | Xerox Corporation | Cleaning apparatus for the reduction of agglomeration-caused spotting |
US5138395A (en) * | 1990-12-17 | 1992-08-11 | Xerox Corporation | Internally lubricated cleaning blade |
JPH05216378A (en) * | 1992-02-04 | 1993-08-27 | Fuji Xerox Co Ltd | Cleaning device for image forming device |
JPH06118858A (en) * | 1992-10-07 | 1994-04-28 | Yokohama Rubber Co Ltd:The | Cleaning blade |
US5339149A (en) * | 1993-08-23 | 1994-08-16 | Xerox Corporation | Non-stick spots blade |
US5442422A (en) * | 1994-06-08 | 1995-08-15 | Xerox Corporation | Toner contamination seal device for cleaner |
-
1996
- 1996-05-02 WO PCT/DE1996/000759 patent/WO1996035151A1/en active IP Right Grant
- 1996-05-02 EP EP96913452A patent/EP0824725B1/en not_active Expired - Lifetime
- 1996-05-02 DE DE59600583T patent/DE59600583D1/en not_active Expired - Lifetime
- 1996-05-02 US US08/952,041 patent/US5832355A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9635151A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59600583D1 (en) | 1998-10-22 |
EP0824725B1 (en) | 1998-09-16 |
US5832355A (en) | 1998-11-03 |
WO1996035151A1 (en) | 1996-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3338989C3 (en) | Duplicator in which toner remaining on a heated intermediate transfer element can be removed by means of a cleaning roller | |
DE69015698T2 (en) | Recorder. | |
DE19745796B4 (en) | An image forming apparatus with a roller type charging system | |
EP0092107B1 (en) | Electrophotographic copying process and apparatus for removing the developer liquid from a photoconductor surface | |
DE2932514C2 (en) | ||
DE3301796C2 (en) | Device for removing the developer from a photoconductive surface | |
DE2032370A1 (en) | Device for removing powder material from a surface | |
DE69013399T2 (en) | Recorder. | |
DE2954323C2 (en) | Magnetic brush developing device for developing an electrostatic charge image | |
DE3029254A1 (en) | ELECTROPHOTOGRAPHIC COPIER | |
DE3305143A1 (en) | CLEANING UNIT FOR AN ELECTROSTATIC COPIER | |
DE2423414A1 (en) | DEVELOPER CONVEYOR | |
DE4203596C2 (en) | Cleaning device for an electrophotographic dry copier | |
DE2716423C2 (en) | Cleaning device for electrophotographic apparatus | |
DE69112281T2 (en) | Recording device. | |
DE3317283C2 (en) | ||
DE69214232T2 (en) | Cleaning device | |
DE3347214A1 (en) | DEVELOPMENT DEVICE | |
DE69413778T2 (en) | Method and apparatus for lubricating a cleaning blade | |
DE2528862C2 (en) | Device for removing excess developer liquid from a recording medium in an electrophotographic copier | |
DE69409754T2 (en) | Process and device for surface cleaning | |
DE69208274T2 (en) | Imaging device | |
DE68908865T2 (en) | CLEANER WITH AERODYNAMIC PROFILES. | |
DE69014411T2 (en) | Recorder. | |
EP0824725A1 (en) | Cleaning device for the photoconductor drum of a printer or copier |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17P | Request for examination filed |
Effective date: 19970929 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE FR GB |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19980227 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE FR GB |
|
REF | Corresponds to: |
Ref document number: 59600583 Country of ref document: DE Date of ref document: 19981022 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981117 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090519 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090603 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090528 Year of fee payment: 14 |
|
BERE | Be: lapsed |
Owner name: *OCE PRINTING SYSTEMS G.M.B.H. Effective date: 20100531 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100502 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100502 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20120726 Year of fee payment: 17 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20131203 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59600583 Country of ref document: DE Effective date: 20131203 |