DE102009037735A1 - Cleaning device for a developer roller in an electrographic printer or copier - Google Patents
Cleaning device for a developer roller in an electrographic printer or copier Download PDFInfo
- Publication number
- DE102009037735A1 DE102009037735A1 DE102009037735A DE102009037735A DE102009037735A1 DE 102009037735 A1 DE102009037735 A1 DE 102009037735A1 DE 102009037735 A DE102009037735 A DE 102009037735A DE 102009037735 A DE102009037735 A DE 102009037735A DE 102009037735 A1 DE102009037735 A1 DE 102009037735A1
- Authority
- DE
- Germany
- Prior art keywords
- roller
- charging
- developer
- cleaning
- residual toner
- 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.)
- Withdrawn
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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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0815—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer handling means after the developing zone and before the supply, e.g. developer recovering roller
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/0602—Developer
- G03G2215/0604—Developer solid type
- G03G2215/0607—Developer solid type two-component
Abstract
Die Reinigungseinrichtung weist eine Reinigungswalze auf. Benachbart der Reinigungswalze sind vorzugsweise zwei Ladeelektroden angeordnet, die die Oberfläche der Reinigungswalze elektrisch so aufladen, dass elektrische Feldkräfte auf den auf der Entwicklerwalze nach der Entwicklung verbliebenen Resttoner ausgeübt werden. Der von der Reinigungswalze übernommene Resttoner wird an den Ladeelektroden vorbeigeführt. Um Ablagerungen von Resttoner an den Ladeelektroden wegen des an der Ladeelektrode liegenden Ladepotentials zu verhindern, liegen die Ladeelektroden derart benachbart zur Reinigungswalze, dass der Resttoner auf der Reinigungswalze an den Ladeelektroden entlang streift und dort haftenden Toner abstreift.The cleaning device has a cleaning roller. Adjacent to the cleaning roller are preferably two charging electrodes which electrically charge the surface of the cleaning roller in such a way that electrical field forces are exerted on the residual toner remaining on the developer roller after development. The residual toner taken over by the cleaning roller is guided past the charging electrodes. In order to prevent deposits of residual toner on the charging electrodes due to the charging potential present on the charging electrode, the charging electrodes are located adjacent to the cleaning roller in such a way that the residual toner on the cleaning roller brushes along the charging electrodes and strips off adhering toner.
Description
Elektrografische
Druck- oder Kopiergeräte sind bekannt, siehe z. B.
Zur
Entwicklung der Ladungsbilder kann eine Entwicklerstation verwendet
werden, die entsprechend
Diese ist benachbart der ersten Magnetwalze angeordnet und übernimmt von dieser Entwicklergemisch, bildet daraus einen Gemischteppich und führt diesen an der Entwicklerwalze vorbei, wobei der Resttoner durch den Gemischteppich von der Entwicklerwalze abgerieben wird. Der Reinigungsvorgang wird durch ein zwischen Reinigungswalze und Entwicklerwalze bestehendes elektrisches Feld unterstützt. Von der Reinigungswalze fällt anschließend das Entwicklergemisch mit dem Rettoner in den Entwicklervorrat auf Grund der Polung der Magnete und/oder unter Verwendung einer Rakel bzw. unter Verwendung einer weiteren Magnetanordnung, an der sich eine Entwicklergemischbürste ausbildet, ab.These is disposed adjacent to the first magnetic roller and takes over from this developer mix, makes it a mixed carpet and passes this past the developer roller with the residual toner is rubbed off the developer roller by the mixture carpet. The cleaning process is performed by a between cleaning roller and developer roller existing electric field supported. From the cleaning roller then falls the developer mix with the Rettoner in the developer stock due to the polarity of the magnets and / or using a squeegee or using another Magnet assembly, which is a developer mixed brush trains, off.
Bei der bekannten Entwicklerstation werden somit an die Entwicklerwalze und Reinigungswalze elektrische Potentiale angelegt, die den Transport des Entwicklergemischs bzw. des Toners durch elektrische Feldkräfte unterstützen. Diese elektrischen Potentiale müssen den Walzen zugeführt werden. Die Kontaktierung erfolgt dabei z. B. über Schleifkontakte, die an einer elektrisch leitfähigen Achse der Walze anliegen. Bei ungenügender Leitfähigkeit z. B. hervorgerufen durch Tonerablagerung auf der Walze versagt diese Lösung. Die innenseitige Kontaktierung von Walzen zur definierten Einstellung von deren Oberflächenpotential erfordert leitfähige Oberflächen. Dadurch ist die Auswahl an Materialien zur Herstellung von z. B. Einfärbewalzen und Reinigungswalzen stark eingeschränkt.at the known developer station are thus to the developer roller and cleaning roller applied electrical potentials, which facilitate the transport of Developer mixture or the toner by electric field forces support. These electrical potentials must fed to the rollers. The contacting takes place while z. B. via sliding contacts, connected to an electrical abut the conductive axis of the roller. With insufficient Conductivity z. B. caused by toner deposition on the roller fails this solution. The inside contacting of rollers for defined adjustment of their surface potential requires conductive surfaces. This is the selection of materials for the production of z. B. inking rollers and cleaning rollers severely limited.
Das von der Erfindung zu lösende Problem besteht darin, eine Reinigungseinrichtung mit einer Reinigungswalze für eine Entwicklerwalze anzugeben, bei der eine gleichmäßige Aufladung der Oberfläche der Reinigungswalze erreicht wird.The problem to be solved by the invention is a Cleaning device with a cleaning roller for a Specify developer roller, in which a uniform Charging the surface of the cleaning roller is achieved.
Das
Problem wird gemäß den Merkmalen des Anspruchs
1 gelöst.The
Problem is solved according to the features of the
Die Reinigungseinrichtung weist eine Reinigungswalze mit einer elektrisch leitenden rotierenden Walzenhülle auf, wobei die Walzenhülle auf der Oberfläche mit einer elektrisch isolierenden Schicht versehen ist. Benachbart der Reinigungswalze ist ein Auflademittel vorgesehen, das mindestens eine an einem elektrischen Ladepotential liegende Ladeelektrode aufweist, die die Walzenhülle der Reinigungswalze elektrisch so auflädt, dass elektrische Feldkräfte auf den Resttoner auf der Entwicklerwalze ausgeübt werden. Der von der Entwicklerwalze übernommene Resttoner wird dazu durch die Reinigungswalze an der Ladeelektrode vorbeigeführt, diese lädt die Oberfläche der Reinigungswalze über den Resttoner auf. Um Ablagerungen von Resttoner an der Ladeelektrode wegen des an der Ladeelektrode liegenden Ladepotentials zu verhindern, liegt die Ladeelektrode derart zur Oberfläche der Reinigungswalze, dass der Resttoner an der Ladeelektrode entlang streift und dort haftenden Toner abstreift.The Cleaning device has a cleaning roller with an electric conductive rotating roll shell, wherein the roll shell provided on the surface with an electrically insulating layer is. Adjacent to the cleaning roller is provided a charging means, the at least one lying at an electrical charging potential Charging electrode having the roller shell of the cleaning roller electrically charged so that electric field forces be applied to the residual toner on the developer roller. The residual toner taken over by the developer roller becomes to pass through the cleaning roller to the charging electrode, this loads the surface of the cleaning roller over the residual toner on. To deposits of residual toner on the charging electrode because of the charging potential at the charging electrode, the charging electrode is in such a way to the surface of the cleaning roller, that the residual toner strikes along the charging electrode and there stripping off adhesive toner.
Vorteilhaft
ist, wenn bei der Reinigung der Entwicklerwalze entsprechend
Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.further developments The invention will become apparent from the dependent claims.
Vorteilhaft ist, wenn die Ladeelektrode als Elektrodenkamm realisiert ist. Dadurch wird verhindert, dass sich Entwicklergemisch am Elektrodenkamm anhäufen kann, wenn der Abstand Ladeelektrode zu Walzenhülle nicht derart eingestellt ist, dass das Entwicklergemisch vollständig an der Ladeelektrode vorbei transportiert wird.Advantageous is when the charging electrode is realized as an electrode comb. Thereby prevents developer mixture from accumulating on the electrode comb can, if the distance loading electrode to roll shell is not is set so that the developer mix completely is transported past the charging electrode.
Zweckmäßig ist es weiterhin, wenn das Auflademittel mindestens zwei Elektrodenkämme hintereinander aufweist, die abwechselnd an elektrisches Ladepotential gelegt werden. Dann wird auch bei längerem Druckbetrieb verhindert, dass sich Toner an den Ladeelektroden, insbesondere an den Zähnen der Elektrodenkämme anlagern kann. Hier lädt die eine Ladeelektrode die Reinigungswalze auf, während die andere Ladeelektrode von Toner gereinigt wird.expedient it is still, if the charging means at least two electrode combs has one behind the other, alternately to electrical charging potential be placed. Then it will work even with prolonged printing prevents toner on the charging electrodes, in particular can attach to the teeth of the electrode combs. Here, a charging electrode charges the cleaning roller, while the other charging electrode is being cleaned of toner.
An Hand von Ausführungsbeispielen, die in den Figuren dargestellt sind, wird die Erfindung weiter erläutert.At Hand of embodiments shown in the figures are, the invention will be further explained.
Es zeigenIt demonstrate
Die
Einfärbewalze
Die
Aufladung des Entwicklergemischs
Das
Auflademittel
An
Hand der
Das
Auflademittel
Aus
Unterschiedliche
Realisierungen der Ladeelektroden
Um
ein Abfließen der Ladung zu vermeiden, ist es zweckmäßig,
dass die Oberfläche der Walzenhülle
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- ESIT
- Entwicklerstationdeveloper station
- SPSP
- Spannungsdiagrammvoltage diagram
- 11
- EntwicklervorratDevelopers stock
- 22
- EntwicklerbaggerDevelopers excavators
- 33
- Einfärbewalzeinking
- 44
- Entwicklergemischdeveloper mixture
- 55
- Trägercarrier
- 66
- Tonertoner
- 77
- Walzenhüllerolling shell
- 88th
- Magnetstatormagnetic stator
- 99
- Magnetmagnet
- 1010
- Entwicklerwalzedeveloper roller
- 1111
- LadungsbildträgerCharge image carrier
- 1212
- ResttonerWaste toner
- 1313
- Reinigungswalzecleaning roller
- 1414
- Magnetstatormagnetic stator
- 1515
- Magnetmagnet
- 1616
- Entwicklergemischdeveloper mixture
- 1717
- Reinigungswalzecleaning roller
- 1818
- Entwicklerwalzedeveloper roller
- 1919
- Resttoner-EntwicklergemischWaste toner developer mix
- 2020
- Magnetstatormagnetic stator
- 2121
- Walzenhüllerolling shell
- 2222
- Auflademittelcharging means
- 2323
- Ladeelektrodecharging electrode
- 2424
- Ladeelektrodecharging electrode
- 2525
- Umschalterswitch
- 2626
- Elektrodenkammelectrode comb
- 2727
- Zähne des Elektrodenkammteeth of the electrode comb
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - US 6246856 B1 [0001, 0001] - US 6246856 B1 [0001, 0001]
- - DE 102004059532 A1 [0001] DE 102004059532 A1 [0001]
- - WO 03/036393 A2 [0002, 0020, 0020, 0023] WO 03/036393 A2 [0002, 0020, 0020, 0023]
- - US 2005/0036806 A1 [0002, 0008, 0020, 0023] US 2005/0036806 A1 [0002, 0008, 0020, 0023]
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009037735A DE102009037735A1 (en) | 2009-08-17 | 2009-08-17 | Cleaning device for a developer roller in an electrographic printer or copier |
PCT/EP2010/061891 WO2011020813A1 (en) | 2009-08-17 | 2010-08-16 | Cleaning device for a developer roller in an electrographic printing or copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009037735A DE102009037735A1 (en) | 2009-08-17 | 2009-08-17 | Cleaning device for a developer roller in an electrographic printer or copier |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009037735A1 true DE102009037735A1 (en) | 2011-02-24 |
Family
ID=42985330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009037735A Withdrawn DE102009037735A1 (en) | 2009-08-17 | 2009-08-17 | Cleaning device for a developer roller in an electrographic printer or copier |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102009037735A1 (en) |
WO (1) | WO2011020813A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6246856B1 (en) | 1997-03-03 | 2001-06-12 | OCé PRINTING SYSTEMS GMBH | Printer and copier device and method for performance-adapted, monochrome and/or chromatic, single-sided or both-sided printing of a recording medium |
WO2003036393A2 (en) | 2001-10-26 | 2003-05-01 | Oce Printing Systems Gmbh | Method and device for cleaning support elements in printers or copiers by means of magnetic fields |
DE102004059532A1 (en) | 2004-12-09 | 2006-06-14 | OCé PRINTING SYSTEMS GMBH | Electrographic printing or copying device and method for operating the printing or copying device |
DE102007019311A1 (en) * | 2007-04-24 | 2008-11-06 | OCé PRINTING SYSTEMS GMBH | Carrier surface toner particle cleaning device for e.g. printer, has field producing device producing electrical field, where deposited toner particles are transported from cleaning zone during movement of cleaning element |
DE102007035994A1 (en) * | 2007-08-01 | 2009-02-05 | OCé PRINTING SYSTEMS GMBH | Apparatus and method for removing toner deposits on the surface of a cleaning element |
DE102007060021A1 (en) * | 2007-12-13 | 2009-06-25 | OCé PRINTING SYSTEMS GMBH | An arrangement for removing electrically charged toner from the surface of a toner transporting toner transport roller in an electrographic printer or copier |
DE102008005132A1 (en) * | 2008-01-18 | 2009-07-30 | OCé PRINTING SYSTEMS GMBH | Arrangement for displacement of electrically charged toner to upper surface of toner transporting roller, has electrical graphic printing or photocopying apparatus, and roller lying at electrical potential |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4142165A (en) * | 1976-03-25 | 1979-02-27 | Ricoh Company, Ltd. | Electrostatic copying machine comprising improved magnetic brush developing-cleaning unit |
DE102004030863A1 (en) * | 2004-06-25 | 2006-01-19 | OCé PRINTING SYSTEMS GMBH | A method of treating the surface of a toner-transporting roller in an electrographic printing or copying device |
-
2009
- 2009-08-17 DE DE102009037735A patent/DE102009037735A1/en not_active Withdrawn
-
2010
- 2010-08-16 WO PCT/EP2010/061891 patent/WO2011020813A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6246856B1 (en) | 1997-03-03 | 2001-06-12 | OCé PRINTING SYSTEMS GMBH | Printer and copier device and method for performance-adapted, monochrome and/or chromatic, single-sided or both-sided printing of a recording medium |
WO2003036393A2 (en) | 2001-10-26 | 2003-05-01 | Oce Printing Systems Gmbh | Method and device for cleaning support elements in printers or copiers by means of magnetic fields |
DE10152892A1 (en) * | 2001-10-26 | 2003-05-08 | Oce Printing Systems Gmbh | Method and device for cleaning carrier elements in printers or copiers using magnetic fields |
US20050036806A1 (en) | 2001-10-26 | 2005-02-17 | Uwe Hollig | Method and device for cleaning support elements in printers or copiers by means of magnetic fields |
DE102004059532A1 (en) | 2004-12-09 | 2006-06-14 | OCé PRINTING SYSTEMS GMBH | Electrographic printing or copying device and method for operating the printing or copying device |
DE102007019311A1 (en) * | 2007-04-24 | 2008-11-06 | OCé PRINTING SYSTEMS GMBH | Carrier surface toner particle cleaning device for e.g. printer, has field producing device producing electrical field, where deposited toner particles are transported from cleaning zone during movement of cleaning element |
DE102007035994A1 (en) * | 2007-08-01 | 2009-02-05 | OCé PRINTING SYSTEMS GMBH | Apparatus and method for removing toner deposits on the surface of a cleaning element |
DE102007060021A1 (en) * | 2007-12-13 | 2009-06-25 | OCé PRINTING SYSTEMS GMBH | An arrangement for removing electrically charged toner from the surface of a toner transporting toner transport roller in an electrographic printer or copier |
DE102008005132A1 (en) * | 2008-01-18 | 2009-07-30 | OCé PRINTING SYSTEMS GMBH | Arrangement for displacement of electrically charged toner to upper surface of toner transporting roller, has electrical graphic printing or photocopying apparatus, and roller lying at electrical potential |
Also Published As
Publication number | Publication date |
---|---|
WO2011020813A1 (en) | 2011-02-24 |
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Legal Events
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---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R016 | Response to examination communication | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20130425 |