DE102008004226A1 - Photosensitive layer loading mechanism for e.g. high-performance printer, has electrical shield partially surrounding electrode, where shield includes slot-shaped nozzle that supplies air flow directed to electrode - Google Patents
Photosensitive layer loading mechanism for e.g. high-performance printer, has electrical shield partially surrounding electrode, where shield includes slot-shaped nozzle that supplies air flow directed to electrode Download PDFInfo
- Publication number
- DE102008004226A1 DE102008004226A1 DE102008004226A DE102008004226A DE102008004226A1 DE 102008004226 A1 DE102008004226 A1 DE 102008004226A1 DE 102008004226 A DE102008004226 A DE 102008004226A DE 102008004226 A DE102008004226 A DE 102008004226A DE 102008004226 A1 DE102008004226 A1 DE 102008004226A1
- Authority
- DE
- Germany
- Prior art keywords
- electrode
- corona
- air flow
- photoconductor
- air
- 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
- 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
-
- 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
- G03G2215/02—Arrangements for laying down a uniform charge
- G03G2215/026—Arrangements for laying down a uniform charge by coronas
- G03G2215/027—Arrangements for laying down a uniform charge by coronas using wires
Abstract
Description
Die Erfindung betrifft eine Einrichtung zum Aufladen einer fotoempfindlichen Schicht eines Fotoleiters in einem Drucker oder Kopierer mit mindestens einer Koronaanordnung, umfassend eine lang gestreckte Elektrode zur Ausbildung eines elektrischen Feldes, und mit einer Vorrichtung zum Zuführen und zum Abführen eines Luftstroms. Ferner betrifft die Erfindung ein Verfahren zum Aufladen einer fotoempfindlichen Schicht.The The invention relates to a device for charging a photosensitive Layer of a photoconductor in a printer or copier with at least one Corona assembly comprising an elongated electrode for formation an electric field, and with a device for feeding and for discharging an airflow. Furthermore, the Invention A method of charging a photosensitive layer.
Aus
der
Aus
der
Aus
der
Aus
der
Es ist Aufgabe der Erfindung, eine Einrichtung und ein Verfahren zum Aufladen einer fotoempfindlichen Schicht eines Fotoleiters in einem Drucker oder Kopierer anzugeben, bei der bzw. bei dem eine gleichmäßige Aufladung der Schicht erfolgt und ein kleiner Bauraum erforderlich ist.It It is an object of the invention to provide a device and a method for Charging a photosensitive layer of a photoconductor in one Specify a printer or copier in which or at a uniform Charging the layer takes place and a small space required is.
Diese Aufgabe wird für eine Einrichtung durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.These Task is for an institution through the characteristics of Claim 1 solved. Advantageous developments are in specified in the dependent claims.
Gemäß der Erfindung hat die Abschirmung eine Doppelfunktion. Einerseits trägt sie durch ihre elektrische Funktion zur gerichteten Aufladung der fotoempfindlichen Schicht bei. Andererseits enthält sie eine schlitzförmige Düse, welche der Elektrode einen Luftstrom gerichtet zuführt. Aufgrund dieser Doppelfunktion wird eine gleichmäßige Korona erzeugt, die eine gleichmäßige, homogene Aufladung der fotoempfindlichen Schicht gewährleistet, wobei der notwendige Bauraum klein bleibt.According to the Invention, the shield has a dual function. On the one hand carries by their electrical function for directional charging of the photosensitive Layer at. On the other hand, it contains a slit-shaped Nozzle, which supplies the electrode with an air flow directed. Due to this dual function becomes a uniform Corona produces a uniform, homogeneous Ensures charging of the photosensitive layer, the necessary space remains small.
Gemäß einem bevorzugten Ausführungsbeispiel ist der Luftstrom unter einem Winkel von 30 bis 60°, vorzugsweise 40 bis 50°, zur Normalen der Oberfläche des Fotoleiters der Elektrode zugeführt. Auf diese Weise wird eine geringe Verwirbelung des Luftstroms erreicht, so dass die Ausbildung der Korona sehr gleichmäßig ist, was zu einer gleichmäßigen Aufladung der fotoempfindlichen Schicht führt. Geringe Schwankungen in der Bauteilegeometrie, beispielsweise die Breite der schlitzförmigen Düse und Ausrichtfehler, führen nicht zu Schwankungen in der Luftströmung um die Elektrode herum. Vielmehr kann sich eine laminare Strömung um die Elektrode herum ausbilden, welche zu einer optimalen Belüftung und zur Ausbildung der gleichmäßigen Korona führt.According to one preferred embodiment, the air flow is below an angle of 30 to 60 °, preferably 40 to 50 °, to the normal of the surface of the photoconductor of the electrode fed. In this way, a slight turbulence reached the air flow, so that the formation of the corona very is even, resulting in a uniform charge the photosensitive layer leads. Slight fluctuations in the component geometry, for example, the width of the slot-shaped Nozzle and alignment error, do not lead to fluctuations in the air flow around the electrode. Rather, it can become form a laminar flow around the electrode, which for optimal ventilation and training the uniform corona leads.
Gemäß einem weiteren Aspekt der Erfindung wird ein Verfahren zum Aufladen einer fotoempfindlichen Schicht eines Fotoleiters angegeben.According to one Another aspect of the invention is a method for charging a Photosensitive layer of a photoconductor specified.
Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand schematischer Zeichnungen erläutert. Darin zeigtOne Embodiment of the invention will be described below schematic drawings explained. It shows
Den
Koronaanordnungen
Der
von der jeweiligen Düse
Die
verschiedenen Koronaanordnungen
Von
den mehreren Koronaanordnungen
Eine
kompakte Bauform der Einrichtung
Die beschriebene Einrichtung eignet sich gleichermaßen für positive und negative Aufladung der fotoempfindlichen Schicht eines Fotoleiters. Die Anzahl der verwendeten Koronaanordnungen kann verringert oder auch vergrößert werden. Der eingesetzte Vorfilter vergleichmäßigt und reinigt den einströmenden Luftstrom. Damit wird eine geringe Verschmutzung der Elektrode und eine hohe Lebensdauer der Elektrode erzielt. Die Elektroden werden mit Wechselspannung beaufschlagt, die typischerweise im Bereich von 14 kV (gemessen Spitze zu Spitze) liegt.The device described is suitable equally for positive and negative charging of the photosensitive layer of a photoconductor. The number of corona arrangements used can be reduced or increased. The pre-filter used evenens and cleans the incoming air flow. Thus, a low contamination of the electrode and a long life of the electrode is achieved. The electrodes are supplied with alternating voltage, which is typically in the range of 14 kV (measured peak to peak).
- 1010
- EinrichtungFacility
- 1212
- Fotoleiterphotoconductor
- 14, 16, 18, 20, 2214 16, 18, 20, 22
- KoronaanordnungenKorona arrangements
- 2424
- Elektrodeelectrode
- 2626
- Abschirmungshielding
- 2828
- Profilprofile
- 3030
- Düsejet
- 3232
- Vorfilterprefilter
- 3434
- Zuluftsupply air
- 3636
- LüfterFan
- 3838
- Raumroom
- 4040
- Absaugeinrichtungsuction
- 4242
- Absaugraumsuction chamber
- 4444
- Absaugöffnungsuction
- 4646
- Korona-GehäuseCorona housing
- 4848
- Lüftergehäusefan housing
- 5050
- Umgebungsluftambient air
- 5252
- Strömungslinien,Flow lines
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 4086650 A [0002] - US 4086650 A [0002]
- - US 4745282 A [0003] US 4745282 A [0003]
- - US 5170211 A [0004] - US 5170211 A [0004]
- - US 7174114 B2 [0005] - US 7174114 B2 [0005]
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008004226.9A DE102008004226B4 (en) | 2008-01-14 | 2008-01-14 | Apparatus and method for charging a photosensitive layer with directional aeration of the corona electrode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008004226.9A DE102008004226B4 (en) | 2008-01-14 | 2008-01-14 | Apparatus and method for charging a photosensitive layer with directional aeration of the corona electrode |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008004226A1 true DE102008004226A1 (en) | 2009-07-16 |
DE102008004226B4 DE102008004226B4 (en) | 2015-05-21 |
Family
ID=40758489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008004226.9A Expired - Fee Related DE102008004226B4 (en) | 2008-01-14 | 2008-01-14 | Apparatus and method for charging a photosensitive layer with directional aeration of the corona electrode |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008004226B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2607967B1 (en) * | 2011-12-23 | 2019-09-04 | HP Printing Korea Co., Ltd. | Image forming apparatus |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3382360A (en) * | 1965-09-10 | 1968-05-07 | Xerox Corp | Xerographic charging system having means for providing an air cushion between the charging device and the xerographic drum |
GB1220745A (en) * | 1967-05-22 | 1971-01-27 | Rank Xerox Ltd | Latch assemblies |
DE2630762A1 (en) * | 1975-07-14 | 1977-02-03 | Xerox Corp | CORONA DISCHARGE DEVICE |
US4745282A (en) | 1982-04-20 | 1988-05-17 | Ricoh Company, Ltd. | Ventilated corona charging |
US5170211A (en) | 1990-12-14 | 1992-12-08 | Xerox Corporation | Air filtration for xerographic corona devices |
JPH08166697A (en) * | 1994-12-13 | 1996-06-25 | Canon Inc | Multicolor image forming device |
US20060045558A1 (en) * | 2004-08-31 | 2006-03-02 | Satoshi Nishida | Image forming apparatus |
US7174114B2 (en) | 2004-07-29 | 2007-02-06 | Hewlett-Packard Development Company, Lp. | Apparatus and method for reducing contamination of an image transfer device |
EP1082642B1 (en) * | 1998-05-24 | 2008-06-25 | Hewlett-Packard Indigo B.V. | Printing system |
-
2008
- 2008-01-14 DE DE102008004226.9A patent/DE102008004226B4/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3382360A (en) * | 1965-09-10 | 1968-05-07 | Xerox Corp | Xerographic charging system having means for providing an air cushion between the charging device and the xerographic drum |
GB1220745A (en) * | 1967-05-22 | 1971-01-27 | Rank Xerox Ltd | Latch assemblies |
DE2630762A1 (en) * | 1975-07-14 | 1977-02-03 | Xerox Corp | CORONA DISCHARGE DEVICE |
US4086650A (en) | 1975-07-14 | 1978-04-25 | Xerox Corporation | Corona charging device |
US4745282A (en) | 1982-04-20 | 1988-05-17 | Ricoh Company, Ltd. | Ventilated corona charging |
US5170211A (en) | 1990-12-14 | 1992-12-08 | Xerox Corporation | Air filtration for xerographic corona devices |
JPH08166697A (en) * | 1994-12-13 | 1996-06-25 | Canon Inc | Multicolor image forming device |
EP1082642B1 (en) * | 1998-05-24 | 2008-06-25 | Hewlett-Packard Indigo B.V. | Printing system |
US7174114B2 (en) | 2004-07-29 | 2007-02-06 | Hewlett-Packard Development Company, Lp. | Apparatus and method for reducing contamination of an image transfer device |
US20060045558A1 (en) * | 2004-08-31 | 2006-03-02 | Satoshi Nishida | Image forming apparatus |
Non-Patent Citations (2)
Title |
---|
JP 08 166 697 A mit englischem Abstract und Computerübersetzung des JPO in: Patent Abstracts of Japan * |
JP 08-166 697 A mit englischem Abstract und Computerübersetzung des JPO |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2607967B1 (en) * | 2011-12-23 | 2019-09-04 | HP Printing Korea Co., Ltd. | Image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE102008004226B4 (en) | 2015-05-21 |
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Legal Events
Date | Code | Title | Description |
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OP8 | Request for examination as to paragraph 44 patent law | ||
R082 | Change of representative |
Representative=s name: PATENTANWAELTE SCHAUMBURG, THOENES, THURN, LAN, DE |
|
R081 | Change of applicant/patentee |
Owner name: OCE PRINTING SYSTEMS GMBH & CO. KG, DE Free format text: FORMER OWNER: OCE PRINTING SYSTEMS GMBH, 85586 POING, DE Effective date: 20130820 |
|
R082 | Change of representative |
Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE Effective date: 20130820 Representative=s name: SCHAUMBURG UND PARTNER PATENTANWAELTE MBB, DE Effective date: 20130820 Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE MBB, DE Effective date: 20130820 Representative=s name: PATENTANWAELTE SCHAUMBURG, THOENES, THURN, LAN, DE Effective date: 20130820 |
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R018 | Grant decision by examination section/examining division | ||
R082 | Change of representative |
Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE Representative=s name: SCHAUMBURG UND PARTNER PATENTANWAELTE MBB, DE Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE MBB, DE |
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R020 | Patent grant now final | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |