DE2166948A1 - CORONA UNLOADER - Google Patents

CORONA UNLOADER

Info

Publication number
DE2166948A1
DE2166948A1 DE19712166948 DE2166948A DE2166948A1 DE 2166948 A1 DE2166948 A1 DE 2166948A1 DE 19712166948 DE19712166948 DE 19712166948 DE 2166948 A DE2166948 A DE 2166948A DE 2166948 A1 DE2166948 A1 DE 2166948A1
Authority
DE
Germany
Prior art keywords
corona
discharge wire
discharge
arrangement
spring
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
Application number
DE19712166948
Other languages
German (de)
Other versions
DE2166948B2 (en
DE2166948C3 (en
Inventor
Yoshio Ito
Hajime Katayama
Hiroshi Nitanda
Masaru Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP45020075A external-priority patent/JPS5029651B1/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE2166948A1 publication Critical patent/DE2166948A1/en
Publication of DE2166948B2 publication Critical patent/DE2166948B2/en
Application granted granted Critical
Publication of DE2166948C3 publication Critical patent/DE2166948C3/en
Expired legal-status Critical Current

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
    • 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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604—Arrangement or disposition of the entire apparatus
    • 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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604—Arrangement or disposition of the entire apparatus
    • G03G21/1623—Means to access the interior of the apparatus
    • G03G21/1628—Clamshell type
    • 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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1618—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the cleaning unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1618—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the cleaning unit
    • G03G2221/1624—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the cleaning unit transporting cleaned toner into separate vessels, e.g. photoreceptors, external containers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/163—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1636—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the exposure unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1657—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts transmitting mechanical drive power
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1672—Paper handling
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems

Description

Die Erfindung bezieht sich auf einen Koronaentlader mit einem Abschirmgehäuse und einer Entladungsdrahtanordnung , die sich zwischen den beiden Stirnseiten des Abschirmgehäuses erstreckt.The invention relates to a corona discharger with a shield case and a discharge wire assembly which are extends between the two end faces of the shielding housing.

Der Erfindung liegt die Aufgabe zugrunde, einen Koronaentlader dieser Art zu schaffen, bei dem der Abstand zwischen der Entladungsdrahtanordnung und der der Koronaentladung auszusetzenden Fläche genau justierbar ist.The invention has for its object to provide a corona discharger of this type in which the distance between the Discharge wire arrangement and the area to be exposed to the corona discharge is precisely adjustable.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine Feder zum Spannen der Entladungsdrahtanordnung, eine Führungsteilanordnung zum Abstützen der Entladungsdrahtanordnung in einem Abschnitt zwischen den beiden Stirnseiten des Abschirmgehäuses undAccording to the invention, this object is achieved by a spring for tensioning the discharge wire arrangement, a guide sub-arrangement for supporting the discharge wire arrangement in a section between the two end faces of the shielding housing and

IV/13IV / 13

609846/0005609846/0005

Dresarar öank (Müncner·} Kto. Jft» ä14Dresarar öank (Müncner ·} Kto. Jft »ä14

"OäürijäcK (Mündiönj Kto. 'Ϊ "OäürijäcK (Mündiönj Kto. 'Ϊ

eine Stellschraubenanordnung zum Einstellen der Lage der Führungsteilanordnung zum Justieren des Abstands zwischen der Entladungsdrahtanordnung und der der Koronaentladung auszusetzenden Fläche, wobei die Feder unabhängig von der Einstellung der Stellschraubenanordnung einen gleichbleibenden Spannungszustand der Entladungsdrahtanordnung aufrechterhält.a set screw assembly for adjusting the location of the guide subassembly to adjust the distance between the discharge wire assembly and the surface to be exposed to the corona discharge, wherein the spring maintains a constant state of tension of the discharge wire assembly regardless of the setting of the set screw assembly maintains.

Die Erfindung wird nachstehend anhand der Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung näher erläutert. Es zeigen:The invention is explained in more detail below using the description of an exemplary embodiment with reference to the drawing explained. Show it:

Fig. 1 einen Längsschnitt eines Kopiergeräts, Fig. 2 einen Längsschnitt eines erfindungsgemäßen Koronaentladers ,1 shows a longitudinal section of a copier, FIG. 2 shows a longitudinal section of a corona discharger according to the invention ,

Fig. 3 eine Draufsicht des Koronaentladers und Fig. 4 einen Schnitt desselben.FIG. 3 shows a plan view of the corona discharger and FIG. 4 shows a section of the same.

Das in Fig. 1 dargestellte Kopiergerät trägt an seiner Oberseite einen Vorlagenhalter 11, auf den eine Vorlage mit der zu kopierenden Seite nach unten aufgelegt wird. Zur Durchführung einer Schlitzbelichtung ist der Vorlagenhalter 11 hin-und herbewegbar. Das Kopierpapier P wird durch eine Vorschubeinrichtung in einzelnen Blättern zugeführt, durchläuft die elektrofotografischen Verfahrenseinrichtungen und wird über einen Auslaß 12 ausgetragen. The copier shown in Fig. 1 carries on its top a template holder 11 on which a template with the to be copied Is placed side down. The original holder 11 can be moved to and fro in order to carry out a slit exposure. The copy paper P is fed in sheets by a feeding device, passes through the electrophotographic process devices, and is discharged through an outlet 12.

AuT <ier Mantelfläche einer in Pfeilrichtung drehbaren Trommel 2 ist ein elektrofotografisches Aufzeichnungsmaterial 1AuT <ier lateral surface of a rotatable in the direction of the arrow Drum 2 is an electrophotographic recording material 1

60984 6/000 560984 6/000 5

angeordnet. Dieses besteht aus einer leitenden oder isolierenden Grundschicht, einer fotoleitfähigen Schicht und einer isolieren-■ den Deckschicht. Um die das Aufzeichnungsmaterial tragende drehbare Trommel 2 sind eine erste Koronaaufladeeinrichtung 4, eine Einrichtung 5 zum gleichzeitigen Eelichten und Aufladen, eine Totalbelichtungseinrichtung 6, eine Entwicklungseinrichtung 7, eine dritte Koronaaufladeeinrichtung 8, eine Bildübertragungseinrichtung 9 und eine Reinigungseinrichtung 10 in der angegebenen Reihenfolge angeordnet.arranged. This consists of a conductive or insulating base layer, a photoconductive layer and an insulating ■ the top layer. About the rotatable one carrying the recording material Drum 2 are a first corona charger 4, a Device 5 for simultaneous exposure and charging, a total exposure device 6, a developing device 7, a third corona charger 8, an image transferring device 9 and a cleaning device 10 arranged in the specified order.

Die erste Koronaaufladeeinrichtung 4 erteilt dem Aufzeich- ^ nungsmaterial 1 durch Gleichstromkoronaentladung eine positive oder negative Aufladung. Die Einrichtung 5 zum gleichzeitigen Belichten und Aufladen lädt das Aufzeichnungsmaterial 1 durch Gleichstromkoronaentladung mit der der ersten Aufladung entgegengesetzten Polarität oder durch eine Wechselstromkoronaentladung auf, während gleichzeitig ein Bild der zu kopierenden Vorlage auf das Aufzeichnungsmaterial projiziert wird, um darauf ein elektrostatisches Ladungsbild zu erzeugen.The first corona charger 4 gives the recorder ^ voltage material 1 a positive or negative charge by direct current corona discharge. The device 5 for simultaneous exposure and charging charges the recording material 1 by direct current corona discharge with the polarity opposite to that of the first charge or by an alternating current corona discharge while at the same time an image of the original to be copied is projected onto the recording material in order to have an electrostatic Generate charge image.

Das elektrostatische Ladungsbild wird anschließend mittels der Totalbelichtungseinrichtung 6, beispielsweise einer Fluoreszenzlampe, gleichmäßig ausgeleuchtet, um die Wirkung des nach außen wirkenden elektrischen Feldes des Ladungsbildes zu verstärken und damit den Kontrast des elektrostatischen Ladungsbildes zu verbessern. In der Entwicklungseinrichtung 7 wird dann das Ladungsbild mittels elektrostatisch geladenen Toners entwickelt.The electrostatic charge image is then generated by means of the total exposure device 6, for example a fluorescent lamp, evenly illuminated in order to intensify the effect of the external electric field of the charge image and thus improving the contrast of the electrostatic charge image. In the developing device 7, the charge image is then by means of electrostatically charged toner developed.

609846/0005609846/0005

Die dritte Koronaaufladeeinrichtung 8 ist nicht unbedingt erforderlich. Ihre Anwendung mit der entsprechenden Polarität erleichtert jedoch das Übertragen des aif dem Aufzeichnungsmaterial 1 gebildeten Tonerbildes auf das Kopierpapier P. Die elektrostatische Übertragung des Tonerbildes auf das Kopierpapier P erfolgt in der Übertragungseinrichtung 9. Nach der Bildübertragung noch auf dem Aufzeichnungsmaterial 1 haftender Toner wird in der Reinigungseinrichtung 10 mittels Reinigungswalzen entfernt.The third corona charger 8 is not absolutely necessary. Their application with the appropriate polarity is facilitated however, the transfer of the toner image formed by the recording material 1 to the copy paper P. The electrostatic The toner image is transferred to the copy paper P in the transfer device 9. Still after the image transfer Toner adhering to the recording material 1 becomes in the cleaning device 10 removed by means of cleaning rollers.

Das Kopierpapier P mit dem von dem Aufzeichnungsmaterial 1 übertragenen Tonerbild wird mittels einer Ablöseinrichtung vom Aufzeichnungsmaterial abgelöst, in der Fixiereinrichtung fixiert und durch den Auslaß 12 aus dem Kopiergerät ausgetragen. Die elektrostatische Aufladung des Kopierpapiers P wird mittels einer Gleichstromkoronaentladungseinrichtung 30 entfernt.The copy paper P with that of the recording material 1 transferred toner image is detached from the recording material by means of a detachment device and fixed in the fixing device and discharged from the copier through outlet 12. The electrostatic Charge of the copy paper P is removed by means of a direct current corona discharger 30.

Das Gerät enthält also drei Koronaaufladeeinrichtungen, nämlich die erste Koronaaufladeeinrichtung 4, die Einrichtung 5 für gleichzeitiges Belichten und Aufladen und die dritte Koronaaufladeeinrichtung 8. Die erste Aufladeeinrichtung 4 und die Einrichtung 5 für gleichzeitiges Belichten und Aufladen sind in einer gemeinsamen Einheit zusammengefaßt, um ihren Ausbau aus dem Gerät durch einfaches Herausziehen nach oben zu erleichtern. Ebenso läßt sich die dritte Koronaaufladeeinrichtung 8 mühelos aus dem Gerät ausbauen.So the device contains three corona charging devices, namely, the first corona charger 4, the simultaneous exposure and charging device 5, and the third corona charger 8. The first charging device 4 and the device 5 for simultaneous exposure and charging are in one common unit combined to facilitate their removal from the device by simply pulling it upwards. as well the third corona charger 8 can be easily removed from the device.

Da die Koronaaufladeeinrichtungen, die nachfolgend kurzSince the corona charging devices, which are briefly described below

609846/0005609846/0005

Koronaentlader genannt werden, mit einer hohen Betriebsspannung arbeiten, kann bei einer Beschädigung oder bei Abreißen der Entladungselektrode oder des Entladungsdrahts eine gefährliche Lage entstehen. Das Gerät enthält deshalb eine elektrische Sicherheitseinrichtung zum automatischen Unterbrechen der Verbindung zwischen dem Koronaentlader und einer Spannungsquelle beim Abreißen bzw. bei Beschädigung des Entladungsdrahts bzw. der Elektrode. Diese Anordnung ist nachstehend im einzelnen anhand der Fig. 2, 3 und 4 beschrieben. Λ Are called corona dischargers, work with a high operating voltage, a dangerous situation can arise if the discharge electrode or the discharge wire is damaged or torn off. The device therefore contains an electrical safety device for automatically breaking the connection between the corona discharger and a voltage source if the discharge wire or the electrode is torn off or damaged. This arrangement is described in detail below with reference to FIGS. 2, 3 and 4. Λ

Der Koronaentlader enthält Drahtelektroden 400, Abschirmplatten 401 und isolierende Halterungen 402, 403. Die isolierenden Halterungen 402, 403 sind an den Enden der Abschirmplatte 401 befestigt. An der Halterung 403 ist ein Anschluß 404 für die Verbindung mit einer Hochspannungsquelle im Gerätehäuse angebracht. An dem Halterungsteil 402 ist ein Griffknopf 405 befestigt. Mittels Einstellschrauben 408, 409 sind an den isolierenden Halterungen 402, 403 verstellbare Führungen 406, 407 zum Einstellen der Lage der Elektroden 400 gehalten. Durch Verdrehen der Stellschrauben 408, 409 lassen sich die Führungsteile 406, 407 senkrecht bewegen, um damit den günstigsten Abstand zwischen dem Auf zeichmingsmaterial 1 und den Aufladeelektroden 400 einzustellen. Das Führungsteil 407 ist mit Kerben 410 zur Aufnahme der Orahtelektroden 400 versehen, um deren gegenseitigen Abstand innerhalb der Abschirmplatte 401 zu gewährleisten. Die Drahtelektroden 400 sind mit jeweils einem Ende mittels Schrauben 411 an der isolierenden Halterung 402 befestigt. Die anderen Enden der Drahtelektroden 400 -sind durch dieThe corona discharger includes wire electrodes 400, shielding plates 401 and insulating brackets 402, 403. The insulating Brackets 402, 403 are attached to the ends of the shield plate 401. On the holder 403 there is a connection 404 for the connection attached to a high voltage source in the device housing. A handle knob 405 is attached to the mounting part 402. Means Adjusting screws 408, 409 are adjustable guides 406, 407 on the insulating brackets 402, 403 for adjusting the position of electrodes 400 held. By turning the adjusting screws 408, 409, the guide parts 406, 407 can be moved vertically, in order to find the best distance between the recording material 1 and the charging electrodes 400. The guide part 407 is provided with notches 410 for receiving the wire electrodes 400, in order to ensure their mutual spacing within the shielding plate 401. The wire electrodes 400 are each provided with one End attached to insulating bracket 402 by screws 411. The other ends of the wire electrodes 400 are through the

609846/0005609846/0005

am Führungsteil 407 gebildeten Kerben 410 geführt, um Stifte 41-2 geschlungen, durch einen Schlitz 413 in der Halterung 4O3 geführt und an einean Zugstift 415 befestigt. Der Zugstift 415 ist durch eine Feder 414 nach links belastet und elektrischleitend mit dem Anschluß 404 verbunden.on the guide part 407 formed notches 410 out to pins 41-2 looped, passed through a slot 413 in the holder 403 and attached to a pull pin 415. The tension pin 415 is loaded to the left by a spring 414 and is electrically conductive connected to port 404.

Bei Zerreißen der Drahtelektroden 400 wird der Zugstift 415 durch die Feder 414 nach links verschoben und kommt dabei in Anlage an eine Masse schlußplatte 416, welche mittels der Einstellschraube 409 befestigt und leitend mit der Abschirmplatte 401 verbunden ist, wodurch die Hochspannung nun an Masse gelegt ist. Dadurch führt der Koronaentlader nun keine Hochspannung mehr.If the wire electrodes 400 are torn, the tension pin 415 is displaced to the left by the spring 414 and comes in in the process Plant on a mass circuit plate 416, which by means of the adjusting screw 409 is attached and conductively connected to the shielding plate 401, whereby the high voltage is now connected to ground. Through this the corona discharger now no longer carries high voltage.

Wie aus Fig. 3 ersichtlich, sind isolierende Abdeckteile 417, 418 abnehmbar derartig an den Halterungen 402, 403 befestigt, daß lediglich der Teil der Drahtelektroden, an dem die Koronaentladung stattfindet, freigelegt ist.As can be seen from FIG. 3, insulating cover parts 417, 418 can be removed in this way from the mountings 402, 403 attached so that only the part of the wire electrodes on which the corona discharge takes place is exposed.

BAD ORIGINALBATH ORIGINAL

609846/0005609846/0005

Claims (1)

Π66948Π66948 PatentanspruchClaim 1, Koronaentlader mit einem AbschiEniqehäuse und einer Entladungsdrahtanordnung, die sich zwischen den beiden Stirnseiten des Abschirmgehäuses erstreckt, gekennzeichnet durch eine Feder (414) zum Spannen der Entladungsdrahtanordnung (400), eine Führungsteilanordnung (406,407) zum Abstützen der Entladungsdrahtanordnung (400) in einem Abschnitt zwischen den beiden Stirnseiten des Abschirmgehäuses (401) und eine Stellschraubenanordnung (408, 409) zum Einstellen der Lage der Führungsteilanordnung (406, 407) zum Justieren des Abstands zwischen der Entladungsdrahtanordnung (400) und der der Koronaentladung auszusetzenden Fläche, wobei die Feder (414) unabhängig von der Einstellung der Stellschraubenanordnung (408, 409) einen gleichbleibenden Spannungszustand der Entladungsdrahtanordnung (400) aufrecht erhält.1, corona discharger with a cut-off housing and a Discharge wire arrangement, which extends between the two end faces of the shielding housing, characterized by a spring (414) for tensioning the discharge wire assembly (400), a guide subassembly (406, 407) for supporting the discharge wire assembly (400) in a section between the two end faces of the shielding housing (401) and a set screw arrangement (408, 409) for adjustment the location of the guide subassembly (406, 407) for adjusting the spacing between the discharge wire assembly (400) and the the area to be exposed to the corona discharge, the spring (414) regardless of the setting of the set screw arrangement (408, 409) maintains a constant voltage state of the discharge wire arrangement (400). 609846/0005609846/0005 LeerseiteBlank page
DE2166948A 1970-03-11 1971-03-11 Corona discharger with a shield case Expired DE2166948C3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP45020075A JPS5029651B1 (en) 1970-03-11 1970-03-11
JP3211270 1970-04-15

Publications (3)

Publication Number Publication Date
DE2166948A1 true DE2166948A1 (en) 1976-11-11
DE2166948B2 DE2166948B2 (en) 1981-07-09
DE2166948C3 DE2166948C3 (en) 1982-04-01

Family

ID=26356967

Family Applications (6)

Application Number Title Priority Date Filing Date
DE19712111759 Pending DE2111759A1 (en) 1970-03-11 1971-03-11 Electrophotographic copier
DE2167105A Expired DE2167105C2 (en) 1970-03-11 1971-03-11 Electrophotographic copier
DE19712166668 Pending DE2166668A1 (en) 1970-03-11 1971-03-11 OPTICAL SYSTEM FOR AN ELECTROPHOTOGRAPHIC COPY DEVICE
DE2166667A Expired DE2166667C3 (en) 1970-03-11 1971-03-11 Developing device for an electrophotographic copier
DE2166669A Expired DE2166669C3 (en) 1970-03-11 1971-03-11 Cleaning device in an electrophotographic machine
DE2166948A Expired DE2166948C3 (en) 1970-03-11 1971-03-11 Corona discharger with a shield case

Family Applications Before (5)

Application Number Title Priority Date Filing Date
DE19712111759 Pending DE2111759A1 (en) 1970-03-11 1971-03-11 Electrophotographic copier
DE2167105A Expired DE2167105C2 (en) 1970-03-11 1971-03-11 Electrophotographic copier
DE19712166668 Pending DE2166668A1 (en) 1970-03-11 1971-03-11 OPTICAL SYSTEM FOR AN ELECTROPHOTOGRAPHIC COPY DEVICE
DE2166667A Expired DE2166667C3 (en) 1970-03-11 1971-03-11 Developing device for an electrophotographic copier
DE2166669A Expired DE2166669C3 (en) 1970-03-11 1971-03-11 Cleaning device in an electrophotographic machine

Country Status (6)

Country Link
US (1) US3784297A (en)
CA (1) CA959114A (en)
DE (6) DE2111759A1 (en)
FR (1) FR2081850B1 (en)
GB (1) GB1352752A (en)
NL (2) NL7103059A (en)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2264823C2 (en) * 1971-06-03 1982-04-15 Canon K.K., Tokyo Control device in a copier
NL7305054A (en) * 1972-04-13 1973-10-16
IT969511B (en) * 1972-07-13 1974-04-10 Olivetti & Co Spa DEVICE FOR THE MAGNETIC SPACE DEVELOPMENT OF ELECTRO-STATIC LATENT IMAGES
GB1434102A (en) * 1972-07-20 1976-05-05 Mita Industrial Co Ltd Electrophotographic copying machine
JPS552867B2 (en) * 1972-09-24 1980-01-22
JPS5211595B2 (en) * 1972-09-29 1977-03-31
US3826892A (en) * 1972-10-25 1974-07-30 Xerox Corp Fusing apparatus
JPS5544951B2 (en) * 1974-05-21 1980-11-14
US4168901A (en) * 1975-01-21 1979-09-25 Canon Kabushiki Kaisha Developer housing sealing device for electrophotography
DE2507152C3 (en) * 1975-02-19 1978-11-02 Agfa-Gevaert Ag, 5090 Leverkusen Cleaning device for electrophotographic copiers
DE2507151B2 (en) * 1975-02-19 1977-01-27 Agfa-Gevaert Ag, 5090 Leverkusen CLEANING DEVICE FOR ELECTROPHOTOGRAPHIC COPY MACHINES
US4134673A (en) * 1975-02-27 1979-01-16 Xerox Corporation Dual brush cleaning apparatus
US4127082A (en) * 1975-09-26 1978-11-28 Sharp Kabushiki Kaisha Wiper roller for drying a wet sheet in a copying machine
US3999514A (en) * 1975-09-29 1976-12-28 International Business Machines Corporation Magnetic brush developer
US4030824A (en) * 1975-11-03 1977-06-21 Xerox Corporation Reproducing apparatus having an improved imaging surface cleaning system
US4023897A (en) * 1976-01-28 1977-05-17 International Business Machines Corporation Optics drive mechanism
DE2606458A1 (en) * 1976-02-18 1977-08-25 Eisbein Develop COPY DEVICE
JPS52125331A (en) * 1976-04-13 1977-10-21 Canon Inc Prevention and device for disorder of unfixed visible image
JPS5536845Y2 (en) * 1976-11-30 1980-08-29
DE2717055A1 (en) * 1977-04-18 1978-10-19 Siemens Ag DEVICE FOR STORING A DRUM USED AS AN INTERMEDIATE CARRIER IN AN ELECTROSTATIC PRINCIPLE PRINTER OR COPY DEVICE
US4188907A (en) * 1977-08-11 1980-02-19 Xerox Corporation Particle dispenser with a magnetically driven agitator
JPS5347834U (en) * 1977-09-21 1978-04-22
JPS6026018Y2 (en) * 1978-12-27 1985-08-05 コニカ株式会社 Cleaning equipment for copying machines, etc.
JPS6237246Y2 (en) * 1978-12-27 1987-09-22
JPS6326826Y2 (en) * 1979-06-08 1988-07-20
DE3116870C1 (en) * 1981-04-28 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Device for filling toner from a container into a storage container
DE3117229C2 (en) * 1981-04-30 1983-05-11 Siemens AG, 1000 Berlin und 8000 München Device for removing the developer mixture from a developer station of an electrographic device
DE3117238C2 (en) * 1981-04-30 1984-11-15 Siemens AG, 1000 Berlin und 8000 München Magnetic brush arrangement in a developing device for developing charge images on a charge image carrier
DE3117309C2 (en) * 1981-04-30 1983-04-14 Siemens AG, 1000 Berlin und 8000 München Mixing device for mixing a developer consisting of carrier particles and toner
DE3224296C1 (en) * 1982-06-29 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Device for filling and sieving toner from a container into a toner storage container
DE3376771D1 (en) * 1982-11-30 1988-06-30 Mita Industrial Co Ltd Improvement in image-forming apparatus
EP0221281B1 (en) * 1985-10-09 1988-11-30 Siemens Aktiengesellschaft Device for purging a developer mixture containing a magnetic component from the developer unit of a non-mechanical printing or copying machine
DE3633606A1 (en) * 1986-10-02 1988-04-14 Siemens Ag MULTIFUNCTIONAL TONER CONTAINER FOR NON-MECHANICAL PRINTING AND COPYING MACHINES
DE3633593A1 (en) * 1986-10-02 1988-04-07 Siemens Ag DEVICE FOR CHANGING A TONER CONTAINER IN A TONER CONVEYOR OF A NON-MECHANICAL PRINTING OR COPYING DEVICE
DE3633599A1 (en) * 1986-10-02 1988-04-07 Siemens Ag DEVICE FOR FILLING TONER FROM A TRANSPORT CONTAINER INTO A TONER STORAGE CONTAINER
JPS63101969U (en) * 1986-12-22 1988-07-02
JPH01146243U (en) * 1988-03-31 1989-10-09
JPH0369153U (en) * 1989-11-09 1991-07-09
US6126356A (en) * 1998-06-29 2000-10-03 Xerox Corporation Gear mounting using tubing and snap-fit caps
JP4574319B2 (en) * 2004-10-20 2010-11-04 キヤノン株式会社 Fixing device
JP5583159B2 (en) 2012-03-01 2014-09-03 キヤノン株式会社 Image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882412A (en) * 1953-06-03 1959-04-14 Olin Mathieson Apparatus for treating plastic material
US2922883A (en) * 1955-03-03 1960-01-26 Rca Corp Electrostatic charging means and method

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2959095A (en) * 1957-06-03 1960-11-08 Rca Corp Office copying machine
US3062094A (en) * 1958-12-29 1962-11-06 Xerox Corp Electrophotographic copying apparatus
US3062095A (en) * 1959-07-02 1962-11-06 Xerox Corp Projector optical scanning system
US3088386A (en) * 1959-11-16 1963-05-07 American Photocopy Equip Co Electrophotographic photocopy machine
US3187651A (en) * 1960-12-23 1965-06-08 Xerox Corp Xerographic reproducing apparatus
US3148601A (en) * 1960-12-23 1964-09-15 Xerox Corp Xerographic reproducing apparatus
US3150873A (en) * 1962-03-29 1964-09-29 Burroughs Corp Item jam detection apparatus
US3358637A (en) * 1962-04-24 1967-12-19 Plastic Coating Corp Toner unit for photoelectrostatic reproduction equipment
US3239863A (en) * 1963-08-19 1966-03-15 Thomas A Gardner Pressure gradient web cleaning apparatus
GB1078128A (en) * 1964-12-03 1967-08-02 Arlside Ltd Cleaning apparatus for electrostatographic purposes
US3331592A (en) * 1965-02-04 1967-07-18 Xerox Corp Xerographic fusing apparatus
DE1497170A1 (en) * 1965-07-31 1969-05-08 Arlside Ltd Electrophotographic duplicator
NL6614849A (en) * 1965-10-22 1967-04-24
US3445160A (en) * 1966-04-06 1969-05-20 Addressograph Multigraph Copying apparatus
US3374348A (en) * 1966-05-09 1968-03-19 Scm Corp Corona unit with a tapered passageway of flectrically nonconductive material betweenconductive housings thatare electrically interconnected
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3451376A (en) * 1966-11-09 1969-06-24 Fuji Photo Film Co Ltd Developing device for electrophotography
US3501236A (en) * 1967-02-20 1970-03-17 Addressograph Multigraph Photoelectrostatic print-out machine
JPS506382Y1 (en) * 1968-01-31 1975-02-24
US3634077A (en) * 1968-08-26 1972-01-11 Xerox Corp Method and apparatus for removing a residual image in an electrostatic copying system
US3579449A (en) * 1968-09-26 1971-05-18 Procter & Gamble Lubricant composition
NL167038B (en) * 1969-01-21 Addressograph Multigraph ELECTROPHOTOGRAPHIC COPIER.
US3883240A (en) * 1970-03-11 1975-05-13 Canon Kk Electrophotographic copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882412A (en) * 1953-06-03 1959-04-14 Olin Mathieson Apparatus for treating plastic material
US2922883A (en) * 1955-03-03 1960-01-26 Rca Corp Electrostatic charging means and method

Also Published As

Publication number Publication date
DE2166669C3 (en) 1986-10-23
GB1352752A (en) 1974-05-08
DE2167105C2 (en) 1984-01-26
NL7808013A (en) 1978-12-29
DE2166948B2 (en) 1981-07-09
DE2166948C3 (en) 1982-04-01
DE2166667A1 (en) 1975-01-16
CA959114A (en) 1974-12-10
NL7103059A (en) 1971-09-14
DE2166669B2 (en) 1980-09-18
DE2166667C3 (en) 1978-10-26
DE2111759A1 (en) 1971-09-30
DE2166668A1 (en) 1975-01-16
FR2081850A1 (en) 1971-12-10
US3784297A (en) 1974-01-08
FR2081850B1 (en) 1976-04-16
DE2166667B2 (en) 1978-02-23
DE2166669A1 (en) 1975-01-16

Similar Documents

Publication Publication Date Title
DE2166948A1 (en) CORONA UNLOADER
DE1772578A1 (en) Self-cleaning corona charging device for electrophotography
DE1030183B (en) Method and device for applying electrostatic charges in electrophotographic copying and recording processes
DE2550846C2 (en) Developing device for an electrophotographic copier
DE2821964C3 (en) A method for contacting an image receiving material with an image carrier and a transfer corona device for carrying out such a method
DE2648253A1 (en) CORONA UNLOADER
DE2165134A1 (en) Apparatus for liquid electro-photographic development
DE3045764A1 (en) COPY SHEET DISCONNECTOR, ESPECIALLY FOR AN ELECTROPHOTOGRAPHIC COPIER
DE2645672B2 (en) Apparatus for developing electrophotographic recording materials
DE3041123C2 (en) Electro-photographic copier having means for adjusting the amount of uniform charge
DE2103956B2 (en) Corona discharge device
DE1597812A1 (en) Device for electrostatic charging of a plate
DE1912278A1 (en) Method and device for electrostatic charging, in particular an electrophotographic image plate
DE2403143A1 (en) COPY DEVICE AND METHOD TO EFFECT DIFFERENT LEVELS IN GRAY SCALE REPRODUCTION
DE3333947C2 (en)
DE2948972A1 (en) CORONA DISCHARGE DEVICE
DE6905938U (en) ELECTROSTATIC COPY DEVICE
DE2339745A1 (en) METHOD FOR CHARGING A LAYER, DEVICE FOR CARRYING OUT THE METHOD AND APPLICATION OF THE METHOD
DE19942116C2 (en) Corotron device with small counter electrode
DE7207653U (en) DEVICE FOR STRIPPING DIELECTRIC LIQUID
DE1522646C3 (en) Method and device for copying a charge image
DE3806589A1 (en) Image generating device
DE102007046610B4 (en) Device for adjusting the electric potential in a moving band-shaped carrier of semiconductor material for color particles in an electrographic printing or copying machine
DE1522722C (en)
DE3006033A1 (en) ELECTROPHOTOGRAPHIC COPIER

Legal Events

Date Code Title Description
AC Divided out of

Ref country code: DE

Ref document number: 2111759

Format of ref document f/p: P

C3 Grant after two publication steps (3rd publication)