EP0402525A2 - Cartridge for copying apparatus and the like - Google Patents

Cartridge for copying apparatus and the like Download PDF

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Publication number
EP0402525A2
EP0402525A2 EP89122263A EP89122263A EP0402525A2 EP 0402525 A2 EP0402525 A2 EP 0402525A2 EP 89122263 A EP89122263 A EP 89122263A EP 89122263 A EP89122263 A EP 89122263A EP 0402525 A2 EP0402525 A2 EP 0402525A2
Authority
EP
European Patent Office
Prior art keywords
toner
opening
container
waste toner
reservoir
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
EP89122263A
Other languages
German (de)
French (fr)
Other versions
EP0402525B1 (en
EP0402525A3 (en
Inventor
Manfred Keilbach
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT89122263T priority Critical patent/ATE91808T1/en
Publication of EP0402525A2 publication Critical patent/EP0402525A2/en
Publication of EP0402525A3 publication Critical patent/EP0402525A3/en
Application granted granted Critical
Publication of EP0402525B1 publication Critical patent/EP0402525B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
    • G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering
    • 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
    • G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
    • G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals
    • 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
    • G03G21/10—Collecting or recycling waste developer
    • G03G21/105—Arrangements for conveying toner waste
    • 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
    • G03G2215/00987—Remanufacturing, i.e. reusing or recycling parts of the image forming apparatus
    • 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
    • G03G2221/1621—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the cleaning unit re-use of cleaned toner
    • 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
    • G03G2221/1648—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts using seals, e.g. to prevent scattering of toner
    • 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
    • G03G2221/1669—Details about used materials
    • 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
    • G03G2221/183—Process cartridge

Definitions

  • the invention relates to a cassette for copiers and the like with an image drum and a toner reservoir.
  • Cassettes of this type are usually designed as so-called disposable cassettes. They are thrown away after the toner is used up, even if they are still fully functional, including the image drum.
  • the invention is therefore based on the object of providing a cassette for copiers and the like which does not have to be thrown away until the life of the image drum has been reached without there being an unintentional leakage of toner and / or developer while the cassette is outside the associated device.
  • This object is achieved by a cassette with the features of claim 1.
  • the solution according to the invention is based on the consideration that there are two possibilities for making available the increased amount of toner which enables the image drum to be used until the end of its life.
  • One possibility is to provide the toner storage container with a subsequently reclosable opening before the first use of the cassette, through which the barrier film, which tightly closes the outlet opening of both the toner storage container and the developer storage container in an unused cassette, with a passage opening can be provided without the film losing its closing function for the outlet opening of the developer reservoir.
  • the other possibility is to refill the cartridge with toner after the first toner filling has been used up and the waste toner has been removed, and since the barrier film has been removed is and can no longer be replaced to prevent the leakage of toner and / or developer by means of a removable blocking element which interrupts the transport path of the waste toner return device.
  • the latter option is also suitable for those cartridges which are filled with an increased amount of toner before first use, provided the image drum is still functional after this increased amount of toner has been used up. Furthermore, it is possible to fill in the increased amount of toner when refilling an already used cassette, provided that this still makes sense with regard to the remaining life of the image drum. Before replacing the old toner with new toner, only the cleaning unit of the cartridge needs to be cleaned. It is therefore unnecessary to disassemble the cartridge almost completely and therefore with great effort, as would be necessary if one wanted to seal the toner supply container.
  • the blocking element is preferably a film, for example a silicone paper.
  • the waste toner return device consists of a first screw conveyor, which penetrates the wall of the waste toner container and feeds waste toner to a second screw conveyor, which extends transversely to the axis of the first screw conveyor and feeds the waste toner to a third screw conveyor, which lies parallel to the first screw conveyor the wall of the Penetrates the toner reservoir.
  • the blocking element bears against the third screw conveyor and interrupts the transport path here.
  • An interruption of the transport path at this point is particularly advantageous because it is sufficient to place a film on that part of this screw conveyor on which the toner supplied from the second screw conveyor falls. Since a sealing body is generally arranged between these two screw conveyors, the film only needs to be inserted between the sealing body and the third screw conveyor.
  • the interruption of the transport route or an additional interruption is also possible on the first screw conveyor.
  • the locking element preferably has a trigger tab which can be grasped with the fingers and which can be formed by a section of the strip when using a strip-shaped film. The user then only needs to grasp and pull off the pull tab that is visible under the front housing. The blocking element then releases the transport route.
  • a cassette for copiers or the like has an outer housing 1 made of plastic, in which a toner reservoir 2 is contained.
  • the image drum 4 On the side facing away from the magnetic roller 3, the image drum 4 is followed by a drum cleaning unit with an old toner container 5.
  • waste toner return screw 7 which is driven by a gear 6 when the cartridge is used, and which forms one of the mechanical conveying elements of a waste toner return device.
  • This waste toner return screw 7 is fed to the waste toner by means of a first transport screw 8, which penetrates an opening in the end wall of the waste toner container 4 and feeds the waste toner removed from this container onto the end of the waste toner return screw 7 adjacent to the gear 6.
  • the other end of the waste toner return screw 7 is arranged above a second transport screw 9, which penetrates the end wall of the toner supply container 2. Between that At the end of the waste toner return screw 7 and the section of the second transport screw 9 arranged underneath, a sealing body 10 is arranged, which forms a feed hopper for the second transport screw 9.
  • an opening 11 is worked into the top of the outer housing 1 above the toner reservoir 2, through which the waste toner can be removed and new toner or developer can be filled in.
  • the opening 11 is then sealed again by means of an adhesive strip 12. After cleaning the cleaning unit and waste toner return device, the cartridge is fully functional again.
  • the strip-shaped barrier film 13 is so long that its portion hanging down from the outer housing 1 can be used as a pull tab that the user only needs to grasp with his fingers.
  • the sealing film is pulled out of the gap between the second screw conveyor 9 and the sealing body 10, whereby the trans port of the waste toner return device is released again.
  • FIG. 3 The exemplary embodiment of a cassette for copying machines or the like shown in FIG. 3 largely corresponds to the exemplary embodiment according to FIGS. 1 and 2, which is why only that part is shown which differs in part from the cassette according to the first exemplary embodiment.
  • the outer housing 101 contains a toner reservoir 102 and next to this a developer reservoir 114.
  • the toner reservoir 102 is provided with an outlet opening 102 ', the developer reservoir with an outlet opening 114'.
  • these two outlet openings are closed before the first use of the cassette with a barrier film 115, which covers the outlet openings 102 'and 114' covering the underside of the two storage containers 102 and 114 and through a slot in the wall of the outer housing 101 after is guided outside so that it can be grasped here for the purpose of pulling off.
  • the slot for the passage of the barrier film 115 through the wall of the housing 101 is dimensioned such that it is completely closed by the barrier film 115.
  • the other end of the barrier film 115 is glued to the underside of the developer reservoir 114.
  • the barrier film 115 is pressed by a toner conveying drum 116 onto the underside of the toner reservoir 102.
  • the toner conveying drum 116 lies tightly against a partition wall 117 which, together with the toner storage container 102 and part of the wall of the outer housing 102, delimits a toner supply space 118 from which the toner can only exit to the magnetic roller (not shown) when the toner conveying drum 116 is driven becomes.
  • the top of the toner reservoir 102 has been subsequently provided with an opening 111 through which and the passage opening 102 'through the barrier film 115 is provided with an opening 115'.
  • This breakthrough 115 'at least a portion of the toner located in the toner reservoir 102 is transferred into the reservoir 118.
  • the toner reservoir 102 is then filled with additional toner.
  • the opening 111 is then closed, for example by means of an adhesive tape.
  • the cassette 101 now contains approximately twice the amount of toner compared to known cassettes.
  • the barrier film 115 is completely pulled out of the housing 101, as in the known cassettes. As a result, the outlet openings 114 'and 115' are completely released. The developer can thereby reach the magnetic roller and, after activation of the toner transport roller 116, can be mixed with the toner as required. Of course, if the life of the imaging drum should allow this, this cartridge can be made operational again in the manner described in connection with the exemplary embodiment according to FIGS. 1 and 2 after the entire toner has been consumed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Dry Development In Electrophotography (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Pens And Brushes (AREA)
  • Cleaning In Electrography (AREA)

Abstract

A cartridge for copying apparatus and the like, which contains an image drum (4) and a toner stock container (2), in the wall of which a closeable toner charging aperture (11) is provided, has at least one removable locking element (13) which interrupts the transport path of a used toner return device (7, 8, 9) and thus prevents the emergence of toner from the cartridge and/or closes the outlet aperture of a developer stock chamber and is provided, in the region of the outlet aperture of the toner stock container with a passage aperture through which the toner passes into a storage space from which the toner can only emerge with the aid of a toner transporting device (116). <IMAGE>

Description

Die Erfindung betrifft eine Kassette für Kopiergeräte und der­gleichen mit einer Bildtrommel und einem Tonervorratsbehälter.The invention relates to a cassette for copiers and the like with an image drum and a toner reservoir.

Kassetten dieser Art sind üblicherweise als sogenannte Einweg­kassetten ausgebildet. Sie werden, nachdem der Tonervorrat verbraucht ist, weggeworfen, auch wenn sie im übrigen ein­schließlich der Bildtrommel noch voll funktionsfähig sind.Cassettes of this type are usually designed as so-called disposable cassettes. They are thrown away after the toner is used up, even if they are still fully functional, including the image drum.

Da das Wegwerfen solcher Kassetten aus ökonomischen und öko­logischen Gründen unverantwortlich ist, wurde vorgeschlagen (DE-GM 87 16 525.2), nach dem Verbrauch des Toners den Toner­vorratsbehälter mit einer Nachfüllöffnung zu versehen, um den Alttoner entnehmen und neuen Toner einfüllen zu können. Beim Transport einer in dieser Weise mit neuem Toner gefüllten Kas­sette kann es jedoch zu einem Austreten des Toners aus der Kassette kommen, weil vor dem ersten Gebrauch der Kassette eine Sperrfolie abgezogen werden muß, welche nicht nur die Austrittsöffnung des Tonervorratsbehälters, sondern auch die­jenige eines Entwicklerbehälters dicht verschließt, und der Alttonerbehälter wegen der Alttoner-Rückführeinrichtung nicht vollkommen dicht ist.Since throwing away such cartridges is irresponsible for economic and ecological reasons, it was proposed (DE-GM 87 16 525.2) to provide the toner reservoir with a refill opening after the toner has been used up, in order to be able to remove the old toner and fill in new toner. When a cartridge filled with new toner is transported in this way, however, the toner may leak out of the cartridge because, before the cartridge is used for the first time, a barrier film must be removed, which not only covers the outlet opening of the toner reservoir, but also that of a developer container closes tightly, and the waste toner container is not completely leakproof because of the waste toner return device.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Kassette für Kopiergeräte und dergleichen zu schaffen, die erst dann weggeworfen zu werden braucht, wenn die Lebensdauer der Bild­trommel erreicht ist, ohne daß es zu einem ungewollten Austre­ten von Toner und/oder Entwickler kommen kann, während sich die Kassette außerhalb des zugehörigen Gerätes befindet. Diese Aufgabe löst eine Kassette mit den Merkmalen des Anspruches 1.The invention is therefore based on the object of providing a cassette for copiers and the like which does not have to be thrown away until the life of the image drum has been reached without there being an unintentional leakage of toner and / or developer while the cassette is outside the associated device. This object is achieved by a cassette with the features of claim 1.

Die erfindungsgemäße Lösung beruht auf der Überlegung, daß es zwei Möglichkeiten gibt, die vergrößerte Tonermenge, die eine Nutzung der Bildtrommel bis an das Ende ihrer Lebensdauer ermöglicht, zur Verfügung zu stellen. Die eine Möglichkeit besteht darin, vor dem ersten Gebrauch der Kassette deren Toner­vorratsbehälter mit einer anschließend wieder verschließbaren Öffnung zu versehen, durch die hindurch die Sperrfolie, welche bei einer noch ungebrauchten Kassette die Auslaßöffnung sowohl des Tonervorratsbehälters als auch des Entwicklervorratsbe­hälters dicht verschließt, mit einer Durchlaßöffnung versehen werden kann, ohne daß die Folie ihre Schließfunktion für die Auslaßöffnung des Entwicklervorratsbehälters verliert. Durch die Durchlaßöffnung der Sperrfolie hindurch kann dann zumin­dest ein großer Teil des sich im Tonervorratsbehälter befin­denen Toners in den Vorratsraum überführt werden, wodurch es möglich ist, in den Tonervorratsbehälter eine Tonermenge nach­zufüllen, die in der Regel annähernd so groß ist wie die vor dem Öffnen des Tonervorratsbehälters in diesem vorhandenen Füllmenge. Da der Toner aus dem Vorratsraum nicht von selbst austreten kann und der Entwicklervorratsbehälter nach wie vor dicht verschlossen ist, kann es zu keinem Toneraustritt kommen, während sich die Kassette außerhalb des zugehörigen Gerätes befindet.The solution according to the invention is based on the consideration that there are two possibilities for making available the increased amount of toner which enables the image drum to be used until the end of its life. One possibility is to provide the toner storage container with a subsequently reclosable opening before the first use of the cassette, through which the barrier film, which tightly closes the outlet opening of both the toner storage container and the developer storage container in an unused cassette, with a passage opening can be provided without the film losing its closing function for the outlet opening of the developer reservoir. Through the passage opening of the barrier film at least a large part of the toner located in the toner storage container can then be transferred into the storage space, which makes it possible to refill a toner quantity in the toner storage container which is generally approximately as large as that before the opening of the Toner container in this existing filling quantity. Since the toner cannot escape from the reservoir on its own and the developer reservoir is still tightly sealed, no toner can escape while the cartridge is outside the associated device.

Die andere Möglichkeit besteht darin, die Kassette nach dem Verbrauch der ersten Tonerfüllung und der Entnahme des Alttoners erneut mit Toner zu füllen und, da die Sperrfolie abgezogen ist und nicht mehr ersetzt werden kann, den Austritt von Toner und/oder Entwickler mittels eines entfernbaren Sperrelementes zu verhindern, das den Transportweg der Alttoner-Rückführein­richtung unterbricht.The other possibility is to refill the cartridge with toner after the first toner filling has been used up and the waste toner has been removed, and since the barrier film has been removed is and can no longer be replaced to prevent the leakage of toner and / or developer by means of a removable blocking element which interrupts the transport path of the waste toner return device.

Selbstverständlich kommt die letztgenannte Möglichkeit auch für solche Kassetten in Frage, die vor dem ersten Gebrauch mit einer vergrößerten Tonermenge gefüllt sind, sofern nach dem Verbrauch dieser vergrößerten Tonermenge die Bildtrommel noch funktionsfähig ist. Ferner ist es möglich, bei der erneu­ten Befüllung einer bereits benutzten Kassette die erhöhte Tonermenge einzufüllen, sofern dies im Hinblick auf die rest­liche Lebensdauer der Bildtrommel noch sinnvoll ist. Vor dem Ersetzen des Alttoners durch neuen Toner braucht nur die Reini­gungseinheit der Kassette gereinigt zu werden. Es erübrigt sich deshalb eine fast vollständige und damit aufwendige Zerle­gung der Kassette, wie dies erforderlich wäre, wenn man den Tonervorratsbehälter abdichten wollte.Of course, the latter option is also suitable for those cartridges which are filled with an increased amount of toner before first use, provided the image drum is still functional after this increased amount of toner has been used up. Furthermore, it is possible to fill in the increased amount of toner when refilling an already used cassette, provided that this still makes sense with regard to the remaining life of the image drum. Before replacing the old toner with new toner, only the cleaning unit of the cartridge needs to be cleaned. It is therefore unnecessary to disassemble the cartridge almost completely and therefore with great effort, as would be necessary if one wanted to seal the toner supply container.

Vorzugsweise ist das Sperrelement eine Folie, beispielsweise ein Silikonpapier.The blocking element is preferably a film, for example a silicone paper.

Üblicherweise besteht die Alttoner-Rückführeinrichtung aus einer ersten Transportschnecke, welche die Wand des Alttoner­behälters durchdringt und Alttoner einer zweiten Transport­schnecke zuführt, welche sich quer zur Achse der ersten Trans­portschnecke erstreckt und den Alttoner einer dritten Trans­portschnecke zuführt, die parallel zur ersten Transportschnecke liegend die Wand des Tonervorratsbehälters durchdringt.Usually, the waste toner return device consists of a first screw conveyor, which penetrates the wall of the waste toner container and feeds waste toner to a second screw conveyor, which extends transversely to the axis of the first screw conveyor and feeds the waste toner to a third screw conveyor, which lies parallel to the first screw conveyor the wall of the Penetrates the toner reservoir.

Bei einer bevorzugten Ausführungsform liegt das Sperrelement an der dritten Förderschnecke an und unterbricht hier den Trans­portweg. Eine Unterbrechung des Transportweges an dieser Stelle ist besonders vorteilhaft, weil es genügt, eine Folie auf den­jenigen Teil dieser Transportschnecke zu legen, auf den der von der zweiten Transportschnecke zugeführte Toner fällt. Da in der Regel zwischen diesen beiden Transportschnecken ein Dichtkörper angeordnet ist, braucht die Folie nur zwischen den Dichtkörper und die dritte Transportschnecke eingeführt zu werden.In a preferred embodiment, the blocking element bears against the third screw conveyor and interrupts the transport path here. An interruption of the transport path at this point is particularly advantageous because it is sufficient to place a film on that part of this screw conveyor on which the toner supplied from the second screw conveyor falls. Since a sealing body is generally arranged between these two screw conveyors, the film only needs to be inserted between the sealing body and the third screw conveyor.

Die Unterbrechung des Transportweges oder eine zusätzliche Unterbrechung ist aber auch an der ersten Transportschnecke möglich.The interruption of the transport route or an additional interruption is also possible on the first screw conveyor.

Vorzugsweise weist das Sperrelement eine mit den Fingern er­faßbare Abzuglasche auf, die bei Verwendung einer streifenför­migen Folie durch einen Abschnitt des Streifens gebildet sein kann. Der Anwender braucht dann nur die sichtbar unter dem Frontgehäuse herausragende Abzuglasche mit den Fingern zu er­fassen und abzuziehen. Das Sperrelement gibt dann den Trans­portweg frei.The locking element preferably has a trigger tab which can be grasped with the fingers and which can be formed by a section of the strip when using a strip-shaped film. The user then only needs to grasp and pull off the pull tab that is visible under the front housing. The blocking element then releases the transport route.

Im folgenden ist die Erfindung anhand von zwei in der Zeichnung dargestellten Ausführungsbeispielen im einzelnen erläutert. Es zeigen

  • Fig. 1 eine perspektivisch dargestellte Ansicht des ersten Ausführungsbeispiels,
  • Fig. 2 eine vergrößert und aufgebrochen dargestellte An­sicht des ersten Ausführungsbeispiels,
  • Fig. 3 einen unvollständig dargestellten Querschnitt des zweiten Ausführungsbeispiels.
The invention is explained in detail below with reference to two exemplary embodiments shown in the drawing. Show it
  • 1 is a perspective view of the first embodiment,
  • 2 is an enlarged and broken view of the first embodiment,
  • Fig. 3 shows an incomplete cross section of the second embodiment.

Eine Kassette für Kopiergeräte oder dergleichen weist ein aus Kunststoff bestehendes Außengehäuse 1 auf, in dem ein Toner­vorratsbehälter 2 enthalten ist. In diesen Tonervorratsbehäl­ter 2 ragt eine Magnetwalze 3, mit der Toner auf eine parallel zu ihr angeordnete Bildtrommel 4 aufgebracht werden kann. Auf der der Magnetwalze 3 abgewandten Seite schließt sich an die Bildtrommel 4 eine Trommelreinigungseinheit mit einem Alttoner­behälter 5 an.A cassette for copiers or the like has an outer housing 1 made of plastic, in which a toner reservoir 2 is contained. A magnetic roller 3, with which toner can be applied to an image drum 4 arranged parallel to it, projects into this toner supply container 2. On the side facing away from the magnetic roller 3, the image drum 4 is followed by a drum cleaning unit with an old toner container 5.

Neben der einen Stirnseite des Tonervorratsbehälters 2 und der entsprechenden Stirnseite des Alttonerbehälters 5 liegt eine bei Gebrauch der Kassette über ein Zahnrad 6 angetrie­bene Alttoner-Rückführschnecke 7, die eines der mechanischen Förderelemente einer Alttoner-Rückführeinrichtung bildet. Dieser Alttoner-Rückführschnecke 7 wird der Alttoner mittels einer ersten Transportschnecke 8 zugeführt, welche eine Öffnung in der Stirnwand des Alttonerbehälters 4 durchdringt und den aus diesem Behälter entnommenen Alttoner auf das dem Zahnrad 6 benachbarte Ende der Alttoner-Rückführschnecke 7 aufgibt.In addition to the one end face of the toner supply container 2 and the corresponding end face of the waste toner container 5, there is a waste toner return screw 7, which is driven by a gear 6 when the cartridge is used, and which forms one of the mechanical conveying elements of a waste toner return device. This waste toner return screw 7 is fed to the waste toner by means of a first transport screw 8, which penetrates an opening in the end wall of the waste toner container 4 and feeds the waste toner removed from this container onto the end of the waste toner return screw 7 adjacent to the gear 6.

Das andere Ende der Alttoner-Rückführschnecke 7 ist oberhalb einer zweiten Transportschnecke 9 angeordnet, welche die Stirn­wand des Tonervorratsbehälters 2 durchdringt. Zwischem dem Ende der Alttoner-Rückführschnecke 7 und dem darunter angeord­neten Abschnitt der zweiten Transportschnecke 9 ist ein Dicht­körper 10 angeordnet, welcher einen Aufgabetrichter für die zweite Transportschnecke 9 bildet.The other end of the waste toner return screw 7 is arranged above a second transport screw 9, which penetrates the end wall of the toner supply container 2. Between that At the end of the waste toner return screw 7 and the section of the second transport screw 9 arranged underneath, a sealing body 10 is arranged, which forms a feed hopper for the second transport screw 9.

Um die Kassette nach dem Verbrauch der ersten Toner- oder Ent­wicklerfüllung wieder verwenden zu können, wird in die Ober­seite des Außengehäuses 1 oberhalb des Tonervorratsbehälters 2 eine Öffnung 11 eingearbeitet, durch die hindurch der Alt­toner entfernt und neuer Toner oder Entwickler eingefüllt werden kann. Die Öffnung 11 wird danach mittels eines Klebestreifens 12 wieder dicht verschlossen. Nach einem Reinigen der Reini­gungseinheit und Alttoner-Rückführeinrichtung ist die Kassette wieder voll funktionsfähig.In order to be able to use the cartridge again after the first toner or developer filling has been used up, an opening 11 is worked into the top of the outer housing 1 above the toner reservoir 2, through which the waste toner can be removed and new toner or developer can be filled in. The opening 11 is then sealed again by means of an adhesive strip 12. After cleaning the cleaning unit and waste toner return device, the cartridge is fully functional again.

Um zu verhindern, daß beim Transport der Kassette zurück zum Anwender und beim Einsetzen in das Gerät Toner in die Trommel­reinigungseinheit und den Alttonerbehälter 5 gelangt und von hier über die Alttoner-Rückführeinrichtung aus der Kassette austreten kann, ist eine beispielsweise aus Silikonpapier be­stehende Abdichtfolie 13 zwischen die zweite Transportschnecke 9 und den Dichtkörper 10 eingelegt. Hierdurch wird der Spalt zwischen diesen beiden Bauteilen geschlossen und außerdem der Transportweg der Alttoner-Rückführeinrichtung unterbrochen. Daher kann hier auch während des Transports kein Toner austreten.In order to prevent toner from getting into the drum cleaning unit and the waste toner container 5 when the cassette is transported back to the user and when it is inserted into the device and from here can escape from the cassette via the waste toner return device, a sealing film 13, for example made of silicone paper, is between the second screw conveyor 9 and the sealing body 10 inserted. As a result, the gap between these two components is closed and the transport path of the waste toner return device is also interrupted. Therefore, no toner can escape here even during transport.

Wie Fig.2 zeigt, hat die streifenförmige Absperrfolie 13 eine so große Länge, daß ihr nach unten aus dem Außengehäuse 1 heraus­hängender Abschnitt als eine Abzugslasche benutzt werden kann, die der Benutzer nur mit den Fingern zu erfassen braucht. Durch einen Zug in Längsrichtung der Abzugslasche wird die Abdicht­folie aus dem Spalt zwischen der zweiten Transportschnecke 9 und dem Abdichtkörper 10 herausgezogen, wodurch der Trans­ portweg der Alttoner-Rückführeinrichtung wieder freigegeben wird.As shown in FIG. 2, the strip-shaped barrier film 13 is so long that its portion hanging down from the outer housing 1 can be used as a pull tab that the user only needs to grasp with his fingers. By pulling in the longitudinal direction of the pull tab, the sealing film is pulled out of the gap between the second screw conveyor 9 and the sealing body 10, whereby the trans port of the waste toner return device is released again.

Es wäre auch möglich, eine zweite Absperrfolie zusätzlich oder statt der Absperrfolie 13 zwischen die erste Transportschnecke 8 und die Alttoner-Rückführschnecke 7 einzulegen und dadurch an dieser Stelle den Transportweg der Alttoner-Rückführein­richtung zu unterbrechen, wodurch ebenfalls ein ungewolltes Austreten des Toners während eines Transportes oder derglei­chen verhindert werden würde.It would also be possible to insert a second barrier film in addition to or instead of the barrier film 13 between the first transport screw 8 and the waste toner return screw 7 and thereby interrupt the transport path of the waste toner return device at this point, which also causes the toner to escape unintentionally during transport or the like would be prevented.

Das in Fig.3 dargestellte Ausführungsbeispiel einer Kassette für Kopiergeräte oder dergleichen stimmt weitgehend mit dem Ausführungsbeispiel gemäß den Fig.1 und 2 überein, weshalb nur derjenige Teil dargestellt ist, der sich von der Kassette gemäß dem ersten Ausführungsbeispiel teilweise unterscheidet.The exemplary embodiment of a cassette for copying machines or the like shown in FIG. 3 largely corresponds to the exemplary embodiment according to FIGS. 1 and 2, which is why only that part is shown which differs in part from the cassette according to the first exemplary embodiment.

Das Außengehäuse 101 enthält einen Tonervorratsbehälter 102 und neben diesem einen Entwicklervorratsbehälter 114. An seiner Unterseite ist der Tonervorratsbehälter 102 mit einer Auslaß­öffnung 102′, der Entwicklervorratsbehälter mit einer Auslaß­öffnung 114′ versehen. Bei den bekannten Kassetten sind diese beiden Auslaßöffnungen vor dem erstmaligen Gebrauch der Kas­sette mit einer Absperrfolie 115 verschlossen, die die Auslaß­öffnungen 102′ und 114′ überdeckend an der Unterseite der beiden Vorratsbehälter 102 und 114 anliegt sowie durch einen Schlitz in der Wand des Außengehäuses 101 nach außen geführt ist, um hier zum Zwecke des Abziehens erfaßt werden zu können. Der Schlitz für die Durchführung der Absperrfolie 115 durch die Wand des Gehäuses 101 ist so dimensioniert, daß er durch die Absperrfolie 115 vollständig verschlossen wird. Das andere Ende der Absperrfolie 115 ist an der Unterseite des Entwicklervor­ratsbehälters 114 festgeklebt.The outer housing 101 contains a toner reservoir 102 and next to this a developer reservoir 114. On its underside, the toner reservoir 102 is provided with an outlet opening 102 ', the developer reservoir with an outlet opening 114'. In the known cassettes, these two outlet openings are closed before the first use of the cassette with a barrier film 115, which covers the outlet openings 102 'and 114' covering the underside of the two storage containers 102 and 114 and through a slot in the wall of the outer housing 101 after is guided outside so that it can be grasped here for the purpose of pulling off. The slot for the passage of the barrier film 115 through the wall of the housing 101 is dimensioned such that it is completely closed by the barrier film 115. The other end of the barrier film 115 is glued to the underside of the developer reservoir 114.

Im Bereich zwischen der Auslaßöffnung 102′ und der Auslaßöff­nung 114′ wird die Absperrfolie 115 von einer Tonerfördertrom­mel 116 an die Unterseite des Tonervorratsbehälters 102 ange­drückt. Die Tonerfördertrommel 116 liegt andererseits dicht an einer Trennwand 117 an, welche zusammen mit dem Tonervor­ratsbehälter 102 und einem Teil der Wand des Außengehäuses 102 einen Tonervorratsraum 118 begrenzt, aus dem der Toner nur dann zu der nicht dargestellten Magnetwalze hinaustreten kann, wenn die Tonerfördertrommel 116 angetrieben wird.In the area between the outlet opening 102 'and the outlet opening 114', the barrier film 115 is pressed by a toner conveying drum 116 onto the underside of the toner reservoir 102. The toner conveying drum 116, on the other hand, lies tightly against a partition wall 117 which, together with the toner storage container 102 and part of the wall of the outer housing 102, delimits a toner supply space 118 from which the toner can only exit to the magnetic roller (not shown) when the toner conveying drum 116 is driven becomes.

Die Oberseite des Tonervorratsbehälters 102 ist nachträglich mit einer Öffnung 111 versehen worden, durch die und die Durch­laßöffnung 102′ hindurch die Absperrfolie 115 mit einem Durch­bruch 115′ versehen wird. Durch diesen Durchbruch 115′ hindurch wird zumindest ein Teil des sich im Tonervorratsbehälter 102 befindenden Toners in den Vorratsraum 118 überführt. Sodann wird der Tonervorratsbehälter 102 mit zusätzlichem Toner gefüllt. Danach verschließt man, beispielsweise mittels eines Klebeban­des, die Öffnung 111. Die Kassette 101 enthält nun etwa die doppelte Menge Toner im Vergleich zu bekannten Kassetten.The top of the toner reservoir 102 has been subsequently provided with an opening 111 through which and the passage opening 102 'through the barrier film 115 is provided with an opening 115'. Through this breakthrough 115 'at least a portion of the toner located in the toner reservoir 102 is transferred into the reservoir 118. The toner reservoir 102 is then filled with additional toner. The opening 111 is then closed, for example by means of an adhesive tape. The cassette 101 now contains approximately twice the amount of toner compared to known cassettes.

Vor dem erstmaligen Gebrauch der Kassette wird wie bei den be­kannten Kassetten die Absperrfolie 115 vollständig aus dem Gehäuse 101 herausgezogen. Dadurch werden die Auslaßöffnungen 114′ und 115′ vollständig freigegeben. Der Entwickler kann dadurch zu der Magnetwalze gelangen und nach Aktivierung der Tonertrans­portwalze 116 im erforderlichen Maße mit dem Toner vermischt werden. Selbstverständlich kann diese Kassette, falls die Lebens­dauer der Bildtrommel dies zulassen sollte, nach dem Verbrauch des gesamten Toners wieder in der in Verbindung mit dem Ausfüh­rungsbeispiel gemäß den Fig.1 und 2 beschriebenen Weise betriebs­betreit gemacht werden.Before using the cassette for the first time, the barrier film 115 is completely pulled out of the housing 101, as in the known cassettes. As a result, the outlet openings 114 'and 115' are completely released. The developer can thereby reach the magnetic roller and, after activation of the toner transport roller 116, can be mixed with the toner as required. Of course, if the life of the imaging drum should allow this, this cartridge can be made operational again in the manner described in connection with the exemplary embodiment according to FIGS. 1 and 2 after the entire toner has been consumed.

Alle in der vorstehenden Beschreibung erwähnten sowie auch die nur allein aus der Zeichnung entnehmbaren Merkmale sind als weitere Ausgestaltungen Bestandteile der Erfindung, auch wenn sie nicht besonders hervorgehoben und insbesondere nicht in den Ansprüchen erwähnt sind.All of the features mentioned in the above description and also the features that can only be inferred from the drawing are further refinements of the invention, even if they are not particularly emphasized and in particular are not mentioned in the claims.

Claims (7)

1) Kassette für Kopiergeräte und dergleichen mit a) einer Bildtrommel (4), b) einem Tonervorratsbehälter (2; 102), c) einer verschließbaren Tonereinfüllöffnung (11; 111) in der Wand des Tonervorratsbehälters (2; 102), d) wenigstens einem entfernbaren Sperrelement (13; 115), das den Transportweg einer Alttoner-Rückführungseinrich­tung (7, 8, 9) unterbricht und dadurch den Austritt von Toner aus der Kassette verhindert und/oder die Auslaß­öffnung (114′) einer Entwicklervorratskammer (114) ver­schließt und im Bereich der Auslaßöffnung (102′) des Tonervorratsbehälters (102) mit einer Durchlaßöffnung (115′) versehen ist, durch die hindurch der Toner in einen Vorratsraum (118) gelangt, aus dem der Toner nur mit Hilfe einer Tonertransportvorrichtung (116) austreten kann. 1) Cassette for copiers and the like with a) an image drum (4), b) a toner reservoir (2; 102), c) a closable toner fill opening (11; 111) in the wall of the toner reservoir (2; 102), d) at least one removable locking element (13; 115) which interrupts the transport path of a waste toner return device (7, 8, 9) and thereby prevents the leakage of toner from the cartridge and / or the outlet opening (114 ') of a developer supply chamber (114 ) is closed and in the area of the outlet opening (102 ') of the toner supply container (102) is provided with a passage opening (115') through which the toner enters a storage space (118) from which the toner can only be transported with the aid of a toner transport device (116 ) can emerge. 2) Kassette nach Anspruch 1, dadurch gekennzeichnet, daß das Sperrelement (13; 115) eine Folie oder ein Papier ist.2) Cassette according to claim 1, characterized in that the locking element (13; 115) is a film or a paper. 3) Kassette nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß außer dem Tonervorratsbehälter (102) auch der Vorratsraum (118) zumindest teilweise mit Toner gefüllt ist.3) Cassette according to claim 1 or 2, characterized in that in addition to the toner storage container (102) and the storage space (118) is at least partially filled with toner. 4) Kassette nach einem der Ansprüche 1 bis 3, dadurch gekenn­zeichnet, daß a) eines (9) der mechanischen Förderelemente (7, 8, 9) der Alttoner-Rückführeinrichtung eine Transportschnecke (9) ist, welche eine Öffnung in der Wand des Tonervorrats­behälters (2) durchdringt, b) das Sperrelement (13) an dem aus dem Tonervorratsbehäl­ter (2) herausragenden Teil der Transportschnecke (9) anliegt. 4) Cassette according to one of claims 1 to 3, characterized in that a) one (9) of the mechanical conveying elements (7, 8, 9) of the waste toner return device is a transport screw (9) which penetrates an opening in the wall of the toner storage container (2), b) the blocking element (13) rests on the part of the transport screw (9) protruding from the toner reservoir (2). 5) Kassette nach Anspruch 4, dadurch gekennzeichnet, daß a) ein Dichtungskörper (10) , der einen Kanal für den Durch­tritt des Alttoners zu dem außerhalb des Tonervorrats­behälters (2) liegenden Teil der Transportschnecke (9) bildet, in geringem Abstand von der Transportschnecke (9) angeordnet ist, b) das Sperrelement (13) zwischen dem Dichtungskörper (10) und der Transportschnecke (9) angeordnet ist und den Spalt zwischen dem Dichtungskörper (10) und der Transportschnecke (9) schließt. 5) Cassette according to claim 4, characterized in that a) a sealing body (10) which forms a channel for the passage of the waste toner to the part of the transport screw (9) lying outside the toner reservoir (2) is arranged at a short distance from the transport screw (9), b) the blocking element (13) is arranged between the sealing body (10) and the screw conveyor (9) and closes the gap between the sealing body (10) and the screw conveyor (9). 6) Kassette nach einem der Ansprüche 1 bis 5, dadurch gekenn­zeichnet, daß a) eines (8) der mechanischen Förderelemente (7, 8, 9) der Alttoner-Rückführeinrichtung eine Transportschnecke (8) ist, welche eine Öffnung in der Wand des Alttonerbehälters (5) durchdringt, b) das Sperrelement an dem außerhalb des Alttonerbehäl­ters (5) liegenden Teil der Transportschnecke (8) anliegt. 6) Cassette according to one of claims 1 to 5, characterized in that a) one (8) of the mechanical conveying elements (7, 8, 9) of the waste toner return device is a transport screw (8) which penetrates an opening in the wall of the waste toner container (5), b) the locking element rests on the part of the transport screw (8) lying outside the waste toner container (5). 7) Kassette nach einem der Ansprüche 1 bis 6, dadurch gekenn­zeichnet, daß das Sperrelement (13) eine mit den Fingern erfaßbare Abzugslasche aufweist. 7) Cassette according to one of claims 1 to 6, characterized in that the locking element (13) has a trigger tab which can be gripped with the fingers .
EP89122263A 1989-06-10 1989-12-02 Cartridge for copying apparatus and the like Expired - Lifetime EP0402525B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89122263T ATE91808T1 (en) 1989-06-10 1989-12-02 CASSETTE FOR COPY MACHINES AND THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8907136U 1989-06-10
DE8907136U DE8907136U1 (en) 1989-06-10 1989-06-10 Cassette for copiers etc.

Publications (3)

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EP0402525A2 true EP0402525A2 (en) 1990-12-19
EP0402525A3 EP0402525A3 (en) 1991-03-27
EP0402525B1 EP0402525B1 (en) 1993-07-21

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EP89122263A Expired - Lifetime EP0402525B1 (en) 1989-06-10 1989-12-02 Cartridge for copying apparatus and the like

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EP (1) EP0402525B1 (en)
AT (1) ATE91808T1 (en)
DE (2) DE8907136U1 (en)

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WO1994023348A1 (en) * 1993-03-26 1994-10-13 Yritysgrafiikka Oy Cleaning apparatus for color cartridges

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
US5828928A (en) * 1990-04-27 1998-10-27 Canon Kabushiki Kaisha Process cartridge mountable in an image forming system and a method for assembling a cleaning device
US5623328A (en) * 1990-04-27 1997-04-22 Canon Kabushiki Kaisha Process cartridge and image forming system on which process cartridge is mountable
EP0485271B1 (en) * 1990-11-06 1997-07-23 Canon Kabushiki Kaisha Process cartridge and image forming apparatus usable therewith
US5294960A (en) * 1990-11-06 1994-03-15 Canon Kabushiki Kaisha Detachable two-frame process cartridge for an image forming apparatus
US5682579A (en) * 1990-11-06 1997-10-28 Canon Kabushiki Kaisha Detachable two-frame process cartridge for an image forming apparatus

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DE8705870U1 (en) * 1987-04-16 1987-11-12 Berolina International Marketing Strategie GmbH, 1000 Berlin Cover for a toner container outlet opening
DE8716525U1 (en) * 1987-12-15 1988-01-28 Keilbach, Manfred, 7102 Weinsberg Cassette for small copiers and low-maintenance laser printers
EP0276192A1 (en) * 1987-01-16 1988-07-27 berolina Schriftbild, Wilcke, Wolff, Busch &amp; Partner KG Method of making throw-away-process-kits for photocopying apparatuses and laser printers reusable
EP0282223A1 (en) * 1987-03-03 1988-09-14 Mita Industrial Co. Ltd. Device for circulating developer
EP0330225A2 (en) * 1988-02-24 1989-08-30 Canon Kabushiki Kaisha Developing apparatus and developer container
EP0368598A2 (en) * 1988-11-11 1990-05-16 Konica Corporation A toner recovery device

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US4500196A (en) * 1981-08-19 1985-02-19 Ricoh Company, Ltd. Photoconductive element cleaning apparatus and residual toner collecting apparatus
EP0276192A1 (en) * 1987-01-16 1988-07-27 berolina Schriftbild, Wilcke, Wolff, Busch &amp; Partner KG Method of making throw-away-process-kits for photocopying apparatuses and laser printers reusable
EP0282223A1 (en) * 1987-03-03 1988-09-14 Mita Industrial Co. Ltd. Device for circulating developer
DE8705870U1 (en) * 1987-04-16 1987-11-12 Berolina International Marketing Strategie GmbH, 1000 Berlin Cover for a toner container outlet opening
DE8716525U1 (en) * 1987-12-15 1988-01-28 Keilbach, Manfred, 7102 Weinsberg Cassette for small copiers and low-maintenance laser printers
EP0330225A2 (en) * 1988-02-24 1989-08-30 Canon Kabushiki Kaisha Developing apparatus and developer container
EP0368598A2 (en) * 1988-11-11 1990-05-16 Konica Corporation A toner recovery device

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WO1994023348A1 (en) * 1993-03-26 1994-10-13 Yritysgrafiikka Oy Cleaning apparatus for color cartridges

Also Published As

Publication number Publication date
EP0402525B1 (en) 1993-07-21
DE8907136U1 (en) 1989-07-20
ATE91808T1 (en) 1993-08-15
EP0402525A3 (en) 1991-03-27
DE58904982D1 (en) 1993-08-26

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