EP0402525B1 - Kassette für Kopiergeräte und dergleichen - Google Patents

Kassette für Kopiergeräte und dergleichen Download PDF

Info

Publication number
EP0402525B1
EP0402525B1 EP89122263A EP89122263A EP0402525B1 EP 0402525 B1 EP0402525 B1 EP 0402525B1 EP 89122263 A EP89122263 A EP 89122263A EP 89122263 A EP89122263 A EP 89122263A EP 0402525 B1 EP0402525 B1 EP 0402525B1
Authority
EP
European Patent Office
Prior art keywords
toner
container
aperture
locking component
cartridge
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.)
Expired - Lifetime
Application number
EP89122263A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0402525A3 (de
EP0402525A2 (de
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
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
Application filed by Individual filed Critical Individual
Priority to AT89122263T priority Critical patent/ATE91808T1/de
Publication of EP0402525A2 publication Critical patent/EP0402525A2/de
Publication of EP0402525A3 publication Critical patent/EP0402525A3/de
Application granted granted Critical
Publication of EP0402525B1 publication Critical patent/EP0402525B1/de
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 as claimed in claim 1 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 lifespan.
  • One possibility is to provide the toner reservoir with a subsequently reclosable opening before the first use of the cartridge, through which the barrier film, which tightly closes the outlet opening of both the toner reservoir and the developer reservoir with an unused cartridge, with a passage opening can be provided without the film losing its closing function for the outlet opening of the developer reservoir.
  • the toner storage container 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 supply space on its own and the developer reservoir is still tightly sealed, no toner can escape while the cartridge is outside the associated device.
  • the other possibility according to claim 2 is to refill the cartridge after the consumption of the first toner filling and the removal of the waste toner 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 that 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 cassette almost completely and therefore costly, 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 route 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 locking 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 supply container 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 by a pull in the longitudinal direction of the pull tab, which results in the transport path 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 delivery 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 101, delimits a toner storage space 118 from which the toner can only exit to the magnetic roller (not shown) when the toner delivery 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 102' 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 ready for operation again in the manner described in connection with the exemplary embodiment according to FIGS. 1 and 2 after the entire toner has been used up.

Landscapes

  • 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)
  • Cleaning In Electrography (AREA)
  • Pens And Brushes (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP89122263A 1989-06-10 1989-12-02 Kassette für Kopiergeräte und dergleichen Expired - Lifetime EP0402525B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89122263T ATE91808T1 (de) 1989-06-10 1989-12-02 Kassette fuer kopiergeraete und dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8907136U 1989-06-10
DE8907136U DE8907136U1 (de) 1989-06-10 1989-06-10 Kassette für Kopiergeräte u.dgl.

Publications (3)

Publication Number Publication Date
EP0402525A2 EP0402525A2 (de) 1990-12-19
EP0402525A3 EP0402525A3 (de) 1991-03-27
EP0402525B1 true EP0402525B1 (de) 1993-07-21

Family

ID=6839984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89122263A Expired - Lifetime EP0402525B1 (de) 1989-06-10 1989-12-02 Kassette für Kopiergeräte und dergleichen

Country Status (3)

Country Link
EP (1) EP0402525B1 (fi)
AT (1) ATE91808T1 (fi)
DE (2) DE8907136U1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
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
US5682579A (en) * 1990-11-06 1997-10-28 Canon Kabushiki Kaisha Detachable two-frame process cartridge for an image forming apparatus
EP0692746B1 (en) * 1990-11-06 2000-09-06 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
FI95083C (fi) * 1993-03-26 1995-12-11 Yritysgrafiikka Oy Värikasettien puhdistuslaite

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276192A1 (de) * 1987-01-16 1988-07-27 berolina Schriftbild, Wilcke, Wolff, Busch & Partner KG Verfahren zum Wiederverwendbarmachen von Wegwerfkartuschen für Fotokopiergeräte und Laserdrucker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501484A (en) * 1981-08-19 1985-02-26 Ricoh Company, Ltd. Photoconductive element cleaning apparatus and residual toner collecting apparatus
US4894688A (en) * 1987-03-03 1990-01-16 Mita Industrial Co., Ltd. Device for circulating developer
DE8705870U1 (de) * 1987-04-16 1987-11-12 Berolina International Marketing Strategie GmbH, 1000 Berlin Abdeckung für eine Tonerbehälter-Austrittsöffnung
DE8716525U1 (de) * 1987-12-15 1988-01-28 Keilbach, Manfred, 7102 Weinsberg Kassette für Kleinkopiergeräte und wartungsarme Laserdrucker
JP2629945B2 (ja) * 1988-02-24 1997-07-16 キヤノン株式会社 現像装置
US4941022A (en) * 1988-11-11 1990-07-10 Konica Corporation Toner recovery device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276192A1 (de) * 1987-01-16 1988-07-27 berolina Schriftbild, Wilcke, Wolff, Busch & Partner KG Verfahren zum Wiederverwendbarmachen von Wegwerfkartuschen für Fotokopiergeräte und Laserdrucker

Also Published As

Publication number Publication date
EP0402525A3 (de) 1991-03-27
EP0402525A2 (de) 1990-12-19
ATE91808T1 (de) 1993-08-15
DE58904982D1 (de) 1993-08-26
DE8907136U1 (de) 1989-07-20

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