EP1329780A2 - Dispositif pour monter et démonter un rouleau d'un copieur ou d'une imprimante électrostatographique - Google Patents

Dispositif pour monter et démonter un rouleau d'un copieur ou d'une imprimante électrostatographique Download PDF

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Publication number
EP1329780A2
EP1329780A2 EP03001212A EP03001212A EP1329780A2 EP 1329780 A2 EP1329780 A2 EP 1329780A2 EP 03001212 A EP03001212 A EP 03001212A EP 03001212 A EP03001212 A EP 03001212A EP 1329780 A2 EP1329780 A2 EP 1329780A2
Authority
EP
European Patent Office
Prior art keywords
roller
shaft
roller shaft
axis
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03001212A
Other languages
German (de)
English (en)
Other versions
EP1329780A3 (fr
Inventor
Jorge L. Chavez
Adolf Philipp Greiner
Ralph Edward Williams
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
NexPress Solutions LLC
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 Eastman Kodak Co, NexPress Solutions LLC filed Critical Eastman Kodak Co
Publication of EP1329780A2 publication Critical patent/EP1329780A2/fr
Publication of EP1329780A3 publication Critical patent/EP1329780A3/fr
Withdrawn legal-status Critical Current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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer
    • G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush
    • 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
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to 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
    • G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
    • G03G21/1671—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus 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
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element

Definitions

  • the present invention relates to improvements in an installation device (and removing) a hollow roller of a floating shaft, which is designed that it supports the roller as it rotates.
  • the device according to the invention is especially when installing and removing an image recording or Image transfer roller useful in an electrostatographic printer or copier, in which there is only an extremely small space between the roller surface and the various processing stations used during electrostatographic Imaging process.
  • U.S. Patent Application 09 / 574,425 describes one electrostatographic document printer 10, which a pair contacting each other Opposed, overhung rollers 12 and 16 comprises.
  • the roller 12 comprises usually a hollow metal cylinder with a photoconductive outer layer 14 and is used to take pictures in a conventional way using the well known electrostatic Process, which is briefly outlined below: While the roller 12 rotates counterclockwise, the layer 14 becomes a primary charging station 22nd uniformly charged, at an exposure station 22 frame by frame by means of radiation exposed to form a charge image on layer 14 and toner particles exposed that selectively adhere to the charge image to make the image visible.
  • the continuous rotation of the roller 12 leads to the intermediate transfer of the previously formed toner image on a smooth outer surface 18 of a roller 16.
  • rollers 12 and 16 are rotatably supported each of a pair of shafts A2 and A3, which are floating on the rear plate RP of the printer frame extends outward.
  • a magnetic roller support device is used 32 during the rotation of the roller as a support for the free ends of the shafts A2 and A3.
  • This support device is attached to a pivot mounting 50 such that it between an operating position in which it supports the two roller shafts A2 and A3, and a stand-by position (shown in Fig. 2) is movable, in which there is sufficient distance from the rollers has an axial movement of the rollers for removal and maintenance to enable.
  • the imaging roller 12 When in use, the imaging roller 12 will be attached to it opposite ends 12A and 12B held by a pair of pivots 40 and 42, which are releasably insertable into the respective ends of the roller.
  • the rear pivot 40 is rotatably attached directly to shaft A2
  • the front pivot 42 is rotatably mounted on a stub shaft assembly A1 which, when in use, is detachably connected to the free end of shaft A2. If this connection is produced, the bevelled edges act on each pivot pin with the bevelled edges each roller end together to center the roller on the longitudinal axis of shaft A2 align.
  • the roller 12 slides, when the shaft assembly A1 is separated from the shaft A2, through an opening in the Front plate FP of the printer for maintenance of the pivots that support it.
  • the roller inlet and removal device 100 includes a pair of washers 102, 103 and a plurality of rods 104 that connect the disks together.
  • the disks 102, 103 are concentric arranged central openings 102A, 103A, which are each adapted so that they can take up axis A2 and slide on it.
  • the rods 104 are arranged parallel to one another and parallel to the longitudinal axis of shaft A2.
  • each rod extends slightly outside the circumference of one each of the support disks and lies on a circle that is a little smaller Has diameter than the inner diameter of the roller 12.
  • the respective length of the Rods including their extensions 104A, which extend over the disc 103, is slightly less than the length of the roller 12. Therefore, when the Pivot 42 is removed from the end 12B of the roller, from the bevel edge of the Pivot 40 and is thereby of several of the underlying rods 104 of the Roller installation and removal device held together.
  • the operator takes the handles 106 attached to the disc 103 and exerts an axially outward force.
  • roller installation and removal device damages the Roller surface when the roller is removed from the printer frame, so it has problems in some areas.
  • the axial movement of the roller is from the shaft A2, for example, is only supported as long as the central opening 103A of the Disk 103 remains in contact with shaft A2.
  • the operator must ensure that the roller axis remains substantially co-linear with the axis of shaft A2; otherwise there may be contact between the relatively sensitive surface of the roller
  • the roller should be held mechanically until the roller comes on all potentially damaging surfaces have been moved past while it is axially removed from the printer frame.
  • Another problem with the Roll installation and removal device along the way described here exists in that the roller is not supported during the entire period of its axial movement can be repaired so that small damage to the roller surface cannot be repaired can without removing the roller completely from the printer frame.
  • the invention is accordingly based on the object, an improved roll in and - To create expansion device of the type described, which is much more stable than that Prior art devices are and the problems of the devices according to no longer have the prior art.
  • An improved device for installing and removing a hollow cylindrical roller, e.g. an imaging roller in an electrostatographic Printer or the like, on a roller shaft having a free end cantilevered extends outwards from a support frame and one extends lengthways extending axis about which the roller can rotate, comprises in one preferred embodiment a variety of telescopic slide devices that are arranged at equal distances from each other and from the axis of the roller shaft.
  • Each of the slider devices includes a pair of elongated slider elements that are located in the Extend substantially parallel to the roller shaft.
  • each Sliding device comprises a conventional drawer-like sliding device as it Usually used to open a drawer in a closet between one closed and an open position to move.
  • Locking device provided to selectively slide in the sliding fasteners lock their respective roller loading positions and thus installing a roller to simplify the sliding elements.
  • the roller installation and removal device according to the invention is much more stable in its Construction as the aforementioned prior art device and enables complete support of the roller during the axial movement of the roller between their operating position and a maintenance position that is significantly spaced from the roller operating position, e.g. outside the support frame of the device, in who is using the roller. Therefore, work can be done on the roller, she can be cleaned, for example, without the roller from entering and leaving - Removal device must be removed. Furthermore, the roller installation device much cheaper to assemble and assemble the support device.
  • FIGS. 4-9 show a roll support assembly 110 incorporating the rolls of the present invention represents removal device and comprises a composite shaft arrangement 111, which from a pair of shaft sub-assemblies A1 and A2, which are releasably attached to the opposite ends are connected.
  • the shaft subassembly A2 includes a shaft member 112 that supports a pair of bearing assemblies B1 and B2 that again support the shaft element during rotation, and a disk-shaped one rear pivot 40 which, as described above, serves one end of the hollow roller D (shown in Fig. 9) to support so that the longitudinal axis of the roller substantially runs colinear to the longitudinal axis A 'of the shaft element A2.
  • the pivot pin 40 has an inclined inner edge 40A, so is adapted that they take up the similarly shaped edge of a roller to be supported can.
  • the bearing outer rings B1, B2 are firmly attached to the support plate (not shown) clamped, from which the shaft 112 in a floating type extends.
  • the front shaft sub-assembly A1 includes the front roller support Pivot 42 and an internal releasable dome assembly 43 that allows the Shaft subassemblies A1 and A2 are either permanently connected to one another or are separated from each other.
  • the front pivot 42 is a one-piece structure with a front shaft section 114, a sleeve section 115, which has a central Bore that is adapted to the front portion of the Shaft element 112 receives, and a flange portion 116, which has an inclined edge 116A, which is adapted to have one end of the roller D with respect to the axis A 'attacks, supports and aligns in the center.
  • the dome arrangement 43 is activated by turning a grub screw 117 that fits into a threaded hole in the foremost End of the shaft member 112 engages.
  • the shaft portion 114 of the pivot 42 supports a bearing arrangement B3, through which the shaft element is rotatable on one attached front roller support (shown in Fig.
  • the front roller support which is movably attached, is detachable with the outer ring when in use of the bearing B3 connected to the roller as it rotates in the bearing assembly support.
  • the front roller support is moved to a position at a sufficient distance from the roller so that the front shaft assembly A1 is uncoupled and from the rear Shaft arrangement A2 can be removed, while the roller is axially forward moved and eventually for maintenance and / or replacement of the rear Axle arrangement A2 can be removed.
  • the composite shaft arrangement 111 supports a roll insertion and Removal device 120, the installation or removal of a roller on the shaft assembly very relieved.
  • the device 120 is fixedly connected to the axle element 112 and is thereby supported by it, and preferably the device extends between pivots 40 and 42 when a roller is supported by these pivots becomes.
  • the device 120 includes a plurality (preferably three) elongated Sliders 122 which extend parallel to the shaft axis A 'and to each other and are equally spaced from the shaft axis.
  • the sliders 122 are from held by a pair of star-shaped support elements 124, each support having a central one has circular opening 124A, which is adapted to the large cylindrical portion 112A of the shaft member 112 and slide using a Locking screw 126 or a similar element can be attached to it, as in Fig. 7 shown (to prevent axial movement).
  • Any star-shaped support element 124 has a plurality of outwardly extending legs 128, the number of which Number of sliders corresponds to 122, and each leg is fixed with one not movable portion of the slider connected as described below.
  • a third star-shaped carrier 130 with a central circular opening 130A and a plurality of outwardly extending legs 132 is also with the Connected sliders and provides forward support. In contrast to the Carrier elements 124, however, the carrier 130 becomes slidable from the sleeve portion 115 of the pivot pin 42, so that the pivot pin of the shaft arrangement A2 can be uncoupled without affecting the roll installation and removal device becomes.
  • Each slider 122 preferably includes a conventional one "Drawer slide" of the type commonly used to create a Support drawer when in a closet or similar item between one open and closed position is moved.
  • Such a device comprises one elongated channel defining member 122A and an elongated slider member 122B that can only slide within the channel defined by element 122A.
  • the channel defining member 122A of each slider is through flange 128A, which extends at a right angle from the end portion of the legs the star-shaped carrier element 124 is connected to one of the legs 128.
  • each slider 122 is fixed in two places on its supported on the upper longitudinal side and at a certain point on the intercept 112A through the fixed connection of at least one of the star-shaped carrier elements 124 to the axis using the locking screw (s) 126, which is defined by a circular flange extends / extend on at least one of the support elements and the underlying one Attack / attack axis.
  • One end of each slider member 122B is appropriate Flange and screw connection 132A at the respective ends of the legs 132 with connected to the third star-shaped carrier 130.
  • the circular central opening 130A of the star-shaped carrier adapted to the Sleeve portion 115 of the front pivot 42 can accommodate when this on the Drive shaft 112 is arranged. In this way, the parallel and physical Ratio of the slider elements in relation to their respective support channels during the Maintain overall linear motion while the slider elements move from their Home or retracted positions (as shown in Fig. 4-7) in their full extended positions, as shown in FIG. 9.
  • each slider element 122B has a portion P that extends outward from the axis A by a distance that slightly larger than the most radially outer section P ' is channel defining elements 122A.
  • Each section P lies on a circle, the one Has diameter that is slightly smaller from the inner diameter of the roller D. Therefore slides the roller while the shaft assembly A1 from the shaft assembly A2 uncoupled and the front pivot 42 from its engagement with the front end the roller is removed (step by step) forward from the bevel 40A of the rear Pivot 40. When this is done, the roller will be completely by at least two of the Slider elements 122 B supported.
  • a roller on the mounting and dismounting device 120 facilitate while the slider members 122B extend in their respective extended Positions (shown in Fig. 9) is preferably a locking device provided that the axial movement of the slider elements (in their original positions) optionally prevented while the roller is manually on the ends of the slider elements is positioned and axially brought into a position in which the roller is full of the Slider elements is supported.
  • Locking device shown in Fig. 10 an elongated, the latch activating rod 140, which is in a position generally parallel to the axis A 'of one of the slider members 122B and the star-shaped support member 130 is supported.
  • the rod 140 is supported by a mounting plate 142 for rotation about its longitudinal axis supported that near the rear end of one of the fixed slider members 122B is attached, and from a hole 130B in an arm of the movable, star-shaped Carrier element 130.
  • the rod 140 can optionally also be from a disk 141 are supported, which is arranged at the front end of the roller and the outer circular edge serves the first time a roller is installed on the front edges the extended slider elements 122 B to facilitate.
  • Latch member 144 extends radially from the distal end (opposite the end with the handle) of the rod outward, and a torsion spring 146 that wraps around the rod 140 is used to tension the rod for rotation in one direction, so that Locking element normally behind the innermost edge (the rear pivot 40 am next) of the fixed channel defining member 122A that is associated with the Slider element 122B is connected, which supports the bar actuating the bolt.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)
EP03001212A 2002-01-22 2003-01-20 Dispositif pour monter et démonter un rouleau d'un copieur ou d'une imprimante électrostatographique Withdrawn EP1329780A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/054,453 US6556796B1 (en) 2000-05-19 2002-01-22 Drum-loading/unloading apparatus for electrostatographic printer/copier
US54453 2002-01-22

Publications (2)

Publication Number Publication Date
EP1329780A2 true EP1329780A2 (fr) 2003-07-23
EP1329780A3 EP1329780A3 (fr) 2005-01-05

Family

ID=21991163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001212A Withdrawn EP1329780A3 (fr) 2002-01-22 2003-01-20 Dispositif pour monter et démonter un rouleau d'un copieur ou d'une imprimante électrostatographique

Country Status (4)

Country Link
US (1) US6556796B1 (fr)
EP (1) EP1329780A3 (fr)
JP (1) JP2003216004A (fr)
DE (1) DE10301809A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5021332B2 (ja) * 2007-02-19 2012-09-05 株式会社リコー 電子写真式印刷装置
US8121521B2 (en) * 2009-05-22 2012-02-21 Ricoh Production Print Solutions LLC Support structure for a photoconductive drum of a production printing system
JP2013182034A (ja) * 2012-02-29 2013-09-12 Fuji Xerox Co Ltd 回転軸の締結構造及びこれを用いた中間転写ユニット並びに画像形成装置
JP2015125228A (ja) * 2013-12-26 2015-07-06 京セラドキュメントソリューションズ株式会社 ドラム支持構造、画像形成装置、軸受
WO2021021147A1 (fr) * 2019-07-31 2021-02-04 Hewlett-Packard Development Company, L.P. Entretien de tambour d'imprimante

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380579A (en) * 1977-04-19 1983-04-19 Shoji Matsumoto Electrostatic copying process and apparatus
JPS63106777A (ja) * 1986-10-24 1988-05-11 Ricoh Co Ltd 感光体ドラム支持機構
JPH09166898A (ja) * 1995-10-11 1997-06-24 Tec Corp 画像形成装置
US5999771A (en) * 1998-03-19 1999-12-07 Fujitsu Limited Electrophotographic apparatus with removable photosensitive drum
JP2001042587A (ja) * 1999-07-27 2001-02-16 Fuji Xerox Co Ltd 画像形成装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6427059B1 (en) * 1999-12-29 2002-07-30 Nexpress Solutions Llc Apparatus for positioning work stations in a document printer/copier
US6259873B1 (en) * 2000-05-19 2001-07-10 Nexpress Solutions Llc Cantilever drum mount for document printer/copier
US6308030B1 (en) * 2000-05-19 2001-10-23 Nexpress Solutions Llc Method and apparatus for supporting a drum for loading and unloading from a copier and/or printer apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4380579A (en) * 1977-04-19 1983-04-19 Shoji Matsumoto Electrostatic copying process and apparatus
JPS63106777A (ja) * 1986-10-24 1988-05-11 Ricoh Co Ltd 感光体ドラム支持機構
JPH09166898A (ja) * 1995-10-11 1997-06-24 Tec Corp 画像形成装置
US5999771A (en) * 1998-03-19 1999-12-07 Fujitsu Limited Electrophotographic apparatus with removable photosensitive drum
JP2001042587A (ja) * 1999-07-27 2001-02-16 Fuji Xerox Co Ltd 画像形成装置

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 012, Nr. 354 (P-761), 22. September 1988 (1988-09-22) & JP 63 106777 A (RICOH CO LTD), 11. Mai 1988 (1988-05-11) *
PATENT ABSTRACTS OF JAPAN Bd. 1997, Nr. 10, 31. Oktober 1997 (1997-10-31) & JP 09 166898 A (TEC CORP), 24. Juni 1997 (1997-06-24) *
PATENT ABSTRACTS OF JAPAN Bd. 200, Nr. 019, 5. Juni 2001 (2001-06-05) & JP 2001 042587 A (FUJI XEROX CO LTD), 16. Februar 2001 (2001-02-16) *

Also Published As

Publication number Publication date
US6556796B1 (en) 2003-04-29
EP1329780A3 (fr) 2005-01-05
JP2003216004A (ja) 2003-07-30
DE10301809A1 (de) 2003-07-31

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