EP0345270A1 - Spielfreie lagereinrichtung für fotoleitertrommeln in druck- oder kopiergeräten. - Google Patents
Spielfreie lagereinrichtung für fotoleitertrommeln in druck- oder kopiergeräten.Info
- Publication number
- EP0345270A1 EP0345270A1 EP88901025A EP88901025A EP0345270A1 EP 0345270 A1 EP0345270 A1 EP 0345270A1 EP 88901025 A EP88901025 A EP 88901025A EP 88901025 A EP88901025 A EP 88901025A EP 0345270 A1 EP0345270 A1 EP 0345270A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- drive shaft
- flange
- bearing
- receiving flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009434 installation Methods 0.000 title description 2
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/75—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
Definitions
- the invention relates to a device for releasably attaching a drum designed as an intermediate carrier of a non-mechanical printing or copying device according to the preamble of patent claim 1.
- Such a device is known from DE-OS 27 17 055.
- the photoconductor drum has turned-out cylindrical projections at both ends, which cooperate with corresponding approaches of drum-receiving flanges arranged on the drive shaft.
- One drum receiving flange is fixedly connected to the drive shaft, the other is detachably slidable onto the drive shaft via a through hole.
- a tensioning device that is screwed to the drive shaft resiliently presses the releasable drum mounting flange against the drum and this against the stationary drum mounting flange.
- the concentricity of the photoconductor drum that can be achieved with such a device depends on the difference in play between the drum mounting flanges and the inside diameter of the photoconductor drum, on the difference in play between the through hole of the releasable drum mounting flange and the drive shaft, and also on the actual concentricity of the drive shaft.
- the object of the invention is to design a device of the type mentioned at the outset in such a way that a high concentricity is achieved despite the easy interchangeability of the drum-shaped intermediate carrier. Damage and impairment of the surface of the drum-shaped intermediate carrier should be avoided.
- spreading elements are arranged when the tensioning device is screwed to the drive shaft - e.g. can consist of spring washers - the drum mounting flange is centered exactly on the drive shaft without clearance. Due to the additional measure of the conical design of the ends of the drum and the drum receiving flanges, no bearing play can occur between the drum receiving flanges and the drum.
- the first drum mounting flange is connected to the drive shaft by means of ribs designed as centering elements for the drum and extending along the inner wall of the drum.
- the ribs pass through the exchangeable drum receiving flange at the openings provided, so that the drum can be easily replaced when the drum receiving flange is removed.
- the Trom mel can be placed on the rib-shaped precentering elements ⁇ without damaging the surface. The fine centering then takes place by screwing in the clamping device and clamping the drum between the drum receiving flanges.
- the drive shaft is supported at both ends, namely at one end via a bearing which is fixedly associated with the housing and at the other end via a removable bearing.
- the bearing is advantageously arranged on the inside of a bearing plate that can be screwed to the housing, the bearing plate being designed in such a way that it completely covers the access area for the drum in a dust-free and contact-safe manner when installed.
- FIG. 1 shows a storage device for a photoconductor drum in a printing device which works on the principle of electrophotography in the installed state of the photoconductor drum, partly in a sectional view,
- FIG 3 shows a schematic representation of the bearing device in the relaxed state of the tensioning device.
- the drum-shaped intermediate carrier the so-called photoconductor drum 10
- the drum-shaped intermediate carrier is in a housing carrier 11 of the device in a printing device, which is not shown in detail here and works on the principle of electrophotography rotatably mounted and is motor-driven via a pulley 12 and a drive shaft 13.
- a first drum mounting flange 14 is fastened on the drive shaft 13 and firmly connected to it.
- the first drum receiving flange 14 has ribs 15 which serve as pre-centering elements for the photoconductor drum and which extend beyond the width of the photoconductor drum 10.
- the first drum mounting flange has a conical projection 16 which cooperates with a corresponding conical projection 17 of the photoconductor drum 10.
- a counter-bearing to the first drum mounting flange is a second drum mounting flange 18 detachably connected to the drive shaft 13, which also has a conical projection 19 which in turn interacts with a corresponding conical projection 20 of the other end of the photoconductor drum 10.
- the second drum receptacle flange 18 has a through bore 21 and is supported on corresponding projections 24 of the drive shaft 13 via an annular sleeve 22 and a pressure ring 23.
- ring washers 25 which can be spread over the pressure ring 23 and thus center the through hole 21 of the second drum mounting flange 18 on the drive shaft 13.
- a tensioning device is provided which has a handwheel 26 which can be screwed onto the drive shaft 13.
- the handwheel 26 is secured by a ring on the second drum mounting flange and is supported on the second drum mounting flange 18 by a compression spring 27.
- An extension piece 28 presses against the pressure ring 23 when it is screwed in.
- the drive shaft itself and thus the drum mounting flange is on the one hand via a fixed bearing made of two bearing elements 29 and 30 and on the other hand via a detachable bearing gene bearing 31 mounted in the housing bracket 11.
- the counter bearing 31 consists of a bearing plate 34 which can be releasably connected to the housing support 11 by means of knurled screws 32 and centering pins 33 and which has a ball bearing 35 on the inside for mounting the drive shaft 13.
- Installation of the photoconductor drum 10 is accomplished as follows, starting from the functional position shown in FIG. 3 with the bearing plate 34 removed. First, the photoconductor drum 10 is pushed onto the ribs 15, which serve as pre-centering elements and which protrude into the area of the housing support 11. Then the second drum mounting flange is put on and the tensioning device is screwed to the handwheel 26. The compression spring 27 presses the photoconductor drum 10 with the conical projections 19 and 20 against the conical projections 16 and 17 of the first drum receiving flange via the second drum receiving flange 18.
- the spreading device consists of annular clamping disks 25 which are located directly on the through bore 21 of the second drum. support melchantflansches 18 and the drive shaft 13.
- annular clamping disks 25 which are located directly on the through bore 21 of the second drum. support melchantflansches 18 and the drive shaft 13.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3703942 | 1987-02-09 | ||
DE19873703942 DE3703942A1 (de) | 1987-02-09 | 1987-02-09 | Spielfreie lagereinrichtung fuer fotoleitertrommeln in druck- oder kopiergeraeten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0345270A1 true EP0345270A1 (de) | 1989-12-13 |
EP0345270B1 EP0345270B1 (de) | 1992-04-08 |
Family
ID=6320579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88901025A Expired - Lifetime EP0345270B1 (de) | 1987-02-09 | 1988-01-28 | Spielfreie lagereinrichtung für fotoleitertrommeln in druck- oder kopiergeräten |
Country Status (5)
Country | Link |
---|---|
US (1) | US5038172A (de) |
EP (1) | EP0345270B1 (de) |
JP (1) | JPH02502130A (de) |
DE (2) | DE3703942A1 (de) |
WO (1) | WO1988005931A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6382837B1 (en) | 1999-05-19 | 2002-05-07 | Oce Printing Systems Gmbh | Device and method for holding a drum in a printer or copier |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5283619A (en) * | 1991-12-20 | 1994-02-01 | Canon Kabushiki Kaisha | Developing apparatus and process cartridge having same |
US5218405A (en) * | 1992-06-29 | 1993-06-08 | Xerox Corporation | Photoreceptor drum runout control apparatus |
JPH0627859A (ja) * | 1992-07-08 | 1994-02-04 | Ricoh Co Ltd | 電子写真装置 |
DE4315274C1 (de) * | 1993-05-07 | 1994-06-30 | Siemens Nixdorf Inf Syst | Befestigungsvorrichtung für eine Trommel eines elektrografischen Druck- oder Kopiergerätes |
US5357321A (en) * | 1994-01-04 | 1994-10-18 | Xerox Corporation | Drum supporting hub and drum assembly |
JP3839932B2 (ja) | 1996-09-26 | 2006-11-01 | キヤノン株式会社 | プロセスカートリッジ及び電子写真画像形成装置及び電子写真感光体ドラム及びカップリング |
DE19722460C1 (de) * | 1997-05-28 | 1999-02-04 | Windmoeller & Hoelscher | Lagerung einer zylindrischen Walze |
ATE353046T1 (de) * | 2000-05-17 | 2007-02-15 | Eastman Kodak Co | Austauschbare zylinderelemente an elektrographischen druckeinheiten |
EP1868043B1 (de) * | 2000-05-17 | 2009-08-26 | Eastman Kodak Company | Vorrichtung zur Positionierung einer Zylinderhülse an einem Trägerkörper |
JP5021332B2 (ja) * | 2007-02-19 | 2012-09-05 | 株式会社リコー | 電子写真式印刷装置 |
JP5483177B2 (ja) * | 2009-02-27 | 2014-05-07 | 株式会社リコー | 感光体ドラム装置及びこれを用いた画像形成装置 |
JP5263676B2 (ja) | 2009-02-27 | 2013-08-14 | 株式会社リコー | 感光体ドラム及びこれを用いた画像形成装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2021409C3 (de) * | 1970-04-30 | 1980-04-10 | Agfa-Gevaert Ag, 5090 Leverkusen | Elektrostatisches Kopiergerät mit einer auswechselbaren Kopiertrommel |
US3926515A (en) * | 1972-07-31 | 1975-12-16 | Ricoh Kk | Photoreceptor changing apparatus for electrophotographic copying machines |
DE2615617A1 (de) * | 1976-04-09 | 1977-10-20 | Agfa Gevaert Ag | Elektrostatisches kopiergeraet |
US4120576A (en) * | 1977-04-04 | 1978-10-17 | Xerox Corporation | Drum support apparatus |
DE2717055A1 (de) * | 1977-04-18 | 1978-10-19 | Siemens Ag | Einrichtung zum lagern einer als zwischentraeger in einem nach dem elektrostatischen prinzip arbeitenden druck- oder kopiergeraet verwendeten trommel |
JPS5841517B2 (ja) * | 1980-12-09 | 1983-09-12 | 株式会社東芝 | 電子複写機 |
JPS5813559U (ja) * | 1981-07-17 | 1983-01-27 | 株式会社リコー | 円筒状感光体の取付け構造 |
-
1987
- 1987-02-09 DE DE19873703942 patent/DE3703942A1/de not_active Withdrawn
-
1988
- 1988-01-28 EP EP88901025A patent/EP0345270B1/de not_active Expired - Lifetime
- 1988-01-28 US US07/442,329 patent/US5038172A/en not_active Expired - Lifetime
- 1988-01-28 DE DE8888901025T patent/DE3869953D1/de not_active Expired - Lifetime
- 1988-01-28 JP JP63501284A patent/JPH02502130A/ja active Pending
- 1988-01-28 WO PCT/DE1988/000040 patent/WO1988005931A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO8805931A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6382837B1 (en) | 1999-05-19 | 2002-05-07 | Oce Printing Systems Gmbh | Device and method for holding a drum in a printer or copier |
Also Published As
Publication number | Publication date |
---|---|
US5038172A (en) | 1991-08-06 |
DE3869953D1 (de) | 1992-05-14 |
EP0345270B1 (de) | 1992-04-08 |
JPH02502130A (ja) | 1990-07-12 |
WO1988005931A1 (en) | 1988-08-11 |
DE3703942A1 (de) | 1988-08-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0345270A1 (de) | Spielfreie lagereinrichtung für fotoleitertrommeln in druck- oder kopiergeräten. | |
DE3436270C2 (de) | ||
DE3143781C2 (de) | Vorrichtung zum Zuführen einer Flüssigkeit auf die Zylinder einer Rotationdruckmaschine | |
DE19720795A1 (de) | Fadenbremse und damit ausgerüstete Textilmaschine und Fadenliefervorrichtung | |
DE68915774T2 (de) | Dynamisch stabile blattklemmvorrichtung für hochgeschwindigkeitsblatt-handhabungstrommeln. | |
DE60121765T2 (de) | Farbfilmhalter und Farbfilmspule | |
DE2951610C2 (de) | Farbbandkassette für eine Schreib- o.ä. Büromaschine | |
DE1954304B2 (de) | Vorrichtung zum loesbaren befestigen eines spulenkoerpers am ende einer antriebsspindel | |
DE3842482A1 (de) | Entwicklungseinheit fuer ein elektrostatisches aufzeichnungsgeraet | |
DE3212785C2 (de) | Offenend-spinnrotor | |
DE2021409C3 (de) | Elektrostatisches Kopiergerät mit einer auswechselbaren Kopiertrommel | |
EP1518810B1 (de) | Fadenbremse und damit ausgerütsete Textilmaschine und Fadenliefervorrichtung | |
DE3936459C1 (de) | ||
DE4434828C1 (de) | Bogenführungstrommel mit verstellbarem Außendurchmesser | |
EP0058847A2 (de) | Auf eine Schreib- oder ähnliche Büromaschine aufsetzbare Farbbandkassette | |
DE2616460C2 (de) | Vorrichtung zur Lichtabschirmung einer hin- und herbewegbaren optischen Abtasteinrichtung für Projektionskopiergeräte | |
DE3336919C2 (de) | Vorrichtung zum zonenweisen Verstellen eines Farbmessers | |
DE3221661C2 (de) | Schalteinrichtung für die Scharfeinstellung einer fotografischen Kamera | |
EP0184548A1 (de) | Farbbandkassette | |
DE4234332A1 (de) | Aufspannvorrichtung zum Befestigen einer biegsamen Druckform auf der Mantelfläche eines Zylinders | |
EP0429808A1 (de) | Vorrichtung zum positionsgenauen Spannen einer Druckplatte auf einem Druckzylinder | |
DE3432753C2 (de) | ||
DE19962419C2 (de) | Druckmaschinenzylinder | |
EP0359792A1 (de) | Spulvorrichtung | |
DE2847881A1 (de) | Einrichtung zum serienweisen ausdrucken von schriftzeichen mit einer vorrichtung zum fallenlassen von schriftzeichen, zur verwendung bei druckmaschinen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19890706 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT NL SE |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS NIXDORF INFORMATIONSSYSTEME AG |
|
17Q | First examination report despatched |
Effective date: 19910913 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19920408 |
|
REF | Corresponds to: |
Ref document number: 3869953 Country of ref document: DE Date of ref document: 19920514 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970120 Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
NLS | Nl: assignments of ep-patents |
Owner name: OCE PRINTING SYSTEMS GMBH |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980801 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19980801 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050128 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070125 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20070219 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070118 Year of fee payment: 20 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20080127 |