EP1048462B1 - Druckvorrichtung - Google Patents
Druckvorrichtung Download PDFInfo
- Publication number
- EP1048462B1 EP1048462B1 EP00108074A EP00108074A EP1048462B1 EP 1048462 B1 EP1048462 B1 EP 1048462B1 EP 00108074 A EP00108074 A EP 00108074A EP 00108074 A EP00108074 A EP 00108074A EP 1048462 B1 EP1048462 B1 EP 1048462B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- bearing part
- sheath
- elevator
- bearing
- 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
Links
- 238000005096 rolling process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/20—Supports for bearings or supports for forme, offset, or impression cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/10—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders
- B41F27/105—Devices for attaching printing elements or formes to supports for attaching non-deformable curved printing formes to forme cylinders for attaching cylindrical printing formes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
- B41P2227/20—Means enabling or facilitating exchange of tubular printing or impression members, e.g. printing sleeves, blankets
- B41P2227/21—Means facilitating exchange of sleeves mounted on cylinders without removing the cylinder from the press
Definitions
- the invention relates to a printing device according to the preamble of claim 1.
- Photoconductor drums are used in electrophotography whose outer surfaces each have a photoconductive layer applied to them Exposure to light can be discharged equivalent to the image.
- the recording materials have a limited useful life, which is why highly productive Printing devices the complete cylinder or layer support for the Recording materials have to be changed relatively frequently.
- Multi-color printing devices are special in changing the recording materials time-consuming. Recording materials are particularly sensitive. The Recording materials should not be touched and not longer than necessary Be exposed to ambient light. Therefore, photoconductor drums with special Protective covers and with handles for installation in a printing device Mistake.
- a photoconductor drum is used for design reasons often in parallel to the axis of rotation of the drum.
- the object is achieved with a printing device which corresponds to the features of the Claim 1 is formed.
- the sleeve-shaped elevator has next to the actual functional area used in printing on its protruding part a clamping surface, which can be smaller in diameter than the outer surface of the Functional surface.
- a holding or clamping device engages on the protruding part for the elevator, which then comes into action when the friction or form fit between the Elevator and the lateral surface of a cylinder carrying the elevator, e.g. B. by generating an air cushion is lifted. While the elevator, e.g. B.
- the elevator can be held on the protruding part by the holding device be by acting on the inside of the protruding part of a clamping device, which after contains externally movable elements, so that the projecting part is stretched so far that he lies on the outer circumference against a clamping surface on a bearing part for the Cylinder is incorporated in a side wall of a printing device.
- the usage an air cushion between the inside of the elevator and the outside of the cylinder be given only as an example.
- the holding forces between the elevator and the cylinder are temporarily suspended, which is the case with one iron-metallic elevator and magnetic clamping by lifting the Magnetic field can happen or by moving out rolling elements, so that the high Static friction between the elevator and cylinder is replaced by a low rolling friction.
- the actuation of the clamping device for the edge of the elevator can be done by hand Actuation of an actuating lever that is easily accessible from the outside. It can also a holding or clamping device are provided, the holding or clamping forces generated by a pneumatic or hydraulic system. Due to the structural Unification of the holding device and the bearing part that serves from the side wall Removable bearing part at the same time as an assembly aid when changing the elevator. The bearing part is entirely from the side wall and from the elevator Bearing journal of the cylinder removed.
- the elevator change can be fully automated when on the printing device outside manipulation devices are provided, which the bearing part in the direction of Move the axis of rotation laterally.
- the invention is particularly in Printing devices applicable in which the elevator has a charge-absorbing layer having.
- the holding devices for the Lifts are provided on a common storage part. This allows the two Elevators can be changed at the same time.
- Multi-cylinder arrangements can Devices are provided which separate the cylinders from each other before the elevator change Off.
- the Cylinder 1 shows a cylinder 1 of an electrophotographic printing device.
- the Cylinder 1 is mounted in side walls 2, 3.
- the cylinder 1 has a bearing pin 4 with a relatively large tenon length w.
- the bearing pin 4 is with two roller bearings 5, in a bore 7 of the side wall 2 mounted.
- the roller bearings 5, 6 are with a Spacer 8 spaced from each other, whereby the bearing pin 4 in the axial direction 9th receives a large span w in the side wall 2.
- In the axial direction 9 is the Bearing pin 4 by means of a washer 10, a nut 11 and a ring 12 against the Side wall 2 is screwed, secured against moving.
- the side wall 3 facing bearing journal 13 is seated in a clearance fit of an inner bearing ring 14 Rolling bearing 15.
- the rolling bearing 15 is supported on the outside in a bore of a bearing part 16, which is releasably attached to the outside of the side wall 3.
- the bore of the bearing part 16 is concentric to the axis of rotation 17 of the cylinder 1.
- a carrier sleeve 19 is pulled up.
- the carrier sleeve 19 has outside in Area of the outer surface 18 a functional surface, for. B. photoconductive surface 20.
- Die Carrier sleeve 19 stands on the side assigned to side wall 3 above jacket surface 18 in front.
- the protruding part 21 of the carrier sleeve 19 is smaller than the outer diameter the diameter in the area of the outer surface 18.
- the bore in the bearing part 16 has one Paragraph 22, in which a cam member 23 can be rotated concentrically to the axis of rotation 17 is stored.
- the curve member 23 has uniformly distributed on its circumference Chamfers 24 for roller-shaped rolling elements 25.
- the axes of rotation of the rolling elements 25 are parallel to the axis of rotation 17 of the cylinder 1.
- the cam member 23 is against Displacement in the direction of its axis of rotation by an actuating lever 26 in the bearing part 16 secured.
- Actuating lever 26 is provided which protrudes outside of the bearing part 16.
- a 1st step is the operating lever 26 which is rotatable in a radial slot in the Bearing part 16 is arranged, brought into the clamping position.
- the Rotation of the cam member 23 move the rolling elements 25 radially outward until they on Inner diameter come to rest on the projecting part 21 of the carrier sleeve 19.
- the protruding part 21 in stretched its elastic range until the protruding part with its The outer surface rests on a clamping surface 28 of the bearing part 16 and is fixed.
- Carrier sleeve 19 In a further step, between the outer surface 18 and the inner surface Carrier sleeve 19 generates an air cushion via air channels 31. By a slight radial Elongation of the carrier sleeve 19 is the adhesion between the outer surface 18 and the Carrier sleeve 19 canceled.
- the next step is the attachment of the bearing part 16 solved on the side wall 3.
- the bearing part 16 can be in the direction of the axis of rotation 17 be guided away from the side wall 3 until the between rolling elements 25 and Clamping surface 28 held carrier sleeve 19 is completely removed from the cylinder 1.
- the bearing part 16 When the bearing part 16 is moved away, the support of the cylinder 1 on the journal 13 canceled.
- the cylinder 1 is only held in the side wall 2 in this state, with the large span w the deformations of the bearing journal 4 bearing Items in stays within the allowable limits.
- the carrier sleeve 19 can by releasing the clamp on the bearing part 16 without Hand touch placed in a predetermined location or in a container.
- the carrier sleeve 19 can be brought into any position.
- corresponding handles can be formed on the bearing part 16.
- the cylinder 1 is fitted with a new carrier sleeve 19 in reverse Sequence.
- the new carrier sleeve 19 is by turning the actuating lever 26 in Bearing part 16 clamped.
- the carrier sleeve 19 is over the outer surface 18 turned over. This is said when slipped over the lateral surface 18 Air cushion rebuilt so that the carrier sleeve 19 easily over the outer surface 18 can slide.
- the bearing part 16 has been fixed in the side wall 3, this can Air cushions are lifted and the clamping of the protruding part 21 on the Clamping surface 28 can be released.
- the cylinder 1 is then freely rotatable.
- the protruding one Part 21 runs in a free space between the clamping surface 28 and the rolling elements 25.
- roller clamp locking mechanism for clamping the protruding part 21 can be used other mechanical structures that z. B. by means of pneumatic or magnetic actuators elements in the radial direction make that clamp the support sleeve 19 on the protruding part 21 on the bearing part 16.
- the cylinder 1 is driven by frictional engagement with a transfer cylinder 29 for toner, which also has an elastic elevator 30.
- this elevator 30 can be replaced, as can the carrier sleeve 19.
- a protruding part is also formed on the elevator 30, then The clamping devices for the carrier sleeve 19 and the elevator 30 can be of the same type be formed, it would be possible to use the clamping device on a single To provide bearing part, so that the carrier sleeve 19 and the elevator 30 changed simultaneously can be.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
- Fig.1:
- ein Schema einer Zylinderlagerung,
- Fig.2:
- eine Schnittdarstellung der Fig. 1 entlang der Linie II-II.
- 1
- Zylinder
- 2, 3
- Seitenwände
- 4
- Lagerzapfen
- 5, 6
- Wälzlager
- 7
- Bohrung
- 8
- Distanzstück
- 9
- Richtung
- 10
- Scheibe
- 11
- Mutter
- 12
- Ring
- 13
- Lagerzapfen
- 14
- Lagerring
- 15
- Wälzlager
- 16
- Lagerteil
- 17
- Rotationsachse
- 18
- Mantelfläche
- 19
- Trägerhülse
- 20
- Oberfläche
- 21
- Teil
- 22
- Absatz
- 23
- Kurvenglied
- 24
- Anlaufschräge
- 25
- Wälzkörper
- 26
- Betätigungshebel
- 27
- Richtung
- 28
- Klemmfläche
- 29
- Übertragungszylinder
- 30
- Aufzug
- 31
- Luftkanäle
Claims (4)
- Druckvorrichtung,
enthaltend einen in Seitenwänden gelagerten Zylinder mit einem durch eine Öffnung einer Seitenwand hindurch auswechselbaren, hülsenförmigen Aufzug,
dadurch gekennzeichnet, daß auf der Mantelfläche (18) des Zylinders (1) ein lösbar befestigter Aufzug (19) vorgesehen ist, der auf der Seite der Öffnung seitlich am Zylinder (1) übersteht,
daß eine am Inneren des überstehenden Teiles (21) des Aufzuges (19) an- und abstellbare Haltevorrichtung (23, 24, 25, 26, 28) für den Aufzug (19) vorgesehen ist, wobei die Haltevorrichtung (23, 24, 25, 26, 28) mit einem Lagerteil (16) des Zylinders (1) baulich vereinigt ist,
und daß zum Wechseln des Aufzuges das Lagerteil (16) in eine die Öffnung freigebende Lage positionierbar ist. - Druckvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Aufzug (19) im Bereich der Mantelfläche (18) eine Ladung aufnehmende Oberfläche (20) aufweist und am überstehenden Teil (21) Klemmflächen ausgebildet sind, die bei Betätigung der Haltevorrichtung (23, 24, 25, 26, 28) gegen eine Klemmfläche (28) des Lagerteils (16) anliegt. - Druckvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Aufzug (30) im Bereich der Mantelfläche (18) eine Toner übertragende Oberfläche aufweist. - Druckvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß das Lagerteil (16) in Richtung der Rotationsachse (17) des Zylinders (1) um einen Betrag verschiebbar ist, der größer als die Breite der Mantelfläche (18) ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19918943 | 1999-04-27 | ||
| DE19918943A DE19918943A1 (de) | 1999-04-27 | 1999-04-27 | Druckvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1048462A1 EP1048462A1 (de) | 2000-11-02 |
| EP1048462B1 true EP1048462B1 (de) | 2003-07-09 |
Family
ID=7905916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00108074A Expired - Lifetime EP1048462B1 (de) | 1999-04-27 | 2000-04-25 | Druckvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6240267B1 (de) |
| EP (1) | EP1048462B1 (de) |
| JP (1) | JP2000330454A (de) |
| DE (2) | DE19918943A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7211358B2 (en) * | 2004-04-30 | 2007-05-01 | Eastman Kodak Company | Image cylinder sleeve for an electrophotographic machine and method for producing same |
| US20080164537A1 (en) * | 2007-01-04 | 2008-07-10 | Jun Cai | Integrated complementary low voltage rf-ldmos |
| US7125777B2 (en) * | 2004-07-15 | 2006-10-24 | Fairchild Semiconductor Corporation | Asymmetric hetero-doped high-voltage MOSFET (AH2MOS) |
| JP4642067B2 (ja) * | 2007-12-27 | 2011-03-02 | 株式会社ミヤコシ | 電子写真印刷機 |
| JP5693213B2 (ja) * | 2010-01-13 | 2015-04-01 | キヤノン株式会社 | ドラム支持機構、プロセスカートリッジ及び電子写真画像形成装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2615617A1 (de) * | 1976-04-09 | 1977-10-20 | Agfa Gevaert Ag | Elektrostatisches kopiergeraet |
| JP2645992B2 (ja) * | 1986-05-20 | 1997-08-25 | 富士通株式会社 | 画像形成装置 |
| JP2544237B2 (ja) * | 1990-07-09 | 1996-10-16 | 三田工業株式会社 | 画像生成機における回転ドラム構造 |
| US5241905A (en) * | 1992-10-27 | 1993-09-07 | Heidelberg Harris Inc. | Printing unit with releasable bearing clamp |
| US5722013A (en) * | 1995-03-17 | 1998-02-24 | Konica Corporation | Color image forming apparatus having a supporting member and a plurality of image exposure devices mounted inside a cylindrical image forming body |
-
1999
- 1999-04-27 DE DE19918943A patent/DE19918943A1/de not_active Withdrawn
-
2000
- 2000-03-24 US US09/534,468 patent/US6240267B1/en not_active Expired - Lifetime
- 2000-04-24 JP JP2000123082A patent/JP2000330454A/ja not_active Withdrawn
- 2000-04-25 DE DE50002795T patent/DE50002795D1/de not_active Expired - Fee Related
- 2000-04-25 EP EP00108074A patent/EP1048462B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE50002795D1 (de) | 2003-08-14 |
| EP1048462A1 (de) | 2000-11-02 |
| JP2000330454A (ja) | 2000-11-30 |
| DE19918943A1 (de) | 2000-11-02 |
| US6240267B1 (en) | 2001-05-29 |
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