EP1868043A2 - Dispositif de positionnement d'une douille de cylindre sur un corps porteur - Google Patents

Dispositif de positionnement d'une douille de cylindre sur un corps porteur Download PDF

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Publication number
EP1868043A2
EP1868043A2 EP07017815A EP07017815A EP1868043A2 EP 1868043 A2 EP1868043 A2 EP 1868043A2 EP 07017815 A EP07017815 A EP 07017815A EP 07017815 A EP07017815 A EP 07017815A EP 1868043 A2 EP1868043 A2 EP 1868043A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
sleeve
positioning
arrangement according
cylinder arrangement
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
EP07017815A
Other languages
German (de)
English (en)
Other versions
EP1868043A3 (fr
EP1868043B1 (fr
Inventor
Christian Compera
Gregory Kowalski
James Shifley
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
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 filed Critical Eastman Kodak Co
Priority claimed from EP01110412A external-priority patent/EP1156401A3/fr
Publication of EP1868043A2 publication Critical patent/EP1868043A2/fr
Publication of EP1868043A3 publication Critical patent/EP1868043A3/fr
Application granted granted Critical
Publication of EP1868043B1 publication Critical patent/EP1868043B1/fr
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
    • 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
    • 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 a device for positioning a cylinder sleeve on a carrier body, in particular for positioning a cylinder sleeve with a functional layer received on the lateral surface, for example a photoelectric layer.
  • US 5,215,013 refers to a device for noise damping when mounting a tubular blanket on the peripheral surface of a printing forme cylinder.
  • This device is preferably used on the printing unit of an offset printing press, which is equipped with channelless printing cylinder.
  • the blanket sleeve is expandable in the circumferential direction, for which purpose the inside of the blanket sleeve is subjected to a pneumatically generated pressure. Thereafter, the expanded blanket sleeve is laterally telescoped over the lateral surface of the cylinder.
  • the blanket sleeve is provided with a damping ring for damping the noise caused by the lateral leakage of the compressed air.
  • the cylinder jacket surface is at the point at which the blanket sleeve is attached to the side of the cylinder jacket for sliding, provided with outlet openings which generate and maintain the air cushion when pushing the blanket sleeve over the lateral surface of the cylinder.
  • US 5,649,267 refers to a cylinder assembly that can be used in a printing unit.
  • a substantially sleeve-shaped configured element is used, on the lateral surface of a toner image is generated.
  • the drum shell surface comprises open ends whose end faces are supported by the peripheral surface supporting disc-shaped peripheral surfaces.
  • the end faces, with which the openings of the cylinder-shaped configured lateral surface are closable, are cooled before assembly, in order to be subsequently let into the openings of the lateral surface.
  • the frontals on this Be shrunk into the cylinder surface, each with axle bearings, in which a drum arrangement in the axial direction passing through axis, designed as a carrier body, is added.
  • the eccentricity of the drum shell can be preset relative to the axis of rotation.
  • the invention has for its object to provide a releasable attachment of an end face of the carrier body and to prevent tilting or tilting of the functional layer-bearing sleeve during their assembly.
  • the means for pre-positioning contact the cylinder sleeve on the inner wall. This ensures that it is aligned over its entire axial extent, in particular in the initial area, where tilting may have adverse consequences, that it can be strictly axially aligned, postponed.
  • the devices for pre-positioning of the cylinder sleeve are accommodated on a cylindrical element.
  • the single-part or multi-part executable sleeve-shaped element can be accommodated in a simple manner on a cylinder assembly passing through the support body and is detachably mounted on the support body and thus easily replaceable.
  • the sleeve-shaped element can be stored on the carrier body passing through the cylinder assembly.
  • the means for pre-positioning of the cylinder sleeve can thus also be an easy replacement of the sleeve-shaped element.
  • the devices for pre-positioning of the cylinder sleeve can be designed as extending from the wall of the sleeve-shaped element to the inner wall of the cylinder sleeve to be positioned extending.
  • the devices for pre-positioning the cylinder sleeve can extend in the radial direction to the carrier body over its entire axial length. However, they can also be divided into individual sections over the axial length of the carrier body or the sleeve-shaped element.
  • a simplification of the assembly of a cylinder body or the replacement can be achieved, that the means for pre-positioning of the cylinder sleeve are provided parallel to the axis of rotation of the carrier body.
  • pre-positioning can achieve a centering of the lateral surface of the cylinder sleeve, wherein the final centering is carried out by a bias of provided on the front sides provided with bevels centering; a centering to increase the accuracy centering can also be done by a lateral bracing of the end faces against each other.
  • the means for pre-positioning the cylinder sleeve can contact the inner wall of the cylinder sleeve frictionally.
  • Longitudinal grooves could be formed very easily on the inner surface of the sleeve in a particularly advantageous manner.
  • longitudinal grooves and slot-shaped openings in the inner wall of the cylinder sleeve on the surface of the functional layer is applied in the form of an electrographic coating can be formed.
  • a weight reduction of the proposed cylinder arrangement can be achieved, in particular, by creating cavities between the individual web-shaped devices extending radially in the radial direction for pre-positioning the cylinder sleeve. Seen over the entire circumference of the cylinder arrangement, for example, six web-shaped radial walls can be provided, which are positioned at an angle of 60 ° to each other. Instead of the here, as well as the subsequent embodiments trained six webs four or eight webs oriented by 90 ° or 45 ° to each other, form inside the drum.
  • the web-shaped devices for pre-positioning can overlap the entire axial extension of the cylinder sleeve whose axial extent corresponds exactly to the distance of the end faces of the cylinder assembly.
  • a continuous contact between the ends of the web-shaped devices for pre-positioning of the cylinder sleeve and the inner wall of the cylinder sleeve and bridge-like sections can be provided with individual interruptions in the direction of the axial extent of the cylinder sleeve.
  • the outer surface of the cylinder sleeve may be a photoelectric layer.
  • the cylinder arrangement can be used, for example, for electrographic printing units in which, after a certain permissible comparison of the surface of the functional layer, an exchange of this layer is required.
  • the printing units, in which the cylinder arrangement proposed according to the invention can be used can process web or sheet-like materials, wherein in a printing unit quite a number of cylinders with a replaceable cylinder sleeve can be provided.
  • a support body 1 On a support body 1, which is penetrated by a bore and extends substantially rotationally symmetrical to its axis of rotation, two bearing journals 2, 3 are formed.
  • a first end face 4 and a second end face 7 are mounted in the region of seating surfaces.
  • the end face 7 is fixed by a stop 31 in the axial direction on the support body 1, while the first end face 4 is secured to its seat on the circumference of the support body 1 by means of a releasable tension.
  • centering surfaces 5 are formed on the peripheral surfaces, which can be designed as chamfers in the illustration of FIG.
  • the chamfers are oriented inclined at the first end face 4 and the second end face 7 in each case to the interior of the cylinder assembly.
  • Complementary to serving as centering 5 chamfers of the first end face 4 and the second end face 7 bevels 15 are formed on the cylindrical sleeve 6 to be fixed there.
  • the cylinder sleeve 6 can be frictionally received on the end faces 4 and 7 via the positionable end face 4.
  • a functional layer 16 is formed, which may be, for example, a photoelectric layer.
  • Upon rotation of the nut 11 is an axial bias of the pressure body 12, which causes a deformation of the sleeve 13 in the radial direction.
  • the first end face 4 at its seat on the Carrier body 1 releasably secured.
  • a sleeve 17 is mounted on the circumference of the carrier body 1. At the periphery of the sleeve 17 are extending in the radial direction extending means for pre-positioning of the cylinder sleeve 6 are executed.
  • FIG. 2 shows a cross section through the cylinder arrangement according to FIG. From Figure 2, the position of the sleeve 17 can be seen, which is received on the circumference of the carrier body 1.
  • the carrier body 1 is provided with lateral bearing journals 2 and 3, with which it is mounted in the side walls of a printing unit, either driven by means of a gear train or via a direct drive.
  • the tops of the respective web-shaped pre-positioning means 21; 25, 26, 27, 28 and 29 can be such that they have a chamfer in the initial area, on which the cylinder sleeve 6 can be positioned and aligned laterally pushed onto the web-shaped elements. This can be done with remaining in the machine rear second end face 7, which is fixed to the carrier body 1 in its axial position.
  • a chamfer on the respective devices for pre-positioning allows tilting and tilt-free sliding of the cylinder sleeve 6 with functional layer 16 formed thereon in the lateral direction toward the second end face 7 remaining in the printing press.
  • the carrier body 1 is to be positioned with sleeve 17 received so that after removal of the end face 4 by relaxation of the nut 11 and concomitant relaxation of the pressure piece 12, the deformable sleeve 13 is relieved, so that the first end face 4 via the bearing pin 3 of their seat on the periphery of the carrier body 1 can be removed laterally.
  • the cylinder sleeve 6 can laterally beyond the web-shaped elements 21; 25, 26, 27, 28 and 29 are withdrawn, wherein the second end face 7 can remain positioned in its axial position on the carrier body 1.
  • the second end face 7 is axially fixed on the one hand by the provided on the circumference of the support body 1 sleeve 17 and the stop surface 31.
  • a cylindrical sleeve 6 with renewed functional layer 16 formed thereon can be repositioned on the carrier body 1 by pushing it axially.
  • the cylinder sleeve 6 is placed on the means for pre-positioning of the cylinder sleeve 6 in a horizontal position and can now be pushed laterally on the web-shaped devices for pre-positioning.
  • the first end face is braced by means of the nut 11 and the deformable sleeve 13 on its seat on the support body 1.
  • the eccentricity of the functional surface 16 with respect to the axis of rotation of the carrier body 1 can be adjusted precisely.
  • the inner wall 23 of the cylinder sleeve 6 may be provided, for example, with longitudinal grooves or slots extending in the axial direction. Also punctiform projections and latching connections between the end portions of the radially extending devices 21; 25, 26, 27, 28 and 29 for pre-positioning and the inner wall 23 of the sleeve 6 are conceivable.
  • the sleeve 17, on which the devices 21; 25, 26, 27, 28 and 29 for pre-positioning are received extending in the radial direction may be made of plastic or made of plastics with metallic reinforcement.
  • the material from which the cylinder sleeve 6, formed in wall thickness 24, there may be either plastic with a metallic coating or a metallic sleeve.
  • the individual web surfaces 30 can be penetrated by openings in order to save weight and material. Instead of a continuous contact surface at the radial end of the devices 21; 25, 26, 27, 28 and 29 for pre-positioning, they can contact the inner wall 23 of the cylinder sleeve 6 only in sections, so that open spaces between the individual wall 23 contacting end areas remain. With a configuration of this nature, which is not shown here in detail, can be achieved in addition to a stiffening effect, a weight saving of such a cylinder arrangement.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP07017815A 2000-05-17 2001-04-27 Dispositif de positionnement d'une douille de cylindre sur un corps porteur Expired - Lifetime EP1868043B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20496600P 2000-05-17 2000-05-17
EP01110412A EP1156401A3 (fr) 2000-05-17 2001-04-27 Dispositif pour positionner un manchon cylindrique sur un corps de support

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP01110412A Division EP1156401A3 (fr) 2000-05-17 2001-04-27 Dispositif pour positionner un manchon cylindrique sur un corps de support

Publications (3)

Publication Number Publication Date
EP1868043A2 true EP1868043A2 (fr) 2007-12-19
EP1868043A3 EP1868043A3 (fr) 2008-06-04
EP1868043B1 EP1868043B1 (fr) 2009-08-26

Family

ID=38687444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07017815A Expired - Lifetime EP1868043B1 (fr) 2000-05-17 2001-04-27 Dispositif de positionnement d'une douille de cylindre sur un corps porteur

Country Status (1)

Country Link
EP (1) EP1868043B1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5188229A (en) * 1975-01-31 1976-08-02 Fukushakino kankodoramugaidosochi
JP2645992B2 (ja) * 1986-05-20 1997-08-25 富士通株式会社 画像形成装置
DE3703942A1 (de) * 1987-02-09 1988-08-18 Siemens Ag Spielfreie lagereinrichtung fuer fotoleitertrommeln in druck- oder kopiergeraeten
US5151737A (en) * 1990-06-04 1992-09-29 Eastman Kodak Company Photoconductive drum having expandable mount
JPH0792855A (ja) * 1993-09-22 1995-04-07 Seiko Instr Inc 感光体ドラム
JPH09325669A (ja) * 1996-06-04 1997-12-16 Konica Corp 像露光手段内蔵の像形成体ユニットの組立方法及び分離方法

Also Published As

Publication number Publication date
EP1868043A3 (fr) 2008-06-04
EP1868043B1 (fr) 2009-08-26

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