EP0045657A1 - Blattausrichtevorrichtung - Google Patents

Blattausrichtevorrichtung Download PDF

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Publication number
EP0045657A1
EP0045657A1 EP19810303553 EP81303553A EP0045657A1 EP 0045657 A1 EP0045657 A1 EP 0045657A1 EP 19810303553 EP19810303553 EP 19810303553 EP 81303553 A EP81303553 A EP 81303553A EP 0045657 A1 EP0045657 A1 EP 0045657A1
Authority
EP
European Patent Office
Prior art keywords
registration
corner
paddle wheels
sheet
paddle
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
EP19810303553
Other languages
English (en)
French (fr)
Other versions
EP0045657B1 (de
Inventor
Gerald Michael Garavuso
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of EP0045657A1 publication Critical patent/EP0045657A1/de
Application granted granted Critical
Publication of EP0045657B1 publication Critical patent/EP0045657B1/de
Expired 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
    • G03G15/60—Apparatus which relate to the handling of originals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1114—Paddle wheel

Definitions

  • This invention relates to apparatus for registering sheets in a corner defined by intersecting registration walls that form a 90° angle including a pair of paddle wheels located in position to drive sheets into said corner.
  • Apparatus according to the present invention is characterised in that paddle wheels are arranged at an angle of less than 90 0 to an adjacent registration wall, whereby documents alternately acted upon by said dual paddle wheels are promptly worked into registration with said corner.
  • the wheels are preferably angled 10° to 25° respectively from their adjacent registration wall and have two paddles on each wheel. The angles allow for smooth acquisition by the paddles and virtually eliminate paper jams, stalls and damage due to a perpendicular approach of paddles. Also, the speed paddle is faster than the incoming sheet speed which helps to prevent paper wrinkle and jams.
  • Figure 1 schematically depicts the various components of an illustrative electrophotographic printing machine incorporating a document corner registration apparatus according to the present invention therein. It will become evident from the following discussion that the registration system is equally well suited for use in a wide variety of devices and is not necessarily limited to its application to the particular embodiment shown herein. For example, the apparatus of the present invention may be adapted for use in compilers or readily employed in non-xerographic environments and sheet registration in general.
  • the electrophotographic printing machine employs a belt 10 having a photoconductive surface 12 deposited on a conductive substrate 14.
  • photoconductive surface 12 is made from a selenium alloy with conductive substrate 14 being made from nickel.
  • Belt 10 moves in the direction of arrow 16 to advance successive portions of photoconductive surface 12 sequentially through the various processing stations disposed about the path of movement thereof.
  • Belt 10 is entrained around stripper roller 18, tension roller 20, and drive roller 22.
  • Drive roller 22 is mounted rotatably in engagement with belt 10. Motor 24 rotates roller 22 to advance belt 10 in the direction of arrow 16. Roller 22 is coupled to motor 24 with a suitable means such as a belt drive.
  • Drive roller 22 includes a pair of opposed spaced flanges or edge guides 26. Edge guides 26 are mounted on opposite ends of drive roller 22 defining its space therebetween which determines the desired predetermined path of movement for belt 10. Edge guide 26 extends in an upwardly direction from the surface of roller 22. Preferably edge guides 26 are circular members or flanges.
  • Belt 10 is maintained in tension by a pair of springs (not shown), resiliently urging tension roller 20 against belt 10 with the desired spring force.
  • Both stripping roller 18 and tension roller 20 are mounted rotatably. These rollers are idlers which rotate freely as belt 10 moves in the direction of arrow 16.
  • a corona generating device As charging station A, a corona generating device, indicated generally by the reference numeral 28, charges photoconductor surface 12 of the belt 10 to a relatively high, substantially uniform potential.
  • a suitable corona generating device is described in U.S. Patent No. 2,836,725, issued to Vyverberg in 1958.
  • the charged portion of photoconductive surface 12 is advanced through exposure station B.
  • an original document 30 is positioned face down upon transparent platen 32.
  • Lamps 24 flash light rays onto original document 30.
  • the light rays reflected from the original document 30 are transmitted through lens 36 from a light image thereof.
  • the light image is projected onto the charged portion of the photoconductive surface 12 to selectively dissipate the charge thereon. This records an electrostatic latent image on photoconductive surface 12 which corresponds to the informational areas contained within original document 30.
  • belt 10 advances the electrostatic latent image recorded on photoconductive surface 12 to development station C.
  • a magnetic brush developer roller 38 advances a developer mix into contact with the electrostatic latent image.
  • the latent image attracts the toner particles from the carrier granules forming a toner powder image on photoconductive surface 12 of belt 10.
  • Belt 10 then advances the toner powder image to transfer station D.
  • a sheet of support material 46 is moved into contact with the toner powder image.
  • the sheet of support material is advanced to transfer station D by a sheet feeding apparatus 42.
  • sheet feeding apparatus 42 includes a feed roll 44 contacting the upper sheet 46 of the stack. Feed roll 44 rotates so as to advance the uppermost sheet from the stack into transport 91.
  • the transport directs the advancing sheet of support material into contact with the photoconductive surface 12 of belt 10 in a timed sequence so that the toner powder image developed thereon contacts the advancing sheet of support material at transfer station D.
  • Transfer station D includes a corona generating device 50 which emits ions onto the backside of sheet 46. This attracts the toner powder image from the photoconductive surface 12 to sheet 45. After transfer, the sheet continues to move in the direction of arrow 52 onto a conveyor (not shown) which advances the sheet to fusing station E.
  • Fusing station E includes a fuser assembly, indicated generally by the reference number 54, which permanently affixes the transferred toner powder image to sheet 46.
  • fuser assembly 54 includes a heated fuser roller 56 and a backup roller 58.
  • Sheet 46 passes between fuser roller 56 and backup roller 58 with the toner powder image contacting fuser roller 56. In this manner, the toner powder image is permanently affixed to sheet 46.
  • shoot 60 guides the advancing sheet 45 to catch tray 62 for removal from the printing machine by the operator.
  • Cleaning station F includes a rotatably mounted fiberous brush 64 in contact with the photoconductive surface 12. The particles are cleaned from photoconductive surface 12 by the rotation of brush 54 in contact therewith. Subsequent to cleaning, a discharge lamp (not shown) floods photoconductive surface 12 with light to dissipate any residual electrostatic charge remaining thereon prior to the charging thereof for the next successive image cycle.
  • Figure 1 shows a document corner registration system 70 that employs paddle wheels with more than one blade mounted on either side of a corner and formed at an angle of less than 90° by a bent flexible shaft.
  • This device enables effective registration of a wide range of sheet input positions and orientations by supplying two driving forces at large angles to each other.
  • the planar blades or paddles 80 are made of urethane, silicone or other flexible, frictional material and are maintained 90° out of phase with each other. Therefore, only one blade contacts the document through the drive sweep uninhibited by the second wheel.
  • at least one blade can be made to contact the stack at all times thereby providing continuous control to reduce bounce off the side wall or retaining fingers of the tray holding the stack.
  • the document contacts the upstream blade first to reduce registration time.
  • an improved corner registration system includes two adjacent but differently angled registration paddle wheels.
  • Each of the paddle wheels are at angles of less than 90° in relation to its adjacent side wall, however, the paddle wheels are preferably angled at approximately 10° to 25° from its adjacent registration wall.
  • the two wheels are synchronized so that only one blade on one wheel contacts the document at one time. In this way, the document is positively worked into corner registration with haste.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
EP19810303553 1980-08-04 1981-08-04 Blattausrichtevorrichtung Expired EP0045657B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17477580A 1980-08-04 1980-08-04
US174775 1980-08-04

Publications (2)

Publication Number Publication Date
EP0045657A1 true EP0045657A1 (de) 1982-02-10
EP0045657B1 EP0045657B1 (de) 1984-07-04

Family

ID=22637472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810303553 Expired EP0045657B1 (de) 1980-08-04 1981-08-04 Blattausrichtevorrichtung

Country Status (5)

Country Link
EP (1) EP0045657B1 (de)
JP (1) JPS5758174A (de)
BR (1) BR8104963A (de)
CA (1) CA1162102A (de)
DE (1) DE3164566D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099247A2 (de) * 1982-07-07 1984-01-25 Xerox Corporation Apparat zur passgenauen Anlage von Bogen
DE4229425A1 (de) * 1992-09-03 1994-03-10 Kodak Ag Vorrichtung zum stapelweisen Ablegen und Ausrichten von einzeln zugeführten Blättern
DE19848972A1 (de) * 1998-10-23 2000-05-04 Oce Printing Systems Gmbh Vorrichtung zum Ausrichten von Blättern

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4326026B4 (de) * 1993-08-03 2004-01-29 Heidelberger Druckmaschinen Ag Vorrichtung zum Ausrichten von Blättern

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630516A (en) * 1970-03-23 1971-12-28 Stromberg Datagraphix Inc Sheet-feeding apparatus
GB1427357A (en) * 1973-03-01 1976-03-10 Xerox Corp Sheet feeding method
US4029309A (en) * 1975-10-29 1977-06-14 Xerox Corporation Set transport and stacker
GB1492168A (en) * 1975-05-30 1977-11-16 Ibm Document reproduction machine
GB1496079A (en) * 1974-09-05 1977-12-21 Xerox Corp Sheet feeding apparatus
US4179117A (en) * 1977-12-30 1979-12-18 International Business Machines Corporation Paper alignment rollers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630516A (en) * 1970-03-23 1971-12-28 Stromberg Datagraphix Inc Sheet-feeding apparatus
GB1427357A (en) * 1973-03-01 1976-03-10 Xerox Corp Sheet feeding method
GB1496079A (en) * 1974-09-05 1977-12-21 Xerox Corp Sheet feeding apparatus
GB1492168A (en) * 1975-05-30 1977-11-16 Ibm Document reproduction machine
US4029309A (en) * 1975-10-29 1977-06-14 Xerox Corporation Set transport and stacker
US4179117A (en) * 1977-12-30 1979-12-18 International Business Machines Corporation Paper alignment rollers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099247A2 (de) * 1982-07-07 1984-01-25 Xerox Corporation Apparat zur passgenauen Anlage von Bogen
EP0099247A3 (en) * 1982-07-07 1985-11-27 Xerox Corporation Sheet registration apparatus and device
DE4229425A1 (de) * 1992-09-03 1994-03-10 Kodak Ag Vorrichtung zum stapelweisen Ablegen und Ausrichten von einzeln zugeführten Blättern
DE19848972A1 (de) * 1998-10-23 2000-05-04 Oce Printing Systems Gmbh Vorrichtung zum Ausrichten von Blättern
WO2000024659A2 (de) * 1998-10-23 2000-05-04 Oce Printing Systems Gmbh Vorrichtung zum ausrichten von blättern
WO2000024659A3 (de) * 1998-10-23 2000-11-16 Oce Printing Systems Gmbh Vorrichtung zum ausrichten von blättern
DE19848972C2 (de) * 1998-10-23 2002-08-29 Oce Printing Systems Gmbh Vorrichtung zum Ausrichten von Blättern
US6676124B1 (en) 1998-10-23 2004-01-13 OCé PRINTING SYSTEMS GMBH Device for aligning sheets

Also Published As

Publication number Publication date
BR8104963A (pt) 1982-04-20
EP0045657B1 (de) 1984-07-04
DE3164566D1 (en) 1984-08-09
JPS5758174A (en) 1982-04-07
CA1162102A (en) 1984-02-14

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