US3923298A - Copying paper feeding device for electronic copying apparatus - Google Patents

Copying paper feeding device for electronic copying apparatus Download PDF

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Publication number
US3923298A
US3923298A US401714A US40171473A US3923298A US 3923298 A US3923298 A US 3923298A US 401714 A US401714 A US 401714A US 40171473 A US40171473 A US 40171473A US 3923298 A US3923298 A US 3923298A
Authority
US
United States
Prior art keywords
copying paper
drum
side edge
copying
feeding device
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
Application number
US401714A
Other languages
English (en)
Inventor
Tsutomu Ishida
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.)
Canon Inc
Canon Finetech Nisca Inc
Original Assignee
Copyer Co Ltd
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 Copyer Co Ltd filed Critical Copyer Co Ltd
Application granted granted Critical
Publication of US3923298A publication Critical patent/US3923298A/en
Assigned to CANON INC., 30-2 SHIMOMARUKO 3-CHOME OHTA-KU, TOKYO 146, JAPAN reassignment CANON INC., 30-2 SHIMOMARUKO 3-CHOME OHTA-KU, TOKYO 146, JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: COPYER CO. LTD.
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
    • G03G15/65—Apparatus which relate to the handling of copy material
    • G03G15/6532—Removing a copy sheet form a xerographic drum, band or plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/54—Article strippers, e.g. for stripping from advancing elements
    • B65H29/56—Article strippers, e.g. for stripping from advancing elements for stripping from elements or machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S271/00—Sheet feeding or delivering
    • Y10S271/90—Stripper

Definitions

  • This invention relates to a copying paper feeding device for electronic copying apparatus, adapted to apply a copying paper on the photosensitive surface of a rotation drum and, after an image carried on the rotation drum is transferred to the copying paper, separating the image bearing copying paper from the rotation drum.
  • a copying paper is intimately carried on the photosensitive surface of a rotation drum so that an image preliminarily formed on the drum is transferred to the copying paper.
  • the image bearing copying paper is required to be separated from the rotation drum for the next process.
  • a vacuum suction means is adapted. That is, a copying paper intimately carried on a rotation drum is separated under a suction force using a vacuum pump.
  • a vacuum suction means is adapted. That is, a copying paper intimately carried on a rotation drum is separated under a suction force using a vacuum pump.
  • An object of this invention is to provide a simple, inexpensive, small-sized copying paper feeding device for electronic copying apparatus which assures a positive separation of a copying paper from a rotation drum.
  • a copying paper feeding device for electronic copying apparatus provided with a rotation drum having a photosensitive surface
  • said copying paper feeding device including means for applying a copying paper onto the photosensitive surface of the rotation drum with one side edge of the copying paper extending from one side edge of the rotation drum, and means for separating the copying paper from the rotation drum by slidingly contacting with the inner surface of said one side edge of the copying paper.
  • FIG. 1 is a front view showing a copying paper feeding device according to this invention
  • FIG. 2 is a side view of FIG. 1;
  • FIG. 3 is a front view showing a modified separating mechanism of the copying paper feeding device.
  • FIGS. 1 and 2 Explanation is now made of one embodiment of a copying paper feeding device according to this invention by referring to FIGS. 1 and 2 conjointly.
  • a reference numeral 1 is a rotation drum having a photosensitive surface as used in a con- .ventional electronic copying apparatus.
  • the drum is carried within the housing by a horizontal shaft 2 supported by supporting members (not shown) and is rotatable at a predetermined speed in a direction shown by an arrow in FIG. 1.
  • a paper applying mechanism 3 for applying a copying paper to the rotation drum and a separating mechanism 4 for separating the copying paper from the rotation drum are respectively provided.
  • a copying paper feeding device includes the paper applying mechanism and the separating mechanism.
  • the paper applying mechanism has a case 7 for receiving a plurality of copying papers 8 stacked one over the other, and a feed roller 5 adapted to contact with a paper at the top of the stacked papers to permit it to be applied to the rotation drum 1.
  • the feed roller 5 is rotatably mounted at the end of an arm 5a whose base end is pivoted, and is rotated through a drive mechanism (not shown).
  • a pair of guide rollers 6 are provided to cause the paper 8 to be applied from the feed roller 5 to be supplied forwardly to permit it to be guided between the rotation drum and a known image transferring mechanism 9.
  • paper feeding roller 5 and guide rollers 6 is such that a copying paper is fed to the rotation drum 1 with its side edge portion 8a projecting from one side edge la of the rotation drum 1.
  • a mechanism the same as a conventional paper feeding mechanism may be positioned in a manner to be deviated relative to one side edge of the rotation drum.
  • the paper separation mechanism 4 is adapted to separate from the drum 1 a copying paper having an image transferred at an image transferring mechanism and then supply it towards a delivery outlet (not shown) of a copying apparatus.
  • the paper separation mechanism 4 has a belt conveyor consisting of a pair of rollers 10 disposed at a predetermined interval and endless belts 1 1 trained between the rollers 10. The image bearing copying paper is fed towards the delivery outlet by rotating the rollers 10 and thus driving the endless belt 1 1 in a direction shown by an arrow.
  • On the rotation drum side of the belt conveyor is provided a separating means 12 for separating the image bearing copying paper from the drum 1 and guiding it onto the belt conveyor.
  • the separating means has a separating roller 14 rotatably provided above the roller 10 in a manner to be displaced from one side edge la of the rotation drum, and a guide plate 13 provided above the roller 10 in a manner to be substantially parallel to the top surface of the belt with a slight space left between the guide plate and the belt.
  • the guide plate 13 has a recessed portion 13a at its side surface as shown in detail in FIG. 2 and the separating roller 14 is positioned within the recessed portion.
  • the roller 14 and guide plate 13 are supported by a shaft 14a.
  • the roller 14 is rotatable and the guide plate 13 is swingable about the shaft 14a.
  • the guide plate 13 is positioned in a manner to be displaced a little from one side edge 1a of the rotation drum.
  • the roller 14 is adapted to contact with that portion of the copying paper projecting from the side edge 1a of the rotation drum 1 to cause the copying paper to be separated from the drum 1.
  • the rotation drum of the copying apparatus has a predetermined surface portion electrostatically and photoelectrically treated during rotation by well known means.
  • a copying paper 8 is travelled by the paper applying mechanism 3 in a direction indicated by an arrow and, when the predetermined surface portion so treated of the rotation drum comes to a suitable position, applied onto the surface portion of the drum.
  • the copying paper 8 attached to the drum 1 is rotated therewith to the transferring mechanism 9 so that the image on the photosensitive surface may be transmitted to the copying paper 8.
  • the copying paper 8 brought into contact with the predetermined surface of the rotation drum is rotated together with the rotation drum with its portion projecting from the side edge la of the rotation drum and is subjected to an image transfer.
  • the image bearing copying paper 8 is separated from the surface of the rotation drum through its side edge portion 8a slidably engaged with the separation roller 14 and directed from below the guide plate 13 towards the endless belt 11 as the drum is rotated. Then, the image bearing copying paper is travelled on the belt conveyor and sent to a fixing mechanism (not shown) where it is fixed. Thereafter, the image bearing copying paper is sent to the outside through the delivery outlet (not shown).
  • the copying paper feeding device With the copying paper feeding device according to this invention, separation of a copying paper from the rotation drum can be assured by causing that side edge portion of the copying paper projecting from one side edge of the rotation drum to be brought into a sliding contact with the separation roller.
  • the construction of the paper feeding device per se is substantially the same as a conventional paper feeding mechanism.
  • a separation roller, a guide plate etc. which are simple in design are used.
  • the paper separating mechanism is very simple in construction as compared with the conventional one using the vacuum suction means.
  • FIG. 3 shows a modification of a paper separating mechanism.
  • a guide plate is provided in a manner that its one end extends parallel to one side wall of the rotation drum.
  • the base end of the guide plate 20 is pivoted near the photosensitive surface of the drum by pivoting means.
  • the guide plate 20 has a flat under surface and, at its intermediate portion thereof, a projection 20a inclined downwardly. Below the projection 20a one end of a belt 11 of a belt conveyor is positioned.
  • the front surface of the projection 20a is inclined at an obtuse angle to the flat undersurface of the guide plate to provide a copying paper guiding surface with the inclined surface of the projection and the flat under surface.
  • a guide roller 21 is rotatably mounted on the side surface of the guide plate 20 in a manner that part of the guide roller projects in an intersection drawn between the inclined surface of the projection and the flat under surface.
  • a rubber roller 22 is provided below the guide roller 21 so as to be contacted with, and rotated together with, the guide roller.
  • a copying paper feeding device for electronic copying apparatus provided with a rotation drum having a photosensitive surface
  • said copying paper feeding device including means for applying a copying paper onto the photosensitive surface of the rotation drum with at least one side edge of the copying paper extending beyond one side edge of the rotation drum, means for separating the copying paper from the rotation drum including a separation roller provided in proximity to said drum to be contacted with said one surface of said one edge and a guide plate member having a lower surface along which the copying paper is guided from the separation roller, said guide plate being swingable about the rotation axis of said separation roller and mounted adjacent said drum for slidingly contacting with one surface of said one side edge extending beyond said one side edge of said drum of the copying paper which faces the photosensitive surface, and transporting means to which the copying paper from said separating means is supplied.
  • a copying paper feeding device for electronic copying apparatus provided with a rotation drum having a photosensitive surface
  • said copying paper feeding device including means for applying a copying paper onto the photosensitive surface of the rotation drum with at least one side edge of the copying paper extending beyond one side edge of the rotation drum, and means for separating the copying paper from the rotationdrum including a swingable guide plate member whose one end extends toward the inside of said drum to guide the copying paper along the lower surface of the guide plate and whose base end is pivoted, said guide plate having a flat under surface and a projection extending at an obtuse angle to the flat under surface, and being mounted adjacent said drum for slidingly contacting with one surface of said one side edge extending beyond said one side edge of said drum of the copying paper which faces the photosensitive surface.
  • a copying paper feeding device in which said separating means further includes a pinch roller whose portion extends in an intersection drawn between the inclined surface of the projection and the lower surface of the guide plate, said pinch roller being frictionally engaged with the copying paper to permit it to be guided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
US401714A 1972-10-04 1973-09-28 Copying paper feeding device for electronic copying apparatus Expired - Lifetime US3923298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972115099U JPS4972254U (enrdf_load_stackoverflow) 1972-10-04 1972-10-04

Publications (1)

Publication Number Publication Date
US3923298A true US3923298A (en) 1975-12-02

Family

ID=14654176

Family Applications (1)

Application Number Title Priority Date Filing Date
US401714A Expired - Lifetime US3923298A (en) 1972-10-04 1973-09-28 Copying paper feeding device for electronic copying apparatus

Country Status (4)

Country Link
US (1) US3923298A (enrdf_load_stackoverflow)
JP (1) JPS4972254U (enrdf_load_stackoverflow)
DE (1) DE2349694A1 (enrdf_load_stackoverflow)
GB (1) GB1408338A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000942A (en) * 1974-12-27 1977-01-04 Canon Kabushiki Kaisha Transfer medium separating device
US4013285A (en) * 1975-03-06 1977-03-22 Copyer Co., Ltd. Copying machine
US4014538A (en) * 1974-10-28 1977-03-29 Konishiroku Photo Industry Co., Ltd. Sheet separating device in electrostatic recording apparatus
US4050691A (en) * 1973-05-28 1977-09-27 Canon Kabushiki Kaisha Separator device in a copying machine
US20050030362A1 (en) * 2003-08-05 2005-02-10 Triplett Edward Lynn Media detack from an intermediate printing member
US20100239350A1 (en) * 2009-03-23 2010-09-23 Xerox Corporation Apparatuses useful for printing and corresponding methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126994B (en) * 1982-09-21 1986-08-13 Xerox Corp Transporting sheets

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1044450A (en) * 1906-10-22 1912-11-12 American Multigraph Co Delivery mechanism.
US3096977A (en) * 1959-12-05 1963-07-09 Berkley Machine Co Apparatus for squamiform lapping of blanks
US3770345A (en) * 1969-03-21 1973-11-06 Canon Kk Electrophotographic copying apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1044450A (en) * 1906-10-22 1912-11-12 American Multigraph Co Delivery mechanism.
US3096977A (en) * 1959-12-05 1963-07-09 Berkley Machine Co Apparatus for squamiform lapping of blanks
US3770345A (en) * 1969-03-21 1973-11-06 Canon Kk Electrophotographic copying apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050691A (en) * 1973-05-28 1977-09-27 Canon Kabushiki Kaisha Separator device in a copying machine
US4014538A (en) * 1974-10-28 1977-03-29 Konishiroku Photo Industry Co., Ltd. Sheet separating device in electrostatic recording apparatus
US4000942A (en) * 1974-12-27 1977-01-04 Canon Kabushiki Kaisha Transfer medium separating device
US4013285A (en) * 1975-03-06 1977-03-22 Copyer Co., Ltd. Copying machine
US20050030362A1 (en) * 2003-08-05 2005-02-10 Triplett Edward Lynn Media detack from an intermediate printing member
US7086713B2 (en) 2003-08-05 2006-08-08 Lexmark International, Inc. Media detack from an intermediate printing member
US20100239350A1 (en) * 2009-03-23 2010-09-23 Xerox Corporation Apparatuses useful for printing and corresponding methods
US8761646B2 (en) * 2009-03-23 2014-06-24 Xerox Corporation Apparatuses useful for printing and corresponding methods

Also Published As

Publication number Publication date
JPS4972254U (enrdf_load_stackoverflow) 1974-06-22
DE2349694A1 (de) 1974-04-18
GB1408338A (en) 1975-10-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CANON INC., 30-2 SHIMOMARUKO 3-CHOME OHTA-KU, TOKY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:COPYER CO. LTD.;REEL/FRAME:004625/0651