US3924848A - Paper feed apparatus for gripper-type paper transport device - Google Patents

Paper feed apparatus for gripper-type paper transport device Download PDF

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Publication number
US3924848A
US3924848A US437186A US43718674A US3924848A US 3924848 A US3924848 A US 3924848A US 437186 A US437186 A US 437186A US 43718674 A US43718674 A US 43718674A US 3924848 A US3924848 A US 3924848A
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US
United States
Prior art keywords
paper
gripper
sheet
sheets
standby position
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
US437186A
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English (en)
Inventor
Shin-Ichi Murakami
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Application granted granted Critical
Publication of US3924848A publication Critical patent/US3924848A/en
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
    • G03G15/6555—Handling of sheet copy material taking place in a specific part of the copy material feeding path
    • G03G15/6558—Feeding path after the copy sheet preparation and up to the transfer point, e.g. registering; Deskewing; Correct timing of sheet feeding to the transfer point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/085—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers by combinations of endless conveyors and grippers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00405—Registration device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00362—Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00367—The feeding path segment where particular handling of the copy medium occurs, segments being adjacent and non-overlapping. Each segment is identified by the most downstream point in the segment, so that for instance the segment labelled "Fixing device" is referring to the path between the "Transfer device" and the "Fixing device"
    • G03G2215/00409—Transfer device

Definitions

  • ABSTRACT A paper feed device for a gripper-type paper transport device where sheets of paper are individually fed from a stack. Each sheet is detected by a first detector to stop the sheet in an unbuckled condition at a standby position.
  • a second detector is actuated to restart the feeding of the paper sheet into the open gripper where the paper is fed at a speed faster than that of the gripper.
  • means are provided for closing the gripper so that the paper can be transported thereby.
  • the present invention relates to a paper feed device for use with a printing machine or a copying machine, and more particularly, to a paper feed device in which a chain gripper is used for transferring a sheet of paper.
  • FIG. 1 is a schematic view of a paper feed device according to the present invention, in which the paper feed device is used in an electrophotographic copying machine.
  • FIG. 2 is a side view showing an outline of a paper feed device according to a preferred illustrative embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an illustrative circuitry associated with the paper feed device of this invention.
  • FIG. 1 A preferred embodiment is illustrated in FIG. 1 where a paper feed device of the present invention is used .in an electrophoto graphic copying machine. Sheets of paper are fed one by one from a pair of paper feed trays la and 1b by means of feed rollers 2 and transferred leftwardly in FIG. 2 by a pair of feed rollers 3a and 3b as shown in FIG. 2. The leading edge of each sheet of paper depresses a contact 4a of a micro-switch 4 attached at a predetermined position to a baffle 10, the contact 4a extending through an opening in baffle 10. When the leading edge reaches a point B, the micro-switch is turned on and an electromagnetic clutch 12 (see FIG.
  • a normal rotating chain gripper 6 mounted on a paper transfer'chain 5 comes to assume a position .above the sheet of paper, the chain gripper 6 having a pawl 6b rotatably attached on a pivot shaft 6a joumaled in the gripper and adapted to be opened.
  • Levers 6c are also provided at both ends of shaft 6a. The levers 6c are urged downwardly by a cam 7 to open pawl 6b.
  • the chain gripper 6 pushes a contact 8a of a micro-switch 8 disposed adjacent to the end of baffle 10, the contact 8a extending through an opening in baffle 10.
  • the aforementioned electromagnetic clutch again becomes operative to connect the feed rollers 3a and 3b with the aforementioned driving source thereby rotating the pair of feed rollers 3a and 3b and thus the sheet of paper is again transferred leftwardly in FIG. 2.
  • the circumferential speed of feed rollers 3a and 3b is percent greater than the linear velocity of the chain gripper 6, such that the leading edge of the sheet of paper catches up with the pawl 6b and eventually is inserted into the clamp portion thereof.
  • the sheet of paper, while in the clamp portion, is further advanced until the leading edge thereof contacts a wall provided in the chain gripper 6 so that registration of the sheet of paper is effected.
  • micro-switch 8 is operated by chain gripper 6, and a cycle-switch may be separately provided for serving as a timer in like manner with the above embodiment.
  • an electromagnetic brake may be attached to feed rollers 3a and 3b as to act in a reverse manner to the ON-OFF operation of the driving electromagnetic clutch. Further, to prevent floating of the sheet of paper when it contacts contact 4a of micro-switch 4, a keep plate 11 may be provided. Thus, probability of retention of paper sheets at baffle 10 is lessened. s
  • the paper feed device although the paper feeding mechanism is simple, can positively feed a sheet of paper to a paper standby position where it awaits to be gripped by a travelling gripper means. It is further positively fed from the standby position to the gripper means so that it can be firmly held thereby.
  • FIG. 3 there is shown illustrative circuitry for use with the paper feeding device of this invention.
  • switches 4 and 8 set as shown in FIG. 3, a sheet of paper is fed from one of the trays 1a or 1b and when the paper standby position is reached, switch 4 is opened to de-energize clutch 12 and stop rollers 3a and 3b.
  • the paper sheet waits until the gripper 6 opens, which causes switch 8 to close and thus re-energize clutch 12 which feeds the paper sheet into the open gripper.
  • the switch 8 opens and the gripper removes the paper sheet from the standby position, the gripper being connected to the paper transfer chain 5, which is driven by a separate power source not shown.
  • switch 4 returns to the closed position to complete the feeding of the standby position.
  • the above-described cycle is ready to be repeated.
  • a paper feed device for feeding sheets of paper from at least one receptacle therefor, said device comprising:
  • paper feeding means for feeding sheets of paper from said receptacle at a first rate of speed
  • first detecting means responsive to the presence of each of said sheets of paper for rendering said paper feeding means inoperative and stopping each said sheet of paper in a substantially flat condition at a predetermined paper standby position
  • chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to said paper standby position, and the linear speed of said gripper being less than that speed at which said paper sheets are fed;
  • a paper feed device as in claim 1 where said first detecting means includes first switching means having a contact disposed in the travel path of said paper sheets,
  • said paper sheets depressing said contact to operate said first switching means, said paper feeding means being responsive to the operation of said first switching means for stopping said paper sheet at said paper standby position.
  • a paper feed device as in claim 2 including a drive means for said paper feed means, said first switching means disconnecting said drive means from said paper feed means when said first switching means is operated.
  • a paper feed device comprising: at least one paper tray for receiving therein sheets of P p paper feed means including feed rollers for supplying sheets of paper one by one from said one tray; means for detecting the arrival of a leading edge of said sheets of paper and for stopping each said sheet of paper in a substantially fiat condition when the leading end of each said sheet of paper reaches a predetermined paper standby position; chain delivery means having a gripper for clamping each sheet of paper, the locus of said chain delivery means being adjacent to the travel path of the sheet of paper at a predetermined distance from said paper standby position;

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Discharge By Other Means (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US437186A 1973-06-26 1974-01-28 Paper feed apparatus for gripper-type paper transport device Expired - Lifetime US3924848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7125373A JPS5340453B2 (enrdf_load_stackoverflow) 1973-06-26 1973-06-26

Publications (1)

Publication Number Publication Date
US3924848A true US3924848A (en) 1975-12-09

Family

ID=13455346

Family Applications (1)

Application Number Title Priority Date Filing Date
US437186A Expired - Lifetime US3924848A (en) 1973-06-26 1974-01-28 Paper feed apparatus for gripper-type paper transport device

Country Status (4)

Country Link
US (1) US3924848A (enrdf_load_stackoverflow)
JP (1) JPS5340453B2 (enrdf_load_stackoverflow)
DE (1) DE2420007A1 (enrdf_load_stackoverflow)
GB (1) GB1449327A (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082595A (en) * 1976-04-29 1978-04-04 Slater John W Pressure sensitive label applicator
US4155545A (en) * 1976-12-14 1979-05-22 Ricoh Co., Ltd. Sheet feed apparatus for electrostatic copying machine or the like
EP0269942A2 (en) 1984-07-23 1988-06-08 Eaton Corporation Semi-automatic mechanical transmission control
US4900008A (en) * 1986-12-22 1990-02-13 Polaroid Corporation Sheet clamping arrangement for rotatable drums
US4938619A (en) * 1988-05-13 1990-07-03 U.S. Philips Corporation Arrangement for position indication of an edge of sheet-shaped data carrier
US4943174A (en) * 1988-05-13 1990-07-24 U.S. Philips Corporation Arrangement for position indication of an edge of a sheet-shaped data carrier
EP0480398A3 (en) * 1990-10-09 1992-10-14 Canon Kabushiki Kaisha Image forming apparatus having recording material carrying means
EP0688977A2 (en) 1994-06-25 1995-12-27 Eaton Corporation Engagement fault degraded mode control for transmissions
EP0695890A2 (en) 1994-08-06 1996-02-07 Eaton Corporation Adaptive pull-away ratio selection
EP0697508A2 (en) 1994-08-19 1996-02-21 Eaton Corporation Throttle control system in combination with an automated mechanical transmission system
US6131496A (en) * 1996-10-21 2000-10-17 Koenig & Bauer-Albert Aktiengesellschaft Sheet processing machine with a chain conveyor
US20120326379A1 (en) * 2011-06-23 2012-12-27 Canon Kabushiki Kaisha Sheet stacking apparatus and image forming apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD122359A1 (enrdf_load_stackoverflow) * 1975-09-05 1976-10-05

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071370A (en) * 1960-08-01 1963-01-01 Xerox Corp Sheet feeding apparatus
US3137495A (en) * 1960-12-23 1964-06-16 Xerox Corp Sheet feed mechanism
US3469834A (en) * 1967-04-21 1969-09-30 Xerox Corp Sheet feeder and separator apparatus
US3514098A (en) * 1966-07-28 1970-05-26 Eichner Organisation Gmbh Elec Card transporting apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071370A (en) * 1960-08-01 1963-01-01 Xerox Corp Sheet feeding apparatus
US3137495A (en) * 1960-12-23 1964-06-16 Xerox Corp Sheet feed mechanism
US3514098A (en) * 1966-07-28 1970-05-26 Eichner Organisation Gmbh Elec Card transporting apparatus
US3469834A (en) * 1967-04-21 1969-09-30 Xerox Corp Sheet feeder and separator apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082595A (en) * 1976-04-29 1978-04-04 Slater John W Pressure sensitive label applicator
US4155545A (en) * 1976-12-14 1979-05-22 Ricoh Co., Ltd. Sheet feed apparatus for electrostatic copying machine or the like
EP0269942A2 (en) 1984-07-23 1988-06-08 Eaton Corporation Semi-automatic mechanical transmission control
US4900008A (en) * 1986-12-22 1990-02-13 Polaroid Corporation Sheet clamping arrangement for rotatable drums
US4938619A (en) * 1988-05-13 1990-07-03 U.S. Philips Corporation Arrangement for position indication of an edge of sheet-shaped data carrier
US4943174A (en) * 1988-05-13 1990-07-24 U.S. Philips Corporation Arrangement for position indication of an edge of a sheet-shaped data carrier
EP0480398A3 (en) * 1990-10-09 1992-10-14 Canon Kabushiki Kaisha Image forming apparatus having recording material carrying means
US5557383A (en) * 1990-10-09 1996-09-17 Canon Kabushiki Kaisha Image forming apparatus having recording material carrying means
EP0688977A2 (en) 1994-06-25 1995-12-27 Eaton Corporation Engagement fault degraded mode control for transmissions
EP0695890A2 (en) 1994-08-06 1996-02-07 Eaton Corporation Adaptive pull-away ratio selection
EP0697508A2 (en) 1994-08-19 1996-02-21 Eaton Corporation Throttle control system in combination with an automated mechanical transmission system
US6131496A (en) * 1996-10-21 2000-10-17 Koenig & Bauer-Albert Aktiengesellschaft Sheet processing machine with a chain conveyor
US20120326379A1 (en) * 2011-06-23 2012-12-27 Canon Kabushiki Kaisha Sheet stacking apparatus and image forming apparatus
US8550461B2 (en) * 2011-06-23 2013-10-08 Canon Kabushiki Kaisha Sheet stacking apparatus and image forming apparatus

Also Published As

Publication number Publication date
DE2420007A1 (de) 1975-01-23
JPS5021734A (enrdf_load_stackoverflow) 1975-03-07
JPS5340453B2 (enrdf_load_stackoverflow) 1978-10-27
GB1449327A (en) 1976-09-15

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