US3866903A - Sheet feeding apparatus - Google Patents

Sheet feeding apparatus Download PDF

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Publication number
US3866903A
US3866903A US301601A US30160172A US3866903A US 3866903 A US3866903 A US 3866903A US 301601 A US301601 A US 301601A US 30160172 A US30160172 A US 30160172A US 3866903 A US3866903 A US 3866903A
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US
United States
Prior art keywords
sheet
roller
stack
topmost
topmost sheet
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
US301601A
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English (en)
Inventor
Rudolf Eppe
Karl Hartwig
Juergen Vossnacke
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.)
Agfa Gevaert AG
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Agfa Gevaert AG
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Filing date
Publication date
Priority claimed from DE19712154223 external-priority patent/DE2154223C3/de
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
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Publication of US3866903A publication Critical patent/US3866903A/en
Anticipated expiration legal-status Critical
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    • 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
    • G03G15/6502—Supplying of sheet copy material; Cassettes therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/58—Baseboards, masking frames, or other holders for the sensitive material
    • G03B27/585—Handling cut photosensitive sheets
    • G03B27/586—Supply stacks; Peeling off

Definitions

  • the sleeve is rotated intermittently by a drive in a direction to move the leading portion of the topmost sheet over a front stop and two corner [30] Foregn Apphcat'on Prmr'ty Data separators into the range of the advancing rolls. Once Oct. 30, 1971 Germany 2154223 the topmost sheet is engaged by the advancing rolls, it
  • the roller is attached to a disk Primary Examiner-Evon C. Blunk Assistant Examiner-Bruce H. Stoner, Jr. Attorney, Agent, or Firm-Michael S. Striker which is secured to and rotates with a-metallic core surrounded by the sleeve.
  • the present invention relates to apparatus for feeding successive topmost sheets of a stack of sheets lengthwise into and along a predetermined path, for example, into an electrostatic copying machine. More particularly, the invention relates to improvements in that device of a sheet feeding apparatus which engages and displaces successive topmost sheets of a stack of sheets so as to move theleading portions of successive topmost sheets into the range of advancing rollers or analogous transporting means which take over and continue the transport of sheets along the predetermined path.
  • the invention relates to improvements in intermittently driven rotary sheet feeding devices which are used in sheet feeding apparatus to engage successive topmost sheets of a stack of sheets and to move the leading portions of successive topmost sheets. beyond the customary corner separators and/or front stops and into the range of preferably constantly driven sheet advancing or transporting means.
  • the topmost sheet of a stack of sheets on a platform or an analogous carrier is engaged and displaced by a feeding device in the form of a feed roll which is provided with a peripheral layer consisting of elastomeric material and having a high coefficient of friction.
  • the drive means for the feed roll includes an overrunning clutch which rotates the feed roll during the first stage of a sheet feeding cycle. Once the leading portion of the topmost sheet which is being displaced by the feed roll reaches the advancing rolls, the sheet begins to rotate the feed roll because the speed of the sheet increases as soon as it is moved into the range of the advancing rolls.
  • Another object of the invention is to provide the apparatus with a novel and improved sheet engaging and feeding device and with novel means for automatically disengaging the elastic element of the feeding device from the topmost sheet of the stack in a predetermined angular position of the feeding device.
  • a further object of the invention is to provide a sheet feeding apparatus which insures that the sheet or sheets below the topmost sheet of a stack cannot be deformed and/or otherwise damaged during removal of the topmost sheet.
  • An additional object of the invention is to provide a sheet feeding apparatus which is particularly suited for use as a means for delivering successive sheets of a stack of sheets into an electrostatic copying machine wherein the sheets receive powder images.
  • Still another object of the invention is to provide a sheet feeding apparatus which can be used for transport of relatively thick, relatively thin, long, short, readily flexible or relatively stiff sheets without any damage to the sheets located below the sheet which is in the process of being moved off the stack.
  • the invention is embodied in a sheet feeding apparatus which is particularly suited for transporting successive topmost sheets of a stack of sheets into the range is deformed to an extent'which suffices to bring about machine which is to receive successive sheets from a stack.
  • An object of the invention is to provide a novel and improved sheet feeding apparatus wherein the deformable elastic element of the rotary device which bears against the topmost sheet of a stack of sheets is automatically disengaged from the topmost sheet before the of sheet advancing rolls in an electrostatic copying machine whereby the leading portions of successive sheets must bypass corner separators and/or a front stop located between the stack and the advancing rolls.
  • the sheet feeding apparatus comprises a carrier (e.g., a platform) for a stack of sheets including a topmost sheet, a rotary feeding device including an elastically deformable preferably sleeve-like element having a pcripheral surface which normally bears against the topmost sheet of the stack on the carrier with a predetermined force, and means for intermittently rotating the feeding device about the axis of the deformable element'so that the latter moves the topmost sheet lengthwise.
  • a carrier e.g., a platform
  • a rotary feeding device including an elastically deformable preferably sleeve-like element having a pcripheral surface which normally bears against the topmost sheet of the stack on the carrier with a predetermined force, and means for intermittently rotating the feeding device about the axis of the deformable element'so that the latter moves the topmost sheet lengthwise.
  • the feeding device further includes a member which is arranged to disengage'the peripheral surface of the deformable element from the topmost sheet of the stack on the carrier in a predetermined angular position of the feeding device, namely, before the topmost sheet has been advanced to a position in which the deformed element could simultaneously engage the trailing edge of the topmost sheet and an intermediate portion of the next-following sheet.
  • the deformable element preferably consists of a material having a high coefficient of friction
  • the dis engaging member may constitute or may include a relatively small roller whose axis is parallel to the axis of the deformable element and which engages the topmost sheet in the predetermined angular position of the feeding device.
  • the line connecting the axis of the deformable element with the axis of the disengaging roller and the line including the axis of the deformable element and being normal to the plane of the topmost sheet of the stack on the carrier make (in the predetermined angular position of the feeding device) an angle alpha which satisfies the equation wherein M is the moment of frictional resistance of v the roller, M A is the moment of frictional resistance of the deformable element, P is the force with which the.
  • deformable element normally bears upon the topmost sheet of the stack on the carrier, r is the radius of the roller, and r is the distance between the axes of the deformable elementand the roller.
  • the feeding device may further include a second roller which also engages the topmost sheet of the stack on the carrier in the predetermined angular position of the feeding device to further insure that the deformable element is out of contact with the topmost sheet before the trailing portion of the topmost sheet advances beyond the region of contact with the deformable element.
  • FIG. 1 is a fragmentary side elevational view of a portion of a conventional sheet feeding apparatus
  • FIG. 2 is a fragmentary side elevational view of a sheet feeding apparatus which embodies one form of DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • FIG. 1 illustrates a portion of a conventional sheet feeding apparatus whereinan elastic feed roll 3 is in the process of moving the topmost sheet 2 of a stack 1 in the direction indicated by arrow C.
  • the roll 3. bears against the stack 1 with a force P which can be generated by biasing the feed roll 3 downwardly toward the stack 1 or by urging the stack upwardly against the feed roll.
  • the carrier or platform 50 which supports the stack 1 can be biased upwardly under the action of one or more weights suspended on cables, passing over suitable pulleys, or the platform 50 for the stack 1 can be urged upwardly by one or more springs.
  • FIG. 1 illustrates that stage of forward transport of the topmost sheet 2 when the feed roll 3' (which is driven intermittently to rotate in the direction indicated by arrow Alengages the trailing portion 2a of the topmost sheet 2 as well as the adjacent intermediate portion of the next-following second sheet 2A.
  • the deformability of the feed roll 3 is amply sufficient to insure that the feed roll simultaneously engages the sheets 2 and 2A. Due to its engagement with the sheet 2A, the feed roll 3 causes this sheet to move forwardly and to have its leading portion deformed by conventional corner separators such as those shown at 17, 18 in FIG. 5.
  • the leading portions of successive sheets are caused to enter the nip of two advancing rolls (such as the rolls 14, 15 of FIG. 5) which thereupon transport the sheets through an electrostatic copying or other machine wherein or in combination with which the sheet feeding apparatus is being put to use.
  • FIGS. 2 and 3 illustrate a portion of a sheet feeding apparatus which is constructed and assembled in accordance with a first embodiment of the invention.
  • the rotary sheet feeding device comprises ashaft 6 which supports a cylindrical metallic core 19 surrounded by a sleeve-like elastic element 3 (hereinafter called sleeve) having axially parallel peripheral ribs to enhance its sheet feeding action.
  • a segment-shaped porsleeve 3 so that the latter exhibits a flat 30 located in a plane which is parallel to the axis of the shaft 6.
  • the core 19 or the shaft 6 carries a disk 20 provided with an eccentric pin or shaft 4 for a disengaging member here shown as a-small roller 5 which is held against axial movement away from'the disk 20 by a split ring 21.
  • the roller 5 may consist of steel and is preferably provided with a highly polished cylindrical peripheral surface.
  • the material of the sleeve 3 has a high coefficient of friction. 1
  • the sleeve 3 is assumed to feed the topmost sheet 2 of the stack 1 on the platform or carrier 50 in the direction indicated by arrow C.
  • the leading edge portion K of the flat 3a engages the upper side of the topmost sheet 2 simultaneously with the peripheral surface of the disengaging roller 5.
  • the leading portion of the topmost sheet 2 is assumed to have moved into and beyond the nip of the advancing rolls 14, 15 shown in FIG. 5 so that the sleeve 3 is rotated by the advancing rolls by way of the sheet 2.
  • the arrow A indicates the direction of rotation of the sleeve 3. If the sleeve 3 were to rotate beyond the angular position shown in FIG.
  • the edge portion K would be lifted off the upper side of the topmost sheet 2. This can take place (i.e., the sheet feeding device can assume a predetermined angular position in which the sleeve 3 is lifted off the sheet 2 by the roller 5) if the moment of rotation furnished by the roller 5 suffices, namely, if the various forces acting upon the sleeve 3 and roller 5 are related to each other in the following way:
  • angle a is enclosed by a line which connects the axes of the sleeve 3 and disengaging roller 5 and a line which includes the axis of the sleeve 3 and is normal to the plane of the topmost sheet 2 of the stack of sheets on the carrier or platform 50.
  • the wear upon the edge portion K can be completely eliminated if the sheet feeding device of the apparatus.
  • FIG. 4 wherein the disk carries two cylindrical rollers 5 and 7.
  • the shaft for the roller 7 is shown at 8.
  • the roller 5 is rotatable on or with its shaft 4 with a minimum of friction.
  • the roller 7 offers a much higher resistance to rotation about its axis (with or relative to the shaft 8). It is even possible to fixedly mount the shaft 8 in the disk 20 and to fixedly secure the roller 7 to the shaft 8.
  • the line connecting the axes of the shafts 4, 6 makes with the line connecting the axes of the shafts 6, 8 an angle 2 a. This angle is halved by the direction in which the force P acts when the peripheral surfaces of the rollers 5 and 7 engage the upper side of one and the same sheet of the stack 1 (e.g., the illustrated topmost sheet 2).
  • the roller 7 should offer a relatively high resistance to rotation about its axis because, otherwise, the sleeve 3 would turn only to the angular position shown in FIG. 5 in which the edge portion K of the flat 3a continues to abut against the topmost sheet 2 and slides therealong as the latter is being pulled by the advancing rolls l4 and 15. Furthermore, the sleeve 3 would have to complete a relatively large angular movement in the direction of arrow A prior to starting with the feed of the second sheet 2A in order to move the edge portion K into engagement with the upper side of the sheet 2A and to transport the latter into the range of the advancing rolls l4, 15.
  • roller 7 which offers greater resistance to rotation about the axis of the shaft 8 is located ahead of the roller 5 (which offers lesser resistance to rotation about the axis of its shaft 4) as considered in the direction (arrow A) of rotation of the deformable sleeve 3 in order to move the sheets 2, 2A, etc. into the range of the advancing rolls 14 and 15. Due to its high resistance to rotation about the axis of the shaft 8, the roller 7 causes the sleeve 3 to turn about the axis of the shaft 6 until the topmost sheet 2 is simultaneously engaged by the peripheral surfaces of the rollers 7 and 5.
  • the line including the axis of the sleeve 3 and halving the shortest distance between the axes of the rollers S and 7 is then normal to the plane of the sheet 2, i.e., such line coincides with the normal direction of pressure of the sleeve 3 upon the sheet 2.
  • the feeding device of FIGS. 4 and 5 is automatically held against further rotation in the direction of arrow A as soon as the peripheral surface of the roller 5 comes into contact with the topmost sheet 2, i.e., when the feeding device assumes the predetermined angular position of FIG. 5.
  • the angle alpha By properly selecting the angle alpha, one can greatly reduce 1 the pressure with which the roller 7 bears against the sheet 2 and hence the frictional resistance which the roller 7 offers to lengthwise transport of the sheet 2 under the action of the advancing rolls 14 and 15. Since the feeding device reaches the predetermined angular position of FIG.
  • FIG. 5 further shows the manner in which the sleeve 3 is driven to transport successive sheets 2, 2A, etc., of
  • the core 19 carries a gear 13 which meshes with a gear segment 12a provided on a lever 12 fulcrumed at 12b.
  • the lever 12 is articulately connected with a rod 11 which is reciprocated by a crank or cam, not shown, to thereby pivot the lever 12 back and forth.
  • the gear 13 can rotate the sleeve 3 in the direction of arrow A through the intermediary of an overruning clutch 13a.
  • the gear 13 rotates the sleeve 3 in a counterclockwise direction by way of the clutch 13a whereby the peripheral surface of the sleeve 3 feeds the topmost sheet 2 in the direction of the arrow C and into the range of the advancing rolls 14, 15.
  • the topmost sheet 2 causes its front corner portions to flex and to thus bypass the corner separators 17, 18.
  • Such bypassing of the corner separators 17, 18 is facilitated by the provision of a front stop 16 against which the front edges of the sheets forming the stack 1 abut.
  • the center of the foremost partof such sheet bulges upwardly immediately behind the front stop 16 and the corner portions move above and beyond the corner separators 17, 18.
  • the sheet 2 begins to rotate the sleeve 3 atan elevated speed so that the sleeve continues to rotate in the direction of arrow A.
  • the lever 12 continues to pivot in a clockwise direction under the action of the rod 11.
  • the angular movement of the sleeve 3 in the direction of arrow A is terminated when the topmost sheet 2 is engaged by the disengaging roller
  • the axial length of the sleeve 3 is normally substantially less than the width of a sheet.
  • the shaft 6 can carry two or more coaxial elastic sleeves 3. If the shaft 6 carries a single sleeve 3, the latter is located centrally of the stack 1, i.e., midway between the longitudinally extending marginal portions of the sheet 2. If
  • the shaft 6 carries several sleeves 3, they are preferably distributed uniformly across the width of the topmost sheet 2.
  • An important advantage of the improved sheet feed ing apparatus is that it preventsethe sleeve or sleeves 3 from flexing or bulging the second sheet 2A while the topmost sheet 2 is being transported into the range of the advancing rolls l4, 15. In other words, the apparatus insures that the sheet 2A is not caused to bulge immediately behind the front stop 16 of FIG. in response to forward transport of the topmost sheet 2 and at that stage of forward transport of the sheet 2 when the sleeve 3 would normally engage the sheet 2A be hind the trailing edge of the sheet 2 (see the sleeve 3' of FIG. 1).
  • Feeding of sheets without any deformation of the second sheet during forward transport of the topmost sheet is of particular importance in'electrostatic copying machines as well as in all such machines or apparatus wherein the sheets of a stack should be fed individually to one or more treating stations.
  • the interval between the transport of a preceding sheet (2) and the transport of the next sheet (2A) can be relatively long so that, if the sheet 2A has been deformed in response to forward transport of the topmost sheet 2, the deformation of the second sheet is likely to be permanent due to the length of the interval which elapses before the sheet 2A is actually cairsedlq advance bgyond the front stgglfi and corner separators 17, 18.
  • the improved sheet feeding apparatus can be used with particularadv'antage in or with relatively small copying or like machine which are'not provided with sophisticated and hence expensive means for insuring accurate registry of successive sheets with various instrumentalities at one or more treating stations.
  • a relatively large and complex printing, copying or like machine is invariably provided with adjustable corner separators, adjustable sheet feeding rolls, adjustable grippers and/or other means which receive successive sheets by simultaneous formation of compensating bulges in a manner well known from the art.
  • the advancing means forsuccessive sheets is as simple as shown in FIG. 5, it is often desirable to feed successive sheets 2, 2A, etc.
  • the distance r plus r need not exceed the radius of the round portion of the sleeve 3 so that the feeding 'device need not hobble in the course of the next-following rotation under the action of the lever ,11 in order to advance the second sheet 2A into the range of the rolls 14, 15.
  • a sleeve 3 which does not have a flat 3a and which is associated with a disengaging roller 5 or with rollers 5, 7 in such a way that a portion of each roller extends beyond its preferably roughened peripheral surface.
  • Such apparatus can employ a simpler sleeve but the operation of the feeding device involves some hobbling of the truly cylindrical sleeve due to the fact that the roller or rollers 5, 7 extend'beyond its peripheral surface.
  • a combination comprising a carrier for a stack of sheets including a topmost sheet; a rotary feeding device including a topmost sheet; a rotary feeding device including an elastically deformable element having a peripheral surface normally bearing against the topmost sheet of the stack on said carrier, the material of said element having a high coefficient of friction; and means for rotating said device about the axis of said element so that said element moves the topmost sheet lengthwise, said feeding device further including a disengaging member arranged to disengage said peripheral surface of said element from the topmost sheet in a predetermined angular position of said feeding device, said disengaging member including a roller having a portion extending beyond the peripheral surface of said element and an axis which is parallel to the axis of said element, said roller engaging the topmost sheet of the stack on said
  • peripheral surface of said element has a flat located in the region of sid disengaging member and facing the topmost sheet of the stack on said carrier in said predetermined angular position of said feeding device.
  • roller extends at least in part radially beyond said flat of said peripheral surface.
  • a combination comprising a carrier for a stack of sheets including a topmost sheet; a rotary feeding device including an elastically deformable element having a peripheral surface normally bearing against the topmost sheet of the stack on said carrier, the material of said element having a high coefficient of friction; and means for rotating said device about the axis of said element so that said element moves the topmost sheet lengthwise, said feeding device further including a disengaging member arranged to disengage said peripheral surface of said element from the topmost sheet in a predetermined angular position of said feeding device, said disengaging member including a first roller having a portion extending beyond the peripheral surface of said element and an axis which is parallel to the axis of said element, said first roller engaging the topmost sheet of the stack on said carrier in said predetermined angular position of said feeding
  • a combination comprising a carrier for a stack of sheets including a topmost sheet; a rotary feeding device including an elastically deformable element having a peripheral surface normally bearing against the topmost sheet of the stack on said carrier, the material of said element having a high coefficient of friction; and means for rotating said device about the axis of said element so that said element moves the topmost sheet lengthwise, said feeding device further including a diseggaging member arranged to disengage said peripheral surface of said element from the topmost sheet in a predetermined angular position of said feeding device, said disagaging member including a first roller having a portion extending beyond the pe ripheral surface of said element and an axis which is parallel to the axis of said element, said first roller enaging the topmost sheet of the stack on said carrier in said
US301601A 1971-10-30 1972-10-27 Sheet feeding apparatus Expired - Lifetime US3866903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712154223 DE2154223C3 (de) 1971-10-30 Vereinzelungsvorrichtung, insbesondere für elektrostatische Kopiergeräte

Publications (1)

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US3866903A true US3866903A (en) 1975-02-18

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US301601A Expired - Lifetime US3866903A (en) 1971-10-30 1972-10-27 Sheet feeding apparatus

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US (1) US3866903A (ja)
JP (1) JPS5231740B2 (ja)
BE (1) BE790506A (ja)
FR (1) FR2158860A5 (ja)
GB (1) GB1412000A (ja)
HK (1) HK44676A (ja)
IT (1) IT966805B (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183516A (en) * 1977-05-18 1980-01-15 Phillips Petroleum Company Blank feeding apparatus
US4325494A (en) * 1977-04-12 1982-04-20 Avco Investment Management Corporation Single-bill currency dispenser
US4438915A (en) * 1979-06-01 1984-03-27 Nippon Electric Co., Ltd. Sheet feeding device
US5149077A (en) * 1991-06-24 1992-09-22 Xerox Corporation Hybrid nudger roll
EP0595524A2 (en) * 1992-10-26 1994-05-04 Hewlett-Packard Company An apparatus and method for picking paper from a stack
US5342037A (en) * 1993-12-17 1994-08-30 Xerox Corporation Feed roll wear compensation scheme
US5346199A (en) * 1993-11-01 1994-09-13 Xerox Corporation Adjustable nudger roll normal force using multiple springs
US5348282A (en) * 1993-10-04 1994-09-20 Xerox Corporation Self adjusting feed roll
US5741008A (en) * 1990-03-12 1998-04-21 Canon Kabushiki Kaisha Automatic paper feed apparatus
US20100013144A1 (en) * 2008-07-16 2010-01-21 Toshihiko Seike Paper feed apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126305A (en) * 1977-04-18 1978-11-21 International Business Machines Corporation Combing wheel
US4175741A (en) * 1977-12-19 1979-11-27 International Business Machines Corporation Cut-sheet xerographic copier having combing wheel sheet feed and a duplex bin with an adjustable bottom-of-the-bin pad
JPS60149958U (ja) * 1983-11-10 1985-10-04 ユニオン化学株式会社 水成栽培器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133024A (en) * 1911-07-29 1915-03-23 M D Knowlton Co Sheet-coating machine.
US2764409A (en) * 1953-06-18 1956-09-25 Bombard Leon E La Method and apparatus for friction feeding of sheets
US2996862A (en) * 1959-08-26 1961-08-22 Certain Teed Prod Corp Shingle bundle wrapping equipment
US3294019A (en) * 1964-04-13 1966-12-27 Addressograph Multigraph Rotary printing machine
US3532423A (en) * 1965-05-21 1970-10-06 Addressograph Multigraph Photoelectrostatic copying machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1133024A (en) * 1911-07-29 1915-03-23 M D Knowlton Co Sheet-coating machine.
US2764409A (en) * 1953-06-18 1956-09-25 Bombard Leon E La Method and apparatus for friction feeding of sheets
US2996862A (en) * 1959-08-26 1961-08-22 Certain Teed Prod Corp Shingle bundle wrapping equipment
US3294019A (en) * 1964-04-13 1966-12-27 Addressograph Multigraph Rotary printing machine
US3532423A (en) * 1965-05-21 1970-10-06 Addressograph Multigraph Photoelectrostatic copying machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325494A (en) * 1977-04-12 1982-04-20 Avco Investment Management Corporation Single-bill currency dispenser
US4183516A (en) * 1977-05-18 1980-01-15 Phillips Petroleum Company Blank feeding apparatus
US4438915A (en) * 1979-06-01 1984-03-27 Nippon Electric Co., Ltd. Sheet feeding device
US5741008A (en) * 1990-03-12 1998-04-21 Canon Kabushiki Kaisha Automatic paper feed apparatus
US5149077A (en) * 1991-06-24 1992-09-22 Xerox Corporation Hybrid nudger roll
EP0595524A2 (en) * 1992-10-26 1994-05-04 Hewlett-Packard Company An apparatus and method for picking paper from a stack
EP0595524A3 (ja) * 1992-10-26 1994-08-31 Hewlett Packard Co
US5348282A (en) * 1993-10-04 1994-09-20 Xerox Corporation Self adjusting feed roll
US5346199A (en) * 1993-11-01 1994-09-13 Xerox Corporation Adjustable nudger roll normal force using multiple springs
US5342037A (en) * 1993-12-17 1994-08-30 Xerox Corporation Feed roll wear compensation scheme
US20100013144A1 (en) * 2008-07-16 2010-01-21 Toshihiko Seike Paper feed apparatus

Also Published As

Publication number Publication date
DE2154223B2 (de) 1977-02-03
IT966805B (it) 1974-02-20
JPS5231740B2 (ja) 1977-08-17
BE790506A (nl) 1973-04-25
JPS4852244A (ja) 1973-07-23
FR2158860A5 (ja) 1973-06-15
HK44676A (en) 1976-07-23
DE2154223A1 (de) 1973-06-20
GB1412000A (en) 1975-10-29

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