US3645527A - Sheet-feeding devices - Google Patents

Sheet-feeding devices Download PDF

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Publication number
US3645527A
US3645527A US39977A US3645527DA US3645527A US 3645527 A US3645527 A US 3645527A US 39977 A US39977 A US 39977A US 3645527D A US3645527D A US 3645527DA US 3645527 A US3645527 A US 3645527A
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United States
Prior art keywords
sheet
feed
rollers
stack
sheet feeder
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Expired - Lifetime
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US39977A
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English (en)
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Albert George Ronald Gates
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NRG Manufacturing Ltd
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NRG Manufacturing Ltd
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    • 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
    • B65H3/0623—Rollers or like rotary separators acting at least during a part of each separation cycle on the articles in a direction opposite to the final separating direction
    • 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
    • B65H3/0615—Rollers or like rotary separators reciprocating and rotatable in one direction only

Definitions

  • the pivot of I the lever may also be adjustable forwards and backwards to [56] Cited adapt the feeder for different sheet sizes and thicknesses of UNITED STATES PATENTS P P"- 2,759,4l5 8/ 1956 Harris et al. ..27 1 I42 X H Clalms,6 Drawing Figures Patented Feb. 29, 1972 3,645,527
  • the present invention relates to an improvement in sheetfeeding devices, and more particularly to an improved feed unit for use with a sheet feeder in which the top sheet of a stack of sheets is to be fed horizontally.
  • a sheet feeder comprising a feedboard which supports a stack of sheets to be fed and which advances the stack upwardly so that the top sheet of the stack arrives at a feeding level at which it is engageable by a sheet-feeding member. It has been discovered that in such a mechanism it is necessary either to provide a complicated compensating mechanism on the feedboard raising device which ensures that, after each individual sheet is fed, the remainder of the stack is indexed upwardly to bring the next successive sheet to the feeding level, or alternatively to pro vide a complicated compensating mechanism on the sheet feed member in order to ensure that a constant feeding force is exerted on whichever sheet happens to be at the top of the stack so that only the top sheet is fed.
  • the compensating mechanism must be capable of ensuring that the frictional force is sufficient to entrain the top sheet and yet the downward force exerted on the stack by the feed member should not be so great as to result in frictional binding of the top sheet with successive sheets therebelow and thus cause multiple feeding. Hitherto such compensating mechanisms have been provided, but their incorporation has necessitated considerable complication and thus increase in cost of construction and maintenance of the sheet feeder.
  • a sheet feeder including a feed table for supporting a stack of sheets to be fed, two feed rollers for frictional engagement with the top sheet of a stack on said table, a one-way clutch mechanism associated with each roller to prevent rotation of the roller during movement of the roller in a feeding direction and to permit the roller to roll back along the stack of sheets during movement in a return direction, a reciprocable feed member carrying a freely pivotable lever to which said rollers are connected by means of the one-way clutch devices, a gimballing structure for connecting the two feed rollers to said feeding member and permitting independent up and down movement of the feed rollers with respect to one another and means for adjusting the height of the pivot axis of the said freely pivotable lever.
  • the sheet feeder may include a front stop to hold the leading edge of the top sheets of said stack during the early part of the movement of the rollers in a feed direction to cause the sheets to undergo bowing to release the top most sheet from the contacting sheet, and means for adjusting the horizontal positioning of the said pivot axis whereby the range of movement of the rollers can be moved towards and away from said front stop.
  • the rollers may be adjusted to a position closer to the front stop when feeding sheets having a low resistance to bowing so that the extent of the region of bowing may be reduced, making the bowing more acute and thus separating the top sheets more effective- Iy.
  • the rollers are each provided with a rubber tire to increase the friction between the roller and a sheet being fed.
  • the means for adjusting the vertical positioning of the pivot axis may comprise a vertically extending slot arrangement fonned on the reciprocable feed member, and a pivot shaft of the lever engageable in the slot for vertical movement therealong between indents at spaced positions along the slot.
  • spring biased abutment means may be provided for urging the pivot shah into the indents.
  • the abutment means may comprise a pair of plates spring biased in a direction parallel to the direction of return movement of the reed rollers, each plate having a vertically extending slot.
  • the gimballing structure may conveniently comprise a common spindle the ends of which carry the rollers, and a spindle support pivotally connecting the midpoint of the spindle to the freely pivotable lever.
  • the sheet feeder may include a feedboardraising mechanism for automatically adjusting the level of the top of the stack once a noticeable departure from the desired level has been sensed.
  • the departure from the desired level may be sensed by a set of stack height stop fingers pivotable between a first position in which they contact the top sheet of a stack to be fed, and a second position in which the top sheet is free to advance, means being provided for sensing the precise orientation of the fingers when in said first position whereby lowering of the stack height will vary said first position and will trip the feedboard-raising mechanism for raising movement.
  • FIG. 1 is a side elevational, partly sectional view of one embodiment of sheet-feeding device according to this invention, the device being shown in the process of entraining the top sheet of a stack;
  • FIG. 2 is a view, corresponding to FIG. I, and showing the sheet in a subsequent position in the feeding cycle;
  • FIG. 3 is a further view similar to FIGS. I and 2 and showing the device returning to its starting position prior to feeding the subsequent sheet;
  • FIG. 4 is an end elevational view of the feed unit of FIGS. 1 to 3;
  • FIG. 5 is a side elevational view showing the feed unit of FIG. 4 but with one feeding roller removed for purposes of clarity;
  • FIG. 6 is a further side elevational view depicting the geometry of the feed unit and illustrating the self-compensating nature of the feed unit.
  • FIG. 1 shows a sheet feeder in which a stack of paper sheets is supported on a feed board 14 between a front paper fence II and a backstop 12, a paperweight 13 being slidably mounted on the backstop to bear downwardly against the upper sheets of the stack adjacent their rear edges.
  • a paper height stop 8 at the top of the sheet fence comprises a plurality of finger-shaped cams fixedly mounted on a rotatable spindle I0 which is carried by bearings in side frames of the sheet feeder.
  • the top sheet of the stack is caused to move forwards, i.e., to the right as viewed in FIGS. I to 3, by means of a feed unit 5 carrying a pair of rubber-tired rollers provided with a one-way clutching arrangement arranged so mat the feed unit may roll freely along the stack of paper in a leftward direction but upon rightward movement of the feed unit, the rollers I frictionally entrain the top sheet for feeding movement towards the right.
  • the feed unit 5 is carried by a feed unit support bar 7 driven for purely horizontal reciprocating movement from left to right as shown by the arrows in FIGS. 1 and 3.
  • FIG. I shows that the top sheet of the stack has been entrained during rightward motion of the feed unit and is caused to bow near its right-hand edge which is caught in a recess 9b behind the finger 9a of the cam 9.
  • the feed unit has arrived at its rightward limit of motion and the one-way clutch devices of the rollers 1 permit the rollers to freewheel in the anticlockwise direction during withdrawal of the top sheet, by frictional engagement with the secondary feed rollers and 16.
  • rubber pads [30 of the paper weight 13 bear downwardly on the rear edge of the next successive sheet to reduce the powbility of more than one sheet being fed at a time.
  • the top few sheets it is possible for the top few sheets to become dragged through a small distance towards the right, and particularly so when the sheet feeder is being used for high-speed operation.
  • the finger cams 9 are provided with raised cam surface portions 90 which, during anticlockwise rotation of the cams between the FIG. 2 position and the FIG. 3 position, push the top sheets back into their starting position. This action is clearly visible from a study of FIG. 3 in which the finger cams 9 are partially returned to their starting position and the raised cam surface portions 9c can be seen to urge the top few sheets leftwardly into contact with the back stop 12.
  • the weight is constructed and balanced so that it can rock backwards and forwards on the support part comprising the back stop 12.
  • feed unit 5 is carefully constructed to provide a simple yet effective self-compensating arrangement which adjusts the normal reaction exerted by the roller 1 on the top of the stack so that the frictional force with which the rollers urge the top sheet rightwardly is of sufficient magnitude to drive the top sheet rightwardly.
  • the normal reaction is prevented from being so great as to cause the top sheet and the second sheet to undergo mutual frictional engagement which might otherwise result in double feeding.
  • FIGS. 4 and 5 show the arrangement by means of which the two rollers l are mounted on stub spindles 2c of a swivel block 2 by means of a pin I9 secured to the free end of a swinging arm 3.
  • the opposite end of the swinging arm is secured to a shaft 4 which in turn is freely rotatable with respect to its mount, formed by the casing of the horizontally reciprocable feed unit 5, and thus permits pivoting of the swinging arm 3.
  • the two rollers 1 will be independently movable vertically by virtue of the two pivoting joints formed by the pin 19 and the shaft 4.
  • any irregularities in the thickness across the stack of sheets can be taken up by the independent movement of the rollers I.
  • the degrees of freedom of the pivotable block are indicated by the arrows 20 and 21 in FIGS. 4 and 5 respectively.
  • the stub spindles 2c are each provided with a shoulder 20 which, together with a circlip 2b, define axial constraints on the rollers l which are nevertheless freely rotatable in one direction of rotation only, since reverse rotation is prevented by the one-way clutch devices associated therewith.
  • Each roller 1 has an axially extending spacer collar la integrally formed therewith and thus by arranging the rollers l with the spacer portions la facing axially outwardly, i.e., adjacent the associated circlip 2b, the spacing between the roller tires can be reduced.
  • each roller has a built-in one-way clutch it will also be necessary to transpose the rollers from one side of the swivel block to the other when reversing the spacer locations if the one-way clutch device is not to be upset.
  • the sides of the frame of the feed unit 5 are provided with similarly shaped U slots 22 which are of a width sufficient to accommodate a central narrow diameter portion 23 of the shaft 4.
  • Each of the slots 22 is provided with leftwardly extending portions or indents 24 and 25 positioned at the tops of the left-hand and right-hand limbs of the U respectively.
  • a further leftwardly extending portion or indent 26 is provided at the base of the left hand limb of the U.
  • the small diameter portion 24 of the shaft 4 is thus able to be located in any one of the three indents 24, 25 and 26. and is held in position in the associated indent by means of spring-loaded plates 6 having a vertical slot 27 of a length equal to the height of the two limbs of the U-shaped slots 22.
  • the plates 6 are positioned one on each side of the feed unit (as shown in FIG. 5) and are spring loaded towards the left by means of tension springs 30 mounted between studs 31 fixed to the feed unit frame and suitable mountings 32 on the right-hand ends of the plates 6.
  • tension springs 30 mounted between studs 31 fixed to the feed unit frame and suitable mountings 32 on the right-hand ends of the plates 6. The purpose ofthe U slot 22 and the indents 24, 25 and 26 will be described later.
  • the length of the swinging arm 3 is designated y and the center of gravity of the assembly comprising swinging arm 3, pin I9, swivel block 2, stub spindles 2c and rollers l is positioned a distance 1 away from the axis of the shaft 4, the weight of the assembly being designated W, and the swinging arm 3 being inclined at a normally constant angle a to the horizontal.
  • the frictional contact between the rubber covered rollers l and the top sheet of the stack is such that a frictional force F in the leftward direction is exerted on the rollers as a result of a normal reaction R acting on the rollers in the upward direction by virtue of the contact between the rollers and the paper stack.
  • the angle a can be selected at either of two fixed valves. More than two such values may be provided for if necessary.
  • One reasonforthetwoupperindentsflandzsisthatthe rightmost or forward indent 25 can be used when feeding short sheets such as cards, where the distance between the rightmost position of the rollers I and the secondary feed rollers is to be at a minimum.
  • the leftmost indents 24 and 26 since this will allow the maximum length of sheet between the rollers 1 and the sheet fence 1] and will thus permit the desired bowing of the right hsnd part of the sheet.
  • the roller nearer to the Paper Height Stop causes the buckling to be distributed over a shorter span, and therefore become more acute. This in turn affords greater resilience to the buckled part of the sheet and assists sheet release.
  • the slots 22 may be constructed to have both upper and lower forward indents, or even a choice of three or more vertical and/r horizontal adjustment settings.
  • the vertical spacing x between the axis of shaft 4 and the top sheet of paper will be maintained constant since the feedboard raising mechanism will always maintain the stack of sheets at the appropriate height governed by contact of the finger cams 9 of the paper height stop contacting the top sheet of the stack.
  • the feedboard-raising mechanism senses that the top of the stack has dropped, the raising mechanism will index the feedboard upwardly to bring the top sheets once again into the correct position.
  • the illustrated feed unit incorporates a particularly simple yet reliable self-compensating mechanism and also includes a manual compensating device to allow for different grades of sheet smoothness.
  • the sheet-feeding operation described above is only possi ble provided is in excess of u, so that the top sheet is gripped by the rollers but permitted to slide with respect to the next successive sheet during application of a given value of R.
  • This relationship between s, and p, is assured by using rubber tired rollers 1, preferably provided with a roughened high-grip periphery.
  • the essential sheet-feeding components of the feeder include the novel feed unit 5, a paper height stop 8 and littable feed board 14.
  • the secondary feed rollers may be eliminated and the device be used to feed directto some part ofa printing machine or other device to which sheets are to be fed.
  • the particular paper height stop mechanism 8 described is not essential but may be replaced by any other mechanically equivalent device which restrains the leading edge of the top sheets yet permits the very top sheet to be advanced from the stack at the appropriate part of the feed cycle.
  • the stack-raising mechanism driving the feedboard is not illustrated in the drawings but in this embodiment is in the form of a reciprocating pawl which engages a ratchet wheel.
  • the pawl reciprocates but remains clear of the ratchet wheel.
  • 111e pawl only engages the ratchet wheel when the stack height falls and causes an angular displacement of the extreme anticlockwise position of the paper height stop spindle 10, in which case the pawl will engage the ratchet wheel causing the feedboard to rise to its correct position.
  • a device will not advance after each individual sheet is fed unless the sheets are of considerable thickness.
  • This feed stack raising mechanism is particularly simple and is thus convenient for use with the low-cost, self-compensating, reliable sheet feed unit illustrated.
  • any other suitable feedboard-raising mechanism may be employed.
  • the swinging arm 3 carrying the one-way clutched rollers provides a feed unit which executes a simple reciprocating movement in a horizontal plane and thus the operating noise is considerably reduced with respect to the operating noise normally experienced when using a sheet feeder employing vertical and horizontal movements of the sheet feed members;
  • the more compact arrangement afforded by the simple construction enables a more aesthetically pleasing design to be obtained and the resulting feed unit is unobtrusive both from the point of view of design appearance and of mechanical accessibility.
  • the limits of up-and-down movement of the gimballing mechanism are defined by the upper and lower end 33 and 34 of a slot 35 formed in each plate 6 and engageable with the stub spindles 2c, as shown in FIG. 5.
  • a sheet feeder comprising:
  • a feed table for supporting a stack of sheets to be fed
  • reciprocably driven feed means movable along said stack in a purely horizontal feed direction and an opposite purely horizontal return direction;
  • t. gimballing means connecting said lever with said two feed rollers for allowing independent up and down movement of the feed rollers relative to one another;
  • one-way clutch means connecting said rollers to said gimballirtg means for preventing rotation of said rollers during movement of the feed means in said feed direction but allowing roller rotation during movement of said feed means in said return direction;
  • h. means for adjusting the height of the said pivot axis of the lever.
  • a sheet feeder as set forth in claim 1. including means for adjusting the horizontal positioning of said pivot axis with to said feed means.
  • said resilient biasing means includes plate means, resiliently biased for urging said pivot means towards said indents, first vertically extending further slot means formed in said plate means means, second further slot rtieans for for receiving said gimballing means, and means on further slot means for defining upper and lower limits of up and down movement of said rollers.
  • said gimballing means comprises spindle means for supporting both said rollers, and spindle support means pivotally connected to said lever.
  • a feeder including: o
  • a fecd table for supporting a stack of sheets to be fed and having a pair of opposed edges
  • sheet feed means for engaging thetop sheet of such a stack and urging the said top sheet along a given direction parallel'to said table over one of said opposed edges;
  • releasable street stop means positioned above said one edge for obstructing movement of said top sheet along said given direction during movement of said drive m sheet stop release means for releaing said sheet stop means after a predetermined part of said drive means movementzand V l f.
  • adjustable connecting means operably' associated with saiddrive mean and saidsheet feed means for-varying simultaneously the horizontal positioning of the'limits of said path with respect to said releasable sheet stop means.
US39977A 1969-06-12 1970-05-25 Sheet-feeding devices Expired - Lifetime US3645527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29957/69A GB1271526A (en) 1969-06-12 1969-06-12 Improvements in or relating to sheet feeding devices

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US3645527A true US3645527A (en) 1972-02-29

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US39977A Expired - Lifetime US3645527A (en) 1969-06-12 1970-05-25 Sheet-feeding devices

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US (1) US3645527A (de)
JP (1) JPS4932834B1 (de)
AR (1) AR211218A1 (de)
AT (2) AT302806B (de)
DE (2) DE2026848C3 (de)
DK (1) DK126173B (de)
FR (1) FR2049177B1 (de)
GB (1) GB1271526A (de)
YU (1) YU34584B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253653A (en) * 1978-04-07 1981-03-03 Agfa-Gevaert, A.G. Apparatus for singularizing stacked sheets of radiation-sensitive material or the like
US4541625A (en) * 1980-02-12 1985-09-17 Canon Kabushiki Kaisha Sheet film supply apparatus
US4932646A (en) * 1987-11-27 1990-06-12 The Mead Corporation Sheet feeders for soft coated sheet material
US5142129A (en) * 1989-04-28 1992-08-25 Ncr Corporation Passbook transport mechanism
US6467766B2 (en) * 1998-11-20 2002-10-22 Fujitsu Limited Paper sheet feed mechanism
US20030132568A1 (en) * 2001-12-20 2003-07-17 Guillermo Garcia Value sheet handling apparatus
US6682064B2 (en) * 2001-02-15 2004-01-27 Ferag Ag Method and apparatus for dismantling a stack of flat objects piece by piece
US20040032075A1 (en) * 2001-02-15 2004-02-19 Ferag Ag Apparatus and method for destacking a stack of flat articles
US20040245701A1 (en) * 2003-05-12 2004-12-09 Rhoads Christopher E. Pick mechanism and algorithm for an image forming apparatus
US20050046105A1 (en) * 2003-08-26 2005-03-03 Agfa Corporation Slip sheet capture mechanism and method of operation
CN103052579A (zh) * 2010-08-06 2013-04-17 佳能株式会社 片材进给装置、成像装置和图像扫描装置
CN109335161A (zh) * 2018-11-25 2019-02-15 贵州恒霸药业有限责任公司 一种药盒打码进盒装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53158457U (de) * 1977-05-18 1978-12-12
DE4006166A1 (de) * 1990-02-23 1991-08-29 Siemens Ag Verfahren zum vereinzeln von blaettern eines blattstapels und vorrichtung zur durchfuehrung des verfahrens
DE4131726A1 (de) * 1991-09-24 1993-03-25 Bdt Buero Datentech Gmbh Verfahren und vorrichtung zum vereinzeln von blattfoermigen aufzeichnungstraegern
DE4307505A1 (de) * 1993-03-10 1994-09-15 Heidelberger Druckmasch Ag Vorrichtung zum Ausrichten des oberen Papierbogens eines Anlegestapels auf dem Anlegestapel
CH690854A5 (fr) * 1996-02-28 2001-02-15 Olivetti Lexikon Spa Procédé et dispositif d'introduction de feuilles.
GB2349872B (en) * 1999-05-11 2004-01-14 Mars Inc Flexible media dispenser
JP2002362771A (ja) * 2001-06-11 2002-12-18 Toshiba Tec Corp 記録紙分離装置
EP1533259A1 (de) * 2003-11-19 2005-05-25 Siempelkamp Handling Systeme GmbH & Co. Entstapelvorrichtung mit Friktionsrollenvorrichtung
JP5555020B2 (ja) * 2010-03-17 2014-07-23 キヤノン株式会社 シート斜行補正装置及び画像形成装置
CN109051898A (zh) * 2018-08-29 2018-12-21 宁波得力科贝技术有限公司 打印机进纸机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US768979A (en) * 1903-12-29 1904-08-30 Talbot C Dexter Paper-feeding machine.
US2062643A (en) * 1935-07-01 1936-12-01 Edward Buschman Feeding means for duplicating machines
US2126514A (en) * 1936-12-12 1938-08-09 Standard Mailing Machines Comp Sheet separating and feeding device
US2197036A (en) * 1937-09-25 1940-04-16 Ford Frank Ronald Duplicating machine
US2759415A (en) * 1952-11-07 1956-08-21 David A Harris Sheet feed means for liquid process duplicating machine
US3379433A (en) * 1965-02-16 1968-04-23 Gestetner Ltd Sheet feeding mechanism

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328105A (de) * 1953-09-25 1958-02-28 Ritzerfeld Wilhelm Rotationsvervielfältiger mit Vorrichtung zur automatischen Blattzuführung von einem Papierstapel
DE1026765B (de) * 1954-01-14 1958-03-27 Wilhelm Ritzerfeld Rotationsvervielfaeltiger mit einer selbsttaetigen Bogenzufuehrvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US768979A (en) * 1903-12-29 1904-08-30 Talbot C Dexter Paper-feeding machine.
US2062643A (en) * 1935-07-01 1936-12-01 Edward Buschman Feeding means for duplicating machines
US2126514A (en) * 1936-12-12 1938-08-09 Standard Mailing Machines Comp Sheet separating and feeding device
US2197036A (en) * 1937-09-25 1940-04-16 Ford Frank Ronald Duplicating machine
US2759415A (en) * 1952-11-07 1956-08-21 David A Harris Sheet feed means for liquid process duplicating machine
US3379433A (en) * 1965-02-16 1968-04-23 Gestetner Ltd Sheet feeding mechanism

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253653A (en) * 1978-04-07 1981-03-03 Agfa-Gevaert, A.G. Apparatus for singularizing stacked sheets of radiation-sensitive material or the like
US4541625A (en) * 1980-02-12 1985-09-17 Canon Kabushiki Kaisha Sheet film supply apparatus
US4932646A (en) * 1987-11-27 1990-06-12 The Mead Corporation Sheet feeders for soft coated sheet material
US5142129A (en) * 1989-04-28 1992-08-25 Ncr Corporation Passbook transport mechanism
US6467766B2 (en) * 1998-11-20 2002-10-22 Fujitsu Limited Paper sheet feed mechanism
US6886826B2 (en) * 2001-02-15 2005-05-03 Ferag Ag Apparatus and method for destacking a stack of flat articles
US6682064B2 (en) * 2001-02-15 2004-01-27 Ferag Ag Method and apparatus for dismantling a stack of flat objects piece by piece
US20040032075A1 (en) * 2001-02-15 2004-02-19 Ferag Ag Apparatus and method for destacking a stack of flat articles
US7100913B2 (en) * 2001-12-20 2006-09-05 Mars Incorporated Value sheet handling apparatus
US20030132568A1 (en) * 2001-12-20 2003-07-17 Guillermo Garcia Value sheet handling apparatus
US20040245701A1 (en) * 2003-05-12 2004-12-09 Rhoads Christopher E. Pick mechanism and algorithm for an image forming apparatus
US7377508B2 (en) * 2003-05-12 2008-05-27 Lexmark International, Inc. Pick mechanism and algorithm for an image forming apparatus
US20050046105A1 (en) * 2003-08-26 2005-03-03 Agfa Corporation Slip sheet capture mechanism and method of operation
US6929257B2 (en) * 2003-08-26 2005-08-16 Agfa Corporation Slip sheet capture mechanism and method of operation
CN103052579A (zh) * 2010-08-06 2013-04-17 佳能株式会社 片材进给装置、成像装置和图像扫描装置
US8891143B2 (en) 2010-08-06 2014-11-18 Canon Kabushiki Kaisha Sheet feeding device, image forming apparatus, and image scanning apparatus
CN103052579B (zh) * 2010-08-06 2015-05-20 佳能株式会社 片材进给装置、成像装置和图像扫描装置
CN109335161A (zh) * 2018-11-25 2019-02-15 贵州恒霸药业有限责任公司 一种药盒打码进盒装置

Also Published As

Publication number Publication date
YU34584B (en) 1979-10-31
DK126173B (da) 1973-06-18
JPS4932834B1 (de) 1974-09-03
DE2026848B2 (de) 1974-12-05
GB1271526A (en) 1972-04-19
AR211218A1 (es) 1977-11-15
FR2049177A1 (de) 1971-03-26
DE2065252A1 (de) 1973-01-25
YU150270A (en) 1979-04-30
AT312411B (de) 1973-12-27
DE2065252B2 (de) 1980-05-14
DE2026848A1 (de) 1970-12-17
FR2049177B1 (de) 1973-04-06
DE2065252C3 (de) 1981-02-05
DE2026848C3 (de) 1975-07-17
AT302806B (de) 1972-10-25

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