By Oblique Conveyor Patents (Class 271/251)
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Patent number: 5244202Abstract: A sheet feeding device includes a vibration member having at least one circular-arc portion, for generating a travelling wave, and a sheet guide for guiding a sheet. Since an amplitude of vibration at an inner circumferential side of the vibration member is smaller than an amplitude of vibration at an outer circumferential side, a distortion is produced in the vibration member in a direction perpendicular to the direction of movement of the sheet. The sheet guide is provided at an inner circumferential side of the vibration member, so that the sheet is fed due to the distortion while being pressed against the sheet guide. Hence, an oblique movement of the sheet due to unevenness in the thickness of the sheet can be prevented.Type: GrantFiled: December 23, 1991Date of Patent: September 14, 1993Assignee: Canon Kabushiki KaishaInventors: Yoshifumi Nishimoto, Kenichi Kataoka
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Patent number: 5224696Abstract: A paper rotation table 15 for use in transporting sheets of paper between paper handling devices while performing a rotation upon each sheet through a predetermined arc so as to present to a receiving paper handling device a leading edge different than the leading edge which emerged from a delivering paper handling device. The paper rotation table 15 has sheet support surface 10, a paper drive 20, a pivot 30, and a registration edge 40. The paper drive 20 further has a drive belt 21, a plurality of primary drive balls 25, and a plurality of secondary drive balls 26, an entry drive ball 23, and a spin drive ball 37. Paper drive 20 may be at an angle "a" to registration edge 40.Type: GrantFiled: October 4, 1991Date of Patent: July 6, 1993Assignee: EMF CorporationInventor: Wilbur J. Kellum, III
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Patent number: 5222858Abstract: The apparatus for collecting, counting and stacking material in sheets has two cascade conveyors, a loading device arranged upstream of the first conveyor, a counting station arranged downstream of the second conveyor, and a station for stacking a material in sheets or in modular pieces which have already been counted in the counting station.Type: GrantFiled: September 24, 1991Date of Patent: June 29, 1993Assignee: Dowen Company LimitedInventor: Doriano Fazion
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Patent number: 5211390Abstract: A sheet feeding device for feeding a sheet by a vibration wave includes a pair of rotatable rollers each having a rotary shaft orthogonal to the direction of conveyance of the sheet and substantially parallel to the surface of the sheet. The sheet feeding device is designed such that the sheet is nipped by and between the pair of rollers with suitable pressure, thereby eliminating lateral shift and inclination for any extraneous force applied to the sheet.Type: GrantFiled: March 5, 1991Date of Patent: May 18, 1993Assignee: Canon Kabushiki KaishaInventor: Masahiko Igaki
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Patent number: 5209810Abstract: A system for laying up multi-layer stacks of sheets is particularly well suited for making pads of notes having ultra-removable adhesive coatings applied in a narrow strip to the back of each sheet. Large sheets having areas many multiples larger than the size of the individual pads, are applied from a continuous paper web having zone coated adhesive strips applied thereto onto a series of recirculating pallets each of which serially receives a large sheet. The web is applied by pressing the adhesive coated side onto the pallet as the pallet travels through a nip formed by the web carrying roll. Closely spaced end-to-end register of the pallets is maintained through the web-applying nip roll and a perforating blade cooperates therewith to form a weakened tear line across the width of the web which is synchronized to coincide with the gap between adjacent pallets.Type: GrantFiled: August 19, 1991Date of Patent: May 11, 1993Assignee: Converex, Inc.Inventor: Carl R. Marschke
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Patent number: 5209809Abstract: A distinct conveyor assembly allows a business form sealer--such as a pressure sealer--to operate with forms that have been detached from a continuous supply. Individual forms are detached from the continuous supply while being conveyed in a first direction, to form shingled forms having irregularly positioned side edges. The forms are deshingled by conveying them from the detacher at high speed (e.g. an increase in speed of about ten times or more), and they are registered while being conveyed in the first direction at high speed. Registration may take place by moving the forms against one side edge, or moving them between funnelled side edges to ultimately engage straight guides on both side edges. After registration, the forms may be fed directly to the sealer, or into the top of a hopper, and then withdrawn from the bottom of the hopper and passed through a folder before being fed to the sealer.Type: GrantFiled: April 15, 1992Date of Patent: May 11, 1993Assignee: Moore Business Forms, Inc.Inventors: George E. Walter, John E. Traise
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Patent number: 5201515Abstract: In a collecting tray (1) having a lateral limiting member (6) and an end-side abutment (3), a driven aligning wheel (16) is arranged on a pivotally mounted, spring-biased tube (9 and 10 respectively). The abutment (3) is pivotally mounted on an arm (3a) and connected with a lever (4) which includes a pin (4a) adapted to support tube (9). When abutment (3) is pivoted to its opening position, aligning wheel (16) is lifted off sheet stack (24) so that the stack can be removed unimpededly. The aligning wheel (16) is conically shaped and pivotable from a position in which it is spring-biased towards the lateral limiting member (6) to a position directed at the front abutment (3) such that when a sheet has been laterally aligned, aligning wheel (16) is caused by the increasing friction to pivot in opposition to its spring bias to the position direction at the front abutment (3).Type: GrantFiled: February 14, 1992Date of Patent: April 13, 1993Assignee: Eastman Kodak CompanyInventor: Helmut Funk
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Patent number: 5197729Abstract: An improved document transport track drive system for a document processing machine for driving a document 10 along a track 12. The drive mechanism comprises a common drive motor 20 driving a drive shaft 30 arranged parallel to the plane of the documents in the transport track 12. Keyed to the drive shaft 30 are a number of drive pulleys 32 spaced apart and each driving, by way of a power take-off system, a document drive roller 16 mounted at right angles to the plane of the drive pulley 32. The power take-off system comprises a single drive belt 40 and a pair of idler pulleys mounted at right angles to the plane of the drive pulley 32 and arranged to turn the drive belt through 90.degree..Type: GrantFiled: November 15, 1991Date of Patent: March 30, 1993Assignee: Unisys CorporationInventor: John Couper
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Patent number: 5186115Abstract: A process and device are disclosed for automatic sewing of a piece of fabric along its edges. The process is of the type in which a rolling element (12) orientable by pivoting around a vertical axis YY' bears against the fabric in front of the presser-foot in order to guide and entrain the fabric in front of the sewing zone. The rolling element (12) is driven into rotational movement by a cylinder (16) bearing against that element in its upper zone traversed by the pivoting axis YY' in such a manner that the contact of the cylinder against the rolling element leaves this latter free to pivot, especially at high frequency, about the axis YY' independently of the value of the friction coefficient between the cylinder and the rolling element.Type: GrantFiled: July 26, 1991Date of Patent: February 16, 1993Inventors: Alain Rouleau, Patrick Rouleau, Jean-Pierre Touret
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Patent number: 5167409Abstract: The present invention provides a sheet feeding apparatus having a sheet regulating member arranged along a sheet feeding path, for regulating a lateral position of a sheet material perpendicular to the sheet feeding path by urging the lateral edge of the sheet material against the sheet regulating member, and sheet feed rollers for feeding the sheet material along the sheet feeding direction and for applying to the sheet material a rotational moment tending to urge the lateral edge of the sheet material against the sheet regulating member, whereby the sheet material is fed without occurring the skew-feed thereof.Type: GrantFiled: February 11, 1992Date of Patent: December 1, 1992Assignee: Canon Kabushiki KaishaInventor: Akira Higeta
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Patent number: 5162857Abstract: A sheet conveyer having a sheet registration device for an image forming apparatus having a sheet path for guiding a sheet having an image recorded on one side thereof back to an image forming unit for recording another image on the other side, comprises a mechanism for switching the sheet having the image recorded on one side thereof back to the sheet path, a mechanism for abutting the switched-back sheet against a lateral registration reference plane, and a preliminary shift function shared by the switch-back mechanism for shifting the sheet oppositely to the reference plane.Type: GrantFiled: January 16, 1991Date of Patent: November 10, 1992Assignees: Canon Kabushiki Kaisha, Nippon Seimitsu Kogyo Kabushiki KaishaInventors: Akira Higeta, Toru Kameyama, Takahiro Azeta, Harukazu Sekiya, Toshifumi Moritani, Kenji Baba, Kazuyuki Kubota
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Patent number: 5156392Abstract: An apparatus in which a sheet is registered during the movement thereof. The sheet is moved along a path in a forward direction of movement and a lateral force is applied thereto. The lateral force causes the sheet edge to engage a moving registration edge at which time the lateral motion is discontinued and the sheet continues along its path with virtualy no loss of velocity. As a result of the movement of the registration guide the relative velocity between the sheet and the guide is zero thereby substantially eliminating wear to the guide.Type: GrantFiled: October 10, 1991Date of Patent: October 20, 1992Assignee: Xerox CorporationInventors: Lam F. Wong, David M. Attridge
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Patent number: 5154406Abstract: Apparatus for shifting X-ray films in a magazine wherein films having different sizes form a stack and which as a straight or corner-shaped internal stop for properly oriented films. The apparatus has a frame which is reciprocable toward and away from the magazine and carries two or more pivotable links each of which supports one or more driven wheels movable into frictional engagement at least with the outermost film of the stack to shift the engaged film toward and against the stop. Properly oriented films are withdrawn from the magazine by one or more suction cups which share the movements of the links relative to the magazine. The wheels are rotated by a common prime mover.Type: GrantFiled: December 21, 1989Date of Patent: October 13, 1992Assignee: Agfa-Gevaert AktiengesellschaftInventor: Walter Bauer
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Patent number: 5139597Abstract: A distinct conveyor assembly allows a business form sealer--such as a pressure sealer--to operate with forms that have been detached from a continuous supply. Individual forms are detached from the continuous supply while being conveyed in a first direction, to form shingled forms having irregularly positioned side edges. The forms are deshingled by conveying them from the detacher at high speed (e.g. an increase in speed of about ten times or more), and they are registered while being conveyed in the first direction at high speed. Registration may take place by moving the forms against one side edge, or moving them between funnelled side edges to ultimately engage straight guides on both side edges. After registration, the forms may be fed directly to the sealer, or into the top of a hopper, and then withdrawn from the bottom of the hopper and passed through a folder before being fed to the sealer.Type: GrantFiled: October 26, 1990Date of Patent: August 18, 1992Assignee: Moore Business Forms, Inc.Inventors: George E. Walter, John E. Traise
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Patent number: 5139250Abstract: A gravity fed, "load-while-run" envelope feeder places a high capacity envelope storage bin's long dimension against a printer which creates a small footprint. The feeder transfers the envelopes from the storage bin to a horizontal transporation area with the rotation of a motor driven blade to within access of the printer's feed rollers. The blade catches an envelope's flap to feed it and rotates it by 90.degree. into the transportation area.Type: GrantFiled: December 14, 1990Date of Patent: August 18, 1992Assignee: Xerox CorporationInventor: John D. Zoltner
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Patent number: 5135215Abstract: The present invention is a device to be attached to a copy machine or the like to automatically reverse the original document. The invention is designed to account for misaligned or displaced portions of the copying machine which can result in poor quality reproductions when the original document is reversed for dual side copying. The present invention incorporates an adjustable reversion path to correct for obliquely fed originals.Type: GrantFiled: September 11, 1991Date of Patent: August 4, 1992Assignee: Mita Industrial Co., Ltd.Inventors: Kazushi Takimoto, Takashi Kotani
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Patent number: 5127644Abstract: A conveying roller conveying a paper has a stepped structure with the diameter of portion positioned at the middle in the axial direction of the conveying roller slightly larger than that on opposite sides or ends of the conveying roller. The center in the axial direction of such middle portion almost coincides with the center in the axial direction of a paper-supplying roller positioned upstream of the conveying roller. The promotion of the inclined conveyance of paper resulting from inclined supplying to the conveying roller is prevented, particularly in the case of a one-end standard paper-supplying mode wherein one side end in the direction of the width of paper is regulated by a paper-supplying guide. The middle roller portion is displaced axially toward the side of the paper-supplying guide. The forces of two springs for urging an image-read out device toward the conveying roller to be almost equal to each other.Type: GrantFiled: July 12, 1990Date of Patent: July 7, 1992Assignee: Mita Industrial Co., Ltd.Inventors: Takeo Yoshihiro, Hiroyoshi Ohmura, Kazuo Nakamura, Osamu Yoshimura, Masayuki Mizuno
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Patent number: 5123640Abstract: A device for correcting lateral alignment of a workpiece removed from a pile of workpiece prior to being fed into a processing machine. The device includes at least two pairs of rollers spaced along the direction of movement of the sheet, with each pair of rollers including a driven lower roller and a driven upper roller, with the upper roller having its axis forming a slight angle with the axis of the lower roller to provide a lateral force to move the workpiece against a lateral guide. The device can be used in the second arrangement providing front stops for aligning the front or leading edge of the workpiece after the lateral position alignment has been accomplished.Type: GrantFiled: April 23, 1991Date of Patent: June 23, 1992Assignee: Bobst SAInventor: Jean-Claude Rebeaud
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Patent number: 5114137Abstract: A device for rotating papers includes at least one conveyer belt for moving each paper through the device, at least one ball for rolling on top of each paper moving on the conveyer belt for holding the paper in position, retaining rails extending over the conveyer belt for rotatably retaining the ball, a fulcrum assembly positioned adjacent to the conveyer belt for stopping part of each paper while the belt pulls the paper radially around the fulcrum assembly, thereby rotating the paper. The fulcrum assembly preferably includes a fulcrum ball which rests against a paper support plate for wedging the paper when it makes contact with the fulcrum ball between the fulcrum ball and the support plate.Type: GrantFiled: February 11, 1991Date of Patent: May 19, 1992Inventor: Ray E. Olson
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Patent number: 5103733Abstract: An improved printing machine for moving paper sheets from a paper stack along an endless belt to an impression cylinder with continual movement of the paper sheet without stopping and starting. The instantaneous angular position of the impression cylinder is sensed and the instantaneous position of the paper along the endless belt is sensed and an error signal is generated if the relative positions are such that the paper will not arrive at the impression cylinder clamp at the proper time. The error signal causes the vacuum to be applied to a vacuum paper sheet pickup to be turned on and off at varying times to vary the time of pickup of each paper sheet that is deposited on the endless belt, thus controlling the position of each sheet on the belt. The invention allows large increases in printing speeds over the prior art because the sheets of paper are moved between the paper stack and the impression cylinder in a nonstop manner.Type: GrantFiled: October 24, 1990Date of Patent: April 14, 1992Assignee: A. B. Dick CompanyInventors: Leonid Drapatsky, Wieslaw T. Chodorowski, Thomas P. Jachimek, Richard R. Jeschke
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Patent number: 5088721Abstract: A transporting device for articles to be transported and a sorter with the same. The transporting device includes transporting rollers arranged in a transportation passage so as to contact the articles to be transported for transportation in a forward direction. The transporting rollers are supported for rotation about an axis which is swingable in a substantially horizontal plane. The axis of each transporting roller is selectively changed by a direction changing mechanism between one direction to transport the articles to be transported in the forward direction and another direction to obliquely transport the articles to be transported toward a side wall. The side wall is provided along the forward direction at an article reception position in the transportation passage.Type: GrantFiled: February 26, 1991Date of Patent: February 18, 1992Assignee: Ikegami Tsushinki Co., Ltd.Inventors: Akihiro Suzuki, Hiroshi Yamamoto, Hiroshi Tobita
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Patent number: 5074546Abstract: An apparatus for moving a document towards the bottom of a document track as the document is moved in first and second directions within the track. The apparatus includes a feed unit positioned on one side of the document track and a cooperating unit positioned on the opposed side of the track. The cooperating unit has a rod which is pivotally supported in a support. A high friction roller is secured to the top end of the rod and a low friction roller is rotatably supported on the lower end of the rod. The feed unit has an idler roller positioned opposite to the high friction roller and also has a drive roller positioned opposite to the low friction roller in the cooperating unit. As the document is moved in a first direction in the document track, the high friction roller causes the rod to pivot slightly, thereby causing the low friction roller on the bottom of the rod to cant slightly, producing a downward component of force on the document as it is moved in the first direction.Type: GrantFiled: December 20, 1990Date of Patent: December 24, 1991Assignee: NCR CorporationInventors: Peter D. Hanna, Robert W. Phillips, William B. Montague, Fredrik L. N. Kallin
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Patent number: 5065998Abstract: A simplified low cost, low wear, sheet registration and feeding system for laterally (side) registering a sheet without frictional drive slippage against the sheet and while maintaining feeding control in the primary forward feeding direction of the sheet. The sheet may be fed both forward and laterally (towards a side guide edge for side registration) utilizing only multiple sheet-engaging rotatable ellipsoidal rollers angularly mounted around the periphery of a fixed angle rotating hub member. The sheet-engaging rollers rotate with the hub member to so feed the sheet, but are also rotatable about their own, different, axes of rotation, which axes are parallel to the forward feeding direction of the sheet and the side guide to allow the sheet-engaging rollers to roll after side registration is achieved to prevent excessive lateral feeding force and undesirable slippage, smearing and/or wear.Type: GrantFiled: December 19, 1990Date of Patent: November 19, 1991Assignee: Xerox CorporationInventor: James A. Salomon
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Patent number: 5052678Abstract: An automatic printing machine for producing successive duplex prints forms an image on a first side of successive print substrates, transports successive substrates having images on a first side through the machine to form images on the opposite side of the substrate.Type: GrantFiled: September 13, 1989Date of Patent: October 1, 1991Assignee: Xerox CorporationInventor: John H. Looney
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Patent number: 5049948Abstract: A copier/printer apparatus capable of duplex copying includes a roller assembly that shifts a sheet laterally while maintaining longitudinal movement of the sheet. A shaft that supports drive rolls that form nips with mating idler rolls has pins that extend into helical slots within the drive rolls such that the assembly rolls in a normal movement (axially) in one mode, while being able to have axial and lateral movement in another mode.Type: GrantFiled: December 22, 1988Date of Patent: September 17, 1991Assignee: Xerox CorporationInventors: George B. Brown, Dennis M. Ankrom
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Patent number: 5039086Abstract: To adjust the posture of a sheet being conveyed, movable checker members provided adjacent to the conveyance path for the sheet are once driven in the direction of conveyance of the sheet before the members touch the sheet and are subsequently decelerated, the members being caused to abut against the front end of the sheet during the deceleration, thereby checking the sheet and thus correcting any skew thereof. Further, for positioning the sides of the sheet, the sheet is taken out of a hopper by way of a separating device and is guided and fed in such a manner that its front corner will not be caused to abut against a side registration guide, and subsequently the sheet is conveyed toward the guide by way of obliquely extending conveyer belt devices and one side of the sheet is brought into contact with the guide for positioning after a front corner of the sheet has passed at least the edge of the guide.Type: GrantFiled: August 17, 1989Date of Patent: August 13, 1991Assignees: Hitachi, Ltd., Hitachi Koki, Ltd.Inventors: Junichi Matsuno, Tsuyoshi Ogasawara, Masataka Kawauchi, Tsuneki Kobayashi, Yasuyuki Tsuji
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Patent number: 5031895Abstract: The invention relates to a document drive system in which the documents are transported along a track and are also urged towards the base of the track so that they are correctly oriented. The documents are driven by a drive roller 14 cooperating with a ball idler assembly resiliently mounted so that the document is gripped between a ball 33 and the drive roller 14. The axis of rotation of the drive roller is inclined with respect to the track so that a downward force is applied to the document. So long as the document can be moved towards the track, the ball 33 rotates about an axis which is parallel to the axis of rotation of the drive roller, but once the document is aligned with its lower edge in contact with the base of the track, the ball rotates about an axis perpendicular to the base of the track.Type: GrantFiled: March 16, 1990Date of Patent: July 16, 1991Assignee: Unisys CorporationInventor: John Couper
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Patent number: 5022638Abstract: A module for transporting, aligning, diverting and stacking a plurality of envelopes. The module includes: a housing frame; a registration wall secured to the housing frame; a fixed transport panel secured to the housing frame; a pivotable, envelope diverting transport panel situated upstream and adjacent the fixed transparent panel; a device for pivoting the pivotable panel between a horizontal plane and an acute angle with the horizontal plane; a stacking chamber secured to the housing frame situated beneath the fixed transport panel; and a roller assembly secured to the housing frame for transporting the envelopes in a downstream direction and for aligning the envelopes against the registration wall.Type: GrantFiled: September 10, 1990Date of Patent: June 11, 1991Assignee: Pitney Bowes Inc.Inventor: Edward M. Ifkovits, Jr.
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Patent number: 5004220Abstract: The direction of conveyance of paper sheet is changed through an angle of 90.degree. between processing and/or handling stations. Troublefree operation is ensured and an adjustment in adaptation to different paper sizes is permitted by the provision of a guide ruler 18 which is provided with pressure-applying balls 8 which cooperate with inclined driven conveyor rollers 15. The guide ruler 18 is fixed to a receiving deck 16 and comprises a continuous guiding flange 21 which depends below the level of the apices of the rollers 15. The position of the discharge end of a feeding conveyor 14 is adjustable toward and away from the guide ruler 18 .Type: GrantFiled: September 7, 1989Date of Patent: April 2, 1991Assignee: Bell & Howell GmbHInventors: Jurgen Dreschel, HoPeter, MoStephan
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Patent number: 4998133Abstract: An image forming apparatus has a copying device and automatic original document feeding device.The copying device includes a scanning position where an original document is scanned. The automatic original document feeding device automatically feeds a document to the scanning position. The feeding operation begins before the copying operation with respect to the previous document ends and the next document is fed to the scanning position with an interval distance therebetween after the copying operation with respect to the previous document.Type: GrantFiled: June 15, 1989Date of Patent: March 5, 1991Assignee: Kabushiki Kaisha ToshibaInventor: Hiroyuke Segawa
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Patent number: 4995504Abstract: As a device for straightening of letters and similar flat transported articles upon passage from a free wheeling section with a bottom conveyor belt to a cover belt section, whereby the letters are transported upright on a lengthwise edge and generally at the transition to the cover belt section are shifted in the vertical direction between the side belts of the free wheeling section by running against the bottom belt, a guide plate is provided at either side in the letter displacement zone, the plate has a step extending parallel in the direction of transport of the side belts and has a width equalling the thickness of a side belt, for the purpose of avoiding tearing of the letter flaps. The guide plates extend to the upper edge of the side belts and, by the flutter-free movement of the side belts, achieve a smooth sliding of the letters between the side belts.Type: GrantFiled: November 4, 1987Date of Patent: February 26, 1991Assignee: Licentia Patent-Verwaltungs GmbHInventor: Werner Kuhn
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Patent number: 4984779Abstract: An automatic document conveying device for copying dual-sided originals includes a first conveyance path for conveying documents from a document feeder to a platen through a U-shaped path and a second conveyance path for conveying documents from the platen to the beginning of the U-shaped path to invert the documents. A document edge alignment mechanism aligns the edge of each document conveyed through the first and second conveyance paths with a document edge alignment position on the platen.Type: GrantFiled: January 20, 1988Date of Patent: January 15, 1991Assignee: Fuji Xerox Co., Ltd.Inventor: Yasuo Iwasaki
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Patent number: 4982946Abstract: An apparatus for transporting paper comprising a paper transport path made up of a reference surface with which one edge portion of paper is brought into abutment and a paper guide on which the surface of the paper is supported, a skew roller supported on a roller shaft, which is arranged at an angle with the transport direction of the paper, and resilently urged toward the paper guide, a skew roller portions control having an abutment surface with which one end portion of the roller shaft is brought into abutment when the skew roller takes a position to be in contact with the paper and a stopper edge with which the periphery of the roller shaft is brought into abutment when the skew roller takes an open position to be away from the paper and being urged toward the skew roller, and a release to move the skew roller position control away from the skew roller, whereby it is made possible to simply bring about a state of the skew roller separated from the paper guide and a state of them held in contact.Type: GrantFiled: February 9, 1990Date of Patent: January 8, 1991Assignee: Tokyo Electric Co., Ltd.Inventors: Mitsuo Uchimura, Seiji Koike, Osamu Koizumi, Takeshi Tashiro, Kazuhiro Fushimi, Ikuzo Sugiura
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Patent number: 4983990Abstract: This invention relates to a device for printing on printed products (20) which are transported past an ink jet writer (34') in an imbricated stream by means of a conveying device. A sensor (34, 35) triggers a writing operation of the ink jet writer when a printed product (20) has reached the writing area of the latter. Therefore, the printed products (20) can also be inscribed in an imbricated stream conveyed in a freely supported manner. The conveying device, in the area of the ink jet writer (34') is provided with means (12) which laterally displace the printed products individually during transportation of the printed products (20) in the imbricated stream.Type: GrantFiled: June 5, 1989Date of Patent: January 8, 1991Assignee: Ferag AGInventor: Beat Frohlich
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Patent number: 4971309Abstract: Combination automatic feed systems and sheet readers are provided by this invention which include aligning and picking mechanisms for transporting and laterally aligning a sheet of paper relative to a flow path. The system includes a microprocessor for delivering a sheet to the alignment mechanism whereby a timing of this delivery by the automatic feeding mechanism is coordinated with the timing of the reading of the sheets in the sheet reader to compensate for both regular and irregular delays in reading the sheets, for example, during the grading of test scores. Methods for automatically feeding, reading and aligning sheets for a sheet reader are also provided.Type: GrantFiled: November 14, 1989Date of Patent: November 20, 1990Assignee: Educational Testing ServiceInventor: Keith S. Reid-Green
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Patent number: 4955965Abstract: A device capable of rotating sheets 90.degree. relative to an input orientation, utilizes a set of continuously driven rolls all turning with different surface velocities.Type: GrantFiled: December 5, 1988Date of Patent: September 11, 1990Assignee: Xerox CorporationInventor: Barry P. Mandel
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Patent number: 4953846Abstract: A sheet obliquely conveying apparatus is provided with a pair of sheet conveying rollers including a forwardly and reversely rotatable drive roller and a follower roller rotatable in contact with the drive roller, and bearing structure for rotatably supporting the shaft of the follower roller. The dimension of the bearing portion of the bearing structure which supports one end of the shaft of the follower roller is greater generally along the direction of conveyance of a sheet material than the dimension of the bearing portion of the bearing structure which supports the other end of the shaft of the follower roller. The apparatus is further provided with a resilient device generally parallel to the direction of conveyance of the sheet material for pressing the shaft of the follower roller.Type: GrantFiled: August 17, 1988Date of Patent: September 4, 1990Assignees: Canon Kabushiki Kaisha, Nippon Seimitsu Kogyo Kabushiki KaishaInventors: Takahiro Azeta, Toru Kameyama, Harukazu Sekiya, Toshifumi Moritani, Akira Higeta, Kenji Baba, Takeshi Matoba, Shinji Goto, Kazuyuki Kubota
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Patent number: 4909500Abstract: A device for conveying sheets in a given travel direction includes a conveying head having a vacuum-applying device for removing an uppermost sheet from a pile of sheets and for maintaining the sheet under suction, the conveying head and the uppermost sheet being relatively movable in the given travel direction, the uppermost sheet being held against a sheet-contacting surface of the conveying head under suction, the conveying head having at least one rolling body surrounded by suction air and frictionally engageable with the uppermost sheet for moving the sheet in the given travel direction.Type: GrantFiled: March 28, 1988Date of Patent: March 20, 1990Assignee: Heidelberger Druckmaschinen AGInventors: Bertold Grutzmacher, Peter T. Blaser
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Patent number: 4895359Abstract: A paper sheet counter is provided in which a large number of paper sheets stacked in a hopper are fed one by one between a pay-out roll and separating rolls, and stacked in a stacker. According to the invention, the separating rolls have separating roll shafts angled slightly relative to a plane perpendicular to the axis of the pay-out roll.Type: GrantFiled: February 9, 1989Date of Patent: January 23, 1990Assignee: Musashi Engineering Kabushiki KaishiInventor: Hiroyuki Ookawa
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Patent number: 4889240Abstract: A circulation-type bill deposit and dispensing apparatus, is provided with a shift mechanism which moves the bills to a predetermined position to the left or right side with respect to their feed direction so as to eliminate dispersion of bills in the lateral direction. Thus errors in discrimination of truth or falsehood or in discrimination of denominations and feed jams are prevented. An inverse shifting mechanism is also provided for moving bills to the opposite side from the initial shift (with respect to the feed direction) by a predetermined amount.Type: GrantFiled: September 14, 1988Date of Patent: December 26, 1989Assignee: International Business MachinesInventors: Koichi Sato, Tsutomu Sawa
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Patent number: 4884794Abstract: In a document handler in which simplex or duplex document sheets are fed from a document tray overlying the copier platen of a copier to one side of the platen, with a single inversion and a document side edge registration and deskewing system in the simplex path; a unidirectional, continous loop, but non-circular duplex document inversion path integral with and partially in common with the simplex path is provided at the same side of the platen. This duplex path has first and second inverting path segments separate from the simplex path, and a third path segment utilizing the simplex path.Type: GrantFiled: June 6, 1988Date of Patent: December 5, 1989Assignee: Xerox CorporationInventors: Ernest L. Dinatale, George J. Roller
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Patent number: 4836527Abstract: Side registration of a moving sheet against a registration bar or abutment line may be accomplished by a roll nip that is slightly angled toward the registration line, and is thereafter self-pivotable from that angle to one angle nearly in alignment with the direction of sheet travel. The roll nip is spring urged toward the angled position, and moves toward the alignment position in response to the reaction force of the sheet when it engages the registration bar. More specifically, side registration and deskewing of a delicate or flimsy sheet is provided by driving the sheet sideways (transversely) against a side registration edge guide in the sheet path while the sheet is primarily being driven downstream by a roller drive system comprising a mating pair of rollers on opposite sides of the sheet path to form a non-slip nip engagement of the sheet. The rollers are not skewed relative to one another.Type: GrantFiled: April 18, 1988Date of Patent: June 6, 1989Assignee: Xerox CorporationInventor: Lam F. Wong
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Patent number: 4836119Abstract: Method and apparatus for controlling the position of a sheet member (e.g., fabric) slidingly supported on a work surface, utilizing a drive train consisting of one or more drive wheels frictionally engaging a spherical ball captively supported within a housing. The drive wheels are preferrably located in spaced, mutually orthogonal relation proximate the great circle of the spherical ball. The spherical ball rests on and frictionally engages the fabric-to-be-positioned. Rotation of one of the drive wheels causes the spherical ball to rotate which, in turn, moves the fabric in a direction dependent on the location and orientation of said one drive wheel. The inventor can be implemented as an active feedback system utilizing the above-described apparatus together with position detectors and a controller.Type: GrantFiled: March 21, 1988Date of Patent: June 6, 1989Assignee: The Charles Stark Draper Laboratory, Inc.Inventors: Frank J. Siraco, David S. Barrett
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Patent number: 4821049Abstract: A substrate transport apparatus includes a registration member and an apparatus for compliantly urging a substrate against the registration member such that the effects of thickness variations of and between each substrate transported past the registration member are mitigated.Type: GrantFiled: December 2, 1987Date of Patent: April 11, 1989Assignee: Pitney Bowes Inc.Inventor: John K. Eckl
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Patent number: 4809968Abstract: Side registering a sheet during forward movement of the sheet with lateral movement of the sheet causing one side edge of the sheet to engage a registration edge guide, by moving the sheet with skewed rollers providing a sheet engaging and driving nip, wherein the registration edge guide is substantially in one plane but has a small localized arcuate deformation out of that plane adjacent the nip, causing localized arcuate deformation of the sheet, the nip also being spaced from the plane by a corresponding amount, the localized arcuate deformation of the edge guide and the spacing of the nip providing localized bending of a portion of the sheet at the nip for improved side registering. The registration edge guide is preferably substantially linear V-shaped slot engaging one edge of the sheet therein and directing it toward a smooth bottom comprising only a small portion of the slot and lying substantially in the plane except at the localized arcuate deformation.Type: GrantFiled: March 21, 1988Date of Patent: March 7, 1989Assignee: Xerox CorporationInventor: Michael A. Malachowski
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Patent number: 4786045Abstract: A registration mechanism for offsetting paper sets against a registration edge which is alternately in an inboard and an outboard position. The paper sheet is urged against the registration edge by means of two rotating urathane paddle wheels positioned relatively closely to the registration edge, but the sheet is prevented from generating too much angular velocity by two restraining means in the form of TEFLON balls held in retainers which prevent the balls from moving laterally but allow the balls to move vertically and rotationally, these restraining means located relatively further away from the registration edge. Because the mechanism is operating in the absence of a sheet of paper most of the time, a freely spinning roller is provided in a space in the base plate under each wheel which normally is driven by the wheel in the absence of a sheet of paper at a speed sychronous to that of the wheel, thereby lessening the wear on the wheel.Type: GrantFiled: May 4, 1987Date of Patent: November 22, 1988Assignee: Xerox CorporationInventor: Ronald W. Sam
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Patent number: 4775143Abstract: There is an envelope deskewing device provided with a mailing machine having a horizontal feed deck, with an elongate registration guide which extends along one side edge. Mail is fed along a feed path determined by the registration guide and a postage meter located downstream from the deskewing device. A support is mounted over the upper surface of the feed deck with a first rotary frictional drive mounted on the support for feeding the envelopes parallel to the registration guide along the feed path. A second rotary frictional drive is mounted upstream from the first rotary drive for receiving the envelopes in a random orientation ranging from parallel to the registration guide to a predetermined angle with respect to the registration guide. An abutment device mounted on the support adjacent to the second rotary drive prevents an envelope from being fed by the second rotary drive if the envelope is placed on the feed deck at an angle greater than the predetermined angle.Type: GrantFiled: December 12, 1985Date of Patent: October 4, 1988Assignee: Pitney Bowes Inc.Inventors: Douglas R. Arnoldi, deceased, by Walter E. Arnoldi, administrator, John J. Stelben
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Patent number: 4775142Abstract: In a document processing machine, apparatus for urging documents against a registration fence while simultaneously driving the documents along a conveying path determined by the fence. The apparatus includes a housing frame, a registration fence secured to the frame, a deck secured to the frame for receiving the documents seriatim, a pair of cooperating rollers rotatably mounted on the frame, the rollers having crossed axes, one of the rollers being mounted in perpendicular relationship to the fence, and capability for driving the one roller. The one roller includes an elastomeric covering having disk portions separated by grooves the disk portions being radially segmented to thereby form individual petals. The other of the pair of rollers is resiliently biased against the one roller, thereby exerting a normal force acting toward the one roller to provide resultant component frictional forces for causing lateral and longitudinal movement of the document along the fence.Type: GrantFiled: February 26, 1987Date of Patent: October 4, 1988Assignee: Pitney Bowes Inc.Inventor: Morton Silverberg
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Patent number: 4744555Abstract: An apparatus in which a sheet is registered during the movement thereof. The sheet is moved along a path in a forward direction of movement and a lateral direction of movement substantially normal thereto. The lateral movement of the sheet causes the side edge of the sheet to engage a registration edge so as to be aligned thereat. The magnitude of the moving force applied on the sheet is proportional to the thickness of the sheet. In this way, the moving force varies as a function of the thickness of the sheet with the sheet slipping laterally when engaging the registration edge to prevent buckling thereof.Type: GrantFiled: December 22, 1986Date of Patent: May 17, 1988Assignee: Xerox CorporationInventors: Raymond A. Naramore, Anthony Ilacqua
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Patent number: RE33843Abstract: An apparatus in which a sheet is registered during the movement thereof. The sheet is moved along a path in a forward direction of movement and a lateral direction of movement substantially normal thereto. The lateral movement of the sheet causes the side edge of the sheet to engage a registration edge so as to be aligned thereat. The magnitude of the moving force applied on the sheet is proportional to the thickness of the sheet. In this way, the moving force varies as a function of the thickness of the sheet with the sheet slipping laterally when engaging the registration edge to prevent buckling thereof.Type: GrantFiled: March 20, 1989Date of Patent: March 10, 1992Assignee: Xerox CorporationInventors: Raymond A. Naramore, Anthony Ilacqua