公开(公告)号：CA1289581C

公开(公告)日：1991-09-24

申请号：CA521940

申请日：1986-10-31

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J ,  THOMAS KENDOLPH A

IPC: B65H3/12 ,  B65H3/48 ,  G03G15/00

Abstract: A top vacuum corrugation feeder employs a vacuum feedhead working in conjunction with an air knife to feed sheets from the top of a stack. The feedhead is valveless and has a vacuum applied thereto during the entire feed cycle in order to increase reliability and decrease minimum feed speed. The top vacuum corrugation feeder includes fluffer jets and vectored auxiliary fluffer jets in order to assist the air knife in separating severely downcurled sheets for feeding.

公开(公告)号：CA1175472A

公开(公告)日：1984-10-02

申请号：CA383728

申请日：1981-08-12

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J

IPC: B65H29/58 ,  B65H29/00 ,  B65H29/20 ,  G03G15/23 ,  G03G13/01 ,  G03G13/22 ,  G03G15/01 ,  G03G15/22

Abstract: A copier capable of producing simplex and duplex copies includes an inverter that has constantly rotating input and output rollers mounted for pivotal movement into and out of engagement with a reversibly rotatable sleeve that is mounted on a stationary shaft. When inversion of a sheet is required, a shiftable gate deflects the sheet into a nip formed between the input rollers and the rotatable sleeve. A sensor senses the trail edge of the sheet and through a controller causes a reversible drive motor to pivot the input rollers out of engagement with the sleeve while simultaneously placing the output rollers into driving engagement with the sleeve. The sheet is then driven by the output rollers out of the inverter and back into the paper path of the copier for further processing.

公开(公告)号：DE60126893T2

公开(公告)日：2007-09-13

申请号：DE60126893

申请日：2001-11-12

Applicant: XEROX CORP

Inventor： GOORAY ARTHUR M ,  ROLLER GEORGE J ,  GALAMBOS PAUL ,  PETER FRANK J ,  ZAVALDI KEVIN ,  GIVLER RICHARD C ,  HUMPHREYS RUSSEL D ,  SNIEGOWSKI JERFFRY J ,  CROWLEY JOSEPH JR

IPC: B41J2/045 ,  B41J2/14 ,  B41J2/015 ,  B41J2/055 ,  F04B9/00

Abstract: A primary coil (130) and a secondary coil (140) are situated in the ejector, which has a resiliently mounted movable piston (110) to eject fluid through a nozzle (122). A drive signal is applied to cause current to flow in the primary coil (130). The current flow generates a magnetic field that induces a current in the secondary coil (140). Either the primary coil (130) or the secondary coil (140) is associated with the piston (110) and the other is associated with a fixed structure (120) of the ejector. As a result, a magnetic force is generated that pushes the piston (110) either toward a nozzle plate (120) so that a drop is ejected through the nozzle (122) or away from the nozzle plate so that fluid fills the chamber. When the drive signal is turned off, the piston resiliently returns to its at-rest position, thereby either refilling the ejected fluid or ejecting a drop of fluid through the nozzle (122). In other embodiments, the nozzle plate is made of a magnetic material, or is coated with or connected to a magnetic material. Switching the direction of the current changes the magnetic force between attraction and repulsion and may be used positively to move the piston in both directions.

公开(公告)号：DE69318680D1

公开(公告)日：1998-06-25

申请号：DE69318680

申请日：1993-11-23

Applicant: XEROX CORP

Inventor： MARTIN MICHAEL J ,  ROLLER GEORGE J ,  VAN DONGEN RICHARD

IPC: B65H1/26 ,  B65H1/30 ,  B65H7/04 ,  G03G15/00

Abstract: A variable sheet sized sheet feeder adapted to be reloaded while running in a dual tray mode. A dual tray sheet feeder having a sheet transport (121) to reload a stack of sheets from a holding station (104) to an active feed station (102) is provided. The dual tray design allows the holding station to be reloaded while the active tray is feeding thereby providing load while run capability. The feed tray is further provided with tray extensions (103) to allow the loading and feeding of oversized sheets within the same confines. Multiple sensors and movable stack guides (112,114) are provided to allow the transfer of the sheet stack from one tray to another and to report the status of each tray to the operator through a user interface.

公开(公告)号：DE69216051T2

公开(公告)日：1997-06-19

申请号：DE69216051

申请日：1992-10-15

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J

IPC: B65H9/00 ,  B65H9/10 ,  B65H9/20 ,  G03G15/00 ,  B65H7/08

Abstract: An apparatus and method to deskew sheets (100) in a short paper path in an electrophotographic printing machine by differentially driving two sets of rolls so as to create a paper buckle buffer zone (102) in the sheet (100) and then differentially driving a roll set (24,25,26,27) to correct the skew while the sheet (100) is still within the nips of multiple drive roll sets (24,25,26,27,34,35,36,37). Contrary to stalled roll techniques, leading edge damage to sheets is eliminated as the deskewing rolls are initially traveling at the same velocity as the sheet.

公开(公告)号：DE69216051D1

公开(公告)日：1997-01-30

申请号：DE69216051

申请日：1992-10-15

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J

IPC: B65H9/00 ,  B65H9/10 ,  B65H9/20 ,  G03G15/00 ,  B65H7/08

Abstract: An apparatus and method to deskew sheets (100) in a short paper path in an electrophotographic printing machine by differentially driving two sets of rolls so as to create a paper buckle buffer zone (102) in the sheet (100) and then differentially driving a roll set (24,25,26,27) to correct the skew while the sheet (100) is still within the nips of multiple drive roll sets (24,25,26,27,34,35,36,37). Contrary to stalled roll techniques, leading edge damage to sheets is eliminated as the deskewing rolls are initially traveling at the same velocity as the sheet.

公开(公告)号：DE69303504T2

公开(公告)日：1996-12-19

申请号：DE69303504

申请日：1993-01-20

Applicant: XEROX CORP

Inventor： MANDEL BARRY P ,  BRANT WILLIAM ,  ROLLER GEORGE J ,  BRESSLER LOUIS J ,  FERRARA JOSEPH F ,  FALVO JOHN R ,  KAMATH VENKATESH H ,  KAU KARL M

IPC: B41J29/00 ,  B42C1/12 ,  B42C9/00 ,  B42C9/02 ,  B65H39/00 ,  G03G15/00

公开(公告)号：DE69015568D1

公开(公告)日：1995-02-09

申请号：DE69015568

申请日：1990-10-23

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J

IPC: B65H9/04 ,  B65H9/10 ,  B65H9/16 ,  G03G15/00

公开(公告)号：CA1258273A

公开(公告)日：1989-08-08

申请号：CA492462

申请日：1985-10-08

Applicant: XEROX CORP

Inventor： ROLLER GEORGE J

IPC: B65H3/12 ,  B65H3/48

Abstract: A top vacuum corrugation feeder is disclosed that employs a vacuum feedhead working in conjunction with an air knife to feed sheets from the top of a stack. The feedhead is valveless and has a vacuum applied thereto during the entire feed cycle in order to increase reliability and decrease minimum feed speed.

公开(公告)号：JPH11138790A

公开(公告)日：1999-05-25

申请号：JP22837598

申请日：1998-08-12

Applicant: XEROX CORP

Inventor： SILVERBERG MORTON ,  ROLLER GEORGE J

IPC: B41J2/01 ,  B41J2/13 ,  H04N1/17 ,  H04N1/23

Abstract: PROBLEM TO BE SOLVED: To enhance the printing performance in an ink jet digital copying method by recognizing the marginal part previously. SOLUTION: A document image is scanned at high speed with low resolution in order to specify the marginal part previously and if the marginal part of a specified document image has a sufficient size, a print head is controlled to skip the marginal part at the time of printing. It is also applicable to a document image of half tone or a document image having a monochromatic part.