公开(公告)号：CA2104272A1

公开(公告)日：1994-05-25

申请号：CA2104272

申请日：1993-08-17

Applicant: XEROX CORP

Inventor： REID PAULA E ,  THOMAS KENDOLPH A ,  FALVO JOHN R ,  RIZZOLO CHARLES D ,  MILILLO WILLIAM D ,  SMOAK JAMES F ,  TABER MICHELE D

IPC: B65H3/04 ,  B65H3/12 ,  B65H3/48 ,  B65H5/00 ,  B65H7/20 ,  B65H9/04

Abstract: A bottom vacuum corrugated feeder (BVCF) includes a tray for supporting a stack of documents. The tray is angled downhill relative to the feeding direction of the documents such that the leading edge of the stack is urged to a common stop member. The tray also includes a single side guide for aligning one side edge of the stack. A stack height sensor sends a signal corresponding to stack height to a controller which in turn controls voltage to be applied to a DC motor controlled blower based on a predetermined ratio of air flow pressure to stack pressure. The structure enables intermixed size document feeding in a BVCF.

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：CA1282806C

公开(公告)日：1991-04-09

申请号：CA521939

申请日：1986-10-31

Applicant: XEROX CORP

Inventor： THOMAS KENDOLPH A

IPC: B65H3/12 ,  B65H3/14 ,  B65H3/48 ,  G03G17/00

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 air knife includes fluffer jets and vectored auxiliary fluffer jets in order to assist in separating and feeding downcurled sheets. To improve sheet acquisition, increase reliability and decrease minimum feed speed, a vacuum plenum is preferably equipped with a negative pressure source that is on continuously during the feed cycle, with the only criteria for sheet feeding being that the rotation of the vacuum feedhead is closed prior to the trail edge of the acquired sheet exposing all of the vacuum ports.

公开(公告)号：CA2104272C

公开(公告)日：1999-01-12

申请号：CA2104272

申请日：1993-08-17

Applicant: XEROX CORP

Inventor： REID PAULA E ,  THOMAS KENDOLPH A ,  FALVO JOHN R ,  RIZZOLO CHARLES D ,  MILILLO WILLIAM D ,  SMOAK JAMES F ,  TABER MICHELE D

IPC: B65H3/04 ,  B65H3/12 ,  B65H3/48 ,  B65H5/00 ,  B65H9/04 ,  B65H7/20

Abstract: A bottom vacuum corrugated feeder (BVCF) includes a tray for supporting a stack of documents. The tray is angled downhill relative to the feeding direction of the documents such that the leading edge of the stack is urged to a common stop member. The tray also includes a single side guide for aligning one side edge of the stack. A stack height sensor sends a signal corresponding to stack height to a controller which in turn controls voltage to be applied to a DC motor controlled blower based on a predetermined ratio of air flow pressure to stack pressure. The structure enables intermixed size document feeding in a BVCF.