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1. US20190344985 - USAGE DETERMINATION OF MULTI-FEED PREVENTION ROLLER

Office
United States of America
Application Number 16474448
Application Date 05.01.2018
Publication Number 20190344985
Publication Date 14.11.2019
Publication Kind A1
IPC
B65H 3/06
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
3Separating articles from piles
02using friction forces between articles and separator
06Rollers or like rotary separators
G03G 15/00
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
B65H 7/12
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
7Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
02by feelers or detectors
06responsive to presence of faulty articles or incorrect separation or feed
12responsive to double feed or separation
CPC
G03G 15/6511
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
65Apparatus which relate to the handling of copy material
6502Supplying of sheet copy material; Cassettes therefor
6511Feeding devices for picking up or separation of copy sheets
B65H 3/0669
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
3Separating articles from piles
02using friction forces between articles and separator
06Rollers or like rotary separators
0669Driving devices therefor
B65H 2403/72
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
2403Power transmission; Driving means
70Clutches; Couplings
72Clutches, brakes, e.g. one-way clutch +F204
B65H 2515/32
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
2515Physical entities not provided for in groups B65H2511/00 or B65H2513/00
30Force; Stress
32Torque; Moment
B65H 7/12
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
7Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
02by feelers or detectors
06responsive to presence of faulty articles or incorrect separation or feed
12responsive to double feed or separation
Applicants HP PRINTING KOREA CO., LTD.
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventors Eiji AOKI
Jin Soo LEE
Title
(EN) USAGE DETERMINATION OF MULTI-FEED PREVENTION ROLLER
Abstract
(EN)

A sheet feeding apparatus includes a sheet stacker to stack at least one sheet; a sheet feed roller disposed at one side of the sheet stacker and to feed a sheet fed from the sheet stacker; a multi-feed prevention roller disposed to face the sheet feed roller and to prevent multi-feed of the sheet fed from the sheet stacker; a magnetic torque limiter disposed coaxially with the multi-feed prevention roller; a hall sensor disposed at one side of the magnetic torque limiter and to detect rotation of the magnetic torque limiter; and a controller configured to rotate the sheet feed roller in a state in which the sheet feed roller and the multi-feed prevention roller are in contact with each other without a sheet and to identify a lifetime of the multi-feed prevention roller by using a signal output from the hall sensor.