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1. IN201947018439 - USAGE DETERMINATION OF MULTI-FEED PREVENTION ROLLER

Office
India
Application Number 201947018439
Application Date 08.05.2019
Publication Number 201947018439
Publication Date 12.07.2019
Publication Kind A
IPC
B41J 11/36
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
11Devices or arrangements for supporting or handling copy material in sheet or web form
36Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
Applicants HP PRINTING KOREA CO., LTD.
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.