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1. KR1020190014986 - SHEET SUPPLY APPARATUS AND IMAGE FORMING APPARATUS HAVING SAME

Office
Republic of Korea
Application Number 1020170099208
Application Date 04.08.2017
Publication Number 1020190014986
Publication Date 13.02.2019
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
B41J 11/24
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
24Detents, brakes, or couplings for feed rollers or platens
B65H 1/26
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
1Supports or magazines for piles from which articles are to be separated
26with auxiliary supports to facilitate introduction or renewal of the pile
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
Applicants HP PRINTING KOREA CO., LTD.
에이치피프린팅코리아 유한회사
Inventors AOKI EIJI
LEE, JIN SOO
아오키 에이지
이진수
Agents 정홍식
김태헌
Title
(EN) SHEET SUPPLY APPARATUS AND IMAGE FORMING APPARATUS HAVING SAME
(KO) 시트 공급장치 및 이를 포함하는 화상형성장치
Abstract
(EN) According to the present invention, a sheet supply apparatus comprises: a sheet loading unit loading at least one piece of a sheet; a paper supply roller installed at one side of the sheet loading unit, and transferring a sheet supplied from the sheet loading unit; a multi-feed prevention roller installed to face the paper supply roller, and preventing a multi-feed of the sheet supplied from the sheet loading unit; a magnetic torque limiter installed on the same axis with the multi-feed prevention roller; a hole sensor installed at one side of the magnetic torque limiter, and detecting rotation of the magnetic torque limiter; and a control unit rotating the paper supply roller in a state in which the paper supply roller and the multi-feed prevention roller are in contact with each other without a sheet, and determining durability of the multi-feed prevention roller with a signal outputted from the hole sensor. COPYRIGHT KIPO 2019
(KO) 본 발명에 의한 시트 공급장치는, 적어도 한 장의 시트를 적재하는 시트 적재유닛; 상기 시트 적재유닛의 일측에 설치되며, 상기 시트 적재유닛에서 공급되는 시트를 이송하는 급지 롤러; 상기 급지 롤러와 마주하도록 설치되며, 상기 시트 적재유닛에서 공급되는 시트의 중송을 방지하는 중송 방지 롤러; 상기 중송 방지 롤러와 동축상으로 설치되는 마그네틱 토크 리미터; 상기 마그네틱 토크 리미터의 일측에 설치되며, 상기 마그네틱 토크 리미터의 회전을 검출하는 홀 센서; 및 시트 없이 상기 급지 롤러와 상기 중송 방지 롤러가 접촉된 상태에서 상기 급지 롤러를 회전시키고, 상기 홀 센서에서 출력되는 신호를 이용하여 상기 중송 방지 롤러의 수명을 판단하는 제어부;를 포함한다.