Title:
PAPER FEEDER, PAPER FEED ROLL, AND SEPARATION ROLL
Document Type and Number:
WIPO Patent Application WO/2021/085365
Kind Code:
A1
Abstract:
Provided are a paper feeder, paper feed roll, and separation roll that suppress paper jams after long-term use. The paper feeder 10 comprises a paper feed roll 12 that is rotationally driven and conveys paper P, and a separation roll 14 that is pressed against the paper feed roll 12 and has a built-in torque limiter to suppress double feed of the paper P. The paper feed roll 12 and the separation roll 14 each have a surface comprising an elastic body containing polyurethane, each have a surface roughness Rz of 20 μm or more, and have a difference in JIS-A hardness of 5 degrees or more on the surfaces. The coefficient of friction between the paper feed roll 12 and the separation roll 14 is in the range of 1.0-3.0.
Inventors:
YAMAGUCHI KAZUSHI (JP)
KAWANO ATSUHIRO (JP)
DOI KAZUHIRO (JP)
KAWANO ATSUHIRO (JP)
DOI KAZUHIRO (JP)
Application Number:
PCT/JP2020/040059
Publication Date:
May 06, 2021
Filing Date:
October 26, 2020
Export Citation:
Assignee:
SUMITOMO RIKO CO LTD (JP)
International Classes:
B65H5/06; B65H3/06; B65H3/52
Foreign References:
| JP2004299842A | 2004-10-28 | |||
| JP3633658B2 | 2005-03-30 | |||
| JP2004277025A | 2004-10-07 | |||
| JP2017061358A | 2017-03-30 | |||
| JP2002120944A | 2002-04-23 | |||
| JP2002120952A | 2002-04-23 | |||
| JPS6217648U | 1987-02-02 | |||
| JP2008207910A | 2008-09-11 | |||
| JP2005255382A | 2005-09-22 | |||
| JPH05319595A | 1993-12-03 |
Attorney, Agent or Firm:
WENO & PARTNERS (JP)
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