Title:
MEDIUM FEEDER
Document Type and Number:
WIPO Patent Application WO/2023/095352
Kind Code:
A1
Abstract:
Provided is a medium feeder capable of feeding a medium more satisfactorily. This medium feeder comprises: a feed roller for feeding a medium; a resin separation roller disposed to face the feed roller; and a pressing unit that presses one of the feed roller and the separation roller against the other roller so that a nip area is formed at the position where the feed roller and the separation roller contact each other. A plurality of grooves arranged perpendicular to the media feeding direction are formed in the surface of the feed roller. The pitch of the plurality of grooves is set such that at least one groove is always present in the nip area during media feeding. The width of the plurality of grooves is set to be 0.5 mm or more, and the contact area ratio S is set to be 0.5 or more. The contact area ratio S is {(the surface area of the feed roller in the nip area−the area of the groove of the feed roller in the nip area)}/(the surface area of the feed roller in the nip area).
Inventors:
MORIKAWA SYUICHI (JP)
SHIMOSAKA KIICHIRO (JP)
SHIMOSAKA KIICHIRO (JP)
Application Number:
PCT/JP2021/043697
Publication Date:
June 01, 2023
Filing Date:
November 29, 2021
Export Citation:
Assignee:
PFU LTD (JP)
International Classes:
B65H3/06; B65H5/06
Foreign References:
| JP2019127363A | 2019-08-01 | |||
| JPH0853251A | 1996-02-27 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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