US 12,084,304 B2
Medium-feeding apparatus, image reading apparatus, and medium-feeding method
Seiji Eguchi, Kitakyushu (JP); and Takayuki Shiota, Kitakyushu (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Dec. 6, 2021, as Appl. No. 17/457,784.
Claims priority of application No. 2020-202678 (JP), filed on Dec. 7, 2020.
Prior Publication US 2022/0177244 A1, Jun. 9, 2022
Int. Cl. B65H 7/08 (2006.01); B65H 7/06 (2006.01); B65H 7/20 (2006.01); H04N 1/00 (2006.01)
CPC B65H 7/08 (2013.01) [H04N 1/00602 (2013.01); H04N 1/00705 (2013.01); H04N 1/00745 (2013.01); H04N 1/00774 (2013.01); H04N 1/00795 (2013.01); B65H 2511/24 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A medium-feeding apparatus comprising:
a medium mounting section on which a medium is to be mounted;
a feeding roller configured to feed the medium mounted on the medium mounting section in a feeding direction;
a movement detector disposed upstream of the feeding roller in the feeding direction, the movement detector being configured to output information on movement of the medium in a first direction parallel to the feeding direction and in a second direction intersecting the feeding direction;
a transport roller pair disposed downstream of the feeding roller in the feeding direction, the transport roller pair being configured to transport the medium downstream; and
a control unit configured to control feeding of the medium in accordance with the information acquired from the movement detector, wherein
the control unit is configured to perform abnormal feeding processing depending on the movement of the medium in the second direction, wherein
in the abnormal feeding processing, the control unit stops feeding of the medium when a first value indicating the movement of the medium in the first direction is within an allowable range and a second value indicating the movement of the medium in the second direction exceeds a threshold,
continues feeding of the medium when the first value is outside the allowable range,
the control unit performs the abnormal feeding processing in a first period from passage of a leading edge of the medium past the feeding roller to arrival of the leading edge at the transport roller pair, and
does not perform the abnormal feeding processing in a period, other than the first period, from the start of feeding of the medium to the arrival of the leading edge at the transport roller pair.