US 12,006,182 B2
Medium feeding device and image reading apparatus
Takayuki Shiota, Kitakyushu (JP); Kazutoshi Nishida, Kitakyushu (JP); and Kiyotaka Nakamura, Kitakyushu (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Nov. 30, 2021, as Appl. No. 17/537,785.
Application 17/537,785 is a continuation of application No. 16/146,889, filed on Sep. 28, 2018, granted, now 11,292,683.
Claims priority of application No. 2017-191025 (JP), filed on Sep. 29, 2017.
Prior Publication US 2022/0089393 A1, Mar. 24, 2022
Int. Cl. B65H 7/12 (2006.01); B65H 3/06 (2006.01); B65H 7/06 (2006.01); H04N 1/00 (2006.01); H04N 1/32 (2006.01)
CPC B65H 7/12 (2013.01) [B65H 3/06 (2013.01); B65H 3/063 (2013.01); B65H 3/0653 (2013.01); B65H 7/06 (2013.01); H04N 1/00602 (2013.01); H04N 1/00681 (2013.01); H04N 1/00694 (2013.01); H04N 1/00702 (2013.01); H04N 1/00718 (2013.01); H04N 1/00734 (2013.01); H04N 1/00755 (2013.01); H04N 1/00777 (2013.01); H04N 1/3263 (2013.01); B65H 2402/46 (2013.01); B65H 2511/22 (2013.01); B65H 2513/10 (2013.01); B65H 2513/20 (2013.01); B65H 2513/40 (2013.01); B65H 2513/41 (2013.01); B65H 2513/512 (2013.01); B65H 2553/414 (2013.01); B65H 2557/242 (2013.01); B65H 2601/255 (2013.01); B65H 2701/1829 (2013.01); B65H 2701/18292 (2013.01); B65H 2801/39 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A medium feeding device comprising:
a medium placing portion over which a medium is placed;
a feeding roller configured to cooperate with a separating roller to feed the medium placed on the medium placing portion by coming into contact with a surface of the medium facing the medium placing portion and being rotated;
a medium movement detecting portion that is fixed to a surface of the medium placing portion in a placing region of the medium placing portion over which the medium to be fed by the feeding roller can be placed, the medium movement detecting portion being upstream of the feeding roller and the separating roller and being configured to detect movement of the medium toward opposite sides of a width direction intersecting a medium feeding direction, the medium movement detecting portion detecting movement of the medium at a location disposed in the placing region and spaced from edge guides that guide edges of the medium moved in the medium feeding direction, the medium movement detecting portion optically detects movement within a two-dimensional plane; and
a controller configured to stop feeding of the medium in a case in which a physical quantity relating to the movement of the medium in the width direction based on a detected result by the medium movement detecting portion exceeds a predetermined threshold,
wherein a pair of the medium movement detecting portions is provided with a gap therebetween in the width direction,
wherein the pair of medium movement detecting portions is respectively set as a first medium movement detecting portion and a second medium movement detecting portion, and
wherein the controller stops the feeding of the medium in a case in which a difference between a physical quantity relating to movement of the medium in the width direction being detected by the first medium movement detecting portion and a physical quantity relating to movement of the medium in the width direction being detected by the second medium movement detecting portion exceeds a predetermined threshold.