US 11,891,266 B2
Medium conveying apparatus to determine whether multi-feed has occurred based on whether outer shape of object area in input image is rectangular
Masaaki Sakai, Kahoku (JP)
Assigned to PFU LIMITED, Kahoku (JP)
Filed by PFU LIMITED, Kahoku (JP)
Filed on Jan. 18, 2022, as Appl. No. 17/578,117.
Claims priority of application No. 2021-024516 (JP), filed on Feb. 18, 2021.
Prior Publication US 2022/0258997 A1, Aug. 18, 2022
Int. Cl. B65H 7/12 (2006.01); B65H 7/18 (2006.01)
CPC B65H 7/125 (2013.01) [B65H 7/18 (2013.01); B65H 2511/13 (2013.01); B65H 2511/524 (2013.01); B65H 2553/30 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A medium conveying apparatus comprising:
a conveying roller to convey a rectangular medium; and
a processor to
generate an input image acquired by imaging the conveyed medium,
determine whether an overlap of the conveyed medium has occurred,
determine whether an outer shape of an object area included in the input image is rectangular,
determine whether a multi-feed of the medium has occurred based on whether it is determined that the overlap of the medium has occurred and whether the outer shape of the object area is rectangular, and
execute an abnormality processing when it is determined that the multi-feed of the medium has occurred.