US 12,441,566 B2
Medium conveyance apparatus to determine whether tilt angle of medium has changed based on time from when any sensor detects medium to when another sensor detects medium
Kiichiro Shimosaka, Kahoku (JP); and Syuichi Morikawa, Kahoku (JP)
Assigned to PFU LIMITED, Kahoku (JP)
Filed by PFU LIMITED, Kahoku (JP)
Filed on Sep. 20, 2023, as Appl. No. 18/470,845.
Claims priority of application No. 2022-167896 (JP), filed on Oct. 19, 2022.
Prior Publication US 2024/0132314 A1, Apr. 25, 2024
Prior Publication US 2024/0228208 A9, Jul. 11, 2024
Int. Cl. B65H 7/06 (2006.01); B65H 7/14 (2006.01); B65H 9/00 (2006.01)
CPC B65H 7/06 (2013.01) [B65H 7/14 (2013.01); B65H 9/002 (2013.01); B65H 2511/24 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A medium conveyance apparatus comprising:
a conveyance roller to convey a medium;
a first sensor located at a center part of a medium conveyance path in a direction perpendicular to a medium conveyance direction;
a second sensor located at a downstream side from the first sensor in the medium conveyance direction and at the center part of the medium conveyance path in the direction perpendicular to the medium conveyance direction;
a third sensor located at a downstream side from the second sensor in the medium conveyance direction and at the one side of the medium conveyance path in the direction perpendicular to the medium conveyance direction; and
a processor to determine whether a tilt angle of the medium being conveyed has changed based on a time from when the first sensor detects the medium to when the second sensor detects the medium when the first sensor detects the medium first, the third sensor detects the medium second, and the second sensor detects the medium third.