US 12,344,499 B2
Sheet processing apparatus and image forming system
Ryuhei Shoji, Shizuoka (JP); and Yasuhiro Nakahara, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 28, 2022, as Appl. No. 17/975,831.
Claims priority of application No. 2021-186730 (JP), filed on Nov. 17, 2021.
Prior Publication US 2023/0150789 A1, May 18, 2023
Int. Cl. B26D 7/18 (2006.01); B26F 1/44 (2006.01); B65H 37/00 (2006.01); B65H 43/08 (2006.01)
CPC B65H 43/08 (2013.01) [B26F 1/44 (2013.01); B65H 37/00 (2013.01); B65H 2301/531 (2013.01); B65H 2801/27 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A sheet processing apparatus comprising:
a conveyance unit configured to convey a sheet in a sheet conveyance direction;
a punching unit configured to punch a hole to the sheet being conveyed by the conveyance unit;
a moving unit configured to move the punching unit in an intersecting direction intersecting the sheet conveyance direction;
a detection unit arranged upstream of the punching unit in the sheet conveyance direction and configured to change an output value based on a position of an edge portion, in the intersecting direction, of the sheet being conveyed;
a cleaning portion configured to clean the detection unit; and
an interlocking portion configured to move the cleaning portion so as to clean the detection unit by interlocking with a movement of the punching unit in the intersecting direction.