US 12,253,818 B2
Image forming apparatus
Hiroki Sasaki, Shizuoka (JP); and Yoshiteru Kaida, Shizuoka (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 13, 2022, as Appl. No. 18/064,985.
Claims priority of application No. 2021-204612 (JP), filed on Dec. 16, 2021.
Prior Publication US 2023/0195019 A1, Jun. 22, 2023
Int. Cl. B65H 1/14 (2006.01); B65H 1/24 (2006.01); B65H 1/26 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/55 (2013.01) [B65H 1/14 (2013.01); B65H 1/24 (2013.01); B65H 1/266 (2013.01); B65H 2551/21 (2013.01); B65H 2553/51 (2013.01); B65H 2801/03 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An image forming apparatus provided with an image forming portion for forming an image onto a sheet, the image forming apparatus comprising:
a stacking portion on which the sheet is stacked, the stacking portion including a lifting portion;
a feeding member configured to feed the sheet stacked on the lifting portion toward the image forming portion;
a motor configured to perform a lifting operation to lift the lifting portion so that the sheet stacked on the lifting portion is moved toward a feedable position in which the feeding member can feed the sheet stacked on the lifting portion;
a position detecting sensor configured to detect that the sheet is in the feedable position;
a rotator configured to be rotated by the motor;
a rotation detector configured to detect rotation of the rotator; and
a controller configured to determine a factor in which the position detecting sensor does not detect the sheet in the feedable position within a predetermined time, based on a detection result of the rotation detector during the lifting operation.