US 12,339,613 B2
Image forming apparatus
Takeshi Sekiya, Chiba (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 13, 2023, as Appl. No. 18/539,053.
Claims priority of application No. 2022-202100 (JP), filed on Dec. 19, 2022.
Prior Publication US 2024/0201627 A1, Jun. 20, 2024
Int. Cl. G03G 15/08 (2006.01); G03G 21/16 (2006.01); G03G 15/00 (2006.01)
CPC G03G 21/1647 (2013.01) [G03G 15/0882 (2013.01); G03G 15/5037 (2013.01); G03G 2215/0687 (2013.01); G03G 2221/1657 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An image forming apparatus having a developing device provided to the image forming apparatus in a mountable and dismountable manner, wherein the developing device includes a sealing member for sealing to be removed at a time of starting use of the developing device, the image forming apparatus comprising:
a winding shaft configured to rotate for removal processing for removing the sealing member;
a drive source configured to drive the winding shaft; a detector configured to detect a value corresponding to a load torque applied to the drive source; and
a controller configured to notify of an error in a case where the value detected by the detector has become smaller than a predetermined value before a predetermined period of time elapses from start of the drive by the drive source.