US 11,994,823 B2
Image forming apparatus
Shingo Ito, Tokyo (JP); Toshihiko Takayama, Kanagawa (JP); Shuichi Tetsuno, Kanagawa (JP); and Hiroko Katagiri, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 3, 2023, as Appl. No. 18/149,350.
Claims priority of application No. 2022-002364 (JP), filed on Jan. 11, 2022.
Prior Publication US 2023/0221673 A1, Jul. 13, 2023
Int. Cl. G03G 21/00 (2006.01); G03G 21/16 (2006.01)
CPC G03G 21/0035 (2013.01) [G03G 21/0064 (2013.01); G03G 21/1676 (2013.01); G03G 21/168 (2013.01); G03G 2221/0005 (2013.01); G03G 2221/0047 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a rotatable image bearing member;
a developing member configured to develop an electrostatic latent image formed on the image bearing member using a developer at a developing portion;
a transfer member configured to transfer a developer image developed by the developing member from the image bearing member to a transferred member at a transfer portion; and
a brush contacting the image bearing member at a position of downstream of the transfer portion and upstream of the developing portion with respect to a rotational direction of the image bearing member,
wherein the developer remaining on the surface of the image bearing member is collected at the developing portion, and
wherein an average distance between bristle materials of the brush with respect to a rotational axis direction of the image bearing member is larger than an average particle diameter of the developer, and is equal to or less than a length corresponding to a spatial frequency of 50 cycles/degree.