US 12,066,773 B2
Image forming apparatus
Koichi Taniguchi, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 24, 2023, as Appl. No. 18/237,629.
Application 18/237,629 is a division of application No. 17/870,193, filed on Jul. 21, 2022, granted, now 11,789,384.
Application 17/870,193 is a continuation of application No. PCT/JP2021/002704, filed on Jan. 20, 2021.
Claims priority of application No. 2020-008791 (JP), filed on Jan. 22, 2020.
Prior Publication US 2023/0393497 A1, Dec. 7, 2023
Int. Cl. G03G 15/20 (2006.01); G03G 15/16 (2006.01)
CPC G03G 15/1615 (2013.01) 1 Claim
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image bearing member configured to bear a toner image;
a transfer roller configured to form a transfer nip between the image bearing member and the transfer roller for transferring the toner image;
a first position changing mechanism configured to change a position of the transfer nip with respect to a rotational direction of the image bearing member; and
a second position changing mechanism configured to change the position of the transfer roller between a first position where the transfer roller presses the image bearing member to form the transfer nip and a second position where the transfer roller does not press the image bearing member,
wherein the first position changing mechanism is capable of changing the position of the transfer nip to either a first transfer nip position or a second transfer nip position different from the first transfer nip position with respect to the rotational direction of the image bearing member,
wherein the second position changing mechanism is capable of changing the position of the transfer roller to the second position where the transfer roller does not press the image bearing member without changing the position of the transfer nip to the second transfer nip position when the position of the transfer nip is in the first transfer nip position, and
wherein the second position changing mechanism is capable of changing the position of the transfer roller to the second position where the transfer roller does not press the image bearing member without changing the position of the transfer nip to the first transfer nip position when the position of the transfer nip is in the second transfer nip position.