US 12,169,387 B2
Image forming apparatus
Keita Kondo, Tokyo (JP); Kenichi Tanaka, Ibaraki (JP); and Atsushi Yoshida, Chiba (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 17, 2023, as Appl. No. 18/185,562.
Claims priority of application No. 2022-051436 (JP), filed on Mar. 28, 2022.
Prior Publication US 2023/0305488 A1, Sep. 28, 2023
Int. Cl. G03G 21/20 (2006.01); G03G 15/20 (2006.01)
CPC G03G 21/206 (2013.01) [G03G 15/2028 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image forming unit configured to form a toner image on a recording material;
a fixing unit configured to nip and convey the recording material on which the toner image has been formed by the image forming unit while applying heat and pressure to the recording material so as to fix the toner image on the recording material, the fixing unit including a rotary member pair configured to form a first nip portion;
a cooling unit disposed downstream of the fixing unit in a conveyance direction of the recording material, the cooling unit being configured to form a second nip portion cooling the recording material, on which the toner image has been fixed by the fixing unit, by nipping and conveying the recording material;
a drive unit configured to drive the cooling unit;
an obtaining unit configured to obtain information regarding torque of the drive unit; and
a control unit configured to control the drive unit based on the information,
wherein in a state where the recording material is nipped by the first nip portion and the second nip portion, if the information is equal to or less than a threshold value, the control unit is configured to set a conveyance speed of the cooling unit at a first speed larger than a conveyance speed of the fixing unit, and,
wherein in the case where the recording material is nipped by the first nip portion and the second nip portion, if the information is larger than the threshold value, the control unit is configured to set the conveyance speed of the cooling unit at a second speed smaller than the conveyance speed of the fixing unit.