US 12,085,876 B2
Fixing apparatus
Satoshi Seki, Tokyo (JP); Ryosuke Yamazaki, Chiba (JP); and Osamu Someya, Ibaraki (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 14, 2023, as Appl. No. 18/183,478.
Claims priority of application No. 2022-061619 (JP), filed on Apr. 1, 2022.
Prior Publication US 2023/0314988 A1, Oct. 5, 2023
Int. Cl. G03G 15/20 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/2028 (2013.01) [G03G 15/5029 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a heating rotary member configured to apply heat to a recording material;
a pressurizing rotary member configured to form a nip portion by pressurizing the heating rotary member,
wherein the heating rotary member and the pressurizing rotary member apply heat and pressure to the recording material to perform fixing of a toner image on the recording material;
an acquisition unit configured to acquire information about a grammage of the recording material on which the toner image fixing is to be executed; and
a speed control unit configured to control a conveyance speed of the recording material at the nip portion,
wherein a job in which a first recording material of a first grammage and a second recording material of a second grammage greater than the first grammage are mixed is specified as a mixed job,
wherein the speed control unit is capable of setting the conveyance speed of the recording material to a first speed or a second speed faster than the first speed,
wherein the mixed job can be executed in any one of a plurality of modes including a first mode and a second mode,
wherein, in a case where the mixed job is a first mixed job to be executed in the first mode and the first recording material is to be initially conveyed and the second recording material is to be conveyed subsequent to the first recording material, the speed control unit sets a conveyance speed of the first recording material to the second speed based on the acquired grammage information and sets a conveyance speed of the second recording material to the first speed based on the acquired grammage information, and
wherein, in a case where the mixed job is a second mix job to be executed in the second mode and the first recording material is to be initially conveyed and the second recording material is to be conveyed subsequent to the first recording material, the speed control unit sets the conveyance speed of the first recording material and of the second recording material to the first speed based on the acquired grammage information.