US 12,455,520 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 Aug. 16, 2024, as Appl. No. 18/807,778.
Application 18/807,778 is a continuation of application No. 18/183,478, filed on Mar. 14, 2023, granted, now 12,085,876.
Claims priority of application No. 2022-061619 (JP), filed on Apr. 1, 2022.
Prior Publication US 2024/0411252 A1, Dec. 12, 2024
Int. Cl. G03G 15/20 (2006.01); G03G 15/00 (2006.01)
CPC G03G 15/2028 (2013.01) [G03G 15/5029 (2013.01)] 12 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 basis weight of the recording material on which the toner image fixing is to be executed;
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 different from 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; and
an execution unit configured to selectively execute, in a case where a mixed job of forming a toner image on a plurality of recording materials including a first recording material of a first grammage and a second recording material of a second grammage different from the first grammage, wherein a first sheet has the first grammage and a second sheet has the second grammage, is to be executed, one mode from among a plurality of modes including
a first mode in which, before setting the conveyance speed of the first sheet of the mixed job, information about a first basis weight of the first sheet of the mixed job and information about a second basis weight of the second sheet of the mixed job are acquired by the acquisition unit, and the speed control unit sets the conveyance speed for conveying the first sheet of the mixed job to a first conveyance speed based on the information about the first basis weight and the information about the second basis weight and sets the conveyance speed for conveying the second sheet of the mixed job to a second conveyance speed based on the information about the first basis weight and the information about the second basis weight, and
a second mode for setting the conveyance speed of the first sheet of the mixed job to a third conveyance speed based on the information about the first basis weight acquired by the acquisition unit and not based on the information about the second basis weight acquired by the acquisition unit, and setting the conveyance speed of the second sheet of the mixed job to a fourth conveyance speed based on the information about the second basis weight acquired by the acquisition unit and not based on the information about the first basis weight acquired by the acquisition unit,
wherein the first conveyance speed is a same as the second conveyance speed.