US 12,366,818 B2
Image forming apparatus to suppress gloss unevenness
Shohei Tsuzaki, Chiba (JP); Asuna Fukamachi, Chiba (JP); Yusuke Yamaguchi, Chiba (JP); Hiroshi Miyamoto, Saitama (JP); Yasuharu Toratani, Chiba (JP); Keisuke Yoshida, Chiba (JP); Shutaro Saito, Tokyo (JP); Yuya Yamada, Chiba (JP); and Taku Ashida, Shizuoka (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 12, 2023, as Appl. No. 18/486,069.
Claims priority of application No. 2022-166038 (JP), filed on Oct. 17, 2022.
Prior Publication US 2024/0126197 A1, Apr. 18, 2024
Int. Cl. G03G 15/00 (2006.01); G03G 15/20 (2006.01)
CPC G03G 15/2064 (2013.01) [G03G 15/2025 (2013.01); G03G 15/607 (2013.01); G03G 15/6585 (2013.01); G03G 2215/00805 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a reception unit configured to receive a job for image formation on a recording material;
a heating rotary member configured to rotate and to heat the recording material;
a pressing rotary member configured to come into contact with the heating rotary member to form a nip portion, wherein, at the nip portion, the pressing rotary member together with the heating rotary member fixes a toner image to the recording material; and
a spraying member configured to spray air on the recording material and the heating rotary member and including a nozzle and a cylinder configured to send air to the nozzle,
wherein the nozzle is configured to discharge air to the heating rotary member and the recording material, and is located downstream of the nip portion in a conveyance direction of the recording material,
wherein, during a period after the reception unit receives the job and before a leading edge of a first sheet of the recording material reaches the nip portion, the spraying member performs a spraying operation of spraying the air in an amount greater than or equal to a predetermined amount, and
wherein the air that the spraying member sprays on the first sheet of the recording material during the job is higher in temperature than the air that the spraying member sprays during the period after the reception unit receives the job and before the leading edge of the first sheet of the recording material reaches the nip portion.