US 11,988,982 B2
Heater, heating device, and image forming apparatus
Satoshi Nishida, Kanagawa (JP); Masahito Omata, Kanagawa (JP); Isamu Takeda, Tokyo (JP); and Takao Kume, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 28, 2022, as Appl. No. 17/936,279.
Claims priority of application No. 2021-160999 (JP), filed on Sep. 30, 2021.
Prior Publication US 2023/0101858 A1, Mar. 30, 2023
Int. Cl. G03G 15/20 (2006.01); H05B 3/00 (2006.01)
CPC G03G 15/2039 (2013.01) [G03G 15/2053 (2013.01); H05B 3/0095 (2013.01); H05B 2203/007 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A heater comprising:
a substrate having an elongated shape;
a first heating element and a second heating element disposed on a first surface of the substrate;
a temperature detection element disposed on a second surface of the substrate opposite the first surface of the substrate; and
a conductor disposed on the second surface and connected to the temperature detection element,
wherein the first heating element has a first distance from the temperature detection element in a lateral direction of the substrate orthogonal to a longitudinal direction of the substrate, and the second heating element has a second distance that is greater than the first distance from the temperature detection element in the lateral direction, and
wherein, as viewed in a thickness direction of the substrate orthogonal to the lateral direction and the longitudinal direction of the substrate, the conductor overlaps the first heating element and the second heating element.