Patent ID: 11953850
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A heater for use in an image heating apparatus, the heater comprising:
a substrate;
a first conductor and at least one second conductor provided on the substrate along a longitudinal direction of the substrate; and
a plurality of heating elements arranged between the first conductor and the at least one second conductor and electrically connected in parallel to the first conductor and the at least one second conductor,
wherein the plurality of heating elements are inclined to both the longitudinal direction and a direction perpendicular to the longitudinal direction, and
wherein each shape of the plurality of heating elements is a parallelogram other than a rectangle,
wherein the parallelogram of each of the plurality of heating elements includes a rectangle area, and
wherein, if d is a length of a long side of the rectangle area included in one of the plurality of heating elements, which has two corners at both ends of a shortest current path of the one of the plurality of heating elements, and A is a gap of the first conductor and the at least one second conductor, a ratio d/A satisfies 127%≤the ratio d/A≤166%.