Patent ID: 11940747
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. The heater according to claim 1, further comprising:
a third temperature detection element arranged on the second surface;
a fourth temperature detection element arranged on the second surface;
a fifth conductor arranged on the second surface and connecting the third temperature detection element and a third power supply terminal; and
a sixth conductor arranged on the second surface and connecting the fourth temperature detection element and a fourth power supply terminal,
wherein the first conductor connects the third temperature detection element and a third grounding terminal,
wherein the third conductor connects the fourth temperature detection element and a fourth grounding terminal,
wherein, in the longitudinal direction of the heater, a distance from the center portion of the heater to the third temperature detection element is a third distance, and a distance from the center portion of the heater to the fourth temperature detection element is a fourth distance that is longer than the third distance, and
wherein, in a fourth area which is farther from the center portion of the heater than the fourth temperature detection element is from the center portion of the heater in the longitudinal direction of the heater, a distance between the first conductor and the fifth conductor in the transverse direction of the heater is a fourth inter-conductor distance and a distance between the third conductor and the sixth conductor in the transverse direction of the heater is a fifth inter-conductor distance that is longer than the fourth inter-conductor distance.