Patent ID: 11953851
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G  H | IPC G  H

Claim 2:
3. The heater according to claim 1, further comprising: a third heating block provided on the substrate and configured to generate heat by electric power supplied thereto; a third temperature sensor provided at a position corresponding to the third heating block in the longitudinal direction of the substrate; and a third conductive pattern provided on the substrate, the third conductive pattern is electrically coupled to the third temperature sensor at a first end of the third conductive pattern, wherein the second end of the first conductive pattern and the second end of the second conductive pattern are located a first end side of the substrate in the longitudinal direction of the substrate, and wherein a second end of the third conductive pattern is located a second end side of the substrate in the longitudinal direction of the substrate.