Heating device with a heat conductor including portions having different thicknesses

An image processing apparatus, comprising:

• a heating device including:
• a rotatable film,
• a heater including:
• a substrate that extends along a first direction, and
• a heater element on the substrate and facing the film,
• a heat conductor having first and second surfaces and including:
• a first portion contacting the substrate, and
• a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the substrate, and
• a temperature sensing element on the second surface at a position corresponding to the second portion;
• and
• a controller configured to control the heating device for an image processing operation, wherein
• a thickness of the first portion from the first surface to the second surface is greater than a thickness of the second portion from the first surface to the second surface.

A heating device, comprising:

• a rotatable film;
• a heater including:
• a substrate that extends along a first direction, and
• a heater element on the substrate and facing the film;
• a heat conductor having first and second surfaces and including:
• a first portion contacting the substrate,
• a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the substrate, and
• a protrusion on the second surface that is centered with respect to two edges of the heat conductor along the second direction;
• and
• a temperature sensing element on the protrusion at a position corresponding to the second portion.