Abstract: A heater includes: a substrate including metal and having a shape extending in one direction; a first insulating part provided on a first surface of the substrate; a first heating element provided on the first insulating part and extending along a longitudinal direction of the substrate; a first protection part provided on the first insulating part and covering the first heating element; a second insulating part provided on a second surface of the substrate facing the first surface; a second heating element provided on the second insulating part and extending along the longitudinal direction of the substrate; and a second protection part provided on the second insulating part and covering the second heating element. A length of the second heating element is different from a length of the first heating element in the longitudinal direction of the substrate.

Abstract: Provided is a heater including: a substrate that has electrical conductivity; a first insulation portion that is provided on a first surface of the substrate, has an insulation property; at least one heat generation body that is provided on the first insulation portion; a second insulation portion that is provided on a second surface of the substrate which is opposite to the first surface, has an insulation property; at least one detection unit that is provided on at least one of the first insulation portion and the second insulation portion; and a first wiring which is provided on at least one of the first insulation portion and the second insulation portion, and in which one end is electrically connected to one terminal of the detection unit and the other end is electrically connected to the substrate having the electrical conductivity.

Abstract: A heater according to embodiments includes: a base portion which contains metal, extends in a first direction, and has a first surface and a second surface facing the first surface; an insulating layer which is provided on the first surface side of the base portion; a heating element which is provided on the insulating layer and extends in the first direction; and a protection portion which covers the heating element. A peripheral edge of the base portion in a second direction intersecting the first direction extends in a third direction intersecting the first direction and the second direction.

Abstract: A heater includes: a substrate including metal and having a shape extending in one direction; a first insulating part provided on a first surface of the substrate; a first heating element provided on the first insulating part and extending along a longitudinal direction of the substrate; a first protection part provided on the first insulating part and covering the first heating element; a second insulating part provided on a second surface of the substrate facing the first surface; a second heating element provided on the second insulating part and extending along the longitudinal direction of the substrate; and a second protection part provided on the second insulating part and covering the second heating element. A length of the second heating element is different from a length of the first heating element in the longitudinal direction of the substrate.

Abstract: A heater according to an embodiment includes a substrate, a first wiring, a second wiring, and a plurality of first heating elements. Each first heating element includes an inclined portion, a first connecting portion, and a second connecting portion. When viewed from a direction perpendicular to the one surface of the substrate, the inclined portion is provided between the first wiring and the second wiring and inclined with respect to the first direction. An angle between the first (second) connecting portion side and the first (second) wiring side on an inclined portion side is larger than an angle between the first (second) wiring side on the inclined portion side and the inclined portion side on one (the other) side of the first direction where an angle between the inclined portion side and the first (second) wiring side on the inclined portion side is 90° or less.

Abstract: A heater includes: a substrate; a first heating element being provided on one surface of the substrate and extending in a longitudinal direction of the substrate; a second heating element being provided on one surface of the substrate, extending in the longitudinal direction of the substrate, and being provided side by side with the first heating element in a direction orthogonal to the longitudinal direction; a first detecting section being provided on one surface of the substrate and detecting a temperature; a wiring being electrically connected to one ends of the first heating element, the second heating element, and the first detecting section; a first terminal being electrically connected to the other end of the first heating element; a second terminal being electrically connected to the other end of the second heating element; and a third terminal being electrically connected to the other end of the first detecting section.

Abstract: A heater includes: a substrate; a first heating element being provided on one surface of the substrate and extending in a longitudinal direction of the substrate; a second heating element being provided on one surface of the substrate, extending in the longitudinal direction of the substrate, and being provided side by side with the first heating element in a direction orthogonal to the longitudinal direction; a first detecting section being provided on one surface of the substrate and detecting a temperature; a wiring being electrically connected to one ends of the first heating element, the second heating element, and the first detecting section; a first terminal being electrically connected to the other end of the first heating element; a second terminal being electrically connected to the other end of the second heating element; and a third terminal being electrically connected to the other end of the first detecting section.

Abstract: A heater including a rectangular substrate; a resistance heat-generating element that is provided on one surface of the substrate along a longitudinal direction of the substrate; a thermistor that is provided on the other surface, which is a rear side of the one surface of the substrate, and measures temperature of the substrate; and a conductor that is provided on the other surface of the substrate, is extended up to an end portion of the substrate from the thermistor along the longitudinal direction of the substrate, and supplies power to the thermistor. A first connecting portion and a second connecting portion, which are connected to the conductor, are provided at both ends of the thermistor. A connection direction, in which the first connecting portion and the second connecting portion are arranged on the other surface of the substrate, is different from a lateral direction of the substrate.

Abstract: A heater including a rectangular substrate; a resistance heat-generating element that is provided on one surface of the substrate along a longitudinal direction of the substrate; a thermistor that is provided on the other surface, which is a rear side of the one surface of the substrate, and measures temperature of the substrate; and a conductor that is provided on the other surface of the substrate, is extended up to an end portion of the substrate from the thermistor along the longitudinal direction of the substrate, and supplies power to the thermistor. A first connecting portion and a second connecting portion, which are connected to the conductor, are provided at both ends of the thermistor. A connection direction, in which the first connecting portion and the second connecting portion are arranged on the other surface of the substrate, is different from a lateral direction of the substrate.