A heater assembly includes a tubular body, a heater, and a support member. The tubular body is formed in a tubular shape and has a length that extends longitudinally. The heater is received within the tubular body. The heater provides thermal energy in response to being electrically energized. The heater includes a first surface side extending laterally and longitudinally along an inner peripheral surface of the tubular body. The heater includes n electrical contact, through which electrical energy is supplied to the heater. The support member is coupled to the heater and extends longitudinally. The support member defines an opening that exposes the electrical contact. The support member is configured to bend to facilitate coupling the heater to the support member.

A heating apparatus, an image forming apparatus, and a liquid discharge apparatus. The heating apparatus includes a heating roller having a heat source inside, an end holder in which a portion of the heat source is disposed, the end holder holding an axial end of the heating roller rotatably, and an air supply device configured to supply air into the end holder in a direction intersecting with an axial direction of the heating roller. The heating apparatus includes a heating roller having a heat source inside, and an end holder in which a portion of the heat source is disposed, the end holder rotatably holding an axial end of the heating roller. In the heating apparatus, the end holder has an air inlet opening through which air is supplied into the end holder and an air outlet opening through which air is ejected outside from inside the end holder.

An image heating apparatus includes an image heating portion including first, second, and third heat generating blocks divided in a direction orthogonal to a conveying direction of the recording material. The image heating apparatus also includes a first driving circuit, a second driving circuit, a first temperature detection member, and a second temperature detection member. A control portion controls the first and second driving circuits according to at least one of the temperatures detected by the first and second temperature detection members, and controls energization of the second heat generating block together with a heat generating block that is energized by a driving circuit connected to the second heat generating block. In addition, a connection switching portion selectively connects any one of the first and second driving circuits to the second heat generating block according to a switching instruction from the control portion.

In an image heating device having a plurality of heating blocks which are controllable independently in a longitudinal direction of a heater, an increase of the size of the heater can be suppressed, and temperatures of a plurality of heating block can be detected. The heater has a first temperature sensor corresponding to a first heating block, a second temperature sensor corresponding to a second heating block, a first electric conductor electrically coupled to the first temperature sensor, a second electric conductor electrically coupled to the second temperature sensor, and a common electric conductor electrically coupled to the first and second temperature sensors.

In an image heating device having a plurality of heating blocks which are controllable independently in a longitudinal direction of a heater, an increase of the size of the heater can be suppressed, and temperatures of a plurality of heating block can be detected. A heater has a first temperature sensor corresponding to a first heating block, a second temperature sensor corresponding to a second heating block, a first electric conductor electrically coupled to the first temperature sensor, a second electric conductor electrically coupled to the second temperature sensor, and a common electric conductor electrically coupled to the first and second temperature sensors.

Provided is a heater that is excellent in heat equalizing property even when being narrow in a sweep direction. Also provided are a fixing device, an image-forming device, and a heating device each including such a heater. A heater is configured to heat an object to be heated in such a manner that at least one of the object to be heated and the heater is swept with the heater disposed opposite the object to be heated. The heater includes a base having a rectangular shape and a plurality of heating cells each independently receiving power supply, the heating cells being disposed on the base and arranged in a longitudinal direction of the base. Each of the heating cells includes a plurality of lateral wires extending in substantially parallel with the longitudinal direction of the base and a plurality of oblique wires tilted relative to the lateral wires.

A heater includes a substrate, a first heating element and a second heating element disposed on a first surface of the substrate, a temperature detection element, and a conductor. The temperature detection element is disposed on a second surface of the substrate opposite the first surface of the substrate. The conductor is disposed on the second surface and connected to the temperature detection element. The first heating element has a first distance from the temperature detection element in a lateral direction of the substrate orthogonal to a longitudinal direction of the substrate, and the second heating element has a second distance that is greater than the first distance from the temperature detection element in the lateral direction. As viewed in a thickness direction of the substrate orthogonal to the lateral direction and the longitudinal direction of the substrate, the conductor overlaps the first heating element and the second heating element.

In a method and a device for laying busbars (5, 31, 33) in films, in which a bundle of heating wires (32) and at least two busbars (5, 31, 33), each electrically contacting at least one subset of the heating wires (32), are applied to at least one base film (3, 14-17, 21-24, 30), wherein the busbars (5, 31, 33) are each guided by means of a guide unit (35) in the direction of a pressure roller (1) and are pressed by means of the pressure roller (1) in the direction of the base film (3, 14-17, 21-24, 30) and are cut by means of a cutting device (8), it is proposed that the busbars (5, 31, 33) are each cut before the pressure roller (1) in the supply direction.

In an image heating device having a plurality of heating blocks which are controllable independently in a longitudinal direction of a heater, an increase of the size of the heater can be suppressed, and temperatures of a plurality of heating block can be detected. The heater has a first temperature sensor corresponding to a first heating block, a second temperature sensor corresponding to a second heating block, a first electric conductor electrically coupled to the first temperature sensor, a second electric conductor electrically coupled to the second temperature sensor, and a common electric conductor electrically coupled to the first and second temperature sensors.

A support member for a heater includes a main body extending longitudinally between a pair of end portions and a pair of first contact portions. Each first contact portion is coupled to one of the end portions of the main body. A gap is formed between each first contact portion and the main body. The support member is configured such that, when the heater is coupled to the support member (a) the gaps each receive the heater, (b) the first contact portions each engage a first surface side of the heater, and (c) the main body engages a second surface side of the heater opposite the first surface side.