A belt device includes an endless belt, a plurality of support rotators configured to support the endless belt, and a support configured to support shaft portions of the plurality of support rotators. The support has an attaching and detaching path through which the shaft portions of the plurality of support rotators pass in a direction orthogonal to an axial direction of at least one of the plurality of support rotators when the shaft portions of the plurality of support rotators are detached from the support.

A fuser has a heater, a heat roller, an endless belt, a pressure pad, and a slidable sheet. The pressure pad forms a nipping portion to nip the endless belt between the pressure pad and the heat roller. The slidable sheet is interposed between an inner circumferential surface of the endless belt and the pressure pad in the nipping portion. The slidable sheet includes a plurality of dents and a plurality of projections on a surface contacting the inner circumferential surface of the endless belt. The plurality of dents are arranged in a first part of the surface of the slidable sheet. The first part is located in a range corresponding to the nipping portion. The plurality of projections are arranged in a second part of the surface of the slidable sheet. The second part is located in a range corresponding to a portion different from the nipping portion.

An image processing apparatus includes a fixing unit including a heater and a fixing belt. The fixing belt is electrically connected between a first power source and a ground terminal. A controller is configured to control the heater to heat the fixing belt. The controller is further configured to determine whether a current is flowing through the fixing belt and, upon determining that a current is not flowing through the fixing belt, control the heater not to heat the fixing belt.

A plurality of electric conductors provided on a substrate of a heater of an image heating device has a conductor group A including a plurality of first electric conductors and a conductor group B including a plurality of second electric conductors. The plurality of first electric conductors each have a first portion having a width W1 and a second portion having a width W2 smaller than the width W1, are provided on the substrate to be arranged side by side in a width direction. The plurality of second electric conductors each have a width W3 larger than the width W2, are provided on the substrate to be arranged side by side in a width direction so as to partially overlap the second portion.

An image processing apparatus includes a fixing unit including a heater and a fixing belt. The fixing belt is electrically connected between a first power source and a ground terminal. A controller is configured to control the heater to heat the fixing belt. The controller is further configured to determine whether a current is flowing through the fixing belt and, upon determining that a current is not flowing through the fixing belt, control the heater not to heat the fixing belt.

An image fixing device includes a rotatable fixing belt, a pressing roller, a nip forming member, a heating roller, a cooling fan, a temperature sensor, and a controller. The nip forming member contacts an inner surface of the fixing belt to sandwich the fixing belt between the pressing roller to form a nip. The heating roller stretches the fixing belt. The cooling fan cools the fixing belt and is opposite to the belt at a position downstream of the heating roller and upstream of the nip forming member in the rotational movement direction of the fixing belt. The temperature sensor detects a temperature of the fixing belt and is provided at a position downstream of the cooling fan and upstream of the nip. The controller controls the power supplied to the heater on the basis of an output of the temperature sensor.

A fixing device is provided that includes a rotatable endless fixing member; a heat source for heating the fixing member; a pressure member that forms a nip with the fixing member; and a nip forming portion that faces the pressure member inside the fixing member and forms the nip; wherein the nip forming portion has a base material and a heat equalizing member, the heat equalizing member has a flat portion between the base material and the pressure member and a bent portion that begins to bend away from the pressure member at an upstream side edge of the base material with respect to a conveyance direction of a recording medium that is configured to be conveyed between the pressure member and the fixing member, and then the bent portion further bends to at least partially hook over a convex part of the base material that is formed at the upstream side of the base material such that an end portion of the bent portion is farther downstream with respect to the conveyance direction of a recording medium than the upstream side edge of the base material.

According to one embodiment, a heating device includes a cylindrical body, a heater unit, a support member, a first heat transfer unit, and a second heat transfer unit. The cylindrical body has a film shape. The heater unit is disposed inside the cylindrical body. In the heater unit, the axial direction of the cylindrical body is taken as a longitudinal direction. The support member supports the heater unit. The first heat transfer unit is disposed between the inner surface of the cylindrical body and the heater unit. The first heat transfer unit abuts on a first surface of the heater unit. The second heat transfer unit is disposed between the heater unit and the support member. The second heat transfer unit abuts on a second surface of the heater unit opposite to the first surface.

A fixing device includes: a pair of pressure members that nip and apply pressure to a recording material having an unfixed image thereon; multiple pressure mechanisms that transmit a force to at least one of the pair of pressure members to generate the pressure; and multiple elastic members that apply elastic forces to a common portion in each pressure mechanism to generate the pressure.

An image processing apparatus includes a fixing unit including a heater and a fixing belt. The fixing belt is electrically connected between a first power source and a ground terminal. A controller is configured to control the heater to heat the fixing belt. The controller is further configured to determine whether a current is flowing through the fixing belt and, upon determining that a current is not flowing through the fixing belt, control the heater not to heat the fixing belt.