Abstract: Provided is an adjustment device that reduces fluctuations in mounting angle of a detector. An adjustment device (10) includes a first member (11), a second member (12), an adjustment member (16), and an elastic member (22). The first member (11) includes a base (13) on which a detector is mountable. The first member (11) is attached to the second member (12) through a first shaft (15) such that the first member is rotatable in a first direction and a second direction. The adjustment member (16) is configured to restrict rotation of the first member (11) in the first direction and define a rotation range of the first member (11). The elastic member (22) urges the first member (11) in the first direction.

Abstract: An image heating apparatus includes a rotatable endless belt; a rotatable member, a plate-like heater, a holding member, a connector, movable in a first direction and a fixing member. The fixing member is mountable to and dismountable from the connector and the holding member by being moved in a second direction different from the first direction. The fixing member is mountable after the connector is mounted to the heater and the holding member, and the connector is dismountable after the fixing member is dismounted from the holding member.

Abstract: An image heating apparatus includes a rotatable endless belt; a rotatable member, a plate-like heater, a holding member, a connector, movable in a first direction and a fixing member. The fixing member is mountable to and dismountable from the connector and the holding member by being moved in a second direction different from the first direction. The fixing member is mountable after the connector is mounted to the heater and the holding member, and the connector is dismountable after the fixing member is dismounted from the holding member.

Abstract: A belt unit includes an endless belt including a metal layer, a nip forming member having a heater that includes a heat generating element, a metal stay that presses the nip forming member toward a rotatable member, and a temperature detecting element. A metal leaf spring urges the temperature detecting element toward the inner peripheral surface of the endless belt, and an insulating supporting member is positioned inside the stay and supports the leaf spring. A cord electrically connects with the temperature detecting element through the leaf spring, and an insulating holder portion includes an interposed portion interposed between an exposed portion of the leaf spring and the stay, so as to provide insulation therebetween, and to hold the supporting member. A creepage distance from the heat generating element to the exposed portion of the leaf spring, through the stay and the interposed portion, is 2.5 mm or more.

Abstract: A belt unit includes an endless belt including a metal layer, a heater including a heat generating element, a nip forming member including the heater, a metal stay, a temperature detecting element, a metal leaf spring, an insulating supporting member positioned inside the stay, a cord, and an insulating holder portion including an interposed portion interposed between an exposed portion of the leaf spring and the stay so as to provide insulation therebetween and for holding the supporting member.

Abstract: An image heating apparatus for use with an image forming apparatus. The image heating apparatus includes a pair of rotatable members configured to form a nip for heating an image on a recording material, a guide member configured to guide the recording material toward the nip, a supporting mechanism configured to rotatably support the guide member about an axis so that the guide member is movable between a first position at which the guide member guides the recording material and a second position at which the guide member blocks at least a portion of a feeding path of the recording material, and a locking mechanism configured to lock the guide member being in the first position. The locking mechanism releases locking with sliding movement of the guiding member in a direction of the axis.

Abstract: An image heating apparatus for use with an image forming apparatus includes a pair of rotatable members configured to form a nip for heating an image on a recording material; a guide member configured to guide the recording material toward the nip; a supporting mechanism configured to rotatably support the guide member about an axis so that the guide member is movable between a first position where the guide member guides the recording material and a second position where the guide member blocks at least a part of a feeding path of the recording material; and a locking mechanism configured to lock the guide member being in the first position. The locking mechanism releases locking with sliding movement of the guiding member in a direction of the axis.