Image heating apparatus configured to control belt-member position in width direction thereof

摘要

An image heating apparatus includes: a belt for heating in a nip an image formed on a recording material; a rotatable steering member for stretching the belt and for controlling the position of the belt with respect to a widthwise direction by inclination; a slidable member provided so as to be movable toward and away from a surface of the belt; a contact and separation portion for moving the slidable member toward and away from the belt; an execution portion capable of executing an operation in a sliding mode in which the slidable member contacts the belt and is slid on the surface of the belt; and a controller for controlling a maximum inclination angle of the rotatable steering member during execution of the operation in the sliding mode so that the maximum inclination angle is set at a value smaller than that during image formation.

主权项

1. An image heating apparatus comprising:
a belt member configured to heat in a nip an image formed on a recording material; a rotatable steering member configured to stretch said belt member and to control a position of said belt member with respect to a widthwise direction thereof by inclination of said rotatable steering member; a slidable member provided so as to be movable toward and away from a surface of said belt member; contact-and-separation means for moving said slidable member toward and away from said belt member; a slidable member configured to contact said belt member and to slide on the surface of said belt member in a sliding mode; and control means for controlling the maximum inclination angle of said rotatable steering member during execution of an operation in the sliding mode so that the maximum inclination angle is set at a value smaller than that during image formation.