Fixing device capable of suppressing contact between tubular member and electric components

摘要

A fixing device for thermally fixing a developing agent image to a sheet includes: a flexible tubular member having an inner peripheral surface and circularly moving in a moving direction while the developing agent image is thermally fixed; a heater; a nip member being in sliding contact with the tubular member; a backup member nipping the tubular member in cooperation with the nip member; a stay covering the heater and supporting the nip member; an electric component positioned opposite to the heater with respect to the stay; and a frame supporting the electric component. The frame includes: an isolating portion interposed between the tubular member and the electric component for isolating the electric component from the tubular member; and a guide portion guiding the inner peripheral surface of the tubular member while the flexible tubular member is moving in the moving direction.

主权项

1. A fixing device for thermally fixing a developing agent image to a sheet comprising:
a flexible tubular member having an inner peripheral surface defining an internal space, the flexible tubular member being circularly movable in a moving direction while the developing agent image is thermally fixed; a heater disposed at the internal space; a nip member disposed at the internal space and configured to be in sliding contact with the inner peripheral surface of the flexible tubular member; a backup member configured to nip the flexible tubular member in cooperation with the nip member to provide a nip region; a stay disposed at the internal space to cover the heater and configured to support the nip member; an electric component disposed at the internal space and positioned opposite to the heater with respect to the stay, the electric component comprising a cable connected to the heater; and a frame disposed at the internal space to support the electric component, and comprising:
an isolating portion interposed between the tubular member and the electric component and configured to isolate the electric component from the tubular member; anda guide portion configured to guide the inner peripheral surface of the flexible tubular member while the flexible tubular member is moving in the moving direction.