Fixing device

摘要

A fixing device includes a tubular fusing film, a heater, a nip member, a backup member, a backup member, first supporting member, and a second supporting member. The heater may be disposed inside the tubular shape of the fusing film. The nip member may be disposed so as to be in sliding contact with the inner surface of the fusing film and heated by the heater. The backup member may form a nip portion between the backup member and the fusing film with the fusing film between the backup member and the nip member. The first supporting member may be configured to integrally support the heater and the nip member. The second supporting member may be configured to movably support the first supporting member so that the nip member moves relative to the backup member.

主权项

1. A fixing device comprising:
an endless member; a heater extending inside the endless member, the heater being elongated in a longitudinal direction and having an end portion in the longitudinal direction; a nip member extending inside the endless member; a backup member, the backup member and the nip member being configured to nip the endless member therebetween to form a nip portion between the endless member and the backup member, the backup member having an end portion in the longitudinal direction, wherein the backup member and the endless member are configured to convey a sheet in a conveying direction at the nip portion; a reflector configured to reflect radiant heat from the heater, the reflector extending inside the endless member; a stay extending inside the endless member, having an end portion in the longitudinal direction, and supporting the reflector and the nip member; a first supporting member having a supporting portion supporting the end portion of the heater and a holding portion holding the end portion of the stay, the holding portion having:
a first surface; anda second surface spaced apart from the first surface in the sheet conveying direction, the end portion of the stay being disposed between the first surface and the second surface; and a second supporting member supporting the first supporting member, the second supporting member having a groove in which a portion of the backup member is disposed.