Fixing device

摘要

A fixing device configured to heat-fix a developer image on a recording sheet, the fixing device includes: a flexible cylindrical member; a nip member configured to slidingly contact an inner peripheral surface of the cylindrical member; a heating member that is arranged at an inside of the cylindrical member and is configured to heat the nip member; a stay configured to support the nip member with surrounding the heating member; a backup member configured to interpose the cylindrical member between the nip member and the backup member; a cover member that is arranged at the inside of the cylindrical member and is configured to cover the stay from an opposite side to the heating member; and a first support member configured to support the cover member and form a gap between the stay and the cover member.

主权项

1. A fixing device comprising:
a flexible cylindrical member; a nip member contactable with an inner peripheral surface of the flexible cylindrical member; a heater extending inside the flexible cylindrical member; a stay extending inside the flexible cylindrical member; and a cover member, the cover member comprising:
a surface facing the stay; anda support member protruding from the surface toward the stay, the support member being opposite to the heater relative to a portion of the stay, the support member contacting the portion of the stay to form a gap between the stay and at least a portion of the surface of the cover member, the support member comprising:
a central portion contacting the stay;a first portion contacting the stay, the first portion being spaced apart from the central portion; anda second portion contacting the stay, the second portion being spaced apart from the central portion, the second portion being opposite to the first portion relative to an imaginary plane that passes through the central portion and is perpendicular to an longitudinal direction of the heater.