Fixing apparatus and image forming apparatus including the fixing apparatus

摘要

A fixing apparatus includes a roller, a first unit configured to heat the roller, the first unit including a first tubular film, a heating portion forming member to form a heating portion with the roller, and a first guide member dotted with first protruding portions contacting the inner surface of the first tubular film, and a second unit configured to form a nip portion with the roller, the second unit including a second tubular film, a nip portion forming member to form the nip portion with the roller, and a second guide member dotted with second protruding portions contacting the inner surface of the second tubular film, wherein there is a non-overlapping area between the first protruding portions and the second protruding portions in a generatrix direction of the roller.

主权项

1. A fixing apparatus for fixing a toner image on a recording material while conveying the recoding material bearing the toner image at a nip portion, the fixing apparatus comprising:
a roller; a first unit including a first tubular film contacting the roller and forming a heating portion with the roller, a heater heating the first tubular film, and a first guide member; and a second unit including a second tubular film contacting the roller and forming the nip portion with the roller, and a second guide member, wherein the first guide member includes first protruding portions which contact an inner surface of the first tubular film in a region corresponding to the recording material conveyed at the nip portion in a generatrix direction of the roller, and the second guide member includes second protruding portions which contact an inner surface of the second tubular film in the region, and wherein the apparatus takes first positions in the generatrix direction where the first protruding portions are provided and the second protruding portions are not provided and second positions in the generatrix direction where the first protruding portions are not provided and the second protruding portions are provided.