| 摘要 |
PROBLEM TO BE SOLVED: To eliminate concerns regarding an image quality and an apparatus for a user and at the same time to prevent breaking down and damage to the apparatus by reducing puncture in a film, breaking of the film, fixing property, slippage or the like and improving image quality, in an image heating apparatus of a film heating system which heats a recording material carrying an image. SOLUTION: The image heating apparatus uses a heating element 3 with a width Wk which is narrower than a nip width Wn and furthermore, in the relationship of the positions between a nip part ridgeline part T1 on the upstream side of the heating element (recording material introducing side) and a nip part ridge line part C on the upstream side of a film guide Fg supporting the heating element 3, the nip part ridgeline part C on the upstream side in a film guide Fg is projected by a range of 0.1<(projecting amount F)<0.5 mm to the nip side and a gap between an end surface on the heating element upstream side and an end surface on the heating element upstream side of the film guide is made to be in a range of 0<(gap G)<0.5 mm. Moreover, the shape of a protrusion on the upstream side of the film guide Fg is approximately in parallel to a nip surface of the nip. COPYRIGHT: (C)2006,JPO&NCIPI
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