Image heating apparatus having lubricant between film and nip forming portion and a film-supporting-surface groove having lubricant entrance
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United States of America Patent
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Aug 18, 2015
Grant Date -
Jun 12, 2014
app pub date -
Dec 9, 2013
filing date -
Dec 10, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image heating apparatus includes a cylindrical film; a roller contacting the film; a nip forming member contacting an inner surface of the film and cooperating with the roller to form a nip for nipping a sheet carrying an image; an opposing member opposing an inner surface of an end portion of the film along generatrix direction the film. A lubricant is provided between the film and the nip forming member. The film is longer than the roller. At least a part of the curved surface portion is provided in a region outside a contact region of the film and the roller. A portion of the curved surface portion outside the contact region is provided with a groove extending in a rotational moving direction of the film, the groove having a wall effective to remove from the film the lubricant.
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