Image heating apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKouichi Okuda, Yasumasa Ohtsuka, Yohji Tomoyuki, Akira Hayakawa, Manabu Takano, Daizo Fukuzawa, Atsuyoshi Abe
Life of this patent
Estimating the term…
Abstract
An image heating apparatus includes a heater; a film having a side for sliding movement relative to the heater through a lubricant and another surface contactable to a recording material carrying an image; driving member for driving the film in contact therewith; and wherein when the heater is not effecting its heating operation, a friction between the film and the driving member is smaller than a friction between the film and the heater.
Claims35
An image heating apparatus, comprising:
- a heater;
- a film having a first side for sliding movement relative to said heater through a lubricant and a second side contactable to a recording material carrying an image;
- and
- a driving member for driving said film in contact therewith;
- wherein a friction between said film and said driving member is smaller than a friction between said film and said heater when said heater is not in its heating operation and said driving member is contacted to said film without a decrease of pressure.
An image heating apparatus, comprising:
- a heater;
- a film having a first side for sliding movement relative to said heater through a lubricant and a second side contactable to a recording material carrying an image;
- and
- driving member for driving said film in contact therewith;
- wherein said driving member has a low friction layer on a surface contactable to said film, and
- wherein when said heater is not effecting its heating operation, a friction between said film and said driving member is smaller than a friction between said film and said heater.
An image heating apparatus, comprising:
- a heater;
- a film having a first side for sliding movement relative to said heater and a second side contactable to a recording material carrying an image;
- and
- a driving roller for driving said film in contact therewith,
- wherein said driving roller has an elastic layer and a surface resin tube layer.
An image heating apparatus, comprising:
- a heater;
- a film having a first side for sliding movement relative to said heater through a lubricant and a second side contactable to a recording material carrying an image;
- and
- a driving member for driving said film in contact therewith;
- wherein a friction between said film and said driving member is smaller than a friction between said film and said heater when said lubricant has a high viscosity, and a friction between said film and said driving member is larger than a friction between said film and said heater when said lubricant has a low viscosity.
Dependencies are inferred from the claim text.