Apparatus for controlling the lateral shifting of an endless belt by detecting belt position
AssigneeCanon Kabushiki Kaisha
InventorsSatoshi Mori, Yoshihiko Suzuki, Shokyo Koh
Life of this patent
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Abstract
A lateral shift control apparatus for an endless belt includes a lateral shifting driver for applying to the endless belt a lateral shifting force in lateral directions; a switching device for switching direction of the lateral shifting force; a detector for detecting a lateral end position of the endless belt; and a controller responsive to an output of the detector to control the switching device. The lateral end portion detected by the detector is provided with an inclined portion.
Claims53
An image heating apparatus comprising:
- a heater;
- an endless belt movable together with a supporting material supporting an image, wherein the image is heated by heat from said heater through the endless belt;
- lateral shifting means for applying a lateral force to said endless belt in a first direction and a second direction which is opposite from the first direction;
- detecting means for detecting the position of the endless belt;
- and
- switching means for switching the direction of the force of said lateral shifting means in accordance with an output of said detecting means,
- wherein said detecting means includes a sensing element, and wherein said switching means effects its switching action in accordance with a sensing time of said sensing element.
A lateral shift control apparatus for an endless belt, comprising:
- lateral shifting means for applying a lateral force to the endless belt in a first direction and a second direction which is opposite from the first direction;
- detecting means for detecting the position of the endless belt;
- and
- switching means for switching the direction of the force of said lateral shifting means in accordance with an output of said detecting means,
- wherein said detecting means includes a sensing element, and wherein said switching means effects its switching action in accordance with a sensing time of said sensing element.
An endless belt driving apparatus comprising:
- an endless belt;
- lateral shifting means for applying to said belt a lateral shifting force;
- detecting means for detecting the position of the endless belt;
- and
- switching means for switching a direction of the force of said lateral shifting means in accordance with an output of said detecting means,
- wherein said endless belt includes an inclined portion which is inclined with respect to a plane normal to a generating line thereof, and wherein said detecting means detects the inclined portion.
An image heating apparatus comprising:
- a heater;
- an endless belt movable together with a supporting material supporting an image, wherein the image is heated by heat from said heater through said endless belt;
- lateral shifting means for applying to said endless belt a lateral shifting force;
- detecting means for detecting the position of the endless belt;
- and
- switching means for switching a direction of the force of said lateral shifting means in accordance with an output of said detecting means,
- wherein said endless belt includes an inclined portion which is inclined with respect to a plane normal to a generating line thereof, and wherein said detecting means detects the inclined portion.
Dependencies are inferred from the claim text.