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US 5,017,969 AGranted
Device having movable belt
AssigneeCanon Kabushiki Kaisha
InventorsTatsuo Mitomi, Yoshihiko Hirose
Life of this patent
Estimating the term…
Abstract
A device having a movable belt for transporting, for example, a recording medium, at least one rotary body around which the belt is wound so as to be supported thereon, and limiting portions or members for limiting the movement of the belt in the axial direction of the rotary body. The device is designed to stabilize the movement of the belt by making the friction between the limiting members smaller than the friction between the belt and the rotary body.
Claims12
A device having a movable belt, comprising:
- said movable belt;
- at least one rotary body around which said belt is wound so as to be supported thereon;
- and
- limiting means for limiting the movement of said belt in the axial direction of said rotary body, wherein said limiting means includes a rib formed on said belt and a groove formed in said rotary body whereby said rib is guided,
- said rotary body having a limiting member in which said groove for guiding said rib is formed, the outside diameter of said limiting member in the direction perpendicular to the axis of said rotary body being smaller than the outside diameter of said rotary body,
- wherein the coefficient of friction of said limiting means at an area where the rib and the groove are in contact with each other in the direction orthogonal to the axial direction of the rotary body is smaller than the coefficient of friction between said belt and said rotary body.
3 more elements
Dependencies are inferred from the claim text.