Sheet conveyance apparatus and sheet conveyance method
AssigneesKabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
InventorNobuyuki Kato
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Abstract
In accordance with an embodiment, a sheet conveyance apparatus comprises a roller, an acceleration sensor, and a controller. The roller conveys a sheet. The acceleration sensor is attached to the roller to output a signal indicating a direction of gravitational acceleration applied to the roller at the time the roller rotates. The controller acquires cumulative angle at which the roller rotates based on the signal output by the acceleration sensor. The controller determines whether to replace the roller based on the cumulative angle acquired by the rotation angle acquisition section.
Claims9
A sheet conveyance apparatus, comprising:
- a roller configured to convey a sheet;
- an acceleration sensor, attached to the roller, configured to output a signal indicating a direction of gravitational acceleration applied to the roller at the time the roller rotates;
- and
- a controller configured to:
- acquire cumulative angle at which the roller rotates in a predetermined period based on the signal output by the acceleration sensor in the predetermined period,
- determine whether to replace the roller based on the acquired cumulative angle, wherein
- the controller determines whether or not replacement time of the roller arrives if an angle at which the roller rotates in a period from a moment the sheet passes through a first passing point on a conveyance path to a moment the sheet passes through a second passing point located at the downstream side of the first passing point in a conveyance direction of the sheet exceeds a first threshold value predetermined based on a distance between the first passing point and the second passing point.
A sheet conveyance method, including:
- conveying a sheet by a roller;
- outputting a signal indicating a direction of gravitational acceleration applied to the roller at the time the roller rotates by an acceleration sensor attached to the roller;
- acquiring an angle at which the roller rotates based on the signal output by the acceleration sensor;
- and
- determining whether to replace the roller based on the acquired angle, wherein
- the controller determines whether or not replacement time of the roller arrives if an angle at which the roller rotates in a period from a moment the sheet passes through a first passing point on a conveyance path to a moment the sheet passes through a second passing point located at the downstream side of the first passing point in a conveyance direction of the sheet exceeds a first threshold value predetermined based on a distance between the first passing point and the second passing point.
Dependencies are inferred from the claim text.