Image forming apparatus with a drive motor to drive a toner conveyance part and overcurrent prevention thereof
AssigneeKYOCERA Document Solutions Inc.
InventorRyo Nakagawa
Life of this patent
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Abstract
An image forming apparatus includes an image forming part, a toner storage part, a toner conveyance part, a drive motor and a control part. The image forming part forms an image on a sheet using a toner. The toner storage part stores the toner replenished to the image forming part. The toner conveyance part conveys the toner. The drive motor generates a drive force by which the toner conveyance part conveys the toner. The control part generates a control signal for controlling the drive motor, based on information showing a rotational speed of the drive motor. The control part executes a determination processing for determining whether a driving of the drive motor is stopped, based on the control signal.
Claims5
An image forming apparatus comprising:
- an image forming part which forms an image on a sheet using a toner;
- a toner storage part which stores the toner replenished to the image forming part;
- a toner conveyance part which conveys the toner;
- a drive motor which generates a drive force by which the toner conveyance part conveys the toner;
- and
- a control part which controls a current value of a current supplied to the drive motor, wherein
- the control part stops the driving of the drive motor when the current value of the drive motor becomes larger than a threshold value lower than a current value at which the drive motor is in an overload state, before a toner loosening period elapses after the driving of the drive motor is started.
Dependencies are inferred from the claim text.