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US 11,447,351 B2Granted
Image forming apparatus and image forming method
AssigneeHewlett-Packard Development Company, L.P.
InventorByung Sik An
Life of this patent
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Abstract
An image forming apparatus is provided. The image forming apparatus includes an engine unit to be used for performing an image forming job, a motor to start the engine unit, a driver circuit to sense a current flowing in the motor and supply the motor with a power source, and a processor to determine a load size of the motor based on the sensed current and control a driving speed of the motor based on the determined load size.
Claims18
An image forming apparatus comprising:
- an engine unit to perform an image forming job;
- a motor to drive the engine unit;
- a driver circuit to sense a current flowing in the motor and supply the motor with a power source;
- and
- a processor to:
- determine a load size of the motor based on the sensed current,
- control a driving speed of the motor to have a first speed corresponding to a preset print speed of the engine unit in response to the determined load size being smaller than a preset reference load, and
- control the driving speed of the motor to have a second speed lower than the first speed in response to the determined load size being larger than the preset reference load.
5 more elements
An image forming method comprising:
- driving an engine unit to perform an image forming job, by using a motor;
- sensing a current flowing in the motor;
- determining a load size of the motor based on the sensed current;
- in response to the determined load size being smaller than a preset reference load, controlling a driving speed of the motor to have a first speed corresponding to a preset print speed of the engine unit;
- and
- in response to the determined load size being larger than the preset reference load, controlling the driving speed of the motor to have a second speed lower than the first speed.
3 more elements
Dependencies are inferred from the claim text.