Image reading device and control method for image reading device
AssigneeSeiko Epson Corporation
InventorYuki Minami
Life of this patent
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Abstract
An image reading device includes a DC motor, a roller driven by the DC motor, a reading unit configured to read an image from a document conveyed by the roller, and a control unit configured to control driving of the DC motor. The control unit is configured to detect a power load value of the DC motor. The control unit is configured to determine that the power load value of the DC motor exceeds a first threshold value in a state in which the control unit controls the DC motor to convey the document at a first conveyance velocity, and then, control the DC motor to convey the document at a second conveyance velocity lower than the first conveyance velocity.
Claims12
An image reading device comprising:
- a DC motor;
- a roller driven by the DC motor for subsequent reading by the image reading device of an image of a document conveyed by the roller;
- a control unit configured to control driving of the DC motor, wherein
- the control unit is configured to detect a power load value of the DC motor, and
- the control unit is configured to determine that the power load value of the DC motor exceeds a first power load threshold value in a state in which the control unit controls the DC motor to convey the document at a first conveyance velocity,
- the control unit further configured to respond to the determining that the power load value of the DC motor exceeds a first power load threshold value by controlling the DC motor to convey the document at a second conveyance velocity lower than the first conveyance velocity.
A control method for an image reading device including a DC motor, a roller driven by the DC motor for subsequent reading by the image reading device of an image of a document conveyed by the roller, and a control unit configured to control driving of the DC motor, wherein
- the control unit is configured to determine that a power load value of the DC motor exceeds a first power load threshold value when the control unit controls the DC motor to convey the document at a first conveyance velocity, and
- the control unit further configured to, in response to that determination that a power load value of the DC motor exceeds a first power load threshold value, control the DC motor to convey the document at a second conveyance velocity lower than the first conveyance velocity.
Dependencies are inferred from the claim text.