JP2020161861A5 - - Google Patents
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- JP2020161861A5 JP2020161861A5 JP2019056055A JP2019056055A JP2020161861A5 JP 2020161861 A5 JP2020161861 A5 JP 2020161861A5 JP 2019056055 A JP2019056055 A JP 2019056055A JP 2019056055 A JP2019056055 A JP 2019056055A JP 2020161861 A5 JP2020161861 A5 JP 2020161861A5
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- basis weight
- control mode
- drive current
- reading
- phase
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- 238000004804 winding Methods 0.000 claims description 8
- 230000032258 transport Effects 0.000 claims 12
- 238000001514 detection method Methods 0.000 claims 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Description
本発明の画像読取装置は、原稿を搬送する搬送ローラと、前記搬送ローラを駆動するモータと、前記搬送ローラによって搬送されている前記原稿の画像を、前記原稿が搬送される搬送方向における読取位置において読み取る読取手段と、前記モータの回転子の回転位相を決定する位相決定手段と、前記回転子の目標位相を表す指令位相と前記位相決定手段によって決定された回転位相との偏差が小さくなるように前記モータの巻線に流れる駆動電流を制御する第１制御モードと、予め決められた大きさの電流に基づいて前記巻線に流れる駆動電流を制御する第２制御モードと、で動作する制御手段と、を有し、前記制御手段は、前記読取手段によって読み取られる前記原稿の坪量が第１の坪量である場合に前記第１制御モードで動作し、前記読取手段によって読み取られる前記原稿の坪量が前記第１の坪量よりも大きい第２の坪量である場合に前記第２制御モードで動作することを特徴とする。 The image reading device of the present invention reads the image of the original document conveyed by the conveying roller, the motor for driving the conveying roller, and the conveying roller in the conveying direction in which the original document is conveyed. The deviation between the reading means to be read in the motor, the phase determining means for determining the rotation phase of the rotor of the motor, the command phase representing the target phase of the rotor, and the rotation phase determined by the phase determining means is reduced. Control that operates in a first control mode that controls the drive current flowing in the winding of the motor and a second control mode that controls the drive current flowing in the winding based on a current of a predetermined magnitude. The control means operates in the first control mode when the basis weight of the document read by the reading means is the first basis weight, and the control means operates in the first control mode, and the document is read by the reading means. It is characterized in that it operates in the second control mode when the basis weight of the second is a second basis weight larger than the first basis weight .
Claims (9)
前記搬送ローラを駆動するモータと、
前記搬送ローラによって搬送されている前記原稿の画像を、前記原稿が搬送される搬送方向における読取位置において読み取る読取手段と、
前記モータの回転子の回転位相を決定する位相決定手段と、
前記回転子の目標位相を表す指令位相と前記位相決定手段によって決定された回転位相との偏差が小さくなるように前記モータの巻線に流れる駆動電流を制御する第１制御モードと、予め決められた大きさの電流に基づいて前記巻線に流れる駆動電流を制御する第２制御モードと、で動作する制御手段と、を有し、
前記制御手段は、前記読取手段によって読み取られる前記原稿の坪量が第１の坪量である場合に前記第１制御モードで動作し、前記読取手段によって読み取られる前記原稿の坪量が前記第１の坪量よりも大きい第２の坪量である場合に前記第２制御モードで動作することを特徴とする、
画像読取装置。 A transport roller that transports documents and
The motor that drives the transfer roller and
A reading means for reading an image of the original document conveyed by the transfer roller at a reading position in the transfer direction in which the original document is conveyed.
A phase determining means for determining the rotational phase of the rotor of the motor,
A first control mode for controlling the drive current flowing through the winding of the motor so that the deviation between the command phase representing the target phase of the rotor and the rotation phase determined by the phase determining means becomes small is predetermined. It has a second control mode that controls a drive current flowing through the winding based on a current of a large amount, and a control means that operates in .
The control means operates in the first control mode when the basis weight of the document read by the reading means is the first basis weight, and the basis weight of the document read by the reading means is the first basis weight. It is characterized in that it operates in the second control mode when the second basis weight is larger than the basis weight of .
Image reader.
前記搬送ローラを駆動するモータと、
前記搬送ローラによって搬送されている原稿の画像を、前記原稿が搬送される搬送方向における読取位置において読み取る読取手段と、
前記モータの回転子の回転位相を決定する位相決定手段と、
前記回転子の目標速度を表す指令速度と前記速度決定手段によって決定された回転速度との偏差が小さくなるように前記モータの巻線に流れる駆動電流を制御する第１制御モードと、予め決められた大きさの電流に基づいて前記巻線に流れる駆動電流を制御する第２制御モードと、で動作する制御手段と、を有し、
前記制御手段は、前記読取手段によって読み取られる前記原稿の坪量が第１の坪量である場合に前記第１制御モードで動作し、前記読取手段によって読み取られる前記原稿の坪量が前記第１の坪量よりも大きい第２の坪量である場合に前記第２制御モードで動作することを特徴とする、
画像読取装置。 A transport roller that transports documents and
The motor that drives the transfer roller and
A reading means for reading an image of a document conveyed by the transfer roller at a reading position in the transfer direction in which the document is conveyed.
A phase determining means for determining the rotational phase of the rotor of the motor,
A first control mode for controlling the drive current flowing through the winding of the motor so that the deviation between the command speed representing the target speed of the rotor and the rotation speed determined by the speed determining means becomes small is predetermined. It has a second control mode that controls a drive current flowing through the winding based on a current of a large amount, and a control means that operates in.
The control means operates in the first control mode when the basis weight of the document read by the reading means is the first basis weight, and the basis weight of the document read by the reading means is the first basis weight. It is characterized in that it operates in the second control mode when the second basis weight is larger than the basis weight of.
Image reader.
請求項１又は２に記載の画像読取装置。 The transport roller is provided upstream of the reading position in the transport direction .
The image reading device according to claim 1 or 2.
前記モータは、前記搬送ローラ及び前記第２搬送ローラを駆動することを特徴とする、
請求項３に記載の画像読取装置。 A second transport roller provided downstream of the reading position in the transport direction is further provided, and the motor is characterized by driving the transport roller and the second transport roller .
The image reading device according to claim 3.
請求項１又は２に記載の画像読取装置。 The transport roller is provided downstream of the reading position in the transport direction .
The image reading device according to claim 1 or 2 .
前記第１制御モードは、前記偏差が小さくなるように設定された前記トルク電流成分の目標値と、前記検出手段によって検出された駆動電流の前記トルク電流成分の値と、の偏差が小さくなるように前記駆動電流を制御する制御モードであることを特徴とする、
請求項１乃至５のいずれか一項に記載の画像読取装置。 Further having a detecting means for detecting the drive current flowing through the winding,
In the first control mode, the deviation between the target value of the torque current component set so that the deviation is small and the value of the torque current component of the drive current detected by the detection means is small. It is characterized in that it is a control mode for controlling the drive current .
The image reading device according to any one of claims 1 to 5.
請求項６に記載の画像読取装置。 The phase determining means determines the rotational phase based on the drive current detected by the detecting means .
The image reading device according to claim 6 .
前記回転子の回転速度を決定する速度決定手段と、をさらに有し、
前記第１制御モードは、前記回転子の目標速度を表す指令速度と前記速度決定手段によって決定された回転速度との偏差が小さくなるように設定された前記トルク電流成分の目標値と、前記検出手段によって検出された駆動電流の前記トルク電流成分の値と、の偏差が小さくなるように前記駆動電流を制御する制御モードであることを特徴とする、
請求項１乃至５のいずれか一項に記載の画像読取装置。 A detection means for detecting the drive current flowing through the winding and
Further, a speed determining means for determining the rotation speed of the rotor is provided.
In the first control mode, the target value of the torque current component set so that the deviation between the command speed representing the target speed of the rotor and the rotation speed determined by the speed determining means becomes small, and the detection. It is a control mode in which the drive current is controlled so that the deviation from the value of the torque current component of the drive current detected by the means is small .
The image reading device according to any one of claims 1 to 5 .
請求項８に記載の画像読取装置。 The speed determining means determines the rotational speed based on the drive current detected by the detecting means .
The image reading device according to claim 8 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019056055A JP7233995B2 (en) | 2019-03-25 | 2019-03-25 | Image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019056055A JP7233995B2 (en) | 2019-03-25 | 2019-03-25 | Image reader |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2020161861A JP2020161861A (en) | 2020-10-01 |
| JP2020161861A5 true JP2020161861A5 (en) | 2022-03-28 |
| JP7233995B2 JP7233995B2 (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2019056055A Active JP7233995B2 (en) | 2019-03-25 | 2019-03-25 | Image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7233995B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5435322B2 (en) | 2008-02-29 | 2014-03-05 | 株式会社リコー | Sheet-like member conveying apparatus and image forming apparatus |
| JP6704868B2 (en) | 2016-05-09 | 2020-06-03 | キヤノン株式会社 | Sheet conveying device, original reading device and image forming apparatus including the sheet conveying device |
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2019
- 2019-03-25 JP JP2019056055A patent/JP7233995B2/en active Active
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