Document conveying device, document reading apparatus, and document conveying method
First Claim
1. A document conveying and reading device, comprising:
- a drive motor;
a paper ejection roller that is driven by the drive motor, and is able to rotate in a first direction when ejecting a document and a second direction opposite to the first direction;
a first reading unit arranged along a document conveying path to face one surface of a document; and
a shading roller arranged along the document conveying path to face the first reading unit, wherein the shading roller includes a white reference member used for shading correction and a conveying guide for a document that is conveyed along the document conveying path, is driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the second direction, and is not driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the first direction.
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Accused Products
Abstract
A document conveying and reading device includes a drive motor, a paper ejection roller driven by the drive motor, a first reading unit arranged along a document conveying path to face one surface of the document, and a shading roller arranged along the document conveying path to face the first reading unit. The shading roller includes a white reference member used for shading correction and a conveying guide for a document that is conveyed along the document conveying path, is driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the second direction, and is not driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the first direction.
24 Citations
16 Claims
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1. A document conveying and reading device, comprising:
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a drive motor; a paper ejection roller that is driven by the drive motor, and is able to rotate in a first direction when ejecting a document and a second direction opposite to the first direction; a first reading unit arranged along a document conveying path to face one surface of a document; and a shading roller arranged along the document conveying path to face the first reading unit, wherein the shading roller includes a white reference member used for shading correction and a conveying guide for a document that is conveyed along the document conveying path, is driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the second direction, and is not driven by the drive motor together with the paper ejection roller when the drive motor drives the paper ejection roller to rotate in the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of performing shading correction in a document conveying and reading device, comprising:
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conveying a document along a document conveying path; reading a first surface of the document and then a second surface of the document; after the reading, rotating a paper ejection roller in a first direction to eject the document; and rotating a shading roller to search for a shading correction position of the shading roller, wherein rotating the shading roller also causes rotation of the paper ejection roller in a second direction that is opposite the first direction. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification