| 摘要 |
A document conveying device includes a conveying path and a feed unit. The feed unit includes a tray including a document positioning surface configured to receive documents thereon, in which the document positioning surface has a hole formed therethrough. The feed unit also includes a separation roller which is rotatably supported by a drive shaft extending in a direction orthogonal to a document conveying direction and is configured to contact an uppermost document of the documents and to separate and convey the uppermost document. The separation roller includes a first end and a second end opposite the first end. Moreover, the feed unit includes a document sensor including a detection portion configured to detect the documents and to selectively move between a first position in which the detection portion projects from the document positioning surface via the hole and a second position in which the detection portion is retracted from the document positioning surface via the hole. In addition, the feed unit includes a casing pivotably mounted on the drive shaft. The casing includes a plate extending adjacent to the first end of the separation roller in the document conveying direction, and the first end of the separation roller and the detection portion are positioned closer to the second end of the separation roller than the plate of the casing.
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