| 摘要 |
To provide a technology which facilitates an operation for placing a document with a larger size than a size of a document table, on the document table. A document cover is positioned at a plurality of open positions to a document table. A pivot of a document table 2 and a hinge 7 is configured by two pivots A1, A2, and a constricted portion 1b and it is configured in such a manner that, in case of setting a document with a smaller size than that of the document table 2, the pivot A2 is pivoted at a convex portion 7a of the hinge 7, and in case of setting a document with a larger size than that of the document table 2, the convex portion 7a is moved to the pivot Al side through the constricted portion 1b, and the pivot A1 is pivoted at the convex portion 7a.
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