Recording medium read device

摘要

Positioning means (5) for positioning a recording medium at a predetermined position on a read mechanism of a device after the recording medium loaded into a loading opening (11) has been transported to the read mechanism or a detector means for detecting that the recording medium has been positioned is provided pivotably about one end thereof inside the device. The positioning means (5) comprises first positioning portion (52) for positioning a recording medium of a smaller diameter and a second positioning portion (53) for positioning a recording medium of a larger diameter. The detector means comprises a first detector member (52a) for contacting with the rim of the recording medium of the smaller diameter and a second detector member (53a) for contacting with the rim of the recording medium of the larger diameter. The device is adapted such that, when the recording medium of the larger diameter is transported, the first positioning portion (52) or the first detector member (52a) is retreated from the transport passage for the recording medium of the larger diameter.