A media processing device comprising: recording means (46, 48) for recording on a recording medium which is conveyed through a conveyance path; a recording media entrance from which the recording medium is to be inserted; a recording media exit from which the recording medium is to be discharged; a pair of first conveyance rollers for conveying the recording medium inserted from the recording media entrance; a pair of second conveyance rollers for discharging the recording medium from the recording media exit; a first recording medium detector that is disposed to the conveyance path on the downstream side of the first conveyance rollers, and is configured to detect insertion of the recording medium from the recording media entrance; a second recording medium detector that is disposed to the conveyance path on the upstream side of the second conveyance rollers, and is configured to detect if the recording medium is present; and a third recording medium detector that is disposed on the downstream side of the recording media exit adjacent to a line extending from the conveyance path, and is configured to detect discharge of the recording medium from the recording media exit; characterized by further comprising decision means for determining that the recording medium was removed from the conveyance path when a state in which at least one of the first recording medium detector, the second recording medium detector, and third recording medium detector detects the recording medium changes to a state in which all of the first to third recording medium detectors (43, 47, 49) do not detect the recording medium. recording means (46, 48) for recording on a recording medium which is conveyed through a conveyance path; a recording media entrance from which the recording medium is to be inserted; a recording media exit from which the recording medium is to be discharged; a pair of first conveyance rollers for conveying the recording medium inserted from the recording media entrance; a pair of second conveyance rollers for discharging the recording medium from the recording media exit; a first recording medium detector that is disposed to the conveyance path on the downstream side of the first conveyance rollers, and is configured to detect insertion of the recording medium from the recording media entrance; a second recording medium detector that is disposed to the conveyance path on the upstream side of the second conveyance rollers, and is configured to detect if the recording medium is present; and a third recording medium detector that is disposed on the downstream side of the recording media exit adjacent to a line extending from the conveyance path, and is configured to detect discharge of the recording medium from the recording media exit; characterized by further comprising decision means for determining that the recording medium was removed from the conveyance path when a state in which at least one of the first recording medium detector, the second recording medium detector, and third recording medium detector detects the recording medium changes to a state in which all of the first to third recording medium detectors (43, 47, 49) do not detect the recording medium.