Various arrangements are presented for recording broadcast television programming. The lifting and lowering device lifts the sheet stack to a lift position at which the uppermost sheet contacts with the attraction separation device, and the attraction separation device stands by for a predetermined time to attract the uppermost sheet and starts to convey the uppermost sheet after the predetermined time elapses in a state in which the sheet stack remains at the lift position. First and second slide members 21 and 26, holding compression springs 33 therebetween, are mounted within the outer housing 11 so as to slide in a fitting direction. Time-of-flight measurements of pulses passing through the two phase fluid are made.