ROTARY DRUM DEVICE

PURPOSE:To secure the touch of a head at the outlet side of a tape by providing an air blow-off port at a position near the point where the tape taken up by a fixed drum moves away. CONSTITUTION:An air blow-off port 6 is formed on a circumferential surface of a fixed drum 2 toward the inlet side of a magnetic tape T from a point where the tape T moves away in a range of 7 - 10 deg.. That is, the upper end part of the drum 2 is cut as the port 6 at a position right under a magnetic head 4 of a rotary drum 3. As a result, the air blows off through the port 6 when the drum 3 revolves and the tape T has a satisfactory contact with the head 4 owing to the air blow-off pressure. Thus it is possible to secure a satisfactory contact of the head 4 at the outlet side of the tape T without changing the projecting extent of the head 4 nor the tape path.