MAGNETIC TRANSDUCER HEAD

摘要

A magnetic transducer head (10) comprises a write module (14), with a write chip (18) and write closure (20), and a read module (16), with a read chip (30) and a read closure (28). The chips and closures form write transducing and read transducing gap lines (22) and (32). The head (10) has an operative face (44) which interfaces with a movable magnetic tape (12). Slots (24) and (38) are formed in the leading and trailing faces (26) and (40) of the face (44) and slots (34) are formed in the operative face (44) on the read closure (28). A recess (41) and tube (42) in the read closure (28) provide a passage at the approximate centre of the head (10) leading to a connector tube (50). The passage (50) leads to normally open valve (48) and normally closed valve (46). The other side of valve (48) is open to atmosphere and that of valve (46) to a fluid pressure pump (54).
By operation of the valves (46) and (48), fluid under pressure is introduced to the operative face of a magnetic head to lift the magnetic tape into a tent-like structure (56) out of contact with the transducers on the gap lines when the tape is stationary or about to be stopped. The fluid pressure tents the tape with the pressure such that the tape forms a restricted exhaust with the head at the edges of the tent-like structure. The valves are operated to connect the operative face to atmospheric pressure to permit the tape tension to quickly pull the tape back into operative relation with the transducers by assisting the slots in dissipating the fluid pressure.