Head drum assembly of magnetic recording and reproducing apparatus

摘要

A head drum assembly for a magnetic recording and reproducing apparatus that records information onto a recording medium or reproduces the recorded information from the recording medium includes a stationary drum mounted to a deck chassis, a shaft fixed to a center portion of the stationary drum, a rotary drum rotatably fixed to the shaft and having a plurality of heads for recording and reproducing the information with respect to the recording medium, and an airflow groove disposed at an uppermost stream in a running direction of the recording medium and proximal where the stationary drum contacts the recording medium. The airflow groove communicates with an inner space of the stationary drum and an outer circumference of the stationary drum that is adjacent to the rotary drum. The air flowing between the stationary drum and the rotary drum during rotation of the rotary drum flows toward the recording medium through the airflow groove.