Head drum assembly having a rotary head drum and a method for processing a rotary drum

Abstract

A head drum assembly and a method for cutting a rotary drum for the head drum assembly are provided. The head drum assembly includes a stationary drum fixed around a shaft, and a rotary drum rotatably mounted around the shaft. A magnetic head unit is mounted to the rotary drum and has a magnetic head. A head distancing groove is formed on a bottom part of the rotary drum in a circumferential direction of the rotary drum to substantially prevent the magnetic head from contacting the rotary drum. At least one head window is connected with the head distancing groove. The magnetic head protrudes out through the head window. Because the head distancing groove is formed in a circumferential direction of the shaft of the rotary drum, the head distancing groove may be processed by lathing. Thus, the number of processes required to form the rotary drum may be reduced, thereby saving manufacturing costs.

Dependencies are inferred from the claim text.