Recording and reproducing apparatus and recording and...
Rotary drum and magnetic reproducing apparatus or magnetic...
Rotary drum device and magnetic recording/reproducing...
Rotary head assembly
Rotary head drum apparatus and magnetic recording and...
Rotary head drum apparatus capable of positively receiving a...
Rotary head drum apparatus including a rotary drum having a...
Rotary head drum device
Rotary head drum device having hollow portions in bonding...
Rotary magnetic head device and method of producing a rotary...
ROTARY MAGNETIC HEAD MECHANISM WITH THE HEAD HAVING A SMOOTH...
Rotating drum assembly and magnetic recording/reproducing...
Rotation balance control mechanism controlling a rotation...
Rotational balance adjustment mechanism for a rotary head...