High precision tape-transport mechanism

Claim 1

IN A CAPSTAN ASSEMBLY FOR OBTAINING A REPRODUCTION FROM A MOVABLE MEDIUM OF SIGNALS PREVIOUSLY RECORDED ON THE MEDIUM WHERE THE OPERATION OF THE CAPSTAN ASSEMBLY IS CONTROLLED BY A SERVOMECHANISM HAVING A BANDWIDTH IN EXCESS OF 100 CYCLES PER SECOND, THE COMBINATION OF: A DRIVING MECHANISM DISPOSED IN CONTGUOUS RELATIONSHIP TO THE MOVABLE MEDIUM TO ENGAGE AND DRIVE THE MOVABLE MEDIUM UPON A DRIVING OF THE DRIVING MECHANISM, THE DRIVING MECHANISM PROVIDED WITH A LIGHT AND RIGID CONSTRUCTION; A MOTOR HAVING A LOW INERTIA AND DIRECTLY COUPLED TO THE DRIVING MECHANISM TO DRIVE THE DRIVING MECHANISM; ROTARY MEANS COUPLED TO THE DRIVING MECHANISM AND TO THE MOVABLE MEDIUM AND DRIVEN BY THE DRIVING MECHANISM TO OBTAIN THE MOVEMENT OF THE MOVABLE MEDIUM IN COOPERATION WITH THE DRIVING MECHANISM; AND SUPPORT MEANS COUPLED TO THE DRIVING MECHANISM TO PREVENT ON A MECHANICAL BASIS ANY MECHANICAL RESONANCES OF THE CAPSTAN ASSEMBLY WITHIN A FREQUENCY RANGE COMPRISING AT LEAST THE BANDWIDTH OF THE SERVO.