A magnetic recording and reproducing apparatus comprises a drive mechanism for running an endless magnetic tape of less than 300 m at a higher speed than 5 meters per second; a restricting member interlocking with the roll of said rapidly moving endless magnetic tape wound on a reel to apply a force against a centrifugal force generated on the tape roll so as to prevent it from being shaken unnecessarily; and a stationary magnetic head so arranged that the head is stational in a tape running direction and intermittently movable in a tape width direction to record frequency-modulated video signals in, and reproducing said signals from, the magnetic tape.
A method and apparatus is disclosed for eliminating the effect of unevenly wound magnetic tape media on the guidance of the media relative to a tape transport read/write head. A first guide is used to axially twist the tape or other media 90 degrees relative to the longitudinal axis of the media being unwound from a tape spool. Another guide is then used to twist the media into to an alignment which is co-planar with a surface of the tape transport read/write head. This procedure eliminates the effect of staggerwrap from the tape spool and allows the spooled media to be more precisely aligned with respect to a desired media path of travel.
A guide mechanism and method for positioning a tape media in a transverse position at a transducer. A first surface guide disposed to one side of the transducer engages the tape media surface to orient the tape media surface non-planar with respect to the transverse position. A second surface guide disposed between the first surface guide and transducer engages the tape media surface to orient the tape media surface parallel to the transverse position. An edge guide disposed adjacent to the transducer engages the edge of the tape media positioning the tape media at a predetermined transverse position. A third and fourth surface guides and a second edge guide may be provided on the opposite side of the transducer to permit positioning of the tape media having bidirectional movement.
The magnetic recording apparatus according to the present invention is arranged such that its magnetic head is discretely shifted a pluarlity of times during one revolution of its magnetic tape so that continuous recording or reproduction is performed on a spiral track when the magnetic tape is viewed broadly and it includes a detector portion for detecting a mark every revolution of the magnetic tape so that the start position of a carrier motor is adjusted by the detected signal, and thereby it is achieved to have the tracking accuracy enhanced with an economical structure. Further, the motor for the tape drive portion and the carrier motor are arranged to be independent of each other, so that the angle of rotation of the carrier motor at a time can be increased and the carrier together with the magnetic head can be shifted to a desired track position of a high speed.
An apparatus for reducing distortion during recording in a tape recorder of the type including a recording head which includes an electrically grounded, electrically conductive member in light contact with a coated surface of the recording tape provided adjacent the recording head. With this structure, excess electrons present on the coated surface of the tape after recording are removed.
