摘要:
A magnetic tape loading apparatus has a rotatable cylindrical drum, tape guides, tape pulling movable members and guide members. The guide members guide the tape guide and control a posture of the tape guide by changing the position and the inclination.
摘要:
A rotary magnetic head apparatus for use in a VTR and producing a low level of vibration by restraining the unbalance of an overall rotary body of the magnetic head apparatus. The apparatus includes a fixed cylinder for supporting a rotary shaft via bearings, a rotary cylinder secured to one end of the rotary shaft and having magnetic heads, and a motor rotor directly coupled with the other end of the rotary shaft. At least one first balancer and at least one second balancer are respectively provided in the rotary cylinder and the rotor so as to compensate for the unbalance of the rotary body composed of the rotary cylinder, the rotary shaft, and the rotor.
摘要:
An apparatus for recording and/or reproducing video signals on a magnetic tape wherein a capstan and driving motor are coupled by a belt for driving the tape. The motor is connected to a power supply circuit through a switching circuit and voltage is applied from the switching circuit to the motor for driving the belt and therewith the tape. The motor driving voltage application time is controlled to be substantially equal to an integer multiple of the reciprocal of the resonance frequency of the belt driving system.
摘要:
A guide roller of a tape traveling system of a video tape recorder and the like for changing the direction of travel of a magnetic tape and regulating the heightwise position of the tape during its travel including a roller body of a diameter not constant but smoothly varying axially thereof for exerting on the traveling tape a force tending to shift the tape axially. The guide roller has a flange at the top and the bottom of the roller body having a tape guide surface for contacting the edge of the tape which is not perpendicular to the axis of the roller body but convex as viewed from the respective end of the roller body, to prevent the edge of the tape from striking the edges of the flanges. The roller body may be conical at its outer peripheral surface and at the tape guide surface of each flange.