摘要:
A spool mounting apparatus, particularly suitable for automatic, unbuffered tape transport systems, permits a reduction in the handling of spools during loading sequences.A spool inserted through an opening into a cavity within a housing, is guided into a preliminary position by a detent pin. The opening possesses a spring biassed closure member, which is mechanically linked to a free running disc member within the cavity situated opposite a shaped cylindrical hub over which the spool may locate.Motion of the spring biassed closure member towards a closed position effects displacement of the free running disc member towards the hub, thereby clamping the spool disposed therebetween. Subsequent rotation applied to the hub is therefore transferred to the clamped spool and the free running member.
摘要:
A tape cassette is loaded with respect to a recording and/or reproducing apparatus having a reel driving mechanism including at least one reel driving shaft, where the tape cassette comprises a cassette case, a reel provided within the cassette case, for winding a tape, and a reel displacement limiting mechanism for limiting displacement of the reel. The reel displacement limiting mechanism comprises a first teeth part having crests and valleys, formed on the lower surface of the reel, a second teeth part having crests and valleys, formed on a bottom plate of the cassette case at a position opposing the first teeth part of the reel, an urging mechanism for urging the reel toward the bottom plate of the cassette case so that the first and second teeth parts mesh with each other, and a displacement limiting mechanism for limiting displacement of the reel along a radial direction thereof in a state where the first and second teeth parts are meshed to a quantity smaller than a displacement quantity of the reel along the radial direction thereof in a state where the reel is lifted against the urging force of the urging mechanism and the mesh between the first and second teeth parts is released.
摘要:
A tape transport mechanism includes a supply reel base and a take-up reel base each having a rotary gear and arranged at a given distance apart, a rotatable lever arranged between the reel bases, a rotating gear rotatably supported by the rotatable lever and having its shaft arranged at a position deviated from a line connecting the centers of both reel bases, the rotating gear being slightly meshed with the rotary gear of each reel base under the condition of positioning the rotatable lever at the center of both reel bases, and a drive source for driving the rotating gear in forward and reverse directions.
摘要:
An improved magnetic tape roller guide assembly rotatably mounted between spaced sidewalls of a magnetic tape cassette. The guide includes a central hub having an integral biasing projection formed on an end surface by partially slicing the material comprising the hub. The projection bears against one sidewall to produce a biasing force locating the guide assembly between the sidewalls, thus preventing guide oscillation.
摘要:
In a magnetic tape transport, a pivoting tape tension arm has a shaft mounted in bearings in a housing that is pre-formed to be mountable on the transport in only one indexed relationship of transport and housing, and the orientation of the arm with respect to the housing is secured by means within the housing that is fully indexed during the manufacture and assemby of the arm and housing.
摘要:
Disclosed is a reel driving method for a tape recorder wherein a rotatable idler is caused to engage a desired one of a pair of reel shafts by rocking a rockable support lever to drive the desired reel shaft, the idler being mounted on the support lever so that the rotatory force of a capstan shaft is transmitted to the idler. A pair of such idlers are disposed on both sides of the rocking center of the support lever so that the support lever rocks around the rocking center correspondingly to the rotating direction of the capstan shaft, which can be reversed in rotation, thereby causing one of the pair of idlers to engage the desired reel shaft.
摘要:
A magnetic tape cassette comprises a housing having an open front side and two adjacent reel hubs containing an amount of tape, a span of said tape extending along the front side; at one or at both corner points near the open front side front covers are pivotable between an open position, and a closed position which covers at least partly over the front opening; the span of the magnetic tape which extends along the open front side can be moved between an active position outside the housing and an inactive position in which the tape is disposed between the major walls of the housing. Each front cover is formed with a thrust portion which during the pivotal movement from the open position to the closed position presses against the span of magnetic tape which extends along the front side and thereby moves it from the active position to the inactive position.
摘要:
A container for two rolls of tape-like material, especially a magnetic tape cassette, includes, as braking means, two curved levers which project from the container, are connected together and can be released from outside the container.In a special embodiment according to the invention, the container is a protective holder for two rolls of tape-like material, which holder can be used in a precision cassette housing for operation on a transport apparatus. The braking means provide the greatest possible protection for the rolls of tape-like material and the material itself, which is of importance particularly in the case of thin magnetic tapes.The braking system can in principle be used for all types of magnetic tape and film cassette.
摘要:
A tape fast-forwarding and rewinding apparatus comprising a rotation driving circuit for driving a motor for rotating a take up or supply reel so that the tape travels at a first fast-forwarding or rewinding speed, or travels at a second fast-forwarding or rewinding speed, the latter speed being faster than the former, a detection circuit for detecting the radii of wound tape respectively on the take-up and supply reels, and a memorizing circuit for memorizing the ratio of the radii of the wound tape detected by the detection circuit, while the tape is travelling at the first fast-forwarding or rewinding speed. A controlling circuit serves for controlling the rotation driving circuit so that the tape travels at the second fast-forwarding or rewinding speed after travelling at the first fast-forwarding and rewinding speed, and for controlling the rotation driving circuit so that the speed of the tape changes to the first fast-forwarding or rewinding speed from the second fast-forwarding or rewinding speed when the aforesaid value of the reciprocal of the radii ratio, when the tape is travelling at the second fast-forwarding or rewinding speed, is equal to the value of the ratio memorized in the memorizing circuit.
摘要:
An apparatus suitable for use in removing or reducing a crease or tangle in a magnetic recording tape of a cassette is disclosed, the apparatus comprising: a holder (1) capable of holding a cassette (5); a rotatable shaft (2) rotatably mounted with respect to the holder (1) and having a working region (22) capable of engaging the teeth (54) of a hub (52) of the cassette (5); rotating means (3) capable of rotating the shaft (2); and a guide member (4) provided with a slit (43) through which the tape (58) of the cassette (5) may be advanced upon rotation of the shaft (2) and hub (52). The apparatus is not expensive to produce, is easy to operate, and satisfactorily removes or reduces creases or tangle in a magnetic recording tape.