Abstract: In a magnetic tape recording and playback device which has a rotating drum with magnetic heads, a capstan, and reel blocks, the stator coils of motors for driving them are mounted on a board together with electrical circuits for controlling the motors. The electrical circuits and the stator coils of motors are interconnected by conductor patterns formed on the board.

Abstract: A magnetic tape loading apparatus includes a magnetic tape take-out device slidingly movable on a base and tape take-out device control means of cam type provided on such a base, in order to maintain a predetermined positional relation between the magnetic tape and a rotational cylinder, when the magnetic tape contained within the cassette is taken out helically wound around the rotational cylinder or is stored into the cassette.

Abstract: A middle pole locking device of a camcorder utilizing a loading ring, which includes a locker having upper and lower locking grooves for preventing the fluctuation of a middle pole by supporting top and bottom ends of the middle pole so that the top and the bottom ends of middle pole are respectively locked to the upper and lower locking grooves of the locker at the time of loading operation being finished, whereby the device is simple in construction, small in space occupation, and prevents the middle pole from vibrating so that the travelling tape can be effectively stable.

Abstract: A magnetic recording and reproducing apparatus, such as VTR or DAT, in which a cassette containing a magnetic tape is to be loaded and which is capable of drawing the tape from the cassette and introducing onto a head drum to perform desired recording and reproducing actions. A tape loading mechanism of the apparatus comprises at least one loading disk, a tape drawing member, and a drive system for the drawing member. For minimizing the size of the apparatus, the loading disk is disposed around one of a pair of reel spindles, and the rotation of the loading disk is transmitted to the drawing member via a link. The loading mechanism gives the same driving force also to a tape tensioning device, a reel spindle braking device and a pinch roller driving device.

Abstract: In a tape loading device in which a tape is drawn from a mounted tape cassette and loaded on a tape path which lies in front of the mounted tape cassette, a big capstan which is arranged in front of the mounted tape cassette is inserted into a space formed between the mounted tape cassette and a portion of the tape which has been loaded on the tape path, from a position where the big capstan does not interfere with the tape which is moved to the tape path, so that it is possible to make the diameter and length of the capstan large.

Abstract: A tape loading mechanism for withdrawing a magnetic tape from a tape cassette includes a pair of rails, each formed in a plane, for guiding the movement of a pair of tape guide assemblies, respectively. At least one of the rails is inclined with respect to a cylinder base. The tape guide assembly on the inclined rail is positioned at a lower level than the tape in the cassette when the tape is to be loaded, is brought to the same level as the tape during loading and engages the tape at this level to further withdraw the tape from the cassette.

Abstract: A cassette tape slack-preventing apparatus to prevent magnetic tape from becoming slack when inserted into a video tape recorder in which the capstan motor drives the reel bases as well as the cassette loading machanism. Mode switching cams are used to detect if a front loading mechanism is in operating and keeps the reel bases from rotating through linkages to the cams.

Abstract: A magnetic tape device is disclosed, which includes a magnetic head, a rotating drum on which the magnetic head is mounted, a head assembly on which the rotating drum is mounted, a drum base to which the head assembly is fixed, a pair of tape guide catchers provided on opposite sides of the drum base, and a deck base to which the drum base is fixed. The deck base includes tape guide holes, and tape guides are adapted to be moved along the tape guide holes for drawing out a magnetic tape in a cassette and bringing the magnetic tape into contact with the rotating drum. The catchers catch the tape guides, and are integrally formed with the drum base by outsert molding of resin. Both the drum base and the deck base are formed from sheet metal. The magnetic tape device can be manufactured at a low cost, and no error in positional relationship between the drum base and the deck base occurs due to temperature fluctuations.

Abstract: A magnetic tape back tension device in a magnetic recording-reproduction system having a band brake mechanism for lightly applying a braking force to a supply reel support, the band brake mechanism comprisinga brake release lever rotatably mounted on a chassis,a band brake having one end attached to the brake release lever, reeved around the supply reel support and attached at the other end thereof to a tape tension maintaining mechanism, anda spring for biasing the brake release lever into rotation in a brake applying direction,and further having a control plate slidably provided on the chassis, the control plate comprisinga first contact face movable into contact with the lever biasing spring by the sliding movement of the control plate toward a mode change position to free the brake release lever form the force of the spring, anda second contact face movable into contact with the brake release lever by the sliding movement to rotate the lever in a brake slackening direction.

Abstract: A rotary magnetic head device utilizes a thin film magnetic head or heads having small mutual influence to external magnetic field in combination with a bulk magnetic head or heads to reduce crosstalk between recording head and reproducing head to thereby improve S/N ratio.

Abstract: A recorder/reproducer having two capstans which engage a magnetic tape passing from a delivering coil holder to a receiving coil holder of a cartridge is disclosed. At the time of loading the tape, the capstans are shifted from a rest position along a path toward the scanner which has an upper, rotatable drum. In this working position, the capstans are in close proximity to the scanner which eliminates the great lengths of the tape which generate undesired longitudinal vibrations in the tape.

Abstract: A magnetic recording/reproducing apparatus has a chassis, a rotary cylinder mounted on the chassis, and at least one guide base movably disposed around the rotary cylinder. The guide base is provided with a guide member for drawing out a magnetic tape from a tape cassette. The guide member draws out the magnetic tape from the tape cassette, as the guide base is being moved, and winds the magnetic tape around the rotary cylinder so that a predetermined tape passage is defined. The magnetic recording/reproducing apparatus further has a capstan mechanism for driving the magnetic tape to run the same. The capstan mechanism is arranged on the same side of the chassis on which the rotary cylinder is disposed, and has a capstan downwards extending toward the chassis to come into direct contact with the magnetic tape.

Abstract: A tape loading apparatus for loading a cassette tape with a lid and locking member transversely to said elongated side of said cassette. A holder in said housing receives the cassette, short side first, and holds it as it is pulled in relative to the housing. A slider opening-closing plate is then moved from an out-of-the-way position to a position whereby engaging claws and a projection engage the slider of said cassette and the locking claw of said cassette, thereby releasing said locking claw and sliding back said slider to unlock the cassette lid. The housing is then moved vertically downward to place the cassette in a tape playing position. A cam plate with multiple cam slots cooperates with multiple lever arms to move the holder, slider opneing-closing plate, and housing in the proper sequence and directions.

Abstract: A recording and/or reproducing apparatus for recording and/or reproducing a signal on and/or from a recording medium has a pair of guides disposed along the path of running of the recording medium such that one is located on the leading side while the other is located on the trailing side of a head assembly carrying a recording and/or reproducing head. The guides are simultaneously moved in the same direction so as to adjust the position of the recording medium on the head assembly in the direction of running of the recording medium so as to effect a tracking control thereby permitting the head to trace any winding of the recording track.

Abstract: A threading device for a tape recorder installed in vehicle includes a pair of slide blocks which are provided with guide rollers for drawing a tape from a tape cassette and winding the tape on a cylinder head. One of the slide blocks is abutted against a guide groove, and a tension arm is abutted against the other slide block to thereby prevent the rattling of the slide blocks due to vibration produced during operation of the vehicle.

Abstract: A tape posture control pole controls widthwise inclination of a tape. When the tape cassette containing the tape has been loaded at a predetermined loading position, a tape posture control pole-moving mechanism advances the tape posture control pole into an indentation formed in the tape cassette. When the tape has been pulled out of the tape cassette through the indentation, the tape posture control pole-moving mechanism moves the tape posture control pole close to a guide pin formed within the tape cassette substantially in parallel to the guide pin. Simultaneously, the tape posture control pole-moving mechanism brings the tape posture control pole into contact with the inner side of the tape which is pulled out of the tape cassette through the tape-takeout section. In this fashion, the tape posture control pole-moving mechanism causes the tape posture control pole to control the widthwise inclination of the tape.

Abstract: A selective drive cartridge loading/unloading apparatus connects one motor with multiple driving objects. A worm gear is mounted on the motor shaft in such a manner that it rotates together with the shaft and can move axially along the shaft. The worm gear meshes with different power transmission mechanisms when it is at different points along the shaft.

Abstract: A head drum for a recording and/or reproducing apparatus is provided. The head drum includes a rotary drum, a stationary drum, and a plurality of magnetic heads for recording and/or reproducing signals on a magnetic tape. A chamber is provided which includes a first circumferentially extending recessed portion formed on the rotary drum and a second circumferentially extending recessed portion formed in the stationary drum. A plurality of grooves are formed in a surface of the rotary drum which communicates between the chamber and the exterior of the head drum. In a first embodiment, the second recessed portion is eccentrically arranged to extend closer to a first position on an exterior surface of the head drum where the magnetic tape starts to wrap about the head drum than at a second position on said exterior surface. In an alternative embodiment, the second circular recessed portion has a greater depth from the first circular recessed portion at the first position than at the second position.

Abstract: A tape loading apparatus comprising a cassette including a videotape received in the cassette, with a longitudinal axis of the received tape forming a tape datum plane in the cassette. A helical scanning type magnetic head drum is provided having a cylindrical head drum surface and a lead edge, with the tape being set on the cylindrical head drum surface for scanning. The lead edge maintains the lead angle between the tape and the magnetic head drum and limits the vertical movement of tape on the cylindrical head drum surface. A tape-drum contacting axis is a contacting line at which the longitudinal axis of the tape set along the lead edge contacts with the cylindrical head drum surface after the tape setting operation on the cylindrical head drum surface is completed with both of the longitudinal ends of the tape-drum contacting axis being arranged substantially on a plane parallel to the tape datum plane.

Abstract: A magnetic recording and reproducing apparatus which includes a set of loading members for drawing out a magnetic tape accommodated in a tape cassette and wound around a set of reels disposed to contact the same plane. The tape storing portions of the tape cassette are directed along part of the outer peripheral surface of a rotary head cylinder in an approximately M-shape, and a single inclining member is provided in the vicinity of one tape storing portion for causing a tape travelling reference face of the magnetic tape drawn out from the tape storing portion to be inclined.

Abstract: A cassette loading apparatus used in a recording and reproducing apparatus is provided which includes a cassette holder releasably holding a cassette; side wall members having formed therein first and second guide grooves in which guide pins planted on both side walls of the cassette holder are movably inserted so that the cassette holder is reciprocated between a first position where the cassette can be loaded into and unloaded from the cassette holder and a second position where recording and reproduction can be effected, the second guide grooves extending continuously from one end of the first guide grooves orthogonally thereto; a cassette holder drive unit including a gear and a rotatable arm for moving the cassette holder from the first position to the second position or vice versa; and a supplemental force imparting unit provided on at least one of the side wall members for imparting an urging torque when the guide pins are shifted from the second guide grooves to the first guide grooves, so as to retar

Abstract: A magnetic tape transport apparatus including a rotary drum having a plurality of magnetic heads and spaced-apart tape entry and tape exit points; a tape path forming device including two combinations each having one guide roller and one inclined pole disposed respectively at the tape entry and tape exit points of the drum, from which points the magnetic tape begins to contact with and to leave from the drum, respectively, thereby causing the magnetic tape to partially wrap around the cylindrical surface of the drum through a predetermined angular range and to form a magnetic tape transportation path nearby the drum; and an impedance roller disposed at a position between the guide roller and the inclined pole of at least one of the combinations in contact with the magnetic tape; the impedance roller together with one combination of guide roller and inclined pole being disposed close to one of the tape entry and tape exit points of the drum when the magnetic tape is wrapped around the drum and is transported a

Abstract: An idling rotation mechanism in a housing of a video cassette tape recorder, including a cassette loading device for loading and unloading a cassette in and out of a deck, a tape loading device for moving a video cassette tape inserted in the deck into a position of magnetic transformation, a single motor for driving the cassette loading device and the tape loading device, said motor being able to rotate in clockwise and counterclockwise direction, a loading cam device for preventing the tape loading device from being driven during the operation of the cassette loading device, and an idling rotation device of the housing for preventing the cassette loading means from being driven during the operation of the tape loading device, after the completion of the cassette loading. Both the operation of the cassette holder and the idling rotation may be simultaneously attained according to the present invention.

Abstract: A tape cassette loading system of a magnetic recording and reproducing apparatus comprises a cassette tray adapted for holding a standard size tape cassette and having a depression adapted for holding a compact size tape cassette, a cassette carriage for transporting the cassette tray in a horizontal direction from an unloading position to the inside of the magnetic recording and reproducing apparatus, and an elevating mechanism for moving the cassette tray transported to the inside of the magnetic recording and reproducing apparatus in a downward direction to a loading position where the tape cassette is located ready for loading on a rotary drum assembly of the apparatus. The loading system comprises detecting switches for detecting uncorrect state of the tape cassette on the cassette tray and a controller for inhibiting the continuation of loading procedure when it is detected that the tape cassette is not properly or correctly placed on the cassette tray.

Abstract: In a tape player configured to wind a tape pulled out of a cassette onto a rotary head to play the tape, a tension mechanism includes a mode member to control the position of a tension control member according to a selected tape mode so as to establish relative contact between a tension member and a tape under a constant pressure in a play mode and separate them in a stop mode.

Abstract: A tape loading mechanism of a video tape recorder designed to play a standard size tape cassette and a compact size tape casette comprises a chassis carrying a pair of guide grooves at both sides of a guide drum toward a first area of the chassis on which the standard size tape cassette is held at the time of operation of the video tape recorder. The guide grooves are further extended toward a second area of the chassis defined inside the first area on which the compact size tape cassette is held. A pair of loading members are moved along the guide grooves toward their front ends close to the tape cassette when the compact size tape cassette is loaded so that loading poles in the loading members are accepted in a cutout portion formed at a front side of the compact size tape cassette.

Abstract: A recording-reproduction system wherein a reel chassis provided with a pair of reel supports is slidably mounted on a main chassis having a head cylinder. A power shaft drivingly rotatable by a loading motor is supported on the main chassis rotatably and axially movably and coupled to a mode lever which is restrained from pivotal movement depending on the slidingly moved position of the reel chassis. The rotation of the power shaft reciprocatingly moves the reel chassis. The axial movement of the power shaft pivotally moves the mode lever, whereby a pinch roller is pressed against a capstan.

Abstract: A mechanism for registering the tape contained within a cassette around a hellical-scan head drum mechanism includes means for sensing the presence of the tape cassette in a proper position for beginning the process of engagement of the tape in the cassette with the head assembly in the device. A symmetrical engagement mechanism includes two tape extraction roller blocks which sit at a first disengaged position. A tape extraction roller member for engaging the tape is mounted on each tape extraction roller block. When the presence of the casssette is sensed, the tape extraction roller blocks move along a predetermined path to a second, engaged position wherein the tape is correctly positioned around the head assembly. At a predetermined position along the path, a pair of symmetrically positioned entry-and-exit positioning rollers engage the tape and move it into position for passing it by the tape heads.

Abstract: A tape guide driving device for a rotating head type tape player having a mechanism for moving separately from each other a pinch roller and a tape guide. The rotating head type tape player includes a rotating head device, a capstan, and a tape feeding member that pulls a magnetic tape from an inserted cassette pack and moves it to a position at which it is wound on the rotating head device and to the position of the capstan provided on a chassis. A roller lever is provided that supports the pinch roller and moves the pinch roller from a position opposed to the inside of the tape within a cassette pack to the position close to the capstan, and a guide lever supports the tape guide and moves the tape guide from a position opposed to the inside of the tape within the cassette pack.During operation, the guide lever is pressed by the movement of the roller lever having the pinch roller which causes the tape guide to move.

Abstract: A cassette tape player provided with a rotary head drum including a magnetic head to reproduce or record data from/to a tape including a tape loading mechanism for loading the tape onto the drum, a tape pulling slider operated by the tape loading mechanism for holding the tape against the drum during reproducing or recording operation a link mechanism for moving the tape pulling slider into reproducing or recording position and providing a first force to hold the tape pulling slider there during the reproducing or recording operation and a spring operative to apply a second force to the tape pulling slider to retain the slider in the reproducing or recording position during the reproducing or recording operation.

Abstract: A cassette loading mechanism of a magnetic recording and reproducing apparatus is capable of selectively loading a large-sized cassette and a small-sized cassette. A large-sized cassette insertion opening having a form corresponding to the large-sized cassette (3) is provided in a cassette control unit (K1). The inserted large-sized cassette (3) is supported by a slider (6). This slider (6) is movable between an insertion position (6S) and an operation position (6P). The small-sized cassette (1) is received in a housing (19) outside the cassette control unit (K1) through the large-sized cassette insertion opening and it is set and supported in an adapter chassis (14). The adapter chassis (14) is movable through a slide plate (30) between a retreat position (14S) enabling insertion of the large-sized cassette (3) and a setting position (14G), and between the setting position (14G) and an operation position (14D). The adapter chassis (14) can be attached to the slider (6) in the operation position ( 6P).

Abstract: A helical scanning type of magnetic recording/reproducing apparatus in which a first entrance-side tape height regulation guide is disposed in a level higher than a center of a plane of rotation of magnetic heads mounted on a rotary drum assembly when the magnetic tape is loaded on the rotary drum assembly, and a first exit-side tape height regulation guide is disposed in a level lower than the center of the plane of rotation of the magnetic heads. The rotary drum assembly is disposed in a higher position such that its upper end is in the same level as an upper end of a lid of a tape cassette. The cassette is disposed at a lever lower than that of the first exit-side tape height regulation guide. The first entrance-side and the first exit-side tape height regulation guides are driven by a loading ring inclined towards the cassette so as to move while engaging with the magnetic tape during loading or unloading.

Abstract: A magnetic recording and/or reproducing apparatus is disclosed, comprising a rotary head device, in which a magnetic tape is drawn out of a cassette and brought into contact with the rotary head device or the like. A tape draw-out device doubling as a tape guide forms a predetermined tape path and guides the drive of the magnetic tape after drawing out the magnetic tape. The apparatus further requires a fixed magnetic head and other tape guide mechanism which are movably arranged on the path of the tape draw-out device during the apparatus operation for reducing the size thereof. With the tape loading operation, the fixed magnetic head and the other tape guide are moved by a common drive mechanism and held in position by a common stopper.

Abstract: A mechanism for loading the tape of a standard- or compact-size tape cassette against a rotary head assembly in a compatible recording/reproducing apparatus for selective use with the two types of tape cassettes. The apparatus has a main chassis with a set of fixed positioning pins for positioning the standard-size tape cassette thereon. A floating chassis, much less in size than the main chassis, is mounted thereto for displacement in a direction normal to the principal plane of the main chassis. A pair of tape loader assemblies are mounted to the main chassis for taking the tape out from the standard-size tape cassette positioned on the main chassis, or from the compact-size tape cassette positioned on the floating chassis, and for loading the tape against the rotary head assembly. A common drive cam is coupled to both the floating chassis and the tape loader assemblies via separate drive linkages in order to cause their timed travels.

Abstract: A holder houses a cassette and is arranged to be movable in a horizontal state. A loading mechanism includes a guide for guiding the holder so as to load the cassette from a first position to a second position and to unload the cassette from the second position to the first position, and a driving member for driving the guide in load and unload states. A transmitting mechanism transmits a driving force from a driving source to the driving member. A switch includes a pair of contacts which are turned ON and OFF so as to selectively supply power to the driving source, and first and second actuators for turning ON and OFF the contacts. The second actuator engages with the guide at the second position assumed by the guide so as to turn OFF the contacts. A switching member includes first and second portions which can be freely engaged with the driving member and the first actuator.

Abstract: A tape transport includes a deck, and magnetic tape supply and take-up reels associated with the deck for rotation to transport magnetic tape along a predetermined path therebetween; rotary head structure disposed along the path and associated with the deck, for interaction with the tape; a rotary capstan carried by the deck to engage and advance the tape along its path; there being an air flow channel along the path for channeling air to flow adjacent the tape and from the supply reel to the take-up reel to assist tape travel to the take-up reel. A rotary apparatus rotatably supports and rotates the take-up reel, and is ported to receive and discharge air flow from the channel.

Abstract: A helical scan magnetic tape record/reproduce apparatus includes apparatus for changing the helix angle of magnetic tape relative to a rotary head scanner. A pair of elongate, arcuate air-bearing guides are disposed immediately adjacent and tangential to opposite sides of a circumferential surface of the rotary head scanner. The guides are at a first elevation and first angle and a second elevation and second angle, respectively, to cooperatively guide magnetic tape along a path at a predetermined helix angle while the magnetic tape is partially wrapped around the rotary head scanner. The planes of the air-bearing guides are changed in equal but opposite directions to change the helix angle of the tape relative to the rotary head scanner.

Abstract: An idling rotation mechanism used in a video tape recorder (VTR) to mount and dismount a video cassette tape (VCT) by using only a loading motor. The VCT is mounted and dismounted by moving a holding pin, connected to a VCT holder, along a slot in a support plate. The pin is connected to a idling rotation mechanism that is connected to the loading motor. To prevent the VCT from becoming jammed in the VTR because of excessive rotation of the loading motor, a timing gear in the idling rotation mechanism idles after the pin has been partially moved in the slot.

Abstract: A cassette loading mechanism for a magnetic recording/reproducing device is disclosed, in which two different cassettes can be loaded selectively. Two inserting openings, profiled to conform to a large size cassette and a small size cassette, are provided in a cassette control unit. The large size cassette, when introduced, is held by a slider. This slider is movable between a position of insertion and a position of recording and/or reproduction. The small size cassette inserted into the unit is held by an adapter chassis. This adapter chassis is movable by the medium of the loading chassis, between a position of insertion and a position of recording/reproduction. The adapter chassis may be attached to the slider. A lid is mounted to the unit for rotation for opening or closing the inserting opening for the large size cassette. Locking levers for engaging with the lid are provided at both end edge portions of the lid.

Abstract: An apparatus for detecting a tape-end, according to the present invention, comprising, a tape cassette including a magnetic tape wound on reels received in the tape cassette, and tape-ends arranged between the reels and magnetic tape respectively so that the magnetic tape is connected to the reels through the tape-ends, a magnetic head drum on which the magnetic tape is loaded, a tape loading device which draws out the tape from the tape cassette and which loads the magnetic tape onto a head surface of the magnetic head drum, tape-end detectors for detecting the tape ends on tape paths between the magnetic head drum and the reels, and loading controlling means including a loading phase measuring instrument which measures a phase of the tape loading device during loading operation when at least one of the tape-end detectors detects the tape end, the loading controlling means generating control signals for controlling the loading operation of the tape loading device in accordance with the measured phase, so tha

Abstract: A web, contained in a cassette, is automatically threaded along an external transport path past a web utilization station, by means of a flexible threading band which pushes the web around the path. In a preferred embodiment, magnetic tape, contained in a cassette, is automatically threaded about a tape transport path past a magnetic head assembly by means of a flexible threading band contained in a threading band. The threading band is positioned behind a segment of the magnetic tape and is ejected from its own cassette, (1) to pull the magnetic tape out of the tape cassette, (2) to wrap the tape around a rotary head scanner of a magnetic tape recording/reproducing apparatus, and (3) to configure the tape to the tape transport path. After the tape is threaded, the flexible band is withdrawn into its cassette.

Abstract: A signal recording-reproducing apparatus for use with a cassette includes a reel chassis slidably provided on a main chassis and stoppable at least at three positions, i.e., a standby mode position where the reel chassis is to be loaded with the cassette, a play mode position closer to the cylinder device of the apparatus than the standby mode position, and an empty mode position closer to the cylinder device than the play mode position. In the empty mode, the reel chassis is not loaded with a cassette, and the apparatus has a minimum depthwise length compared to the other modes.

Abstract: An arc cam member has a guide groove formed on its underside along its arced length. On its outer circumference, the cam member is provided with a first cam portion. A second cam portion is formed in the wall of the guide groove of the cam member. The ends of a first arm and a second arm are placed in contact with the first and second cam portions respectively. As the cam member is rotated, the first and second arms move, following the shapes of the first and second cam portions. The motion of the first and second arms is used to operate the recording and reproducing apparatus.

Abstract: A cassette loading device for a VCR which is designed to load and eject a cassette by making common use of the driving force of a capstan motor. The cassette loading or ejecting operation by the driving force of the capstan motor is conducted by a driving force conversion unit comprising an operational plate swingably disposed between the capstan motor and a cassette loading unit, an intermediate gear rotatably mounted at the lower portion of the operational plate and forced with a pulley interconnected to the capstan motor, two idler gears rotatably mounted through intermediary of coil springs, and first and second washers, respectively, and are adapted to selectively mesh with a loading gear of the cassette loading unit according to the rotational direction of the intermediate gear, and a stopper pin selectively inserted into the circular opening or the extended straight opening of the operational plate.

Abstract: A tape loading mechanism in a magnetic recording and/or reproducing apparatus secures a sufficiently accurate positioning of a tape guide during a loading condition and also during an unloading condition with a tape guide arm (58) which is moved in association with the rotation of revolving arms (41) and (42) for moving a pair of guide post members (7) and (8). The movement of the tape guide arm (58) is stopped at a stopper member (60) at a predetermined position through which a length of magnetic tape is moved. A biasing member (54) is provided for pressing the tape guide arm (58) against the stopper member (60), thereby accurately positioning a tape guide (17) mounted on the tape guide arm (58). The mechanism can be used in a digital tape recorder or a video tape recording and/or reproducing apparatus.

Abstract: A magnetic-tape apparatus is disclosed which includes a drive mechanism for driving a magnetic tape and tape reels, a magnetic-head mechanism buffer mechanism comprising a belt (8), guide elements for guiding the belt in an operational position, a tape-threading mechanism which during the thread-out phase threads the tape out of the cassette and wraps it around the magnetic-head mechanism and during the thread-in phase threads the tape into the cassette. A belt-threading mechanism threads the belt between the guide elements into the tape path during said thread-out phase and brings the belt back into its initial position during the thread-in phase. The apparatus (1) also includes a mechanism for moving the belt-threading mechanism in such a way that the belt can be brought into the desired operational position and into said initial position.

Abstract: A graphics display in the form of special effects recording, displayed on a monitor in real time in synchronism with the sensing and internal control signals utilized for the operation of the threading and unthreading as well as cassette loading and unloading in a videotape equipment, displays the course of the tape in all stages in simple graphics which can illustrate any malfunction. In the case of a failure the last normal position of the tape is stored.

Abstract: A magnetic tape apparatus (1) comprises a drive mechanism for driving a magnetic tape (7) and reels (5, 6), a magnetic-head mechanism (9, 10), a buffer mechanism a belt (8) and guide elements (21, 22, 23, 24), which guide the belt (8) in the operational position, which apparatus (1) also comprises a control system for controlling the tape tension, for controlling the position of the belt (8) in the operational phase and for locating a desired part of the tape. The control system comprises a position detection mechanism (38) a tape-tension detection mechanism (44), and a control unit (45) for controlling the reel and tape drive mechanism.

Abstract: A recording and/or reproducing apparatus for a magnetic tape cassette has a back-tension arm pivotably mounted on a mechanical chassis of the apparatus and an actuator mechanism for releasing braking force applied on a pair of tape reel bases by a pair of braking arms while a magnetic tape is run at a high-speed speed. The actuator mechanism includes an axially sliding connector rod engaging with a slider through which said back-tension arm is actuated according to movement of the connector rod, whereby the back-tension arm may apply light friction to the take-up reel base in a reverse running mode in which the magnetic tape is fed from the take-up reel to the supply reel by rotation of a capstan and pinch roller at a relatively slow speed. This causes slack in the magnetic tape to prevent when the tape is started in the reverse running mode.

Abstract: A magnetic recording/reproducing apparatus for recording onto or reproducing from a magnetic tape housed in a cassette by using a rotary magnetic head having a tape withdrawal arrangement for winding a portion of the tape between the two reels in the cassette around the rotary magnetic head by a predetermined angle. A tape drive feed the magnetic tape at a constant speed, with a reel drive being provided for driving either one of the two reels so as to take up the magnetic tape in the reel driven by the reel drive, and with brake arrangement for braking the rotation of the reels. A ring-shaped cam operating member is provided in the outer peripheral surface or the inner peripheral surface thereof with cam surfaces each for effecting the operation of the respective elements in response to the mode of operation of the magnetic recording/reproducing apparatus.