A magnetic tape cassette in which critical parts subject to wear are coated with a hard coating such as an ultraviolet-cured resin. Among other effects, the generation of rubbed-off powder is reduced, thereby reducing the amount of data drop-out. Also, the case of the cassette is protected from damage.

Magnetic-tape cassette

A single-reel magnetic tape cartridge has a cartridge casing and a single reel around which a magnetic tape is wound and which is contained in the cartridge casing for rotation, in which the magnetic tape is fixed at the leading edge thereof to a leader pin employed for extracting the magnetic tape from the cartridge and the flanges at the upper and lower ends of the leader pin are engaged by the lateral drawing force of a latch spring removably held in the tape cartridge casing. Even for cases in which there is a deviation in the insertion position in which leader pin is inserted by the record and playback apparatus, etc. causing the entry path of the leader pin into the cartridge casing to be off track, etc., it is still possible for the leader pin to be inserted into the cartridge casing. The incline angle, in relation to the insertion direction of the leader pin, at the point at which the flanges of the leader pin are brought into abutment with the guide surface of the latch spring is set within the range of 30°±5°.

Magnetic tape cartridge

A metal plate of a recording tape cartridge is provided with a tapered portion at an outer circumference thereof In a state in which the metal plate is attached at a fixed-side mold plate of a metal mold for molding a reel hub and a lower flange, a gap is formed between the tapered portion and the fixed-side mold plate During molding, molding material flows into the gap Because of this gap, an annular pawl portion is formed at the reel hub, which annular pawl portion integrally joins the metal plate with the reel hub by sandwiching the metal plate via the tapered portion

Recording tape cartridge

A storage cassette suitable for the simultaneous storage of two and more tracked disks is provided with a box-shaped center part having an intermediate bottom part which is respectively terminated at its upper side and under side with a cover in the form of a box-shaped floor part, whereby each floor part is hingeable mounted in a hinge at one side at the center part. The cassette construction enables a disk to be supported and held in the cassette adjacent each floor part and on either side of the intermediate bottom part by virtue of a raised seat and peg arrangement centrally disposed on those parts.

Storage cassette for two or more disk-shaped high memory density information carriers

A disk file device includes a stocker for accommodating a plurality of cartridges each holding a disk. A cartridge displacing mechanism with a cartridge rceiving container passes a cartridge through an opening formed in the casing. A carrier moves a cartridge between the cartridge displacing mechanism and the stocker and between the stocker and a disk. The opening formed in the casing is on the side of the stocker and the cartridge displacing mechanism has an electric motor for turning the cartridge receiving container through 180° when a cartridge is passed through the opening so that the carrier and the cartridge receiving container are prevented from colliding.

Disk file device

The invention relates to a magnetic tape cassette and a tape recorder for use with such a cassette. More specifically, the invention relates to the provision of movable holding means within the cassette, which means -- in a first position -- prevent unwinding of the packs of tape and thus hold the magnetic tape taut and -- in a second position -- release the packs and the magnetic tape for operation in conjunction with guide, scanning and driving means on the recorder. The said holding means are in the form of spring elements which engage teeth in the hubs to prevent the packs from unwinding. In a special embodiment, the holding means are in the form of flat members, one on each side of the packs between the side surfaces thereof and the upper and lower walls of the cassette, individual springs being provided which resiliently support said members relative to the wall of the cassette and permit movement of said members from a first, pack-locking position to a second, pack-releasing position.

Tape recorder and magnetic tape cassette

A container for tape-like material wound into a roll or stored in a cartridge, which container consists of a bottom and a top part, which are pivotable relative to one another for the purpose of opening and closing the container and can, when the container is open, be telescoped with the aid of guides on the container, one of the parts possessing means for accommodating the roll or cartridge.

Container for tape-like material

A positioning device for a magnetic head of a magnetic tape recorder, comprising a head carrier which can be moved transversely of the magnetic tape by means of a threaded spindle and a follower, the head carrier being provided with a signal transducer for controlling the drive motor for the threaded spindle.

Positioning device for a magnetic head of a magnetic tape recorder

A tape cartridge assembly and tape transport apparatus for use therewith, comprising a cartridge housing which is provided internally with holding means for a hub bearing a roll of magnetic tape, the roll of tape being accessible from outside, receiving means for the cartridge housing and the hub being provided on the apparatus, by which means the peripheral surface of the roll of magnetic tape can be brought into contact with a drive member.

Tape cartridge assembly and tape transport apparatus for use therewith

A process and apparatus for the treatment of the recording surface of magnetic recording media using consecutively arranged units for burnishing, cleaning and calendering the web of plastics film provided with a magnetic coating. The process and apparatus of the invention are particularly suitable for the manufacture of magnetic tapes for the recording and playback of video signals.

Klaus Schoettle

Papers

Tape recorder and magnetic tape cassette

Container for tape-like material

Positioning device for a magnetic head of a magnetic tape recorder

Tape cartridge assembly and tape transport apparatus for use therewith

Process and apparatus for the surface treatment of flexible magnetic recording media