摘要:
A magnetic tape cassette in which a locking member is slidably biased away from a front opening of the cassette to lock the tape hubs. The locking member has a pair of side arms interlocked with a front panel of the cassette so that, when the panel is rotated open, the locking member disengages from the hubs.
摘要:
A magnetic tape cassette of two half cases. A locking member is slidable backwards to lock the hubs holding the tape. The locking member is biased by a spring fixed to a protrusion at the front of one of the half cases. Backward facing legs of the springs slidably engage a lateral recess in the locking member to bias it backwards against the hubs.
摘要:
A method of manufacturing a pad for pressing a magnetic recording tape of a magnetic recording tape cassette against a magnetic head comprises steps of intermittently feeding a metal strip to a plastic injection mold, successively molding pad bodies on the metal strip by injection molding of synthetic resin, cutting the metal strip at the middle points between the pad bodies, and forming mounting portions for mounting the pad on the casing on opposite ends of the metal strip of each pad body-metal strip assembly thus obtained.
摘要:
A plate spring with an attached pad for mechanically biasing a magnetic tape in a tape cassette. The plate spring has a central portion to which the pad is attached, two tapering portions on either side thereof, and two pawls at right angles at the ends of the tapering portions for fixing the spring plate to the cassette. The tapering portions have a apertures structure with all holes in the apertures being smaller than the pawls.
摘要:
A disc cartridge made of two molded plastic shells, joined together. Each of the shells have portions of differing molding shrinkage. In an annular embodiment, the outer annulus has the smaller molding shrinkage. In a planar embodiment, the exterior layer has the smaller molding shrinkage. The differing contractions causes the shells to bend outward, away from the enclosed disc.
摘要:
A magnetic disk cartridge in which a rotatable disk sheet is separated on both sides from the case by liners for cleaning the recording surfaces. A lifter is welded to one inner wall of the case and is cantilevered against the liners and disk sheet to force the liners against the disk sheet.
摘要:
A magnetic recording disk having a rigid substrate disc is provided with an annular air gap defined between inner and outer peripheral bonding rings. A flexible disc sheet having a recording surface is placed over the arrangement and held tight against the peripheral bonding rings while the inner and outer edges of the flexible disc sheet are bonded to the bonding rings. In order to avoid deformation of the recording surface due to thermal expansion of the air trapped in the gap, the substrate is made porous to provide air passages between the air gap and the external atmosphere.
摘要:
A brake mechanism for a tape cassette in which a brake member having two pawls is slidable to engage the pawls with tooth portions of the two tape reels. The brake member and the cassette case have a groove and a matching rib fitted into the groove, both of which extend in the sliding direction, so as to reduce the side play of the sliding brake member.
摘要:
In a magnetic recording disk cartridge, a liner for cleaning the recording surface of the magnetic recording disk is pressed against the recording surface by a lifter under a pressure that increases gradually from the outer edge of the recording surface toward the inner edge of the same.
摘要:
A magnetic disk cartridge containing a floppy magnetic disk is provided with center core which has a groove where the vertical part of the core meets the flange upon which the disk is fastened by a double-sided adhesive ring. This groove can accommodate a portion of the adhesive ring which is positioned out of true. This ensures that such misalignment does not cause deformation of the disk and the deterioration in read/write performance with the disk. The groove also serves to prevent flange flashing from scraping fragments off the inside of the cartridge wall, and the possible harm such fragments cause if they stick to the disk.