Patent GB-1416744-A (GB)
Title: Tape magazine
IPC: G11B23/107
Filed: 1972-11-28
Abstract: 1416744 Tape magazine MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 28 Nov 1972 [1 Dec 1971 (5) 21 Dec 1971 14 Jan 1972] 28679/74 Divided out of 1416743 Heading B8M  A tape magazine comprises a tape-like recording medium 10, a leader tape 11 substantially wider than the recording medium connected to one end thereof, a tape reel 12 for winding the recording medium and the leader tape, the tape reel having a hub 18 and substantially circular upper and lower flanges 13, 14 fixed to opposite ends of the hub in substantially parallel opposed relationship, the upper and lower flanges having central portions surrounding the hub and defining an annular recording medium space of a width larger than the recording medium but smaller than the leader tape, and peripheral edge portions defining an annular leader tape receiving space of width at least substantially equal to the width of the leader tape, and at least one of the flanges is formed with a plurality of pairs of slits 57, 57<SP>1</SP>; 58, 581 extending substantially radially inwardly from the peripheral edge and spaced from each other to form between each pair of slits and integrally with the flange a leader tape holding strip 15 which is provided at its outer free end with a claw projecting toward the opposite flange for holding the leader tape in the leader tape receiving space, the hub having therein a hollow in which is provided a hollow boss 19 for engaging a reel shaft exteriorly driving the reel, the boss 19 being concentric with the hub 18; the magazine also including a case defining a space 5 for storing the tape reel and having a tape path opening 7 for passing the leader tape and recording medium into and out of the case, a drive opening 34 for connecting the reel to a drive source, a projection 20 on the inner surface of the ease wall opposite the drive opening 34 for loosely receiving the hollow boss 19 for centering the reel in the case, means, e.g. lug 38 in the case for disengaging the leader tape from the holding strips 15 and guiding it towards the opening 7 when the reel is rotated in the unwinding direction, a leader tape pusher means 8 in the case for forcing the leader tape into the receiving space of the reel when the reel is rotated to rewind the tape, and relievable brake means 9 in the case to prevent the reel from undesirably rotating in the tape unwinding direction. The brake means 9 is biased to engage the periphery of at least one flange and is released by a pin passing through opening 28<SP>1</SP> to pivot the brake means 9 out of said engagement. The brake means is also provided with a lug preventing the forward end of the leader tape from riding into the engaging part of the brake. The case is composed of two parts 2, 3 connected on a plane parallel with the reel flanges, and is provided with apertures 52, 53 preventing wrongful positioning of the magazine in a recording and reproducing apparatus. Means are provided within the casing to prevent the reel being inverted therein. The leader tape is of a width greater than that of the recording medium and is preferably provided with a projection of the same width as the recording medium the recording medium being arranged to overlie the projection and be received thereto by bonding tapes. In an alternative form, the projection is of the same width as the recording medium at its base but tapers to a narrower width at its free end.