公开(公告)号：DE2545721A1

公开(公告)日：1976-06-24

申请号：DE2545721

申请日：1975-10-11

Applicant: IBM

Inventor： PORTER JUN TOWNSEND H ,  SCHOPP ROBERT E

IPC: G11B5/00 ,  G11B15/18 ,  G11B15/22 ,  G11B15/44 ,  G11B25/06

Abstract: 1477762 Feeding record tapes INTERNATIONAL BUSINESS MACHINES CORP 5 Aug 1975 [17 Dec 1974] 32608/75 Heading G5R [Also in Divisions F2 and B8] A tape cassette 30 (Fig. 6) has a tape 126 moved between reels 122, 124 by engagement of a belt 140 with the tape, the belt 140 being driven by a pulley 136 engaged by a driving roller 64. The driving roller 64 is rotated in forward or reverse by pivoting of an arm 56 (Fig. 1) to engage a roller 62 carrying roller 64 with either of a pair of oppositely-driven driving rollers 52, 54. Brake arms act on roller 62 when it is in neutral (Figs. 4 and 5, not shown). The cassette 30 is received in a slot defined by members 24, 26 which have guiding projections 102, 104 which engage slots 152, 154 of the cassette. Projection 102 also pivots a guard 142 to expose the tape 126 to a read/ write head 86. A set of spring-biased rollers engage slots in the case of the cassette to resiliently hold it against roller 64 (32, 34, Fig. 3, not shown). A phototransistor 94 and light source 96 sense when the tape is nearing an end. Two tape cassettes may be operated by a single drive motor 38 (Fig. 9, not shown).

公开(公告)号：DE2536507A1

公开(公告)日：1976-04-01

申请号：DE2536507

申请日：1975-08-16

Applicant: IBM

Inventor： DWIRE JEROLD D ,  PORTER JUN TOWNSEND H

IPC: G11B20/10 ,  H03C3/00 ,  H04L27/12