Dual tape transport system with tensioning means

Details Dual tape transport system with tensioning means Dual tape transport system with tensioning means

1978-11-09

1980-04-22

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Tape record

242192, G11B 1526, G11B 1543

Patent

active

041997948

ABSTRACT:
A dual magnetic tape cartridge includes a first reel-to-reel tape wound between two coplaner hubs. A tape loop, extending between the hubs, is guided along a first path and across a tape head access opening. The second tape, in belt form, is guided along a second path and across the tape head access opening at a different level. A drive belt, frictionally engaging first tape peripheries on the hubs, is entrained over portions of a forward drive roller and over portions of two spaced rear idlers. The second tape is entrained over slightly smaller diameter portions of the drive roller and over other portions of the rear idlers to thereby also function as a tensioning belt for the drive belt, causing greater tension in drive belt portions engaging the first tape on the hub acting as the takeup hub than in other belt portions engaging tape on the other hub. Both tapes are mechanically interconnected and are always driven simultaneously since the second tape and drive belt are entrained over common elements and the drive belt drives the first tape. For extended length and recording time the second tape is festooned around a number of other tape guides, additionally, the tapes are mounted so that both are always driven across the tape head access opening in opposite directions. Also described is an associated automatic telephone answering apparatus in which the second, belted tape is the announcement tape and the first reel-to-reel tape is the message tape and in which counter record/playback travel of the tapes is used to reduce cueing time. Corresponding methods for reducing cueing time are described.

REFERENCES:
patent: 2743878 (1956-05-01), Masterson
patent: 3640479 (1972-02-01), Hata

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