Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1987-07-07
1989-04-25
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
36013031, 36013032, 360128, G11B 1564
Patent
active
048253170
ABSTRACT:
A mechanism for use with a magnetic tape recorder having a tape drive composed of take-up and take-off reels, of buffer chambers allocated thereto, and a single tape capstan arranged between the buffer chambers and next to a write/read head. The tape capstan is reversible in the running direction. The mechanism of the present invention is for damping which opposes local deformations of the magnetic tape in the region of the head mirror of the magnetic head. This mechanism has a damping element in the form of a pneumatically acting jet comb comprising a plurality of nozzles residing under pressurization. These nozzles are arranged along a line proceeding transversely relative to the conveying direction of the magnetic tape and an air jet output by them impinges in the region of the leading ledge for the magnetic tape at the mirror of the magnetic head acting with a slight force component in tape conveying direction. Such a damping mechanism is particularly suited for a magnetic tape recorder means employed as digital storage devices in the upper performance category and having high tape speeds which enables reading both in forward run, as well as, in reverse run.
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Fulton, "Pneumatic Brake/Pressure Pad for Tape Transport", RCA Technical Notes, No. 498, Sep. 1961.
"Elimination of Transverse Tape Vibration in a Magnetic Tape Unit", by Frauenfelder et al., IBM Technical Disclosure Bulletin, vol. 15, No. 8, Jan. 1973.
Bussan Matthew J.
Siemens Aktiengesellschaft
Wolff John H.
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