Dynamic magnetic information storage or retrieval – Record copying
Patent
1996-08-30
1999-07-13
Sniezek, Andrew L.
Dynamic magnetic information storage or retrieval
Record copying
360 17, 360137, G11B 586
Patent
active
059234849
ABSTRACT:
An improved high speed magnetic tape duplicator incorporates superior features from both thermomagnetic and anhysteretic processes to increase productivity in operating economics. Starting with a basic transport configuration of existing thermomagnetic equipment, the heating and cooling facilities are removed along with the non-magnetic transfer drum, and replaced with a magnetizable drum assembly and bias-field head suitable to anhysteretic duplication. Provisions are also added to correct tension errors so as to minimize skew and the transport control electronics are preferably replaced with a personal computer-based controller capable of furnishing additional functional capabilities including production reporting. Optionally, the master-tape loop-bin chamber is also specially modified with electrically ground static-control provisions.
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patent: 3777075 (1973-12-01), Hendershot, III et al.
patent: 4882636 (1989-11-01), Billings et al.
patent: 5450247 (1995-09-01), Schwab
patent: 5475548 (1995-12-01), Rudi et al.
patent: 5543973 (1996-08-01), Moriyama
Hughes David M.
Okajima Masashi
Washino Kinya
Future Productions, Inc.
Sniezek Andrew L.
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