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Journal Article

Development of an Advanced Fe2 O3 Cassette Tape Coating

Authors: Sischka, Frederic J.

Journal of the Audio Engineering Society · Volume 21 · Issue 10 · pp. 798–808 · December 1973

Abstract

Major considerations in the development of a magnetic tape coating specifically designed for high-performance audio casssette applications are described. The new coating contains stable time-proven gamma ferric oxide (yFe/2 0/2) particles characterized by an improved particle morphology and length -to-width ratios of 10:1 or greater. Th'se particles are held in a binder system formulated to produce an increase of 11% in volume loading over a standrd fine particle oxide coating with squareness ratios approaching 0.9. The high degree of packing density and particle orientation results in audio cassette tapes showing sensitivity improvements of 2 dB at 500 Hz and 4 to 5 dB at 10 Hz compared to the best ferric-oxide cassette tapes previously available.

Details

Publication
Journal of the Audio Engineering Society
Volume
21
Issue
10
Pages
798–808
Publication date
December 6, 1973
Affiliation
Memorex Corporation, Santa Clara, CA (See document for exact affiliation information.)
Type
Journal Article