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A System for High-Speed Multiple Duplication of Three-Track 15/16 IPS Magnetic Tape Cartridges

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This paper describes the duplicating center developed for the Library of Congress magnetic talking book program. Operating at sixteen times playback speed, this system can simultaneously reproduce 10 3-track cartridges in any combination of three different books without removal of tape from cartridge. A production speed-up ratio of 300 to 1 is realized. A full description is furnished of the system electronics, automatic controls and performance specifications.

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