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

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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