Thermoremanent Duplication of Magnetic Tape Recordings

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Magnetic recordings may be copied from one Crolyn® chromium dioxide tape to another by a simple thermal method. Surface of the copy tape is heated transiently above the Curie point (125 °C) and immediately placed in intimate contact with the master tape. At the shortest wavelength, signal level of the copy is equal to that of the master, which suffers no loss in the copy process. Thermoremanent duplicators for helical-scan videotapes are described. No plans to manufacture the thermoremanent duplicators have been made but development of the machine is continuing to establish the complete validity of copying video recordings on Crolyn tape by the thermal method.
Publication Date: 1971-03-01
DOI: 10.5594/J07708
Link: https://doi.org/10.5594/J07708
Author(s): J. E. Dickens, L. K. Jordan

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J. E. Dickens and L. K. Jordan; Thermoremanent Duplication of Magnetic Tape Recordings, Journal of the SMPTE ( Volume: 80, Issue: 3, March 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J07708

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J. E. Dickens and L. K. Jordan; Thermoremanent Duplication of Magnetic Tape Recordings, Journal of the SMPTE ( Volume: 80, Issue: 3, March 1971); SMPTE, 1971. Available at https://doi.org/10.5594/J07708

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<span class="citation">J. E. Dickens and L. K. Jordan; <cite>Thermoremanent Duplication of Magnetic Tape Recordings</cite>, Journal of the SMPTE ( Volume: 80, Issue: 3, March 1971); SMPTE, 1971. Available at <a href="https://doi.org/10.5594/J07708" target="_blank" rel="noopener">https://doi.org/10.5594/J07708</a></span>

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J. E. Dickens and L. K. Jordan; Thermoremanent Duplication of Magnetic Tape Recordings, Journal of the SMPTE ( Volume: 80, Issue: 3, March 1971); SMPTE, 1971
doi: 10.5594/J07708
url: https://doi.org/10.5594/J07708

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<li>
J. E. Dickens and L. K. Jordan; <cite id="bib-10-5594-j07708">Thermoremanent Duplication of Magnetic Tape Recordings</cite>, Journal of the SMPTE ( Volume: 80, Issue: 3, March 1971); SMPTE, 1971
<span class="doi">10.5594/J07708</span>
</li>