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Group 3 fax machine
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The digital Group 3 fax machine, introduced in 1980.
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Group 3 fax machine

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  • Fax machines send and receive information using a telephone line.
    In fax: Standard fax transmission

    …fax machines conform to the Group 3 standard, which was adopted in 1980 in order to ensure the compatibility of digital machines operating through public telephone systems worldwide. As a standard letter-size sheet is fed through a machine, it is scanned repeatedly across its width by a charge-coupled device (CCD),…

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