| 摘要 |
A media tray lifting mechanism for use with a driving mechanism to present sheet media for processing in a printing machine is provided. The mechanism includes a tray for supporting the sheet media and a cable affixed in at least three spaced apart positions to the tray to form cable connections. The mechanism also includes a plurality of support pulleys affixed to the printing machine and movably attached to the cable for supporting the cable within the machine. At least two of the support pulleys is associated with each of the cable connections to form pulley sets. At least one of the support pulleys within each pulley set subtends another pulley within the pulley set to provide a substantially vertical section of the cable between the pulleys. An adjustment pulley is movably secured to the printing machine and is movably attached to the cable. The adjustment pulley is positioned between adjacent sets of pulley sets.
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