| 摘要 |
Apparatus for moving sheet material, primarily microfiche, into a plurality of X and Y axis positions by means of a gas cushion formed on a plate in which the sheet material is shifted by means of ducted gas jets or sweeps; location of the sheet material is achieved by means of movable stops, sweeps or sensors; the stops are controlled by electromagnets or pneumatic means; a feed device is provided in one example to feed the sheet material onto the gas cushion and to enable removal of the sheet material from the apparatus. |
