LIFTING AND LOWERING APPARATUS FOR SUPERPOSING AND MOUNTING SUBSTRATE, LIFTING AND LOWERING APPARATUS FOR BACKUP, SUBSTRATE SUPPORTING UNIT, AND PRINTER

摘要

PROBLEM TO BE SOLVED: To stably lift/lower a table to be lifted/lowered. SOLUTION: This lifting and lowering apparatus 1 for superposing and mounting a substrate positions a substrate table, on which the substrate to be printed is supported, below a metal mask, and lifts/lowers the substrate table from/to that state, so as to superpose and mount the substrate on the undersurface of the metal mask or isolates the substrate from the undersurface. The lifting and lowering apparatus 1 comprises: a base plate which is positioned below the substrate table so as to support it; a bearing device 20 having a rolling element 27 interposed and inserted between inner and outer rings 25 and 21; a ball nut 50 attached to the base plate while being borne by the bearing device 20; and a ball screw shaft 60 fixed to the substrate table in the state of being prevented from rotating with respect to it, and screwed into the ball nut 50. The outer periphery of the ball nut 50 is directly fitted into the inner ring 25 which constitutes the bearing device 20. COPYRIGHT: (C)2009,JPO&INPIT