| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a glass board holder that can prevent warpage of a glass board by a pressing pin and keep the glass board in a high flatness. <P>SOLUTION: The glass board holder is provided with a holding frame (1) for holding the glass board (8) wherein an opening (1a) for transparent illumination slightly smaller than the glass board (8) is formed, a reference positioning member (2) that is provided on two sides adjacent to the holding frame (1) to determine a reference position of the glass board (8), a suction member (6a) that is arranged in a periphery of an opening of the holding frame (1) and sucks/holds four sides of the glass board (8), a pressing means (3) that presses the glass board (8) onto the positioning member (2) for positioning, and a force generation mechanism (7) that gives a tension force to the glass board (8) by the suction member (6a) at least in an opposite direction to the pressing direction of the pressing means (3) in a state where the glass board (8) is pressed down to the positioning member (2). <P>COPYRIGHT: (C)2004,JPO</p> |
