| 摘要 |
<p>PROBLEM TO BE SOLVED: To lessen the deflection of a glass board when it is held, the deflection being likely to enlarge due to its lightweight and large-sized construction, by holding each glass board to be accommodated at the two ends and the central supporting part. SOLUTION: A glass board cassette is composed of a board end supporting part 3 to support each end of a glass board 1 accommodated, a plurality of board supporting rods 4 to support the central part of the board 1, and a shutter 5 which makes setting-in and taking-out of glass board 1 and seals the accommodated board(s) inside the cassette.</p> |
