| 摘要 |
<p>PURPOSE:To move a reel stage to a predetermined position by the movement of a driving plate by providing the driving plate reciprocated linearly by a rack gear, gears having some teeth removed, a pair of reel stage arms and reels. CONSTITUTION:When a small cassette is used, a rack gear 29 and a driving plate 25 are moved right by a pinion 33. Fan-shaped gears 34, 34' are rotated in the counterclockwise direction by rack gears 30, 31, and reel stage arms 21, 21' are pressed via links 36, 36'. The arms 21, 21' are rotated in the opposite directions to be in touch with stoppers 39, 39' and held at a position fit for the small cassette. When a large cassette is to be used, the driving plate 25 is moved left. The fan-shaped gears 34, 34' are rotated in the clockwise direction by the rack gears 30, 31, and the arms 21, 21' are rotated in the opposite directions via the links 36, 36' into touch with sleeves outfitted with pins 35, 35'. As a result, the arms are kept at a position for the large cassette.</p> |
