摘要 |
<p>PURPOSE:To improve a space factor by attaching tape guide blocks to semiring gears so that moving locus of these semiring gears overlap each other. CONSTITUTION:A semiring gear 6 has a front end part 6c placed under and near a position control plate 34a and has a rear end part 6d detained by a guide member 60. A semiring gear 5 has always the outside peripheral part held between a position control plate 33b and a position control plate 33c of a detaining block 33, and the semiring 6 has always the outside peripheral part held between a position control plate 33a and the position control plate 33b of the detaining block 33. Semiring gears 5 and 6 are turned at about 96 deg. clockwise and counterclockwise respectively to move from returning positions, indicated by alternate long and short dash lines to going positions indicated by solid lines to that their moving locus overlap each other.</p> |