| 摘要 |
<p>PURPOSE:To control the moving amt. of a moving guide post at fixed value by providing a groove cam guiding a guide post in specific direction at the time when a pinch roller arm is rotated. CONSTITUTION:A pinch roller arm 268 is energized in clockwise direction by a spring 285 in the state of its engaging wall part 271 engaging with the engaging wall part 204 of a moving block 190, rotated in clockwise direction by following up the moving of the block 190 and moves a pinch roller 273 in a capstan 170 direction. When the arm 268 is rotated, a moving guide post 275 is moved to the right rear part by being guided by a groove cam 277 with rotating a guide post arm 274 and this post 275 moves a magnetic tape 357 in the capstan 170 direction at the right rear part by preceding to the roller 273. At this time the tape 357 is moved by locating inside the groove 276 of the post 275, the arm 268 stops once at the position apart from the engaging wall part 204 of the block 190 at its engaging wall part 271 and a pin 280 is abutted to a guide wall 221.</p> |
