| 摘要 |
PURPOSE:To make send-out timing of a picture signal accurate by applying approximately uniform motion to a running body running on an original face in interlocking with a constant speed device generating a load proportional to the moving speed. CONSTITUTION:When the running body 1 is moved in the sub scanning direction 4 to the original face 10, a guide roller 2 is turned, a worm wheel 12 of a constant speed turning mechanism 3 is turned to increase the speed of the worm 13. Then the torque is delivered to a damper 14. The damper 14 increase the turning load nearly proportional to the increase in the turning speed by utilizing air or oil viscosity or friction to make the turning speed of the guide roller 2 constant. As a result, the moving speed of the running body 1 is brought approximately into uniform motion. |
