| 摘要 |
PURPOSE:To simplify constitution, by linking a ratchet with the driving shaft of a power source through a speed change gear and suppressing the rotation of this ratchet by a constant-speed mechanism consisting of a flywheel. CONSTITUTION:When an original and recording paper are set on an infrared-ray transmittable substrate and pressed with a presser lid, an optical system 24 is set at a home position and at the same time, the spiral spring of the power source 19 is wound and locked. When a switch is depressed, the lamp 25 of the optical system 24 turns on and after the light emission of the lamp 25 becomes stable, the switch is further depressed to unlock the power source 19. Once the power source is unlocked, the driving shaft is rotated by the spiral spring of the power source 19, so the constant-speed device operates to make the rotation of the driving shaft constant. Consequently, a guide 21 moves along a guide rail 23 at a constant speed, so the original and recording paper are irradiated uniformly with light from the lamp 25 of the optical system 24, so that a uniform copy picture is obtained. |
