| 摘要 |
PURPOSE:To prevent an image from fogging owing to dew condensation on mirror surfaces and a lens surface, and to prevent a defect in paper feed due to dew condensation on paper feed rollers by piping thin flexible pipes through amount devices which are arranged closely and supplying air to only necessary places. CONSTITUTION:When a switch 26 is turned on, a control sequence circuit 28 is started through a power source 27 to generate a control signal for a blower 16 according to a predetermined sequence. A driver 29 powers on the blower 16 according to the signal and the blower 16 begins to operate. The blower 16 sucks intake air from a paper feed part 30 and blows it to surfaces of paper feed rollers 10a and 11a, a lens 8, and mirrors 6, 7, and 9 at an increased speed and increased pressure through an air pipe 17 and branch pipes 18 and 25. Then, there is no difference in room temperature from an installation place at the parts where the air is blown, and there is no factor of dew condensation, so dew condensation on the surfaces of the paper feed rollers 10a and 11a, lens 8, and mirrors 6, 7, and 9. |
