| 摘要 |
PURPOSE:To prevent securely the occurrence of the memory phenomenon that the previous picture appears at the time of the next copying due to the occurrence of the excessive carrier at the time of recursive copying by executing the whole surface irradiation again by the light of the same wavelength as or close to the irradiating light at the time of picture exposure after the transfer. CONSTITUTION:At the circumference of a photo sensitive body drum 10, a corona charge 11 to take an equal electrical charge to the prescribed polarity, a picture exposure source 12 to irradiate the picture with a long wave long light like a semiconductor laser, a developing means 13 to invert and develop the electrostatic latent image of the negative, the first eraser 14 to irradiate the light of the same wavelength as or close to the picture exposure source 12, a transfer charger 15 to transfer the developed image to the transfer paper, a separating charger 16 to separate the transfer paper from the photo sensitive body drum, a blade cleaner 17 to remove the residual toner, and the second eraser 18 of the same wavelength as or close to the light emitting wavelength of the picture exposure light source 12 and the first eraser 14 are successively provided. Thus, the occurrence of the memory phenomenon that the previous picture appears at the time of the next copying due to the occurrence of the excessive carrier at the time of recursive copying can be securely prevented. |
