| 摘要 |
PURPOSE:To surely detect the timing of flash light emission without using a shutter mechanism and to prevent mis-shot and failure in emission of a flash light by providing a recording paper detector so as to prevent direct projection of the flash light of a flash lamp thereto. CONSTITUTION:Recording paper 5 is conveyed by a conveyance path 14 and an unfixed toner is adhered as an image on the surface thereof by a transfer device 7; thereafter, the paper is conveyed to the position right under a flash fixing device 1, where the flash light of the flash lamp 15 is projected toward the surface of the paper 5. The recording paper detector 4 in this case is installed in the position within the range nearer the paper feed side than the position right under the device 1 and nearer the paper feed side than a bent part Q. The flash light is, therefore, not directly projected to the detector and since the leak light of the flash light is shielded by the bent part Q, the light intensity thereof is considerably lowered. The direct incident flash light on the detector is thereby eliminated and in addition, the intensity of the leak flash light is weak; therefore, the failure and malfunction (wrong detection of recording paper) of the detector 4 are prevented and the mis-shot and failure in emission of the flash light are eliminated accordingly.
|
