| 摘要 |
PURPOSE:To obtain a clear black picture image by obtaining signals of color and black picture in a colored original from an image sensor, exposing a photosensitive body by the signals, and making non-contact reversal developing by color toner. CONSTITUTION:Infrared ray from a colored original 1 is irradiated on an image sensor 7 or a photosensitive body 16. After developing only black image in the colored original of the photosensitive body by a black toner, the photosensitive body is charged again, and color separated visible light from the colored original is irradiated on the image sensor, and signals of color and black image in the colored original are obtained from the image sensor. The photosensitive body is exposed by the signals and non-contact reversal developing is made by color toner. Thereby, the color image and black image in the colored original can be developed separately. Thus, the black image goes to clear instead of being a compound color.
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