| 摘要 |
The present invention is concerned with an electrophotographic apparatus for producing high quality, toned, first generation images. The apparatus includes: (a) a transporting device, such as a drum, belt or platen for supporting and transporting an image receiving medium, such as ZnO-coated paper, having a flexible substrate and a photoconductive surface; (b) a charging device, such as a scorotron, disposed adjacent to the transporting device, for applying a uniform charge on the photoconductive surface of the image receiving medium, this charge being substantially less than the saturation charge of the surface; (c) an exposing device, such as an illuminated character mask or a laser scanner, for directing radiation onto the photoconductive surface after charging at the areas where toned images are to appear, thereby to discharge the surface at these areas; and (c) a developing device disposed adjacent to the transporting device, for applying liquid toner to the discharged areas on the photoconductive surface after exposing. The toner particles are triboelectrically charged with the same sign as the photoconductive surface and are thereby repelled from the photoconductive surface except at the areas thereof which have been discharged by exposure to radiation.
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