| 摘要 |
1492896 Printing from developed electrostatographic images XEROX CORP 22 May 1975 [16 Sept 1974] 22036/75 Heading B6C In a process of multi-colour printing involving successive development of colour-separated electrostatic images which are then superimposed on a receiving material, the superimposed powder images are fused on a temporary support prior to transfer onto a copy slicer. The invention is particularly applicable to a three-colour electrophotographic machine, Fig. 1 where successive colour-separated latent images are formed on photoconductive surface 12 of drum 10, developed by the appropriate colour unit 28, 30 or 32, and transferred to the surface of electrically-biased roller 34. The surface of roller 34 is treated to have suitable release properties, e.g. with a melamine-formaldehyde and silicone coating, and is associated with a heat fuser 38. The fused multi-colour image is transferred to copy-sheet 42 gripped on roller 58 which is periodically contacted under pressure with roller 34. The invention lessens the amount of power required by the fuser and improves duplexing capability. |
