专利名称：MULTICOLOR ELECTROPHOTOGRAPHIC COPYING METHOD
发明人：SAKAI TOSHIO两小儿辩日的翻译
drummond>carton
自学英语软件申请号：JP5397478
申请日：19780506
balmain
公开号：JPS54145535A
公开日：
fo
19791113
四级听力一个多少分专利内容由知识产权出版社提供
solo什么意思摘要：PURPOSE:To copy electrophotographs of multicolors of two or more colors by combining the specific photoreceptor and charging exposure method. CONSTITUTION:A photoreceptor 1 comprising laminating photoconductive layers 11 thru 13 having nsitivities only to red light, green light and blue light respectively as well as a transparent insulation layer 14 on a conductive substrate 10 is primary-charged to negative by a charger 2 under radiation of white light. Next, the photoreceptor 1 is condary-charged to positive by a charger 3 under radiation of light of the color cut off of blue light from the white light. Further, the photoreceptor 1 is teriary-charged again to negative by a charger 4 under radiation of red light. Finally, when the surface of the photoreceptor 1 is destaticized by a destaticizing charger 5 in the dark, then the internal polarizations are formed in the layers 11 thru 13. When the color light images of the original are radiated to the photoreceptor 1 in this state, the electrostatic latent images wherein the surface potentials of the white blank part, red part, black part, green part and blue part are are 0, VR, VB, V-VBR are formed and are developed by the green toner TG of negative polarity, the black toner TB of negative polarity, the toner TR of negative polarity and finaly the blue toner TBR of positive polarity.
英语面试口语900句>珠海联合国际学院申请人：RICOH KK
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