摘要 |
1503047 Electrophotography INTERNATIONAL BUSINESS MACHINES CORP 2 Sept 1976 [3 Nov 1975] 36283/76 Heading B6C In a dual mode electrophotographic copier/ printer of the kind in which a charged photoconductor is exposed either to a light image of an original or to a raster scanning light beam controlled by electrically generated data, the said beam is also utilized to erase the areas of the photoconductor bordering a selected latent image area in the copying mode and all areas other than the data defined latent image area in the printing mode. |