Korn was applying the terminology and techniques of halftone printing, where a " Rasterbild " was a halftone-screened printing plate . There were more scanning-relevant uses of " Raster " by German authors Eichhorn in 1926 : " die T�nung der Bildelemente bei diesen Rasterbildern " and " Die Bildpunkte des Rasterbildes " ( " the tone of the picture elements of this raster image " and " the picture points of the raster image " ); and Schr�ter in 1932 : " Rasterelementen, " " Rasterzahl, " and " Zellenraster " ( " raster elements, " " raster count, " and " cell raster " ).
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