1. In a raster input scanner, the combination of: (a) multiple speed scanning means for scanning originals to provide image signals representative of the image on said originals, said scanning means being selectively operable at a first scanning rate for predominantly line images and at a second scanning rate for other images; (b) first image processing means for procesing image signals produced by said scanning means at said first scanning rate to provide a binary level image signal output; (c) second and third image processing means for processing image signals produced by said scanning means at said second scanning rate; said second image processing means being adapted for use when said other images comprise predominantly continuous tone images, said second image processing means providing a binary level image signal output; said third image processing means being adapted for use when said other images comprise halftone and/or continuous tone images, said third image processing means providing a digital signal output representing the gray scale level of the image signals processed; and (d) selector means for selecting one of said scanning means first and second scanning rates, and one of said second and third image processing means when said second scanning rate is selected.