COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001CHAPTER 2 MAIN CONTROLLER2-10 S2.4 Output Image ProcessingThe output image data to the printer unit is subjected to the following processing:2.4.1 Smoothinga. When Generating Read ImagesIn the case of text or test/photo mode, the input image of 600×600 dpi is converted into1200*×600 dpi by means of smoothing.*Equivalent.In smoothing, image data is compared against a template consisting of several combina-tions of pattern matrixes for replacement of selected pixels.In addition, notch processing is also executed at the same time as a pattern unique to readimage.b. When Generating Printer (PDL) ImagesThe image data is subjected to the type of smoothing best suited to PDL, in which600×600 dpi is converted into 2400*×600 dpi.*Equivalent.2.4.2 Binary-Binary Density Conversion (read image output only)This processing is used as an auxiliary means for adjusting the density of images.
