Chapter 22-2F-2-2T-2-3Reading from the ADFTo avoid skew feeding, documents loaded on the document tray are retained in the horizontal direction by the slide guide. Then, the documents are fed to the sep-aration roller by the pickup roller, and separated one sheet each using differences in the coefficient of friction among the separation roller, documents, and separationguide.After that, the feeder roller feeds the document onto the reading glass, and the CCD unit reads out image data of the document; then, the delivery roller delivers itto the output tray.The document feed motor drives the various rollers of the ADF.Reading from the platen glassThe CCD unit driven by the flatbed motor reads out image data of a document on the platen glass.2.1.2 Basic Sequence2.1.2.1 Basic Sequence of Operation at Power-on 0008-2930Basic Sequence of Operation at Power-OnF-2-3[1] Document feed motor [3] CCD unit[2] Flatbed motor[3][1][2]STBY SREADYreader motorscanning lampHP sensor:motor forward:motor reverse:HP sensor ON:scanning lamp ONblack shading correction*1 lamp warm-up*2 gain correction*3main/sub scanning read position adjustmentHP HP HP HP
