3–34OPERATIONS AND TIMINGCOPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)D. Operations of the Scanner in Page Separation ModeFigure 3-208I, II, and II in Figure 3-208 use the scanner homeposition signal (falling edge of SCHP) for the 1stpage as the reference for control by the micropro-cessor on the DC controller PCB.The microprocessor determines how much thescanner must travel forward to suit the selectedcassette size.I, II: The distance traveled forward is determinedby the selected reproduction ratio and thecassette size.III: If the forward travel distance during II ofFigure 3-208 is in excess of about 216 mm,216 mm is used to represent the leadingedge of the second page. *Non-AE, page separation mode, A4, 2 copies, continuous.Scanner home positionsignal (PS1)Scanning lamp (LA1)ScannerOriginalleadingedge of1st pageOriginalleadingedge of1st pageOriginalleadingedge of1st pageOriginalleadingedge of2nd pageOriginalleadingedge of1st pageOriginalleadingedge of2nd pageForward ReverseI I II III II IIISCFW1INTRSCFW1SCRVI SCRVISCFW2 SCRV2 SCFW2 SCRV2 LSTR
