CHAPTER 3 EXPOSURE SYSTEMCOPYRIGHT © 1999 CANON INC. CANON NP6320 REV.0 DEC. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)3-10E. Scanner Movement for Two-Page Separation Mode(copy count 2)Figure 3-304The timing of operations, I, II, and III shown in Figure 3-304 is with reference to the leadingedge of the first page of the document (fall of Q3 signal).I: The distance traveled by the scanner from the leading edge of the original is determined by thereproduction ratio and the copy paper size, just as for a normal copy.II: This is roughly the same as I. If the forward distance traveled by the scanner is greater than 210mm the DC controller will judge that 210 mm is the leading edge of the original. If the distancethat the scanner moves forward is less than 210 mm, the point at which the scanner reverses inI will be the leading edge of the second page of the document.III: Same as I.Scanner home positionsensor signal (Q3)Doc.L.E.(1st page) Doc.L.E.(1st page)Doc.L.E.(1st page)Doc.L.E.(2st page)Doc.L.E.(1st page)Doc.L.E.(2st page)SCRV1SCFW1 SCFW1 SCFW2 SCFW2SCRV1 SCRV2 SCRV2LSTRSTBYINTRSCANNER FORWARDcommand (SCFW)SCANNER REVERSEcommand (SCRV)Scanning lampReverse Reverse Reverse ReverseForward Forward Forward Forward
