3. OPERATION AND TIMINGCOPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)3-282. Sequence of OperationsThick Paper Mode, A4/LTR, 2 Copies, 4-Color, Direct, Cassette 1Figure 3-127Start key ONSTBY STBYDSRDY CNTR COPY LSTRPotential correctionPre-scanPhotosensitive drum motorTransfer belt motorPick-up motorRegistration roller clutchGrid biasPrimary charging biasScanning lampOriginal scanner motorPeriodDSRDY (scanner ready)CNTR (control rotation)COPY (copy)LSTR (last rotation)From when the Start keyis pressed until pre-scanning ends.From the end of DSRDYuntil paper is drawn forretention.From when paper starts towrap around the transferbelt until all toner hasbeen transferred to thepaper.From the end of COPYuntil the main motor stops.PurposeExecutes scanning for anoriginal and shadingcorrection.Measures and controls thedrum surface potential. Picksup paper.Turns ON/OFF the laseraccording to video signals,and develops and transfersspecific colors.Discharges paper. Stabilizesthe photosensitive drumsensitivity. Removes chargesfrom the transfer belt, andcleans the drum.RemarksTable 3-102• The machine’s scanner becomes ready for operation when the temperature of the fixing roller reaches aspecific value so that the image of the original may be read in response to a press on the Start key. Writingof the image on the surface of the photosensitive drum becomes ready when the image signals have beenstored in memory. (Image formation starts in relation to a registration signal.)Control in relation to signals other than the registration signal is discussed using separate timing charts.
