2–8COPYING PROCESSCOPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)II. AUXILIARY PROCESSA. Blank ExposureBlank exposure is executed to remove the drumsurface potential of the non-image area that occursas a result of the difference among copy sizes orwhen making copies in Reduce mode.The light from the pre-exposure lamp is re-flected by the reflecting plate and directed to thephotosensitive drum.The non-image area between sheets of copypaper is created by reflecting the light from the pre-exposure lamp by a separate reflecting plate,exposing the whole area.Figure 2-201Pre-exposure lamp Blank exposurelight pathReflectingplates No. 6 mirrorReflecting platePre-exposurelight pathBlank exposure light path(for area between sheets)Photosensitive drumShutterDownload service manual and resetter printer at http://printer1.blogspot.com
