Canon DR-5020 - Manual (Page 58)

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3
HINT
• Make copies of the original Function Sheets and store the originals in a safe, clean
place.
• If you copy Function Sheets, make sure that the copies are the same size as the
originals and crisp and clear, neither too light nor too dark. Copies that are too light or
too dark could cause scanning errors.
• When copying a Function Sheet, copy the Function Sheet on paper of the same
thickness as the document you are scanning. If you make a copy of a Function Sheet
on paper of different thickness, a double feed may be detected (P.63), resulting in a
double feed error.
• If you make a copy of a Function Sheet at a page size other than A4 or LTR, adjust
so that the pattern is 10 mm (0.4 in.) from the top edge of the sheet. Also, make sure
that the pattern is copied at the center along the width of the sheet.
• Handle the function sheets carefully. Make sure that you do not bend, fold, mark, or
stain the sheets in any way. In particular, prevent dirt within 51 mm (2 in.) of the top
edge of the sheet. Marked or stained Function Sheets can cause scanning errors.
• Documents may not be scanned correctly if the density during scanning by Function
Sheets is set too high or too low.
3.2 Document Feeding and scanning