Canon iR4570 Series, Service Manual

Page: 808 / 876

Chapter 16
16-48
<DENS>
T-16-33
<DPC>
COPIER > FUNCTION > DENS
Sub-
item
Description Level
WHITE-
ME
Automatically correcting the white level
1
<Operating procedure>
1) Place about 10 or more sheets of standard white paper (the user's usual
paper) on the document table.
2) Select <WHITE-ME> to reverse the display. Then press the OK key.
3) The document lighting lamp scans once and the operation terminates.
PD-
DENS
Outputting a print pattern for automatic density adjustment in Character
mode
Note: Since binarizing is supported by the PD method in Character mode,
execute this mode to adjust the density automatically.
1
<Operating procedure>
1) Select <PD-DENS> to reverse its display. Then press the OK key.
2) Paper is fed from Cassette 2 and a 17-tone print pattern is output. This
print pattern is used by
PD-ME Automatically adjusting the density in Character mode (Reading PD-
DENS output pattern)
1
<Operating procedure>
1) Set the PD-DENS output pattern on the document table by noting the
following:
- Face the print side down.
- Orient the white (light) side of the 17-tone chart toward the vertical size
plate.
- Align the output pattern with the index inside left of the document table.
2) Select <PD-ME> to reverse its display. Then press the OK key.
3) The document lighting lamp is turned ON and OFF for 13 automatic
scans.