3.Printer-specific Adjustments
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(2) Select [05 ADJUSTMENT MODE]. Change the value for code [2905] to adjust the transfer (1
st
transfer) roller bias output.
(Adjust the offset voltage of the transfer roller bias for C (Cyan) and K (Black) so as to increase the
density of R (Red).)
• The code to use varies depending on the paper type and color to adjust. Adjust the value for the
subcode corresponding to the color for which you would like to improve the image quality. Set the
value within a range of “2” to “5” to obtain the highest density of R (Red).
• Never change the values for subcodes other than the above. Otherwise, it may cause a loss in
MFP performance, including degradation in the image quality.
<Notes>
• The adjustment may possibly decrease the density of G (Green), B (Blue) and K (Black)
extremely. Therefore, carefully perform the adjustment, while checking the printout.
• Unless this adjustment changes the density of R (Red), return the values to the default (setting
value: 5).
• This adjustment may affect not only the printouts but also every type of image quality such as the
copy image. Therefore, perform the adjustment, being aware that the image quality of all future
printouts will be changed, when printing out originals other than the one that is used for the
adjustment.
Caution after the adjustment
Nothing in particular.
Remarks
The saturation adjustment does not affect black or gray areas on the printout.
Paper type
Color to
adjust
[05] code Subcode
Recommended
value
Acceptable
value range
Default
Plain paper
Thick paper
Recycled
paper
Thin paper
C (Cyan)
05-2905
2
2 to 5 0 to 10 5
K (Black) 3
Thick paper 1/
2/3/4
Special paper
1/2/3
Envelope
Transparency
(OHP film)
C (Cyan) 8
K (Black) 9
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