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e-STUDIO281c/351c/451c
2.6.2 To Adjust the Copy Image Quality in Full Color Mode
* You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed
below. You can use one procedure in conjunction with another. But if this changes the image quality more
than required or loses effectiveness of the adjustment, restore the settings made in the previously used
procedure to the original. Then perform the next procedure.
* Procedures (1) and (3) are used by the service technician, and by the user.
* Procedure (2) is used by the service technician only.
(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button.
Press the [LIGHT] button to decrease the background density.
After decreasing the background density, copy and check the image quality.
With the background density set to the minimum, if further image quality adjustments are still necessary, the
service technician must use the next procedure.
(2) Enter adjustment mode [05]. Change the values for codes [1688 to 1692] and [1698 to 1702] to adjust the
background density.
Adjustment Original mode [05] code Value recommended
Acceptable
value range
Default
Text/Photo 05-1688
Text 05-1689
Printed image 05-1690
Photo 05-1691
Automatic offsetting
adjustment for
background processing
Map 05-1692
Text/Photo 05-1698
Text 05-1699
Printed image 05-1700
Photo 05-1701
Manual offsetting
adjustment for
background processing
Map 05-1702
Set a value smaller than 128. 0 to 255 128
* The value for the automatic offsetting adjustment for background processing will be applied, only if
automatic copy density mode is selected. On the other hand, the value for the manual offsetting
adjustment for background processing will be applied, only if manual copy density mode is selected.
* Set the value in increments of approximately 10, while checking the copy image until the optimum value is
obtained.
* The outcome of the adjustment will affect only copying in Full color mode.
<Note> "Making the highlighted area more visible (or increasing the background density)" and
"eliminating the background color (or decreasing the background density)" are mutually
contradictory. If the density of the background color is decreased, the highlighted area may
become less visible.
After adjusting the background density, copy and check the copy image quality.
If further image quality adjustments are still necessary, use the next procedure.
2. Copier-specific Adjustments
2.6