e-STUDIO2040C/2540C/3040C/3540C/4540C © 2011 TOSHIBA TEC CORPORATION All rights reserved
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2. Copier-specific Adjustments
2.6.1 To Adjust the Copy Image Quality in the Black 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 the effectiveness of the adjustment, restore the settings made in the previously used
procedure to the original ones. Then use other procedures.
* Both the service technician and the user can use procedure (1).
* Only the service technician must use procedures (2) to (4).
(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 [7033] to [7034], [7041] to [7044], [7048] to
[7049], [7279] to [7280] and [7676] to [7679] adjust the density level of the background.
Adjustment Original mode [05] code
Recommended
value
Acceptable
value
range
Default
Text/Photo 05-7033
Text 05-7034
Photo 05-7043 *1
Image smoothing 05-7044
Black
<Automatic density
adjustment>
User custom 05-7279
Text/Photo 05-7041
Text 05-7042
Photo 05-7048 *2
Image smoothing 05-7049
Black
<Manual density
adjustment>
User custom 05-7280
Text/Photo 05-7676
Text 05-7677
Auto color (black)
<Automatic density
adjustment>
Photo 05-7043 *1
Text/Photo 05-7678
Text 05-7679
Auto color (black)
<Manual density
adjustment>
Photo 05-7048 *2
Set 127 or larger. 0 to 255 128
*1 and *2 are common settings.
* Set the value in increments of approximately 25, while checking the copy image until the optimum value is
obtained.
After adjusting the background density, copy and check the copy image quality.
If further image quality adjustments are still necessary, use the next procedure.
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