Toshiba E-STUDIO5506AC - To Adjust the Copy Image Quality in the Black Mode

e-STUDIO5506AC/6506AC/7506AC (Ver01) © 2016, 2017 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 (3).
(1) Press [IMAGE] on the Control Panel. Press [BACKGROUND ADJUSTMENT].
Press [LIGHT] 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) Select [05 ADJUSTMENT MODE]. Change the values for codes [7100] to [7102], [7105] and [7106] adjust
the density level of the background.
Adjustment Original mode [05] code
Recommended
value
Acceptable
value
range
Default
Black
Text/Photo
05-7100
Set 128 or
smaller.
0 to 255 128
Text
05-7101
Photo
05-7102
Image smoothing
05-7105
User custom
05-7106
* The smaller the setting value, the lighter the background becomes, while the larger the setting value, the
darker the background becomes.
Adjust the value and determine the optimal value while checking the copies by considering that the
setting value "25" for the [05] code corresponds to one step in the background adjustment on the control
panel.
If further image quality adjustments are still necessary, use the next procedure.
(3) Select [05 ADJUSTMENT MODE]. Change the values for codes [7190] to [7192] to adjust the gamma
balance in each of low- and medium-density areas.
Original
mode
[05] code Subcode
Recommended value
Acceptable
value range
Default
Text/Photo
05-7190
0/1
Set a value smaller than 128. 0 to 255 128
Text
05-7191
0/1
Photo
05-7192
0/1
* Set the value in increments of approximately 20, while checking the copy image until the optimum value is obtained.
* The subcode varies according to the area where the density is adjusted. Refer to the table below and set the
subcode for the area to be adjusted. The background density will vary, if the low- or medium-density area