Background Adjustment (Black/Grayscale); Judgment Threshold For Acs - Toshiba e-STUDIO477S Service Manual

4.4.4

Background adjustment (Black/Grayscale)

The density of background can be adjusted as follows.
<Adjustment Mode (05)>
Code Color mode
7436 Black
7437
7438
7441
7439 Grayscale
<Procedure>
The procedure is the same as that of  P. 4-15 "4.4.2 Density adjustment".
4.4.5 Judgment threshold for ACS (common for copy and network
scan)
The judgment level is adjusted for the automatic identification of whether the original set on the glass is
black or color. Namely, this is to adjust the judgment level used when "Auto Color" is selected at color
modes. The same adjustment value is simultaneously applied to all cases of originals on the original
glass for copier functions and network scanning functions, and those placed on the RADF.
<Adjustment Mode (05)>
Code Item to be adjusted
7630 Judgment threshold
for ACS
<Procedure>:
The procedure is the same as that of  P. 4-15 "4.4.2 Density adjustment".
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Original mode
Text/Photo The smaller the value is, the background
becomes lighter.
Text
Acceptable values: 0 to 255 (Default: 128)
Photo
Custom mode
-
Contents
The larger the value is, the more an original tends to be judged as
black even at the Auto Color Mode. The smaller the value is, the
more it tends to be judged as color.
Acceptable values: 0 to 255 (Default: 70)
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Remarks
e-STUDIO477S/527S/477SL
SETTING / ADJUSTMENT
4