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ADJUSTMENT
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3.4.3 Background adjustment (Color Mode)
The adjustment level of background center value is adjusted. The control value of background
adjustment button is automatically adjusted to the same level as the adjusted center value.
For example, when the control value of background adjustment key ranges from 0 to 6, the background
center value (-2 to +2) is used to be the range from 6 to 14 accordingly.
<Adjustment Mode (05)>
<Procedure>
(1) While pressing [0] and [5] simultaneously, turn the power ON.
(2) Key in the codes and press the [START] button.
(3) Key in the adjustment values. Acceptable values: 0 to 50. (To correct the value once keyed in,
press the [CLEAR] button.)
(4) Press the [ENTER] or [INTERRUPT] button to store the value in memory. The equipment goes
back to the ready state.
(5) Let the equipment restart and perform the scanning job.
(6) If the desired image has not been attained, repeat step (1) to (5).
3.4.4 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)>
<Procedure>:
The procedure is the same as that of P.3-55 "3.4.2 Density adjustment".
Code Original mode Remarks
1070 Text The smaller the value is, the background becomes lighter.
Acceptable values: 0 to 50 (Default: 50)
1071 Printed Image
1072 Photo
8370 User custom
Code Item to be adjusted Contents
1675 Judgment threshold
for ACS
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)
Before adjustment
After adjustment
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
+2 +1 0 -1 -2
-1 -2+2 +1 0
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