Background Adjustment (Color Mode) - Oki MB760 Service Manual

4.4.3

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.
Before adjustment
After adjustment
<Adjustment Mode (05)>
Code Original mode
8309 Text/Photo
8310 Text
8311 Photo
8370 Custom mode
<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 255. (To correct the value once keyed
in, press the [CLEAR] button.)
(4) Press the [OK] 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).
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".
45641001TH Rev.1
+2 +1 0 -1 -2
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
+2 +1
Fig 6-2
The smaller the value is, the background becomes lighter.
Acceptable values: 0 to 255 (Default: 128)
Original mode
Text/Photo The smaller the value is, the background
becomes lighter.
Text
Acceptable values: 0 to 255 (Default: 128)
Photo
Custom mode
−
Oki Data CONFIDENTIAL
0 -1 -2
Remarks
Remarks
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