Sharp AR-280 Service Manual page 109

AR-405
With the following setting, the density gradient (γ) can be changed.
A: Auto exposure mode (Center 64, 0 ~ 127)
B: Character mode (Center 64, 0 ~ 127)
C: Character, Photo mode (Center 64, 0 ~ 127)
D: Photo mode (Error diffusion) (Center 64, 0 ~ 127)
(Note) The greater the value is, the greater the inclination is.
Set all the values to the default value 64.
Note
46 - 19 Purpose Adjustment
Used to adjust γ (density gradient) and set the density detection area in the auto copy mode and to set the
Function
(Purpose) image process mode in the photo copy mode. (Target models: AR-2X1/3X1/4XX/250/XX6 series)
Section
Item Picture quality
Operation/ 1. Select the desired mode with [↑] key or [↓] key.
Procedure (The display of the set value is highlighted.)
2. Enter the value with the 10-key.
3. Press the [OK] key or the [PRINT] key.
The value entered in procedure 2 is set.
A: Auto exposure mode setting
B: Auto exposure (Density detection) mode setting
C: Photo mode image process setting
(Note) Except for Japan, the above C is fixed to "3."
Note
1/21/1999
1: Picture quality priority mode
2: Toner consumption priority mode
(Default: Japan = 1, EX = 2)
0: OFF (All surface density detection)
1: ON (Image lead edge section density detection)
(Default: 0)
1: Memory dither 8x8 mode
2: Memory dither 8x8 mode
3: Error diffusion photo mode
(Default: Japan = 1, EX = 3)
Density
8 – 64