Canon GP215 Service Manual page 307

2. Priority on Image Quality Mode
a. AE_SLOP
For priority on image quality mode, an AE table is selected based on a study of the original density his-
togram prepared during a pre-scan.
The slice level distinguishing the data into text (black) and background (white) can be adjusted under
'AE_SLOP' in service mode (ADJUT; *3*).
AE_SLOP: A higher setting makes the images darker; between 1 and 19. (left of Figure 3-1027)
b. AE_LIGHT/AE_DARK
The AE table selected as a result of a pre-scan may be corrected to suit the preference of the user.
AE_LIGHT: A higher setting emphasizes the background of the original; a lower setting, on the other
hand, de-emphasize the background of the original; between 0 and 40 with the default at 20. (upper right
of Figure 3-1027)
AE_DARK: A higher setting will increase black; a lower setting, on the other hand, will decrease black;
between 0 and 40 with the default at 20. (Figure 3-1027)
Slide level dividing white area (background) and black area
(text; may be changed under 'AE_ SLOP' of 'ADJUST' in service mode (*3*)).
Lower
setting
Degree
Original
density histogram
Dark
(black)
Text
White
Output
Black
Dark
(black)
COPYRIGHT © 1996 CANON INC.
Higher
setting
Signal level
Light
(white)
Background
AE table
Light
Input
(white)
Figure 3-1027
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATIONS AND TIMING
White
Higher
setting
Output
Black
Dark
Input
(black)
White
Lower
Output
setting
Higher setting
Black
Dark
Input
(black)
Lower setting
May be adjusted
under 'AE_LIGHT'
of 'ADJUST' in
service mode (*3*).
Light
(white)
May be adjusted
under 'AE_DARK'
of 'ADJUST' in
service mode (*3*).
Light
(white)
3–253