Image Quality Sp Adjustments - Gestetner B070 Service Manual

6.9.5 IMAGE QUALITY SP ADJUSTMENTS

Adjustments are easier with this machine, because the parameters have been
grouped and no longer have to be adjusted one by one.
In this section, we will cover the custom settings for each of the 5 original modes:
These custom settings are:
• Image Quality
• Line Width Correction
Settings adjustable for each original mode will also be covered (these do not just
affect the custom settings; they also affect all sub original modes, such as sharp
text).
• Independent Dot Erase
• Background Erase
Custom Settings for Each Mode: Image Quality
Custom Setting: Text Mode Image Quality
Item
25~55%
55.5~75%
Text
75.5~160%
160.5~400%
If the value is increased, the outlines of lines become sharper but this could cause
moiré to appear in dot patterns. If the value is decreased, image patterns become
smoother, the occurrence of moiré decreases, but the corners of characters and
intersections of lines at acute angles may not be as sharp.
There are two sets of custom settings for photo mode. One is for dithering, and one
is for error diffusion. The set of custom settings that will be used depends on the
setting of SP4904 002. The possible settings are:
0 Dither (106 line)
1 Dither (141 line)
2 Dither (212 line)
3 Error Diffusion
SM
CÓPIA NÃO CONTROLADA
Range Default
0~10 5 Normal
6-41
CÓPIA NÃO CONTROLADA
IMAGE PROCESSING
SP No.
SP4903 001
SP4903 002
SP4903 003
SP4903 004
B070/B071