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f DTC mode: byte 2F
X©A6π is set when the power is turned on.
This byte is valid when IPC ¬ option is installed, and byte 3E is X©40π.
7 6 5 4 3 2 1 0
LSBMSB
DTC
Threshold curve
000 Light
001 For OCR
010 (Darken more and more)
011
100
101 Dark
110 Dark
111 Light
Gradation
00 Ordinary image
10 High contrast image (Ex. Newspaper)
Smoothing mode
00 For OCR
01 For Image scanner
10
11
Filtering
0 : Ball>point pen mode
1 : Ordinary mode
For Image scanner
Not defined
4 $ 51