A.4 Commands

DTC mode: byte 2F

X’A6’ is set when the power is turned on.

This byte is valid when IPC-2D or IPC-3D option is installed, and byte 3E is X’40’.

MSB

LSB

7 6 5 4 3 2 1 0

DTC

Threshold curve

000

Light

 

 

 

001

 

 

For OCR

010

 

 

(Darken more and more)

011

 

 

 

100

101Dark

110

Dark

 

For Image scanner

 

111

Light

 

 

 

Gradation

00 Ordinary image

10 High contrast image (Ex. Newspaper)

Smoothing mode

00

 

 

For OCR

01

 

 

For Image scanner

10

 

 

Not defined

 

 

11

 

 

 

 

 

Filtering

 

0 :

 

 

Ball-point pen mode

1 :

 

 

Ordinary mode

Appendix A-63