FUJITSU M3097G - Manual (Page 86)

(d) Brightness: Byte 16
Specifies the brightness for half tone. For details, see the SET WINDOW
command.
(e) Threshold: Byte 17
Specifies the threshold value for line art. For details, see the SET
WINDOW command.
(f) Contrast: Byte 18
Specifics the contrast value for half tone or line art. For details, see the SET
WINDOW command.
(g) Image composition: Byte 19
Specifies the type of image to be read. The following values are supported by
this scanner:
X©00π : Line art
X©01π : Half tone
If a value X©02π or greater is specified, this scanner returns the following
error information:
f Status: B©00001π (CHECK CONDITION)
f Sense key: X©5π (ILLEGAL REQUEST)
(h) Bit per pixel: Byte 1A
Specifies the number of bits per pixel. On this scanner, X©01π (1 bit) is
specified since only binary data is valid for subwindows. If any other value
is specified, this scanner returns the following error information:
f Status: B©00001π (CHECK CONDITION)
f Sense key: X©5π (ILLEGAL REQUEST)
(i) Half tone pattern: Byte 1B and 1C
Specify the halftone method and dithered pattern. For details, see the SET
WINDOW command.
(j) RIF (reverse image format): Byte 1D
This bit is used to reverse the binary image data output.
0: Output is not reversed
1: Output is reversed
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