FUJITSU SCANPARTNER 600C User Manual

Page 65

4-37

(Values under 0 in [ ] are omitted.)

Conditions for vertical scanning:
1

ó [YR x L/1200] ò- 6968 (for flat-bed scan)

ó [YR x L/1200) ó 8400 (for ADF scan)

(Values under 0 in [ ] are omitted.)

(h) Brightness: Byte 16

Specifies the brightness for half-tone monochrome output. For multibit output, this scanner ignores
this field. On this scanner, brightness is variable to seven levels as shown in the following table.

Table 4-17

Value

Brightness

Remarks

Same as 80 to

9F range (with built-in dither)

00 to 1F

Brighter

20 to 3F

40 to5F

60 to 7F

80 to 9F

Digitized

A0 to BF

C0 to DF

E0 to W

Darker

(i)

Threshold:

Byte 17

Specifies the threshold value

for use in digitizing multivalued image data. A 0 value causes auto

digitization. A value other than 0 indicates a relative brightness, where the darkest value is at X'FF',
the

brightest value is at

X'01'

and the normal (ordinary) value is at X'80'.

This scanner is limited to 64 levels of brightness. Internally, this scanner excludes X'00' and ignores the

lowest

two bits. (X'00' represents Dynamic Threshold; X'01' to X'03' are the darkest.

(j) Contrast: Byte

If a value other than X'00' is specified, this scanner returns the following error:

•

Status: B'0000l' (CHECK CONDITION)

•

Sense key:

X'5'

(ILLEGAL REQUEST)

(k) IMAGE COMPOSITION:

Byte 19

Specifies the

type of image to be read. The following values are supported by this scanner:

X'00': Binary monochrome
X'0l': Dithered monochrome
X'02': Gray scale
X'03': bi-level RGB color
X'04': Dither RGB color
X'05': Multi-level RGB color
If a value X'03' or greater is specified, this scanner returns the following error:
Status: B'00001' (CHECK CONDITION)