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3.2 Basic image functions
3-11
Table 3.5 Parameters of Halftone
Parameter value Effect of parameter Default
Brightness X’01’
to
X’80’
to
X’FF’
Brightest
Normal
Darkest
X’80’
Contrast X’01’
to
X’80’
to
X’FF’
Mostly soft contrast
Normal
Mostly sharp contrast
X’80’
X’01’
X’02’
X’03’
Normal
Soft
Sharp
Gamma pattern
X’80’
to
X’84’
Use download pattern
X’01’
X’00’ For dark photo
X’01’ For dark text and photo mix
X’02’ For light photo
X’03’ For light text and photo mix
Dither
pattern
X’80’ to X’87’ downloaded pattern *1
Halftone
scheme
Error Diffusion
Dither
*1 IPC-2D or OPC-3D required. (See section 3.3.5)
NOTICE: The density of the halftone can not be adjusted by the Threshold in Table 3.4 but be adjusted
by the Brightness in Table 3.5.