Image] Tab - Riso 9630R User Manual

Chapter 8 Optional Equipment

[Image] Tab

For more information on each setting item, see
"[Image] Tab" (p. 3-24) in "Printing".
• [Data Compression] in [Image Quality] is not
available with the PostScript printer driver.
Gamma Correction
Adjust the brightness, contrast, and gamma value
of cyan, magenta, yellow, black, and gray.
Select the [Gamma Correction] check box and click
[Details] to display the [Gamma Correction] dialog box.
[Brightness]
The smaller the value, the brighter (more whitish) the
color. The larger the value, the darker (more blackish) the
color.
Specify a value between -2 and +2.
[Contrast]
Adjusts the ratio of brightness to darkness. The smaller
the value, the lower the contrast. The larger the value,
the higher the contrast.
Specify a value between -2 and +2.
[Cyan], [Magenta], [Yellow], [Black], [Gray]
Corrects the gamma value of each color.
The smaller the value, the lighter the color. The larger the
value, the deeper the color. When you set the value to
1.00, the gamma value is not corrected and the color
does not change.
Specify a value between 0.01 and 3.00.
• Make your color adjustments based on the
advice of the administrator.
8-48
Color Profile
Use a color profile to perform color management.
• [Color Profile] and [Print Density] cannot be
used at the same time. (p. 3-24 "Print Density")
Select the [Color Profile] check box and click [Details] to
display the [Color Profile] dialog box.
■ Output Profile
You can select [Auto] or any output profile that has been
added.
• When [Auto] is selected, the output profile is
automatically configured based on the paper
type and resolution settings.
■ Rendering Intent
Use a color conversion method to perform color
replacement when different colors are expressed by
combinations of numerical values.
Select one of four different color conversion methods to
perform color replacement.
[Perceptual]
Preserves the visual relationship between colors, so that
colors that appear natural to the human eye.
• This method is useful when the image data includes
many out-of-gamut colors that cannot be printed, and
is most suitable for photographic images.
[Saturation]
Produces vivid colors in the image.
• This method is most suitable for graphics such as
charts and graphs, in which bright saturated colors are
important.
[Relative Colorimetric]
Compares the extreme highlights of the source color
space to that of the destination color space, and converts
all colors accordingly. Out-of-gamut colors are converted
to the closest reproducible color in the destination color
space.
• This method preserves more of the original colors in
an image than [Perceptual].
[Absolute Colorimetric]
Preserves the colors that are inside the gamut, and clips
those that are outside the gamut.
• This method is particularly useful for previewing how
paper color affects printed colors.
ComColor GD Series User's Guide