Canon LBP7660Cdn Manual page 610

[Grayscale Profile] [Off], [On]
[PS Normal], [PS
Photo], [PS TR
[Output Profile]
Normal], [PS TR
Photo]
[Perceptual],
[Matching Method] [Saturation],
[Colorimetric]
[RGB Pure Black
[Off], [On]
Mode]
[CMYK Pure Black] [Off], [On]
collapse, depending on the data.
Set what type of processing to use for device-dependent gray data.
When it is set to [On], it uses the printer's "Grayscale Profile" to
convert it to CMYK data. However, it may be reproduced using
black (Bk) toner only, by using the [Output Profile] or [Pure
Black Text] settings.
When it is set to [Off], it is reproduced using black (Bk) toner
only.
You can define suitable profiles for data that you are trying to print.
When it is set to [PS Normal], it matches with colors close to
the colors displayed on the monitor, and prints.
When it is set to [PS Photo], it matches with colors similar to
photographs, and prints.
When it is set to [PS TR Normal], it matches with colors close
to the colors displayed on the monitor and prints, while also
controlling the bleeding of toner into text and fine lines.
When it is set to [PS TR Photo], it matches with colors similar
to photographs, and prints, while also controlling the bleeding of
toner into text and fine lines.
When [RGB Source Profile] and [CMYK Sim. Profile] are set
to [None], or [Grayscale Profile] is set to [Off], this setting is
not applied to device-dependent color data.
Specify the printing method when [RGB Source Profile] is applied.
When it is set to [Perceptual], it provides colors suitable for
printing photos and bitmap images.
When it is set to [Saturation], it provides colors suitable for
printing artwork and graphs for use in presentations.
When it is set to [Colorimetric], it reproduces as accurately as
possible the RGB color values that are within the machine's
color gamut.
When [RGB Source Profile] or [CMYK Sim. Profile] are set to
[None], if the printer receives a device-dependent color space
definition that has been processed by the host computer, the
setting for this item becomes invalid.
When device-dependent RGB data is converted to device-dependent
CMYK using [RGB Source Profile] in this machine, set what type of
processing to use for black and gray data that becomes R=G=B.
When it is set to [On], it prints using black (Bk) toner only,
regardless of the [Output Profile] setting that is selected.
When it is set to [Off], it prints according to the selected [Output
Profile] setting.
If uneven gradation or staining is visible when printing black
or gray data, set this item to [Off], and set [Output Profile] to
[Normal].
When device-dependent CMYK is processed using [CMYK Sim.
Profile] in this machine, set what type of printing to use for grey data
(C=M=Y=0).
When it is set to [On], it prints using black (Bk) toner only,
regardless of the [Output Profile] setting that is selected.
When it is set to [Off], it converts it and prints according to the
selected [Output Profile] setting.
If [CMYK Sim. Profile] is set as [None], the setting for this