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76 User’s Guide
2 Is the ink cartridge installed in the holder with the
(A) side up?
Make sure the ink cartridges are placed in the
holder with the identification markings (B side)
facing up.
3 Has an ink cartridge for a different printer been
installed?
Ink cartridges made by other manufacturers will
not work. Use only ink cartridges recommended
by OKI.
Printing quality, hue, and resolution queries
1 Can all four colours of the colour inks be
combined for black and white printing?
If
Darker Black
is set in colour printing or if the
brightness and contrast settings are correct, 4-col-
our black is possible. To print only with black,
turn off
Darker Black
, and return the
Image
set-
ting under Image Settings to default.
For monochrome printing, select
Greyscale
under
Document Type
.
2 Black is printed with black ink, but grey portions
are printed using four colours.
In colour printing, greyscale intermediate colours
(such as grey) are printed using four colours. If
you want to print only in black ink, set the
Docu-
ment Type
setting in the
Document/Quality
tab
in the Print dialogue box to
Greyscale
.
3 I would like to adjust the image quality of
photographs without reducing character resolution.
Characters always print at the currently selected
resolution (if an outline font is used). The image
quality of photographs can be adjusted independ-
ently using the
Halftone
setting in the
More Set-
tings
dialogue box.
4 There seems to be no difference between
photographic output using monochrome printing at
‘Fine’ and images obtained by monochrome
printing at ‘Standard’.
When monochrome printing in
Fine
, only the
characters can be printed at 1200 dpi. This is
done by smoothing the 600 dpi images. The qual-
ity of photographs, however, differs little from
that of images obtained by monochrome printing
at
Standard.