Operation Manual

English
Troubleshooting 7-13
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-colour black is possible. To print only with black,
turn off
Darker Black, and return the Image setting 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
Document 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
independently using the
Halftone setting in the More Settings 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 quality
of photographs, however, differs little from that of images obtained by
monochrome printing at
Standard.
5 When plain or other coarse-surfaced paper is printed in colour, ink
is missing from a number of points on the image.
When paper with a coarse surface is used for full colour printing, ink
will be missing from certain points where it was difficult to deposit. To
correct this, you can attempt the following.
– Set the Halftone setting in the
More Settings dialogue box to
Standard Dither for printing. The image will be coarse, but the ink
will transfer to the paper more reliably.
– If you have VPhoto Primer ink, the image quality may be improved
by providing an undercoat.