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Chapter 7 - Troubleshooting 71
2 Is the ink cartridge head dirty?
Clean the cartridge head by refering to Chapter 5,
Maintaining the Printer. The platen often gets
dirty at the same time as the head, so it is recom-
mended to also clean the platen.
3 Is the platen dirty?
Clean the platen by refering to Chapter 5, Main-
taining the Printer. If cleaning the head and the
platen does not work, contact the supplier from
where you purchased the printer.
4 Are you using the correct ink cartridge for the
chosen printing medium?
Use only OKI ink cartridges for the DP-5000
printer. When printing in colour on the glossy
side of a greeting card, use only metallic ink car-
tridges.
5 Are you printing on a rough or special surface (such
as overhead transparency film)?
Rough or specially treated surfaces may not allow
the ink to adhere well, resulting in gaps or distor-
tions. In such a case, use a halftone setting appro-
priate for the image.
6 Are you printing images with sudden colour
variations or very bright colours?
In these situations, the overlap of different col-
ours of ink can degrade the quality of the image.
Reducing the amount of halftoning can reduce
this effect. Use a halftone option appropriate for
the image.
7 Are you printing on envelopes, thermal paper, or
picture cards?
Printing is unreliable on envelopes and other sur-
faces which have a non-uniform thickness. Print-
ing and feeding of thermal paper is unreliable.
The paper side of picture cards may be printed on
if the surface is smooth and the card thickness is
0.23 mm (0.01") or less, but printing on the photo
side is unreliable.
8 Are you printing on the wrong side of the paper?
With both VPhoto Print Film and Dye Sublima-
tion Paper, printing should take place on the
glossy side. Take care not to print on back of the
paper, particularly with Dye Sublimation paper,
while using the Dye Sub ink cartridges as the rib-
bons in the cartridges may break.
