HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 194)

EN Print Quality Problems 193
Dull or dark colors on
transparencies The printer is not correctly fusing the toner to the
transparency. Check Transparency in Paper tab in the
printer driver. For more information on changing the
printer driver settings, see the online help.
The media input tray is not correctly configured for
transparencies. For more information on configuring the
input tray, see “
Configuring Media Type and Size ” in
chapter 2 .
Transparency is not selected as the media type on the
Paper tab in the printer driver. When Transparency is
selected as the media type and ColorSmart II is
selected on the Color tab, the printer will use a color
treatment optimized for projection. To choose different
color treatments for transparencies, use the Manual
setting on the Color tab. For more information on using
color, see chapter
5 , “ Using Color .”
Turn the printer off and on to reset the printer's density
calibration.
Reflective overhead projectors reflect light through the
transparency twice, causing excessive light scattering
and producing colors that appear dark or dull on the
screen. If you are using a reflective overhead projector
(usually a portable overhead projector), use a standard
overhead projector, if available.
You are using a transparency that is outside the
specifications for this printer. Use HP brand
transparencies to produce the best image quality for the
printer. For media specifications, see “
Supported Media
Weights and Sizes for Input Trays ” in chapter 3 .
The selected colors give an undesirable appearance
when printed. Select different colors in your application.
Spots and smudges appear in the background areas of
transparencies when they are projected on the screen.
Reprint the transparencies, being careful not to touch
the surface of transparencies. Oil from your fingers and
hands can contaminate transparencies, leaving oil
spots or smudges on the transparencies.
Problem Cause and Solution