HP 8000 s manual Input tray, see Configuring Media Type and Size

Problem	Cause and Solution
Dull or dark colors on	The printer is not correctly fusing the toner to the
transparencies	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.

EN Print Quality Problems 193