HP color laserjet 4500 Manuale Utente

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184 Chapter 9 Image quality
 EN
Overhead transparency defects 
Overhead transparencies may display any of the image quality defects 
shown in the previous samples. In addition, because transparencies are 
pliable while in the print path, they are subject to being marked by the 
media-handling components. 
Note
Allow transparencies to cool at least 30 seconds before handling 
them.
Make sure that “transparency” is checked as the media type in the 
Paper Tab in the printer drive. Also, make sure that the media input 
tray is correctly configured for transparencies. 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.
If transparencies show lines and creases in the media or in the 
printed output, compare the defect against the repetitive defect ruler 
(see the service manual) to help isolate the cause to a particular 
component. 
Check that the transparencies meet the specifications listed in the 
HP LaserJet Family Print Media Guide.
If the transparencies have spots or smudges, reprint them being 
careful not to touch the surface of the media. Skin oils can 
contaminate transparencies, causing spots and smudges.
Small random dark areas on the trailing edge of solid fill pages may 
be caused by transparencies sticking together in the face up bin. Try 
printing the job in smaller batches.
Send transparencies only to the face-down output bin. 
Transparencies created on the printer may look rough, but they can still 
be used successfully on reflective-type (portable) transparency 
projectors.