Print Quality
6-19
HP DesignJet 5000 and 5500 Series Printers Service Manual
length by several centimeters. Depending on the type of problem,
the troubleshooting sequence is different.
1 Improper use of crop marks.
If the customer is using crop marks, this can be the cause of the
length difference because the way the margins and the crop marks
are implemented in the DJ5000 is very different from the way it is
done in other Designjet products, e.g. DJ2000, 2500, 3000 & 3500.
2 Use of Coated Media when trying to get precise output.
If the customer is using any type of Coated Media, Bond, etc. advise
them to use glossy or polyester based films when the print accuracy
is important.
Colors are not as Expected
If the Application or Driver settings are not correct, this could result
in colors which are different than the one that were expected.
To have full control of the colors that are printed, use the CMYK
option and no emulation (in Driver). Sending a file in RGB even
with no color emulation could end up in undesirable results. If a
Postscript file is not sent from a DesignJet 5X00 PS driver, make
sure you have the following settings in the Front Panel: Printer Setup
Menu > Internal RIP settings > Ink Emulation > CMYK= Native.
As a special case, Adobe PhotoShop sends Pantone Colors as
CMYK (no Pantone name). Therefore, Pantone Calibration does
not make any difference. The file should be created as CMYK to
prevent unexpected color changes.
Banding at the Top of the Page
Some prints may have banding in the first 2-3 centimeters or swaths.
This kind of problem normally happens at the top of the page (the
rest of the print is not affected), because the error-hiding algorithm
cannot be applied at the beginning of the print in certain
circumstances. This depends on the Take-Up Reel installation
settings, the media used and the plot margins selected.
To prevent banding at the top of the page, the Printer should be
configured as follows:
1 Take-Up reel installed and loaded (only for customers that have a
Take-Up Reel, if not got to the following step).
2
Select the paper margins as normal (only for customers which use the
extended margin PPD in the driver, if not go to the following step).
