HP 1055CMHP - Manual (Page 23)

Troubleshooting
1-11 HP DesignJets 1050C and 1055CM Printers Service Manual
HP-GL/2 color differences in different HP DesignJet
Printers
Color differences between one image printed on the HP DesignJet
1000 Series and the rest of the DesignJet platforms are due to the
different chemistry of the 1000 series inks compared with the rest of
the inks for other printers. This color variability among different HP
DesignJet Series Printers has been always present. To solve the
problem, try the following:
n Perform the color calibration from the driver at the time of
printing. However, that calibration is not very accurate but it may
help in the most severe cases.
n Some applications have color controls for the user to modify the
image in order to obtain the desired colors.
n Printing with PostScript reduces the problem significantly.
n Avoid very long exposures to extreme environmental conditions
after printing with glossy media (more than 12 hours at 80%
humidity may result in severe changes in color).
Scratches on prints done on NTP, Vellum and HP High
Gloss media
Normally at the end of a roll, the curl on the media is high and the
printed area can touch the media load handles or the media roll,
transferring ink to the "still-not-printed" media or damaging the
actual print. This problem mainly affects Natural Tracing Paper
(NTP), Vellum and HP High Gloss Media. To solve the problem, try
the following:
n Increase the Dry Time using the Front Panel (Refer to the User’s
Guide - Chapter 3 Working with Paper).
n Install a new roll of media.