Figure 3-51 Black print-quality troubleshooting page
1
3
2
1. Grids The grids are in inches and millimeters. They are label with
letters and numbers so that defects can be described by
position and by distance between repeats.
2. Color plane registration (CPR) bars After printing, the box with no extra color in each area on each
page shows how far off the CPR of that color is. Each page
has two process direction areas and three scan direction areas
that are labeled x and y and 1–11. The page should be fed by
the long edge. Each square from the center equals 42 microns.
3. Color ramp patches Used to detect offset for the OPC or developer in the image
drum or offset in the fuser.
NOTE: To get further assistance in print quality troubleshooting, go to www.hp.com/support/
cljcp4025 or www.hp.com/support/cljcp4525 and select PQ Troubleshooting Tools.
304 Chapter 3 Solve problems ENWW