12 How do I... (Image Diagnostics Print topics)
Print the Image Diagnostics Print ..................................................................................................... 118
Respond to the Image Diagnostics Print .......................................................................................... 118
Interpret Image Diagnostics part 1 ................................................................................................... 118
Interpret Image Diagnostics part 2 ................................................................................................... 119
Interpret Image Diagnostics part 3 ................................................................................................... 121
If I still have a problem ..................................................................................................................... 122
13 How do I... (paper advance calibration topics)
Overview of the calibration process ................................................................................................. 125
The calibration process in detail ....................................................................................................... 126
After calibration ................................................................................................................................ 128
14 The problem is... (paper topics)
The paper cannot be loaded successfully [4020] ............................................................................. 130
The paper cannot be loaded successfully [4520] ............................................................................. 131
A paper jam (paper stuck in the printer) [4020] ................................................................................ 13 1
A paper jam (paper stuck in the printer) [4520] ................................................................................ 13 3
A paper jam in drawer 2 [4520] ........................................................................................................ 142
Prints do not stack properly in the bin .............................................................................................. 147
The printer uses a lot of paper to align the printheads ..................................................................... 147
The paper moves while the printer is in standby mode [4520] ......................................................... 147
The printer unloads or trims the paper after a long period of disuse [4520] ..................................... 148
The printer unloads the paper while switched off [4520] .................................................................. 148
The printer unloads the paper when switched on [4520] .................................................................. 148
15 The problem is... (print quality topics)
General advice ................................................................................................................................. 150
Banding (horizontal lines across the image) .................................................................................... 150
Lines are missing or thinner than expected ...................................................................................... 151
Solid bands or lines printed over the image ..................................................................................... 151
Graininess ........................................................................................................................................ 152
The paper is not flat .......................................................................................................................... 152
The print smudges when touched .................................................................................................... 152
Ink marks on the paper ..................................................................................................................... 153
A defect near the start of a print ....................................................................................................... 154
Lines are stepped ............................................................................................................................. 154
Lines are printed double or in wrong colors ..................................................................................... 154
Lines are discontinuous .................................................................................................................... 155
Lines are blurred (ink bleeds from lines) .......................................................................................... 155
Lines are slightly warped .................................................................................................................. 156
Color accuracy ................................................................................................................................. 156
PANTONE color accuracy ................................................................................................................ 156
Color matching between different HP Designjets ............................................................................. 157
Improving gray neutrality .................................................................................................................. 159
vi ENWW
