HP DesignJet T830 User guide - Page 171

Alignment, Finally

Page 171 highlights

Alignment Looking at patterns D, K, and L, you may find problems with the printer's printhead alignment, which can cause defects such as the following. Additionally, misalignment problems can be seen in patterns D and G in the form of color fringing (which is exaggerated below, on the right). That is, the limits between two strong colors are not well defined or a third color appears between them. Finally, a special pattern for checking the printer's printhead alignment can be found at the top left of the diagnostic sheet. This pattern has no number as it is not used for scanner checking. It is made of three colored ENWW Visual check for errors while printing the diagnostic sheet 167

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Alignment
Looking at patterns D, K, and L, you may find problems with the printer’s printhead alignment, which can cause
defects such as the following.
Additionally, misalignment problems can be seen in patterns D and G in the form of color fringing (which is
exaggerated below, on the right). That is, the limits between two strong colors are not well defined or a third
color appears between them.
Finally, a special pattern for checking the printer’s printhead alignment can be found at the top left of the
diagnostic sheet. This pattern has no number as it is not used for scanner checking. It is made of three colored
ENWW
Visual check for errors while printing the diagnostic sheet
167