HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 103)

102 4 Advanced Printing Features EN
Variable Data Printing
Some applications produce documents containing two types of
information: static information like background patterns, and variable
information that changes from page to page. In a print job, variable
data printing separates the static and dynamic information and sends
the static information to the printer only once. Pages print faster
because repetitive information does not have to be processed
separately for each page.
Note This feature is automatic. No user interaction is required.