Performance trends for marking technologies in copiers and printers

This article examines trends over the last three decades of selected attrib utes for copier and printer products using xerography and thermal ink jet m arking technologies. Relationships are identified between attributes that c onsolidate data and reveal underlying trends. An engineering performance me tric is examined, useful for interpreting the trends. The analysis forms a foundation that could possibly be extended to develop projections of key pe rformance attributes for the near future.