Full color envelopes used to be a pain. Many times you would have to print flat sheets and then send them out to a converter to have the envelopes made. It was a time consuming and expensive process ! There were some laser printer options that could do a good job, but they had problems too. Lasers need heat to fuse the toner and that doesn’t mix well with window envelopes. Lasers also had a problem with solids that went over the seams of the envelopes, multiple thicknesses did not produce even coverage.
The new printer is a new inkjet technology based no the Memjet print head. The ink is water proof and produces a nice vibrate color.
Now in addition to variable data flat sheets, we can produce variable full color envelopes.