I did another test. I had the words "Header" and "Footer", with several rows sandwiched in between.The words "header" and "footer" were printed. They were in Arial font size 12. The rows were printed in Arial size 7. So I'm changing everything to 12 to see what happens.
Then I tried to put everything in Arial Font size 12, and nothing happened. The words Header and Footer still printed, and the space between them remained the same, even though there should be 12 lines of text in between.
The network printer is the only printer installed.