Epson 8900 Series - Manual (Page 28)

Printer Setup 2-15
Z-Axis Control
The printer adjusts the printhead-to-paper clearance (z-axis) auto-
matically when you load paper into the printer. In addition, the Z-AXIS
parameter provides a manual z-axis adjustment. This selection
invokes a display that lets you adjust the printhead in or out.
You also can adjust the z-axis using an escape sequence described in
the Appendix to this manual.
Ribbon Type
The RIBBON TYPE parameter lets you choose between color
printing and black printing. The default setting is COLOR.
Ribbon Adjust
If the printer appears to be printing mixed colors or missing the upper
or lower parts of the characters, the ribbon may need adjustment.
The RIBBON ADJ parameter invokes a display that lets you adjust
the ribbon up or down.