User manual

Users Manual Model 545™ Printer Operation / Adjustments • 33
Print Head Operation
Each print module consists of two print heads mounted one on each side of a swing
arm. Through an electronic delay the two heads form a single print line. The arm
has two positions, the parked position and the print position. Upon the start
command the heads are rotated 90 degrees to the print position, and at the stop
command the heads are retracted back to the parked position where head
maintenance can take place if needed. A sensor located on the PCB in the print
module monitors the swing arm position. Care should be taken not to obstruct the
path of the print head swing arms as it may disrupt their travel and adversely effect
print quality.
Parked Position Print Position