Figure 5-8 The Printhead Tilting Mechanism - Tektronix Phaser 360 Service Manual

5
Theory of Operation
5-10 Phaser 360 Color Printer
To accommodate printhead maintenance, the printhead can be tilted back away
from the drum. This creates room for the cap/wipe/purge assembly to be
moved into position in front of the printhead faceplate. The printhead tilts back
on its X-axis shaft that it travels on. The x-axis shaft connects to an arm. At the
lower end of the arm is a cam-following pin. The pin rides in a cam-shaped
groove in the head tilt cam gear. Marks molded on the head tilt cam gear
indicate the position of the printhead when each mark lines up with the
cam-following pin. As the gear rotates, the arm follows the motion and tilts back
the printhead.
Printhead
print position
Printhead
X-axis shaft
Cam
follower pin
Printhead
maintenance position

Figure 5-8 The printhead tilting mechanism

Drum
Tilt cam gear
Cam groove
Maximum tilt back
Print
positon
Cap/purge
Cam gear marks
Wipe
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