Paper Feed Mechanism - Epson Stylus PRO 7000 Service Manual

EPSON Stylus Pro 7000

PAPER FEED MECHANISM

The EPSON Stylus Pro 7000 feeds roll paper and cut-sheet paper using
friction, and the two sensors along the paper feed path provide all necessary
information for controlling the paper feed process. The sensors are the P-Rear
sensor located on the right near the top of the paper feed path and the P-Front
sensor located on the right under the carriage path. See Figure 2-12, "Paper
Feed Sensors" on page 64. Another important point to remember about the
paper-feed mechanism is the paper suction fans.
The paper suction fans are located behind the lower paper guide and are
necessary to keep the roll paper flat against the lower paper guide, which
prevents ink smears. The fans create a vacuum through the holes in the lower
paper guide, pulling the paper flat against the guide. The strength of the
vacuum is adjusted according to the media type setting.
Operating Principles Printer Mechanism Operation Outline
Paper Suction
Fans
No
Release
lever up?
Yes
No
P-REAR
sensor on?
Yes
P. suction fan level = P. suction fan
low
No
P-FRONT
sensor on?
Yes
P. suction fan level =
high
Finished
Figure 2-18. Paper Suction Fan Operation
Revision B
stops
72