Paper Feed Assembly; Pf Rail - Epson Stylus PRO Color Large Format Inkjet Printer 7000 Service Manual

EPSON Stylus Pro 7000

2.2.2 Paper Feed Assembly

PF RAIL

The main paper feed components are the CR Guide Rail, the Grid Roller
Assembly which is attached to the PF Rail, and the Secondary Roller
Assembly which attaches to the back of the CR Guide Rail and faces the Grid
Roller Assembly. The Grid Roller Assembly is made up of three equal lengths
of rollers and their coupling.
The PF Motor is a DC Motor that is controlled by the software servo system,
and the servo receives a pulse from the built-in optical rotary encoder. This
rotary encoder allows for minute paper feeding.
The PF Roller torque is transferred through the PF Roller shaft edge (left
frame), and turns the PF motor pinion gear and timing belt.
Operating Principles
Grid Roller
Assembly
PF Rail
Description of Components
Secondary Roller
Assembly
Platen
PF Motor
Figure 2-11. Paper Feed Path
Revision B
CR Guide
Rail
Speed-
Reduction
Gear
Subplaten
Paper
Paper Guide,
Lower
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