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EPSON Stylus Pro 7000 Revision B
Operating Principles Description of Components 63
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.
Figure 2-11. Paper Feed Path
Grid Roller
Assembly
PF Rail
PF Motor
Paper Guide,
Lower
Paper
Subplaten
Platen
Speed-
Reduction
Gear
CR Guide
Rail
Secondary Roller
Assembly