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EPSON Stylus Pro 9500
Revision A
Operating Principles
Component List & Illustrations
55
2.1.1.2 Paper Feed Mechanism
PF RAIL UNIT
The paper transport mechanism is made of the same extruded aluminum
material as the CR guide rail and consists of a grid roller (PF roller) mounted on
the PF rail and the pressurization and follower roller assembly mounted
opposite to it on the back of the CR guide rail. The grid roller (PF roller) in the
Stylus Pro 9500 differs from the grid roller (PF roller) in the Stylus Pro 9000, in
that there is only one. (In the Stylus Pro 9000, there are 3 fixed length rollers
lined up across the breadth of the printer, linked together with a coupling
construction, and fastened to the PF rail via bearings.)
A CD motor is used for the PF motor and this motor is software servo
controlled based on pulses output from an optical rotary encoder. In the Stylus
Pro 9000, an encoder sensor and loop scale are built into the PF motor, but in
the Stylus Pro 9500, the PF motor and encoder sensor/loop scale are separate
units, with the loop scale mounted at the left end of, and concentric with the PF
roller and the encoder sensor also assembled separately in the printer’s left
edge.
Driving of the PF roller is done by transmission to the PF roller through the
following channel.
o
PF motor pinion gear _ Timing belt _ Reduction pulley _ Grid roller (PF
roller)
Suction fans are also mounted on the back side of the paper guide L (the
space in back of the paper guide L is divided into 3 cavities arranged side by
side across the width of the printer with one suction fan mounted in each
cavity), and by these fans pulling air from the back side of the paper and out
through the printer body, a suction force is applied to the paper guide L’s
surface which acts to stabilize paper travel (preventing it from lifting up).
Furthermore, the air volume is controlled by firmware (fan rotation duty control)
based on the printer’s operating state (when paper is set, during printing, etc.).
Figure 2-11. Paper Feed Mechanism - PF Rail Unit
Secondary Roller
Assembly
CR Guide
Rail
Speed-
Reduction
Gear
Platen
Grid Roller
Assembly
(PF Roller)
PF Rail
Subplaten
Paper
Paper Guide,
Lower
PF Motor
Timing Belt
Front of the Printer
Back of the Printer
Summary of Contents for Stylus Pro 9500 Engine
Page 6: ...C H A P T E R PRODUCTDESCRIPTION ...
Page 43: ...C H A P T E R OPERATINGPRINCIPLES ...
Page 69: ...C H A P T E R TROUBLESHOOTING ...
Page 82: ...C H A P T E R DISASSEMBLY ASSEMBLY ...
Page 155: ...C H A P T E R ADJUSTMENT ...
Page 219: ...C H A P T E R MAINTENANCE SETUP ...
Page 232: ...C H A P T E R APPENDIX ...
Page 250: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 250 Figure 7 3 R Frame Assembly ...
Page 251: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 251 Figure 7 4 PF Rail Assembly ...
Page 252: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 252 Figure 7 5 CR Rail Assembly ...
Page 253: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 253 Figure 7 6 CR Assy ...
Page 254: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 254 Figure 7 7 Maintenance Assy ...
Page 255: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 255 Figure 7 8 I H Assy Left ...
Page 256: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 256 Figure 7 9 I H Assy Right ...
Page 257: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 257 Figure 7 10 I H Assy 1 ...
Page 258: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 258 Figure 7 11 I H Assy 2 ...
Page 259: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 259 Figure 7 12 Tube Assembly ...
Page 260: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 260 Figure 7 13 Board Assembly ...
Page 261: ...PSON Stylus Pro 9500 Revision A ppendix Exploded view Diagram 261 Figure 7 14 Cover Assembly ...
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