EPSON Stylus Pro 7500
Revision A
Operating Principles
Print Mechanism Components
65
2.2.2 Paper Feed Assembly
This printer uses friction feed to carry out highly precise feeding of roll paper and cut
sheets, and comprises a unique paper feed mechanism.
Figure 2-7. Paper Feed Mechanism Unit 1/2
The paper feed mechanism unit is configured from a grid roller (one piece construction),
and pressurizing and follower roller assemblies mounted on the back of the CR guide rail
opposite the front surface.
A DC servomotor is used for the PF motor and feedback control is carried out based on
pulses output by a rotary encoder sensor built into the motor, thus maintaining high printing
precision.
Driving of the grid roller is accomplished by the PF motor via the PF timing belt which
attaches to a reduction pulley that is connected to the grid roller.
Pressure and follower roller assembly
Figure 2-8. Paper Feed Mechanical Unit PF Rail Unit
Two suction fans are mounted behind Paper Guide L2. The space in the column direction
behind Paper Guide L2 is divided into 2 compartments, and one fan is mounted in each
compartment. By drawing air through multiple holes punched in Paper Guide L2 in the
back surface of the paper path and blowing it out through the rear of the printer housing,
suction is applied to the surfaces of Paper Guides L1 and L2 and the paper is stabilized
R = Paper width flag
L = Paper Set Lever flag
Secondary Roller
Assembly
PF Motor
Paper Set Lever
Grid Roller
Grid Roller
Secondary Roller Assembly
CR Guide Rail
Speed-Reduction Gear
Platen
Center Frame
Subplaten
Paper
Paper Guide L1, L2
PF Motor
Содержание Stylus Pro 7500
Страница 1: ...EPSONStylusPRO7500 Color Large Format Inkjet Printer SEIJ00005 SERVICE MANUAL ...
Страница 6: ...Revision Status Revision Issued Date Description Rev A August 31 2000 First Release ...
Страница 10: ...C H A P T E R PRODUCTDESCRIPTION ...
Страница 57: ...C H A P T E R OPERATINGPRINCIPLES ...
Страница 75: ...C H A P T E R TROUBLESHOOTING ...
Страница 95: ...C H A P T E R DISASSEMBLY ASSEMBLY ...
Страница 169: ...C H A P T E R 0 ADJUSTMENT ...
Страница 192: ...PSON Stylus Pro 7500 Revision A djustment Adjustment Steps 192 Figure 5 13 Adjustment Menu ...
Страница 235: ...C H A P T E R MAINTENANCE ...
Страница 241: ...C H A P T E R APPENDIX ...
Страница 258: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 258 Figure 7 2 Frame Assembly ...
Страница 259: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 259 Figure 7 3 Paper Feed Assembly ...
Страница 260: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 260 Figure 7 4 Head Assembly ...
Страница 261: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 261 Figure 7 5 Carriage Assembly ...
Страница 262: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 262 Figure 7 6 Frame Accessory ...
Страница 263: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 263 Figure 7 7 Maintenance Assembly ...
Страница 264: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 264 Figure 7 8 Ink Cartridge Holder Assembly ...
Страница 265: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 265 Figure 7 9 Cable Guide ...
Страница 266: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 266 Figure 7 10 Board Base Assembly ...
Страница 267: ...PSON Stylus Pro 7500 Revision A ppendix Exploded View Diagram 267 Figure 7 11 Cover Assembly ...
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