EPSON Stylus COLOR 670
Revision A
Operating Principles
Overview
37
2.1.4 Paper Feeding Mechanism
The paper feeding mechanism consists of paper feed motor (PF motor), PF
roller, paper eject roller, paper guide, and so on.
The paper feeding mechanism feeds paper loaded from ASF using the PF
roller and paper eject roller.
Figure 2-5. Paper Feeding Mechanism (Top View)
The following stepping motors are used to drive the paper feeding
mechanism.
When DE (disengage) lever is at normal position, torque from the PF motor is
sent to the PF roller and paper eject roller as described below.
o
To the PF roller:
PF motor pinion gear
→
Combination gear (3, 30)
→
Spur gear (67.2)
→
PF roller
o
To the paper eject roller:
PF motor pinion gear
→
Combination gear (6, 34.4)
→
Spur gear (36)
→
Paper eject roller
EPSON Stylus COLOR 670 allows printing up to the last 3mm like EPSON
Stylus Photo 720 / EPSON Stylus Photo EX3. The star-wheel roller assembly
has been shifted 5 degrees from directly on the top of the eject roller towards
the paper feed roller. This suppresses the tailing edge of the paper so that the
old minimum margin of 14mm has been reduced to only 3mm.
Figure 2-6. Paper Transportation (Right side view)
Table 2-4. Paper Feed Motors
Item
Description
Motor type
4-Phase/ 48-Pole PM Stepping motor
Drive voltage
+42 V +/ - 5% (DRV IC voltage)
Coil Resistance
7.8
Ω
+/ - 10% (per phase)
Inductance
14 mH +/ - 20%
Driving method
Bi-Polar drive
Driver IC
LB11847
Spur Gear 67.2
Spur Gear 36
Combination Gear
Pinion gear
Combination Gear 3,30
Combination Gear
Spur Gear26.4
Paper
Star Wheel Assy.
Printhead
Support Roller
PF Roller
Eject Roller
Platen
Five Degrees
Steady
Bottom margin 3 mm touches
the printhead surface.
[ Stylus COLOR 600 ]
[EPSON Stylus COLOR 670]
Содержание Stylus Color 670
Страница 1: ...EPSON EPSONStylusCOLOR670 Color Inkjet Printer SEIJ99016 SERVICE MANUAL ...
Страница 6: ...Revision Status Revision Issued Date Description Rev A January 27 2000 First Release ...
Страница 10: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 30: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 52: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 66: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 99: ...C H A P T E R 5 ADJUSTMENT ...
Страница 122: ...C H A P T E R 6 MAINTENANCE ...
Страница 129: ...C H A P T E R 7 APPENDIX ...
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