EPSON Stylus C82
Revision A
OPERATING PRINCIPLES
Overview
17
2.1 Overview
This section describes the operating principles of the printer mechanism and electrical
circuit boards
2.1.1 Printer Mechanism
The basic component of the printer mechanism is same the Stylus C80/C70.
Only the ASF is newly designed.
For throughput improvement, the special use Flashing Box utilizes 0/80 digit bi-
direction.
Paper can be supplied by 0/80 digit bi-direction. (Economy printing only.)
2.1.2 Carriage Motor Specification
2.1.3 Paper Feeding Motor Specification
2.1.4 Paper Loading Mechanism (New ASF unit)
The ASF of this printer is newly designed. It has the following characteristics.
Uses a Retard Roller. (Laser printers also use this roller.)
New design of PF/ASF change mechanism. (Operating principle same as
previous.)
2.1.4.1 Drive Process
1. The motion of the PF Motor is always transmitted to the Combination Gear
Ratchet 65.6 but not transmitted to the LD Roller.
2. After receiving the paper feed command, the Carriage Unit contacts the A or B
ASF Trigger Lever.
3. At this point, the Change Lever extends in the direction of arrow C, locking the
Clutch mechanism.
4. The motion of Combination Gear Ratchet 65.6 is transferred to Clutch Gear 1.
5. LD Roller Gear 2 rotates one time (LD Roller rotates once), and then the LD
Roller is stopped by the Clutch Gear again contacting the Change Lever.
Figure 2-1. Drive Process
Table 2-1. CR motor Specification
Items
Specifications
Type
DC motor with brushes
Drive voltage
+42V ± 5% (voltage applied to driver)
Coil resistance
27.1
Ω
± 10% (per phase at 25 degree)
Inductance
19.8mH ± 25% (1KH 1VmA)
Drive method
PWM, constant-current chopping
Driver IC
LB11947
Table 2-2. PF motor Specification
Items
Specifications
Type
DC motor with brushes
Drive voltage
+42V ± 5% (voltage applied to driver)
Coil resistance
22.3
Ω
± 25% (per phase at 25 degree)
Inductance
17.3mH ± 25% (1KH 1VmA)
Drive method
PWM
Driver IC
LB11947
Combination gear ratchet 65.6
Retard roller
A
2
1
B
C
ASF trigger lever
Change lever
LD roller
Содержание Stylus C82
Страница 1: ...EPSONStylusC82 Color Inkjet Printer SEIJ02003 SERVICE MANUAL ...
Страница 5: ...Revision Status Revision Issued Date Description A July 31 2002 First Release ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 16: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 21: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 24: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 43: ...C H A P T E R 5 ADJUSTMENT ...
Страница 46: ...C H A P T E R 6 MAINTENANCE ...
Страница 51: ...C H A P T E R 7 APPENDIX ...
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