Ink System - Epson Stylus SCAN 2000 Service Manual

EPSON Stylus Scan 2000

2.2.5 Ink System

Ink system mechanism consists of 1)cap mechanism, 2)pump mechanism, carriage
lock mechanism, 4)waste ink absorber and 5)ink sequence. Out of these mechanism,
from 1) to 4) are physical mechanism and parts which are mounted on the printer
mechanism and 5) ink sequence is performed automatically by firmware. Also, unlike
previous models, since EPSON Stylus Scan 2000 has no engage/disengage mechanism
to change over pump mechanism and paper feed mechanism, it is one of the major
characteristics that pump and platen are always at work whenever the PF motor is
driven. The figure below shows head positions when the ink system and various ink
sequence are performed.
Eject roller
drive gear
Eject roller
PF (pump)
transmission
motor pinion
gear
gear
Figure 2-13. Ink System Mechanism
Operating Principles
PF roller drive
gear
Carriage lock
lever
Cleaner blade
Pump roller
Cap unit
Printer Mechanism Operation
Printable Area
2976 dots (360-dpi)
A
B
Figure 2-14. Major Ink Sequence Positions on Carriage
Revision A
C
D E F
A. ASF Pick-up position
B. Flushing
C. Wiping/rubbing position
D. Flushing position
E. Ink Discharge position
F. Cap cleaning position
40