Epson Stylus Color 1160 User Manual

EPSON Stylus COLOR 860/1160 Revision C
Operating Principles Overview 38
2.1.1.8 Pump Mechanism
The pump mechanism absorbs ink from the printhead or the cap assembly.
The wiper for head cleaning is attached in the cap assembly. The pump
mechanism is driven by the ASF/Pump motor, a 4phase 48-pole PM type
stepping motor. See Table 2-6 for the ASF/Pump motor specifications. Torque
from the ASF/Pump motor is sent to the pump unit by the switching operation
of the planetary gear in the disengage mechanism. The ASF/Pump motor
torque is transmitted to the pump mechanism as described below.
o Torque transmission to the pump unit
1) When the CR unit moves to the right end of the CR shaft, the DE lock lever)
is pushed to the right end.
2) The ASF-Pump motor rotates specified steps counterclockwise (viewed
from the motor pinion gear side).
3) With the rotation of step 2), the planetary gear set in the disengage unit
moves to the combination gear (17.19, 25.6) side.
4) The CR unit moves specified steps from the right end of the CR shaft to the
left. With this motion, the DE lock lever fixes the planetary gear set.
5) Torque from the ASF/Pump motor is transmitted as described below.
Motor pinion gear
→ Planetary gear (15.2) → Combination gear (17.19, 25.6)
→ Tension belt → Spur gear → Pump unit
Figure 2-11. Torque to the Pump Mechanism
When the ASF/Pump motor torque is switched to the pump unit side by the
disengage mechanism, the function of the pump mechanism varies depending
on the rotational direction of the motor, as shown in the table below.
Table 2-8. ASF/Pump Motor Functions
Figure 2-12 shows the operating principles of the pump mechanism.
Figure 2-12. Pump Mechanism
C o m b in a tio n G e a r 1 7 .1 9 ,2 5 .6
Planetary gear 15.2 unit
C om bination G ear 12,22.4
C om bination G ear 14,28
D E L o c k L e v e r
P in io n fo r
A S F /P u m p M o to r
A
P u m p U n it G e a r
Tension Belt
: Pum p ink absorption rotation
: P u m p s id e s w itc h ro ta tio n
Directions Corresponding Functions
Counterclockwise
• Switches torque to the ASF side.
• Ink absorption by the pump
• Sets the wiper.
Clockwise
• Releases the pump.
• Resets the wiper.
Counterclockwise
Clockwis
Tube pressured
Tube released

Epson Stylus Color 1160 Specifications

General

Brand	Epson
Model	Stylus Color 1160
Category	Printer
Language	English