Power-On Sequence; Manual Cleaning; Timer Cleaning; Flushing - Epson Stylus Photo R1800 Service Manual

EPSON Stylus Photo R1800/R2400

Manual Cleaning

This printer provides three different manual cleanings to remove ink
coagulated by air bubbles, viscous material or foreign matter. Perform the
following manual CL operations by operating the panel or using the utility
included in the printer driver.
Independently of the printing path after the previous CL, perform manual
CL from CL1 to CL3 in order if the cumulative printing timer counter is less
than 7min. Only when the cumulative printing timer counter is more than
7min, execute only CL1.
Amount of Ink Suction
•
CL1: 1.55g (0.194g per color)
•
CL2: 4.08g (0.510g per color)
•
CL3: 6.47g (0.809g per color)
Wiping Operation
Clean the nozzle surface with the right-half rubber part of the wiper.
Flushing Operation
Prevent color mixture. Stabilize the ink surface inside the nozzles.
In addition, the printer determines which CL to perform according to the
remaining amount of ink in the Cartridge. When the printer detects the
amount is low, it automatically choose the CL that uses ink less than the
other CLs. If the remaining amount of ink is extremely low (Ink Low or Ink
Out status), the printer disables the all manual Cleanings and indicates the
status on the EPW3.

Timer Cleaning

Ink is consumed depending on the combination of the cumulative printing
timer, cumulative cleaning count and cleaning timer.

Flushing

There are two types of flushing.
Flushing before printing
This is performed to reduce the viscosity of ink in the Print Head
nozzles before starting to print.
Scheduled Flushing
This is performed to prevent ink in the Print Head nozzles from
increasing its viscosity during printing.
Operating Principles

2.2.7 Power-On Sequence

The following describes the printer operation after it is powered on.
When the Carriage Unit is in the Home Position with the CR Locked
1. After power-on, the drive of the APG Motor is transmitted to the Carriage
Shaft, and the PG position changes from PG Typ. to PG++.
2. The drive of the CR Motor is transmitted to the Carriage Unit, and the
Carriage Unit performs HP detection operation in the following path.
Home position ⇒ Right frame ⇒ CR Lock confirmation position
⇒ Right frame ⇒ Home position
3. The drive of the Pump Motor is transmitted to the Cap Unit, the Cap opens
(lowers), and the CR Lock is released.
4. After the Carriage Unit has moved leftward by the specified number of
steps, the Wiper, driven by the Pump Motor, performs the following.
Wiper setting ⇒ Wiper resetting
5. The Carriage Unit returns to the home position, and the PG position
returns from PG++ to PG Typ.
6. The drive of the PF Motor is transmitted to the PF Roller and Paper Eject
Rollers (front and rear), which then rotate for about 2 seconds.
7. After moving between the left and right frames twice, the Carriage Unit
moves to the right end of the Front Paper Guide.
8. The PF Roller and Paper Eject Rollers (front and rear) rotate.
Rotation for about 4 seconds (slow speed) ⇒ Rotation for about 2
seconds
9. The Carriage Unit returns to the home position and is secured by the CR
Lock.
Printer Mechanism
Revision B
30