Initial Ink Filling; Replacement Cleaning - Epson Stylus Photo R1800 Service Manual

EPSON Stylus Photo R1800/R2400
When the current ink consumption data in the Ink Cartridge and that in
the EEPROM is same
1. When the initial filling flag is set and the CSIC ink consumption is 0,
the printer judges that initial filling is not yet performed.
(The printer before initial filling judges that the I/C is fitted in a
power-off status.)
2. Installation count updating, CSIC information rewriting, and initial
filling are executed in that order.
3. If the initial filling flag is not set, the printer judges that I/C(s) has
not been replaced during power-off and regards the current CSIC
data as valid.
Data is written to the CSIC at the following timings.
At power-off
When starting the power saving mode
When replaced an Ink Cartridge(s)
At the time of cleaning
1. Reads the data from the CSIC.
2. Compare the date with the ink consumption data in the EEPROM.
3. If the EEPROM data is same as the CSIC data, ends the
sequence. If they differ, the difference is added to write the sum in
the CSIC.
Operating Principles

Initial Ink Filling

When the printer is powered on for the first time after purchase, the printer
executes the initial ink filling operation to fill the ink cavities of the Head
with ink. When the initial ink filling operation is performed properly, the
printer clears the flag in the EEPROM so that initial ink filling operation will
not be performed when it is powered on the next time. The Stylus Photo
R1800 requires about 160 seconds to perform the initial ink filling
operation.
If the sequence does not end normally during initial filling, the initial filling
flag is not cleared and the CL operating flag is set. Because of these flags,
when powered on the next time, the printer assumes that it was powered
off for some reason during initial filling and executes CL3 instead of the
initial filling sequence. (On the conventional mode, initial filling was
executed again. However, when this operation was performed, ink was
wasted and therefore CL3 is executed to cover the ink filling performance.)
When the initial filling flag is set and the CL operating flag is not set, the
printer judges that the initial filling was not executed at all (power was
switched on but the cartridges were not installed), and when the printer is
powered on the next time, it executes initial filling.

Replacement Cleaning

Replacement CL1 is executed when replaced an Ink Cartridge(s).
Amount of Ink Suction
Replacement CL1: 3.09g (0.386g per color)
Printer Mechanism
Revision B
29