Ink System Sequence - Epson Stylus Photo Service Manual

EPSON Stylus Photo

2.3.3 Ink System Sequence

The ink system sequences in this printer are combinations of basic functions described in section 2.3.1.
The printer selects the most suitable ink sequence according to the various timers, counters and flags
described in section 2.3.2. The major ink system sequences are described below.


Manual Cleaning Sequence
Manual cleaning is classified as following 4 modes according to the cleaning counter, the number of
pages printed after the latest cleaning.

CL1(Normal cleaning mode)

CL1'(Powerful cleaning, without rubbing) : Wiping, Ink absorbing, Micro absorbing, False

CL2(Powerful cleaning, with rubbing)

CL3(False Cleaning)

One-Time CL
Cleaning counter determines mode to be performed according to the repeated order when the manual
cleaning is operated continuously. Cleaning is usually performed in the order, CL1, CL1', and CL2.
However, if the printing quantity after the latest cleaning is fewer than one line, CL3 is performed.
Depending on the printing quantity after the last cleaning, other cleaning mode is selected.
Step
1 Perform more than 1-pass printing after the last
cleaning?
2 Perform less than 5 pages printing after the last
cleaning?
3 Perform more than 1 page printing after last
cleaning?
4 What is the CL2 Counter KK value?
5 One-Time Flag set?
Note) 1 *: CL2 Counter KK value is shifted to next step after the cleaning operation.
(e.g. KK=1


Power On Sequence
This sequence sets cleaning mode and CL2 counter according to the CR unit position at the power on,
ink consumption counter and the time that timer counts. If the initial charge operation is not performed,
it performs ink initial charge after the ink cartridge exchange operation is done.
2-30
Condition
KK=2, KK=3 KK=1)
: Wiping, Ink absorbing, Micro absorbing and False
absorbing.
absorbing. The composed operation is the same as
CL1, but the quantity of ink absorbing is set more
than CL1.
: Wiping, Ink absorbing, Micro absorbing, False
absorbing. The quantity of each absorbing is
the same as CL'1, but rubbing operation is added.
: Wiping, Micro absorbing, False absorbing. It absorbs
very little amount of ink, which is about 1/10 of CL1.
: The composed operation is the same as the CL1,
except that this mode absorbs more ink.
This mode specifically performed only when "One-
Time flag" is set by a removal of I/C without Ink Low/
End detection.
Yes/No
KK=2
KK=1
KK=3
Subsequent Cleaning
Mode
No CL3
Yes Go to Step 2
No CL1
Yes Go to Step 3
No Go to Step 5
Yes Go to Step 4
CL2 1*
CL1' 1*
CL1 1*
No Go to Step 4
Yes Perform One-Time CL.
Rev. A