Operating Principles STYLUS 800 Service Manual
2.3.2.3 Ink End Detection
The
IE
(Ink End) sensor attached to the carriage detects, not only the ink end, but also when ink is
low and whether an ink cartridge is installed. The detected status is classified to five modes
according to the output voltage level of the
IE
sensor.
❑ Mode A:
No I/C (Abnormal conduction)
❑ Mode B:
Ink is low
9
Mode C:
Ink end (During pump operation)
■ Mode D:
Ink end (During printing)
■ Mode E:
No I/C (not installed)
r=l
(not printable)
(printable)
(not printable)
(not printable)
(not printable)
r-
Ist check
A
<
Vout
c
B ?
L*-,
a
r--+
b&K-.l
Figure 2-16. Ink End Detection Sequence
When the ink end detection operation has determined ink status, the printer indicates the status on
the control panel, as described
1) During printing:
2) During pump operation:
3)
In stand-by state:
below:
If Mode D (ink end) or Mode A or E (no I/C) is detected, the
pnnthead
is capped and the control panel indicates an “INK END”
error.
If Mode C is detected, the printer indicates an “INK END” error after
the detection operation sequence completes and interrupts pump
operation.
If Mode A or E is detected, the printer indicates an “INK END” error
after interrupting the pump operation.
If Mode D or Mode A or E is detected, the printer indicates an “INK
END” error on the control panel.
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2-14
Rev.
A