Printhead Protection; Ink Charge; Ink End Detection; Cover Open Detection - Epson SQ-1170 Service Manual

REV.-A
To keep the print quality, several kinds of printhead cleaning functions are performed automatically.
(1) Power on cleaning
Performed at power on when '(4) Cleaning' as defined below is not required. It takes about several
seconds.
(2) Capping
In the following cases the printhead is capped. It takes about a second.
Printing is stopped about 3 seconds.
Entering the PAUSE condition.
(3) Refresh nozzles
Performed about every 15 seconds during printing. It takes less than
(4) Cleaning
In the following cases the printhead cleaning is performed and it takes
Turning the power on when the printhead has not been capped.
Turning the power on more than 7 days after the last cleaning.
. Pressing the CLEANING button.

1.6.12 Ink Charge

Install the ink cartridge to the printer and turn the printer power on while pressing the CLEANING switch
down. The 'Ink Charge' function is started. It takes about 3 minutes to complete this functionlt is needed
only at the first time the new printer is used.

1.6.13 Ink End Detection

If ink end sensor detects ink end condition, 'INK END' indicator blinks performing 200 lines of printing,
and the printer enters the ink end condition. ('INK END' indicator is lit.)
If ink cartridge is removed, 'INK END' indicator is lit and the printer enters the ink end condition
immediately.

Cover Open Detection

1.6.14
Cover open detector is installed to stop the printing whenever the printer cover is opened. If cover open
is detected, the printer enters the cover open error condition.
CAUTION:
Don't open the printer cover while printing.
a
1-24
second.
about 20 seconds.