If Colour is mixed in the Damper
If the ink flows back (also known as the ink backflow) and is
mixed in the damper meaning that the ink in the damper is not
in it’s original colour anymore. In some cases, you may even
see the ink backflow when it travels through the tube back into
the ink tank and tamilate the whole tank of ink. The printhead
cannot suck ink inside, the real reason is the pressure of ink in
different ink tank is different because the level of the ink is
different, which means some ink level is higher than the other
one, so the gravity want to balance the ink level and the high
level ink go into the lower level ink damper through the
printhead.
This process is very slow, so you are more likely to see after
didn’t use the printer in a while. And also, most printheads,
when it has power, will slow or stop the ink flow.
To get ink in damper back to original colour, just use cleaning
function, the ink pump will pull all mixed ink out until the fresh
ink from ink tank refill the damper again. If the ink tank has
been terminated with wrong colour ink, you have to throw away
the ink and flush it with cleaning liquid, then put new ink in.
Once you have new ink in the tank, use the cleaning function to
get the new ink into the damper.
Since the colour mix is caused by ink level, you can simply
solve this issue from happening by refill the ink to the tank and
make them same level, generally 80% full is fine. And also you
don’t need to do this all the time, just balance the ink level
before the end of the day is fine, besides refill the ink when ink
level goes low when printing.
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