Repairing clogged print heads

[Mark M]

I come across many printers with internal heads or semi
removable/interchangable heads (such as canon) which are
not printing anymore due to extreme clogging (often from
not being used in a long time.
Many of those would be useful if i could salvage the heads.
What would be the best way to unclog them?
Suggestions welcome.

Depends on the printer brand/model. Some have easily removable
heads, some don't. For the first category just revove the heads and
soak the nozzles (NOT the entire head) in a bit of alcohol. For the
second category, soak a paper towel with alcohol and press it firmly
into the nozzle surface, and let it sit for a few hours.

But clogs can occur as often or more often elsewhere in the ink supply
chain, such as where the supply tubes feed into the cartridges, or even
entire portions of the tubes can get clogged if air is introduced for long
periods of time.

 

[Chuck]

I come across many printers with internal heads or semi
removable/interchangable heads (such as canon) which are
not printing anymore due to extreme clogging (often from
not being used in a long time.
Many of those would be useful if i could salvage the heads.
What would be the best way to unclog them?
Suggestions welcome.

Bart Bervoets

On the Epsons, I fill a syringe with 99% alcohol, remove the
cartridge, and shoot the alcohol down the print nozzle. This almost
instantaneously removes the clog. Chuck

 

[Beloved Leader]

I've tried heating up isopropyl rubbing alcohol in a drinking glass in
a microwave. I use just enough alcohol to cover the bottom of an HP 26
or 29 cartridge. I have to tell you that I have never achieved
longlasting results with HP cartridges. I can refill and restore Canon
black cartridges such as theBC-03 (I think) easily, but the HP's have
been nothing but an exercise in futility.

 

[Bart Bervoets]

I come across many printers with internal heads or semi
removable/interchangable heads (such as canon) which are
not printing anymore due to extreme clogging (often from
not being used in a long time.
Many of those would be useful if i could salvage the heads.
What would be the best way to unclog them?
Suggestions welcome.

Bart Bervoets

 

[Peter Duck]

In message <[email protected]>

... Suggestions welcome.

Unsurprisingly, this is a 'hardy perennial' topic in comp.periphs.printers

Groups.google will find you innumerable relevant threads, re almost any
make/model and particularly Epson, many actually helpful ...