Unclogging Canon Printheads

ghwellsjr

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I would just warn against applying positive pressure into the print head. You can develop hundreds of positive psi with a syringe which can easily damadge it. You are limited to the negative pressure of -14.7 psi which probably won't damage your print head
 

gigigogu

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stratman
In my case the vessel is one half of a travel soap case.

ghwellsjr
Fully agree, only negative pressure (suction), never positive pressure.
 

stratman

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gigigogu said:
In my case the vessel is one half of a travel soap case.
Nice. :)
 

PeterBJ

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Hi gigigogu

Nice idea. No paper fibres in contact with the print head. :)

What do you use for cleaning solution? Window cleaner with ammonia, pharmacist's mixture or something different?
 

gigigogu

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PeterBJ said:
What do you use for cleaning solution?
As I cannot find in my area propylene-glycol, glycerin and ammonia, I am limited to a mixture of 75% distilled water and 25% isopropanol (isopropyl alcohol), used warm, at about 50 C (122 F) to 60 C (140 F).
 

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Thank you for info.

Maybe the key ingredient is patience. It may be much more important than the actual mixture used.

Some have also used sprinkler fluid for cars. It is a water/alcohol mixture with some detergent added. IIRC it has been used with success.
 

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gigigogu said:
PeterBJ said:
What do you use for cleaning solution?
As I cannot find in my area propylene-glycol, glycerin and ammonia, I am limited to a mixture of 75% distilled water and 25% isopropanol (isopropyl alcohol), used warm, at about 50 C (122 F) to 60 C (140 F).
Why dont you use standard washing up-liquid in your mix? :)
 

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This is interesting...

In my search for "Propylene Glycol" I read that the pink RV anifreeze contains this it and water. I found this MSDS for PRESTONE RV ANTIFREEZE:
http://www.shamrockchicago.com/MSDSPrestRVAf.html

SECTION 2: PRODUCT COMPONENTS

HAZARDOUS COMPONENTS CAS# PERCENT EXPOSURE LIMITS
Propylene Glycol 57-55-6 20-40 None Established

NON-HAZARDOUS INGREDIENTS >1%
Water 7732-18-5
Unless I'm reading that wrong: Propylene Glycol & Water ?
 

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Hey FYI: we've added this great thread to our featured items on the Homepage!
 

The Hat

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Hey FYI: we've added this great thread to our featured items on the Homepage!
The problem with revising such an old thread is that the links in most of these old posts don’t work with the new system…:hu
 
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