I have a similar problem with a Roland SolJet Pro III XC-540. It uses DX4 printheads, and several are clogged because the previous owner left the machine unused for a long time (around two years). Could acetone work on them? The most difficult colors are yellow and magenta. I’ve read that acetone can dissolve the internal adhesive and completely destroy the printheadWe always keep a gallon of acetone handy.
typically we mix 10-15% acetone in with the manufacturer‘s flush or cleaner (this is typically ink with no pigments). Afterwards be sure to flush enough into your waste bottle to get acetone out, protect seals, lines moving parts.
”whacking it” with acetone has saved many marginal heads. It will dissolve much of the solids causing clogged nozzles, but if you don’t flush with an absurd amount of butyl carbitol (for eco sol inks) the solids will just set like cement when the acetone evaporates.
I am NOT SURE what Solvent or carrier to Use.
generally I request the EPA data sheet for the inks & see what active ingredients they have to declare.
THE OTHER ingredients are just declared as INERT which is why buying a container of their cleaner & adding either the acetone or MEK is a good starting point.
for $600 a chinese knockoff of the printhead doctor is a good investment,
better than running the wrong cleaner through all the plumbing and pumps on your machine.
on eco solvent you can end up with leaks or air leaks
I IMAGINE on UV you could end up with pinholes in the black lines letting light in CAUSING MORE CLOGS
Yes Acetone can eventually dissolve many plastics and finishes, That it why the guys above that say they use it, Also say that after you use it flush it out relentlessly until you are sure there's no acetone left.Net search says Acetone can be harsh and melt plastics.
From above
"typically we mix 10-15% acetone in with the manufacturer‘s flush or cleaner (this is typically ink with no pigments). Afterwards be sure to flush enough into your waste bottle to get acetone out, protect seals, lines moving parts."
I'm going to try on a older printhead I've had sitting around...
At some point many (most ?) heads are NOT recoverable.Yes Acetone can eventually dissolve many plastics and finishes, That it why the guys above that say they use it, Also say that after you use it flush it out relentlessly until you are sure there's no acetone left.
EVENTUALLY creates the impression you can leave an acetone solution in the machine for quite some timeYes Acetone can eventually dissolve many plastics and finishes, That it why the guys above that say they use it, Also say that after you use it flush it out relentlessly until you are sure there's no acetone left.