Hi, for clog problem,
1. Flush ink supply system with cleaning flush for many times till it's clear.
2. Soak printhead in cleaning flush for 12 to 24 hours, then flush again .
3. flush the printer after every time when finish use printing and cover the nozzle with wet cloth (wet the cloth with flush) and preservative film plastic . plug the inktubes with plugs.
"The glossy ads claim 100 years or 200 years of longevity without fading?
What is the brand and model number of the printer regarding this claim ?
For solvent and ecosolvent, I don't think it is possiable.