Over 500 makes and models of the liquid ink cartridges may be refilled by users when empty. That's really the best time, as drying out and solidification of residue ink will occur within weeks or even days in very hot, dry weather. The felt 'landing pad' where the print head rests when the printer is turned off offers some seal against evapouration, and typically has a 'cleaning/purge' function to ensure good prints. Some makes fare better than others. A way to bleed air from the system is to switch printer on, observing start-up cycle; shut of at point where print head is away from 'landing pad' capping station. Leave in this position overnight. Next morning, air should have bled out through a tiny wick implanted in capping station. The faint printing symptom should be gone. Jagged or wavy text, or missing horizontal lines of text MIGHT be remedied by gently blotting print head with a little Windex or warm vinegar on a folded, lint free paper towel. Most important to take a dry portion of the towel, and remove these solvents from all surfaces.
But it all depends on your resolve not be bullied. Anti-trust, Restrictive Trade Practices Law, The Sherman Act in the U.S.; The Canada Competition Act 77 (1) and (2) all explicitly prohibit 'tied selling'. That is, no service if you use other than brand new, original toner cartridges. Image Control has a copy of a letter from Mr. Robert Cort, Project Manager, Hewlett Packard, Boise Idaho; dated July 16, 1990 wherein he states " ... we have reiterated to our dealer network, by direct mail and by means of our newsletter that the HP warranty is not affected by the customer simply using a remanufactured cartridge." I guess it's hard to get the word out, because this improper threat echoes around retailers and end users offices to this day.
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