i want to know how to determine if the cartridge that is refilled with ink has low on ink.im using HP 3900 series printer and the picture quality print is not good.i just want to know how and which is low on ink,the blue,yellow or red.thanks for any advice.How do i know if refilled cartridge is low on ink?
What i'm doing: weight an empty cartridge, fill it up, weight again and calculate the weight of the ink; all i have to do next is to weight the cartridge whenever i want and calculate the percentage.How do i know if refilled cartridge is low on ink?
Run a diagnostic page or print head cleaning, this will tell you which ink is low or out.
The one which is faded or noticeable absent is the one you need to replace or refill.
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