Help trying to solve blurry/double black text when only in the "Plain Paper" setting (using a photo paper setting comes out perfect)

[mikling]

Try flushing the tank, drying it out properly and then refill. Ideally with an ink that has slightly different properties. Test that it beads a little less than the one you are currently using. Chances are flushing will allow the print to return to normal but a different more suitable ink will make the window of acceptance a little larger.

 

[stratman]

IMHO this has little or nothing to do with the cooling properties of the ink itself. Maybe it’s the viscosity or something else, but the cooling properties of ink are due to water

The forum consensus is that ink has cooling properties due to the formulation as a whole and not just from water, which, as you say, is in all inks. OEM ink is tuned to the needs of the print head. I doubt Canon forgot about thermodynamics in their design. Aftermarket inks are not as well formulated, hence the variable overall performance of Universal type inks compared to inks thought to be more customized for a particular model of inkset, including the variable 'coolant'.

Viscosity is a property of the ink and may contribute to cooling, maybe similar to the viscosity of antifreeze affecting performance.

 

[soysauce]

IMHO this has little or nothing to do with the cooling properties of the ink itself. Maybe it’s the viscosity or something else, but the cooling properties of ink are due to water, which is a component of much more high specific heat than any other. All inks are composed at least of 70-80% of water so I don’t see how some of them would cool significantly better than others.

Your reasoning seems sensible. Is warping something that people have observed directly? Which parts warp, and what is their composition?

 

[Ink stained Fingers]

the pattern of the PGBK shows that the printhead has reached the end of its useful lifetime, this problem cannot be cleaned away. You may consider a printhead replacement or an upgrade of your current printer.


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