Needed to do some quick print test on an image were working on, while my newer 1430 is going through a sit piezoflush clean routine for a stubborn black ink problem.
So dug out my old 1430, which has 6 piezoflush cartridges in it, and replaced the Black with ink, and made a test print.
Had it on Black/Grey Scale, plain white paper, and was shocked at how well it turned out.
No pink piezoflush hue in the print at all.
Then decided for the heck of it to print it on some matte paper, and we then had the pink piezoflush hue in the print.
Plain paper ok, different paper, gloss or whatever not.