Although that was true and I have seen that before, never was it to this extent where 7ml of ink was cleaned out of the machine during one cleaning cycle + 20 4x6s.Please consider the nozzle configuration of this printer - 800 for black and 3x256 for the colors. This is typical for an office type printer with a preference on printing with the black ink - more nozzles result in a higher effective print speed for text. But this implies as well that every cleaning cycle sucks more ink through the black nozzles than through all color nozzles combined which might explain your observerations about the ink usage.
Thank you for the tips, unfortunately there is only one matte setting on my printer but it seems that the Photo Black is consuming less than when I first tried it. Because of this, I will continue to use the existing Matte setting in the driver to use full CMYKPlease consider the nozzle configuration of this printer - 800 for black and 3x256 for the colors. This is typical for an office type printer with a preference on printing with the black ink - more nozzles result in a higher effective print speed for text. But this implies as well that every cleaning cycle sucks more ink through the black nozzles than through all color nozzles combined which might explain your observerations about the ink usage. And there can be another effect - that the firmware is driving the black nozzles with a bigger droplet size than the color channels - this as well to improve speed for text printing - less print passes - but could explain the ink pooling, you may try another quality setting or another paper selection - do you just have the choice of one matte paper - or several - matte - archival matte ? Photo printers are typically equipped with the same number of nozzles for the black and the other inks.
If you would switch to a glossy paper setting you'll find that blacks look tinted - just give a try as a test. It can be as well an issue with the paper you are using - photo papers differ in the amount of ink they can take, it may look better with another type.
Yes, pigment inks on glossy papers typically show several effects - bronzing - a color suddenly changes when you hold the paper against reflecting light - black switching to a glossy gray - or cyan to violett or or or. And you typcially see gloss differentials between between colors - e.g. cyan vs. magenta/red or you see differences between printed and unprinted areas or areas with more or less ink density. This all can be improved with a separate overprint with a gloss optimizer but is not a 100% fix in all cases.
You'll get different results of all these effects when changing the ink and/or the paper - e.g. the Inkowl inks look different to the original Epson inks, please be aware that Epson or Canon inks and papers are such that you get best results in their resp. combinations, Epson original inks will look different on 3rd party papers, and 3rd party inks most likely won't give you the same look as Epson inks - on Epson papers. It is your judgement how important these effects are for you - some people don't consider them as critical, some people don't really care and don't see such effects and other people jut try to get the best and are very critical. You may try as well some other paper surface , I have found that the effects mentioned above are much less visible on semimatte - silk - satin type papers, and go away with a GO overprint. Give it a try.
You may try another type of glossy paper - there are two types on the market - the budget type - cc - cast coated - with a paper like back side , and the RC/PE type - resin coated sandwiched between a thin PE foil, the back side is not coated and you cannot print on it, these papers are typically premium papers but both types overlap pricewise.If I do not have any more matte paper options in the driver, does that mean I have run out of options to use CMYK?