I'd love to see Grandad35 chime in on this discussion as he goes beyond "eyeballing" the prints and has the background, skill, and instruments to actually measure what is currently offered as fact. I'm not disputing these comments but actual colorimetric measurements on a controlled basis would be interesting to see.Grandexp said:What I desire from a good photo printer is having totally saturated bright red and stunning rich yellow that are never achievable from inkjet printers with dye based ink. By adding a grey and several levels of grey/black ink it will not or never make the red and yellow more saturated. There is no way the grey ink is a crucial element for printing color photos. Marketing is marketing. Marketing people's words are just that.
Regarding the gray inks - Again, actual measurements of the color response would be more reliable than conjecture. From the standpoint of more neutral B/W prints, MIS sells B/W inksets for Epson printers along with custom ICC profiles and photoshop curves. They currently sell four b/w tones ranging from warm to cool. The black and graduated gray inks are integral to achieving much better b/w prints than can be obtained with the cmyk sets or cmyk, pm, pc sets (plus R and G in eight cart printers). Adding in in shades of gray should produce better b/w prints and conceivably better shades of gray in color prints. Again, conjecture falls short if someone could produce actual controlled measurements.
As we've learned from participants on this forum who have been adventurous enough to open up clogged printheads, the nozzles are only one part of the potential clog issue. Apparently, many clogs occur in the passages of the body of the printhead. Canon may have reengineered certain areas in 1 picoliter printheads to avoid having a greater tendancy to clog over 2 picoliter heads. The only clogs of which I am aware with people I know who use the ip5000 printer have been in the pigmented ink nozzles/channels, much larger nozzles than the 1 picoliter dye-based nozzles. I actually had to replace a [poorly performing (clogged?) i960 printead with less years of printing on it than my current ip5000. Of course, anecdotal reporting of personal observation and experience with such a small sample is not definitive evidence one way or another. Perhaps Grandexp can shed some light with documentation he has read on the issue of nozzle size and clogging.