i think if you want to use for production stick with the r1900, if you just want to have some fun go for the ricoh..... its a whole new dimension of your project there haha. if you have the time, and money go for it!Its only far to compare print speed numbers by epson by using the epson driver for each printer.. other wise you need to compare the print times with the rip being used for each printer.. additionally rips are not created equal the ek rip printing in 720 is very fast and can be adjusted to print faster by adjusting drop size...
it all depends what you are printing sometimes slow is better sometimes production is better theres no real guideline here.. i look forward to seeing the 1100 rip supported aswell.. i hope someone does some white ink print times and test with the 1100 for all to view aswell!!!
Im conflicted on tearing into a ricoh until i see the performace of an 1100..
the 1100 will probably work, i have one for regular ink and paper and i have very little clogging but still needs a head cleaning every day. filled with white only i cant believe its going to be much different clogging than any other epson head.
clogging on the ricoh; a printhead clogs from the sludge from bottles/lines i think as the particles settle it will clog no matter how big the nozzles are. the sludge is just to thick. but than again, theory and real world are always different. it might be that this tiny difference will be just enough to drastically improve the white ink performance.
the new roland versacam vs300 have a system to prevent settling, they probably have studied white ink. think its a sort of wims system.