I have used an Epson Stylus Pro 9900 printer now for nearly 3 years, exclusively with ConeColor inks with no ink clogging issues. I has been impeccable.
I had turned off the automatic head cleaning feature as it was cleaning the head maybe even a half dozen times a day and Dana suggested I turn it off as the sensors were likely malfunctioning.
I have been doing a nozzle check periodically, especially before important print jobs, and seldom seen a clog and have run a head cleaning whenever there was one, which solved the problem.
I did a nozzle check yesterday and thought I might have seen something in the green ink sample. I got out a magnifying glass and sure enough there were a few small gaps. I did a head cleaning and it actually got worse. I tried putting a bit of ConeColor cleaning solution on the capping station slits as recommended in various places including Epson and it got worse. I tried two power cleanings of the orange/green pair and it didn’t change much, might have ended up with one or two additional gaps. Still had to look at it with a magnifying glass.
I then did a sample print of a banner I needed to print and it looked good (there is little green in it) and so I printed the 25 foot banner. The printing quality looked great. I thought maybe just printing with it would clear up the head.
Instead, now there are much bigger gaps in the green nozzle check area. I no longer need a magnifying glass to see them.
It is under warrantee and I called Epson and they set up a case for it and said someone would call.
I have seen forum posts on the luminous landscape forum that suggested booting the printer in service mode and doing a pair cleaning there. I also see warnings about doing too much cleaning. I have done maybe 5-6 cleaning attempts so far.
When I print a green square there are significant streaks across the output.
I would love some ideas/guidance on how I can address this myself. I have also heard stories about Epson service people who didn’t know what they were doing and caused big problems.
I’ve thought of various things like filling green and orange ink cartridges (I have some empty cartridges) with head cleaner and doing a power cleaning. I have no idea if this would be wise or effective.
I don’t want to do too much without some knowledgeable guidance. Friends who have 9900s have had no problems with them, some using them over 5 years, and so they have no advice.
I know you know of a number of cases where people with this printer have had head issues. I guess now I am one of them.