Thought I'd share this:
Just finished resurrecting a Ricoh SG7100 A3 printer. My daughter already has an SG3110.
It was a free printer, with a low page count, but hadn't been used for about 3 years. I used to work on Ricoh copiers, so I downloaded the service manual.
I bought a sublimation conversion kit from Ink Experts, filled the carts with deionised water, and ran a purging program.
I also dismantled and cleaned the waste tank then reset the counter.
Once I had emptied the last of the water from the carts, I left them in the airing cupboard overnight to dry them out before filling them again.
If you run the purging program, the next time you switch the machine on, it runs the initial setup and loads the system with ink.
Then I ran a few head cleans and head flushes, and ran a load of pages through it to get it printing OK .
Seems to be working well, I wouldn't have liked to risk it with Expensive Sawgrass ink.
We'll have to see if the ink experts ink is any good.