Wow, a year sitting for a printer is quite a long time. I do not remember what its called but have you tested the "fill up ink" command? It should suck ink through the pipes from the cartridges and through the print head. How experienced are you with diy fixing printers? You could also try pushing/sucking ink cleaning solvent with a syringe through the pipes that connect to the print head. Could also be a clogged print head, we had a Mimaki that sat for a week and the printhead had to be replaced. (this was due to supplier not being albe to ship cartridges in time, they lickily covered our bill)