We dont really print as much as we used to. our printer can go weeks between usage. every time we go to use it we are low on inks. i visually inspect it and see the ink is still there. The only thing that i can think of is the ink is drying up from sitting so long. we replace the cartridge and then by the next time its used 2 other inks will need to be replaced. its not just one certain color.  Has this happen to anyone else? is there a fix? all our other large format printers (HP and Epson) dont have this issue.