Epson 3260 - Manual (Page 71)

Replacing the ribbon cartridge
When the printing becomes faint, you need to replace the
ribbon cartridge. Epson recommends the following ribbon
cartridge:
so15060 blackribbon cartridge
so15061 color ribbon cartridge
Caution:
If you have just used the printer, let the print head cool for a
few minutes before you touch it.
To remove the old ribbon cartridge, first move the print head
to the center of the printer. Then remove the cartridge by
lifting the posts on either side of the unit.
To replace the ribbon cartridge, follow the steps in “Installing
the Ribbon Cartridge” in Chapter 1.
Using the Printer 3-15