Have tried down loading it from computer but it will only go so far then says that there is an error see /var/log/jockey.log. The printer will respond to the command print but will not print, it takes all the paper and puts it through the machine until it runs out of supply
I had this working with an older version of ubuntu, by installing this driver, which can be found on the web:
My notes tell me that these drivers don't work:
Stylus SX420W and Stylus TX420W,
and that the one that did work was called:
However, when I try installing this now, it says it's already installed that driver, and it won't let me choose a different printer type.
So some level of messing about may help here.
Aha! Go to printer properties, and change the make and model to Epson Stylus TX420W Series - epson-inkjet-printer 1.0.0-1lsb3.2 (Seiko Epson Corporation LSB 3.2).
Then it seems to work fine!