

Printer does this, help!
I'm not sure what this issue is called, but I'm experiencing a problem with my printer.
I have an Epson EcoTank ET-1810, and it worked without any issues for about a year. About a month ago, I tried printing a card, and the printer started printing outside the card area. Since then, the problem has started.
I've tried running a Print Head Nozzle Check, Power Cleaning and Paper Guide Cleaning, but the issue remains. I've also replaced the waste ink pad. I haven't cleaned the inside of the printer because...well I don't know how, and I'm concerned about damaging something. I also don't know if its possible toclean the underside of the print head and how to even do that.
EDIT: Its mostly when printing A5 i have this problem.
Any help would be appreciated.