Epson ActionPrinter 4000 User Manual page 45

Using Sheets
Single
5. Slide the paper down between the edge guides until it meets
resistance. After about two seconds, the printer loads the paper
automatically and is set ON LINE so that it can accept data from
your computer.
CAUTION: Never advance the paper using the platen knob
You are now ready to begin printing.
2-6 Paper Handling