User`s guide

3. Click +, and enter the paper size name.
4. Enter the paper width, paper height, and margins, and then click OK.
The paper size and printer margin you can set is as follow.
Printer Description
Sheet Feeder - Borderless
(Auto Expand)
Prints data enlarged on cut-sheet paper without margins in four
directions.
Sheet Feeder - Borderless
(Retain Size)
Prints data on cut-sheet paper without margins in four directions,
while retaining the ratio of the original size.
Manual-Rear - Borderless
(Auto Expand)
Prints data enlarged on cut-sheet paper without margins in four
directions; paper is fed through the rear manual feed slot.
Manual-Rear - Borderless
(Retain Size)
Prints data on cut-sheet paper without margins in four directions,
while retaining the ratio of the original size; paper is fed through the
rear manual feed slot.
Note:
To change the setting you have registered, click the paper size name from the list.
Epson Stylus Pro 3880 User’s Guide
Variety of Printings 94