Epson Stylus Pro 4800 Professional Edition

You can make borderless prints on these roll media widths using the Auto Expand or Retain Size features:

8.3, 10, 12*, 14*, 16, and 17 inches

* Non-Epson roll media widths

The top and bottom edges can be automatically cut to any length.

Stylus Pro 4800 Custom Paper size Guide for Roll Papers in Mac OS X

Paper Size	Margins	Paper Queue
8.00/10.00/17.00	.00	Roll Paper Borderless (Auto Expand)
16.00	.00	Roll Paper Borderless (Retain Size), Roll Paper Borderless (Auto Expand), Roll Paper Banner
8.2/10.2/16.2/17.2	.00	Roll Paper Banner
8.23/10.23/16.23/17.23	.00	Roll Paper Borderless (Retain Size), Roll Paper Borderless Banner
8.25	.00	Roll Paper Borderless (Retain Size), Roll Paper Borderless (Auto Expand), Roll Paper Borderless Banner
10.25/16.25/17.25	.00	Roll Paper Borderless (Retain Size), Roll Paper Borderless Banner
Any Paper size	.55 and below	Roll Paper
Any Paper size	.25 all around	Roll Paper, Maximum