The 4880 and iPF5100 can only print borderless on the sides. There is no area for the ink to go printing borderless on the leading and trailing edges. They can do borderless on rolls because they print with a border on the leading and trailing edges then cut the border off with the on board cutter.
A quick look at the 4880 specs and it looks like it will print edge to edge on sheets but not end to end.
Edge-to-edge / Borderless
Roll media / Cut sheet Both edge-to-edge and full bleed* for the following media widths: 8"*,10", 12",
14", 16", 17", 210 mm, 257 mm, 300 mm, 329 mm, 400 mm, 420 mm
Top and bottom edges can be automatically cut to any length
the canon will not print edge to edge on sheets, only rolls.
Borderless Printing Width (Roll Media Only)
10" (254 mm), B4 (257 mm), A3+ (329 mm), 14" (356 mm), 16" (407 mm), A2 (420 mm), A2+/17" (432 mm)
You should be able to use the 3880 the same as the 2880 with the page set up so you can print on your 10" x 12" paper. Or with the 4880 on 10" or 12" rolls and the iPF5100 on 10" rolls. Also remember you will have some curl to deal with using the rolls.
If you printing with the borderless option turned off on the 2880 you have to remember that the image gets enlarged slightly to allow for the overspray so if needed exact image sizes you would have to adjust your image size smaller to account for the enlargement.
Also remember that the 4880, iPF5100 can print down to 8x10 sheet paper (you can cheat that size a little), the 3880 will print down to 4x6.
Tony B.
