I know this may seem basic, but it comes up almost every day, and it is something that can be overlooked. Most sublimation papers have a bright white and an off white side. You will need to print on the bright white side. Be aware of how your printer feeds paper. Some that feed from the back use gravity to feed the paper, and you will need to have the bright white facing you. The Epson 1400 printer feeds this way. The Ricoh printers feed from the bottom, and flips the paper, so you need to load the tray with the bright side down. The exception is that if you are using a bypass tray on the 7000, the paper in that tray feed by gravity, and the bright white side should be facing you.
The Bright Side
January 17, 2011
Another type of sublimation paper is Textprint paper, and it can be hard to determine the coated side of the paper. A trick I learned a long time ago, when I first got into sublimation, was that if you rub a coin across a corner of the paper, the printable side will show a black mark where the coin scratches it.