There is an easy way to tell which side of the film you want the ink to go onto.
Wet you fingers and grab the corner of the film. The side that sticks to your fingers is the coated side. This is the side you want the ink to be on.
When loading film into a 1400, 1430, 1100, Artisan 50, 1900, etc load the coated side facing you.
When loading a 4800, 4880, 4900, 7600, etc load the tray with the coated side down.