Hi,
The texture is in essence a 2D image mapped onto the coordinates of the 3D mesh.
First realize that to 3D print texture you need a very advanced 3D printer. These work with .obj or vrml files, meshlab can do the proper file conversions.
If you are planning to only print the occassional object, I recommend getting a consumer-level printer and hand painting and finishing with XTC3D.
Which printer are you planning to buy?