FYI....I found this site that has templates for making printable line follower track (prints on my PC printer). It works very nicely with my line follower robocar using the OPTEK OPB606A IR SENSORS mounted about 1/4 inch above the track..
http://robotsquare.com/2012/11/28/line-following/
JimS
http://robotsquare.com/2012/11/28/line-following/
JimS