The MJB4 contact aligner can be used for Topside Alignment and Backside Infrared Alignment on substrate sizes ranging 5mm square to 100 mm in diameter. It is capable of printing 0.7 um lines and spaces with a 365 - 436 nm light source. This contact aligner has 5 exposure modes: Soft Contact, Hard Contact, Vacuum Contact, Soft Vacuum Contact and Gap Exposure. Alignment travel range for X and Y is +/- 5 mm and 5 degrees for theta.