Optical Flat for Measuring Tape Wrap Angle
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-30
Optical flats can be used to directly measure the mechanical dimensions of a magnetic head and its relationship to tape guides. The dimensions that can be measured are the gap to the air bearing slots in the head, the gap to the tangent of the tape to the head and the air bearing slots to the tangent of the tape to the head and guide. The measured dimensions can be used to determine the wrap angle of the tape across the head in both the forward and reverse directions of the tape with respect to the head.