An optical alignment system for aligning a multiple gap tape head assembly of a tape drive, including a cartridge plate insertable in a tape drive and having a first surface mirror that is parallel to a reference plane for the drive when the plate is inserted in the drive, a microscope objective imaging...http://www.google.de/patents/US5257091?utm_source=gb-gplus-sharePatent US5257091 - Optical alignment system for aligning a multiple gap tape head assembly
