| 摘要 |
A fiducial system (10) is provided for use during an alignment inspection of first and second adjacent elements (20,30). The fiducial system comprises an inspection opening (34) in the second element (30). It further comprises first and second fiducial portions (50,51) on the first element (20) positioned and sized to provide an accurate indication when viewed through the inspection opening (34) of whether the second element (30) is properly positioned relative to the first element (20) regardless of the size of the inspection opening (34) as long as the opening has a size greater than or equal to a lower limit dimension. The first element (20) may comprise an ink jet printhead heater chip (22) and the second element (30) may comprise an ink jet printhead nozzle plate (32). <IMAGE> |
