Patent ID: 9533513
Date: 2017-01-03
CPC Classifications: B41J

Claim:
1. A bidirectional scanning print system comprising: a print mechanism to print in first and second directions along a print axis; and a print alignment test controller to: instruct the print mechanism to print a first swathe on a print substrate in the first direction; and instruct the print mechanism to print a second swathe adjacent to the first swathe on the print substrate in the second direction, wherein the first and second swathes respectively comprise first and second portions of a Vernier scale pattern, and wherein each swathe of the first and second swathes comprises a plurality of printed blocks aligned along the print axis, each block of the plurality of printed blocks in the first swathe being of a first width, the plurality of printed blocks in the first swathe being separated by unprinted sections each of a second width, the first width being greater than the second width.