Printer device and method for printing deviation test patterns to measure deviations of printing positions
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United States of America Patent
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Nov 3, 1998
Grant Date -
N/A
app pub date -
Mar 28, 1996
filing date -
Mar 30, 1995
priority date (Note) -
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Abstract
A deviation test pattern includes a reference scale printed by one reference printing unit among a plurality of printing units arranged to print overlaid images of yellow, magenta, cyan and black. The reference scale has a plurality of scale bars arranged in a main-scanning direction at a pitch of 30 dots. Particularly, the deviation test pattern further includes a difference scale printed adjacent to and in parallel to the reference scale by a printing unit other than the reference printing unit. The difference scale has a plurality of scale bars arranged in the main-scanning direction at a pitch of 29 dots (or 31 dots).
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