Printer device and method for printing deviation test patterns t

Details Printer device and method for printing deviation test patterns t Printer device and method for printing deviation test patterns t

1996-03-28

1998-11-03

Tso, Edward

Incremental printing of symbolic information

Thermal marking apparatus or processes

B41J 2315, B41J 232

Patent

active

058316582

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).

REFERENCES:
patent: 4685702 (1987-08-01), Kazuharu
patent: 5059984 (1991-10-01), Moore et al.
patent: 5069556 (1991-12-01), Sasaki et al.
patent: 5207516 (1993-05-01), Suzuki

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