Printing apparatus

Incremental printing of symbolic information – Thermal marking apparatus or processes – Density control

Reexamination Certificate

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Details

C347S190000

Reexamination Certificate

active

08035672

ABSTRACT:
A printing apparatus includes a thermal head in which a plurality of heating elements are provided in a width direction of paper, an analyzing unit which analyzes whether an input print layout contains any bar code, a calculating unit which calculates a print ratio of a bar code portion in the paper for each line of the print layout in the case where the analyzing unit analyzes that at least the print layout contains a bar code, a setting unit which sets a printing velocity corresponding to the print ratio for one line in the bar code portion calculated by the calculating unit in the case where the analyzing unit analyzes that the print layout contains the bar code and a changing unit which changes a velocity at which the thermal head performs printing on the paper for one line to the printing velocity set by the setting unit.

REFERENCES:
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patent: 6236752 (2001-05-01), Katayama et al.
patent: 2009/0309948 (2009-12-01), Matsuda et al.
patent: 2009/0309950 (2009-12-01), Matsuda
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patent: 07-25073 (1995-01-01), None
patent: 2005219382 (2005-08-01), None
patent: 2007030263 (2007-02-01), None
European Search Report for 09007359.4 mailed on Sep. 30, 2009.

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