Method of printing data on sheet

Incremental printing of symbolic information – Thermal marking apparatus or processes

Reexamination Certificate

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Reexamination Certificate

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06927787

ABSTRACT:
A system for printing data on sheets, which can solve the problem of the waste of paper resources and also improve the printing speed. The second data is printed as background on an area of printing the first data in a mode that the first and second data can be visually discriminated from each other. The sheets are either receipts or train tickets or airplane tickets or entrance tickets. The mode permitting the visual discrimination is one based on density gradation printing. The printing is performed by a thermal printer. The mode permitting the visual discrimination is one based on the difference in density.

REFERENCES:
patent: 5198836 (1993-03-01), Saito et al.
patent: 5890820 (1999-04-01), Handa
patent: 6222570 (2001-04-01), Takayama et al.
patent: 6351275 (2002-02-01), Ayling et al.
patent: 6682239 (2004-01-01), Mori et al.
patent: 9-226184 (1997-09-01), None

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