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US 6,469,725 B1Granted
Thermal printhead
AssigneeRohm Co., Ltd.
InventorTakaya Nagahata
Life of this patent
Estimating the term…
Abstract
A thermal printhead includes a plurality of heating elements (6) heated by a head voltage for printing on a recording paper, and a plurality of drive IC's (3) powered by a logic voltage for driving the heating elements (6). The printing is performed at whatever value of the head voltage within a range from 2.7 volts through 8.5 volts. Further, the drive IC's (3) operate at whatever value of the logic voltage within a range from 2.7 volts through 5.5 volts.
Claims8
A thermal printhead comprising:
- a plurality of heating elements heated by a head voltage for printing on a recording paper;
- a plurality of drive IC's powered by a logic voltage for driving the heating elements;
- means for causing the heating elements to perform the printing even if the head voltage varies within a range from 2.7 volts through 8.5 volts;
- and
- means for causing the drive IC's operate even if the logic voltage varies within a range from 2.7 volts through 5.5 volts.
2 more elements
A printer comprising:
- power supply means;
- a thermal printhead including a plurality of heating elements heated by a head voltage for printing on a recording paper, and a plurality of drive IC's powered by a logic voltage for driving the heating elements;
- means for causing the heating elements to perform the printing even if the head voltage varies within a range from 2.7 volts through 8.5 volts;
- and
- means for causing the drive IC's operate even if the logic voltage varies within a range from 2.7 volts through 5.5 volts.
2 more elements
Dependencies are inferred from the claim text.