Head cartridge, printhead, and substrate having downsized...

Details Head cartridge, printhead, and substrate having downsized... Head cartridge, printhead, and substrate having downsized...

2011-01-11

2011-01-11

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S012000

Reexamination Certificate

active

07866798

ABSTRACT:
The following arrangement is added to a head substrate including a plurality of electrothermal transducers, a plurality of switching elements which drive the plurality of electrothermal transducers, and a logic circuit which drives the plurality of switching elements. That is, the head substrate includes a plurality of level converters which correspond to the respective switching elements, and apply a voltage obtained by boosting a logic voltage. Further, the head substrate includes a bias circuit which applies a bias voltage lower than the boosted voltage to the plurality of level converters.

REFERENCES:
patent: 6290334 (2001-09-01), Ishinaga et al.
patent: 6302504 (2001-10-01), Imanaka et al.
patent: 7317346 (2008-01-01), Chu et al.
patent: 2002/0011889 (2002-01-01), Takenaka
patent: 2003/0090546 (2003-05-01), Mochizuki et al.
patent: 2004/0160258 (2004-08-01), Tobita
patent: 2006/0139412 (2006-06-01), Sakurai et al.
patent: 2008/0129790 (2008-06-01), Kasai
patent: 2009/0135229 (2009-05-01), Kurokawa et al.
patent: 2005-169868 (2005-06-01), None

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