Printing head substrate, ink jet printing head and ink jet...

Details Printing head substrate, ink jet printing head and ink jet... Printing head substrate, ink jet printing head and ink jet...

2009-06-08

2011-12-06

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000, C347S057000

Reexamination Certificate

active

08070263

ABSTRACT:
There are provided a printing head substrate, an ink jet printing head and an ink jet printing apparatus, which accurately detect a temperature state in the central part of a heater array on the substrate and restrict an area of the substrate to a minimum. A printing head substrate has a plurality of heating elements, a plurality of ink supply openings, a logic circuit for driving the heating elements; a substrate temperature detecting element for detecting a temperature of the printing head substrate, and input and output pads for carrying out reception and supply of a signal between a printing apparatus, and the logic circuit and the substrate temperature detecting element, wherein a beam integral with the substrate is provided between the plurality of ink supply openings, and the substrate temperature detecting element is arranged on the beam.

REFERENCES:
patent: 5175565 (1992-12-01), Ishinaga et al.
patent: 6557983 (2003-05-01), Inoue
patent: 6945629 (2005-09-01), Yamaguchi et al.
patent: 2005/0179745 (2005-08-01), Yamaguchi et al.
patent: 02-258266 (1990-10-01), None
patent: 2004-050637 (2004-02-01), None

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