Ink jet head and ink jet printer

Details Ink jet head and ink jet printer Ink jet head and ink jet printer

2006-01-03

2006-01-03

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

06981760

ABSTRACT:
There is provided an ink jet head for ejecting an ink liquid drop from an ink jet nozzle onto a recording medium, wherein, on a substrate having a heat conductivity of 15 (W/m/K) or less, a heat-transfer layer having a thickness of 10 μm or more is formed, and a heat insulating layer is adjacently formed on top of the heat-transfer layer; and a heat generating heater, which has a thin film resistor for boiling a part of ink to generate a bubble and allow the ink liquid drop to be ejected from the ink jet nozzle by an expansion of the bubble and a thin film conductive electrode for supplying a current to the thin film resistor, is adjacently formed on top of the heat insulating layer. There is also provided an ink jet printer using the above ink jet head. The ink jet head and the ink jet printer as above make it possible to suppress the temperature elevation around the heat generating heater and yet enhance the printing speed upon the printing even if the ink liquid drop is continuously ejected.

REFERENCES:
patent: 4336548 (1982-06-01), Matsumoto
patent: 4686544 (1987-08-01), Ikeda et al.
patent: 5252988 (1993-10-01), Katayama et al.
patent: 6341848 (2002-01-01), Shade et al.
patent: 2001-191529 (2001-07-01), None

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