Inkjet printer head

Details Inkjet printer head Inkjet printer head

Filed on

2006-10-10

Date issued

2006-10-10

Examiner

Patel, Vip (Department: 2853)

Patent Class

Incremental printing of symbolic information

SubClass

Ink jet

SubSubClass

Ejector mechanism

Type

Reexamination Certificate

Status

active

Patent number

07118200

Description

ABSTRACT:
The inkjet printer head includes heating elements and ejection nozzles. Each of the heating elements has a heating resistor which is energized by application of an electric current so that a part of ink which is located in proximity to the heating resistor is boiled to form a bubble. The expansion of the formed bubble causes the ink to be ejected as a droplet through each of the ejection nozzles. Each of said heating elements has no protective film disposed between the heating resistor and the ink in which the bubble is to be formed. A thickness of said heating resistor is in a range of from 2 μm to 5 μm.

REFERENCES:
patent: 5966153 (1999-10-01), Mitani et al.
patent: 6354695 (2002-03-01), Kim et al.
patent: 6648732 (2003-11-01), Pugliese et al.
patent: 9-174848 (1997-07-01), None
patent: 2000-168088 (2000-06-01), None

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