Patent · US Active

Printhead integrated circuit with an ink ejecting surface

US7568790B2 · kind B2 · utility

21Cited by

40References

7Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

Kia Silverbrook · Sydney, AU
Gregory John McAvoy · Sydney, AU

Key dates

Filing date	Dec 12, 2007
Grant date	Aug 4, 2009
Priority date	—
Expiry date	Dec 12, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49401
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Provided is a printhead integrated circuit defining an external surface having a number of ink ejection ports operatively directed at a printing medium. The surface includes a plurality of petal formations radially positioned about each ink ejection port, and a plurality of actuators, each located behind a petal formation distal from said port. The surface also includes a plurality of heater structures each connected to an actuator, so that heating of the structures via an electrical current produces expansion in said actuators which urges the formations into a chamber below the surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.