IP Library › Granted Patent US 7,699,440
Granted Patent B2
US 7,699,440 · App. 12/333,140 · Granted Apr 20, 2010

Inkjet printhead with heater element close to drive circuits

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Quick Facts
Patent No.
US 7,699,440
App. No.
12/333,140
Granted
Apr 20, 2010
Kind
B2
Abstract

A printhead with drive circuitry for a heating element. At least part of the drive circuitry is positioned proximate to and within 60 microns of the heating element. Moving the drive circuitry within 60 microns of the heating element enhances the nozzle packing on the printhead substrate and improves its energy efficiency.

Claims (3)

1. An inkjet drop ejection apparatus comprising: a substrate for supporting an ejection actuator and drive circuitry for providing a drive pulse to the ejection actuator, the ejection actuator having a heating element, wherein at least part of the drive circuitry is positioned between the substrate and the heating element and within 60 microns of the heating element.

2. An inkjet drop ejection apparatus of claim 1 wherein the drive circuitry is positioned between about 1 and 30 microns from the heating element.

3. An inkjet drop ejection apparatus of claim 1 wherein the drive circuitry is positioned about 5 microns from the heating element.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2012
From: SILVERBROOK RESEARCH PTY. LIMITED AND CLAMATE PTY LIMITED
To: ZAMTEC LIMITED
Reel/Frame 028581/0924 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2008
From: SILVERBROOK, KIA
To: SILVERBROOK RESEARCH PTY LTD
Reel/Frame 021974/0571 →