Patent · US Active

Inkjet printhead with variable drive pulse

US8011748B2 · kind B2 · utility

9Cited by

4References

4Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

Angus John North · Sydney, AU
Jennifer Mia Fishburn · Sydney, AU
Samuel James Myers · Sydney, AU
Kia Silverbrook · Sydney, AU

Key dates

Filing date	Aug 26, 2009
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Aug 26, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2/14427
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An inkjet printhead with an array of nozzles 26 and corresponding heaters 10 configured for heating printing fluid 20 to nucleate a vapor bubble 12 that ejects a drop 24 of the printing fluid through the nozzle. Drive circuitry 22 generates an electrical drive pulse to energize the heaters 10 and is configured to adjust the drive pulse power to vary the vapor bubble nucleation time. By varying the power of the pulse used to generate the bubble, the printhead can operate with small, efficiently generated bubbles during normal printing, or it can briefly operate with large high energy bubbles if it needs to recover decapped nozzles.

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