Patent · US Active

Printhead with individual nozzle firing frequency at least once per decap time

US8272708B2 · kind B2 · utility

12Cited by

9References

17Claims

0Family size

Assignee

Zamtec Ltd · IE

Inventors

Kia Silverbrook · Sydney, AU
Simon Robert Walmsley · Sydney, AU
Angus John North · Sydney, AU
Gregory John McAvoy · Sydney, AU

Key dates

Filing date	Oct 20, 2009
Grant date	Sep 25, 2012
Priority date	—
Expiry date	Oct 20, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2202/20
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An inkjet printhead has nozzles and respective heater elements. A print engine controller actuates the heater elements to eject ink through the corresponding nozzle. During use, the print engine controller actuates each of the heater elements at least once every decap time. The decap time is a predetermined time period in which the viscosity of the ejectable liquid at the nozzle increases to a threshold, at which ejection fails and the nozzle clogs.

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