Patent · US Active

Inkjet printhead with temperature zones

US7669955B2 · kind B2 · utility

3Cited by

4References

9Claims

0Family size

Assignee

Silverbrook Research Pty Ltd · AU

Inventors

John Robert Sheahan · Sydney, AU
Mark Jackson Pulver · Sydney, AU
Brian Christopher Morahan · Sydney, AU
Alireza Moini · Sydney, AU
Timothy Peter Gillespie · Sydney, AU
Michael John Webb · Sydney, AU
Kia Silverbrook · Sydney, AU

Key dates

Filing date	Jul 22, 2008
Grant date	Mar 2, 2010
Priority date	—
Expiry date	Jul 22, 2028

Classification

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

Abstract

A printhead IC is provided having an array of nozzles, drive circuitry for receiving print data and sending drive pulses of electrical energy to the array of nozzles in accordance with the print data, and a temperature sensor connected to the drive circuitry to adjust the drive pulse profile in response to the temperature sensor output. During use, the temperature sensor can be de-activated after a period of use. The drive circuitry is programmed with a series of temperature thresholds defining a set of temperature zones, each of the zones having a different pulse profile for the drive pulses sent to the nozzles in the region currently operating in that temperature zone.

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