Patent · US Active

Temperature regulated inkjet printhead

US7669956B2 · kind B2 · utility

7Cited by

4References

7Claims

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 which has 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 sets the duration of the pulse profile to a sub ejection value for any of the nozzles in the row that are not to eject a drop during that firing sequence.

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