Inventor

SHEAHAN JOHN ROBERT

AU95 patents

⚠️ This page may combine multiple inventors who share the name “SHEAHAN JOHN ROBERT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHEAHAN JOHN ROBERT

SILVERBROOK RES PTY LTD

Printhead having sequenced nozzle firing

Printhead IC with nozzle array for linking with adjacent printhead IC&#39;s

Printhead module for expelling ink from nozzles in groups, alternately, starting at outside nozzles of each group

Printhead module having a communication input for data and control

Printer controller for supplying data to one or more printheads via serial links

Printer controller for supplying data to a printhead module having one or more redundant nozzle rows

Printer controller for supplying dot data to at least one printhead module having faulty nozzle

Inkjet printhead having modules with displaced inkjet rows

Printhead module having a dropped row

Printer comprising two uneven printhead modules and at least two printer controllers, one which spends print data to the other

Printhead module having nozzle redundancy for faulty nozzle tolerance

Inkjet printer having printhead with multiple controllers

Printhead having grouped nozzle firing

Printer controller for controlling a printhead module based on thermal sensing

Printer controller for causing expulsion of ink from nozzles in groups, starting at outside nozzles of groups

Printhead module having horizontally grouped firing order

Printer controller for nozzle displacement correction

Method of expelling ink from nozzles in groups, alternately, starting at outside nozzles of each group

Printer controller for at least partially compensating for erroneous rotational displacement

Method for at least partially compensating for errors in ink dot placement due to erroneous rotational displacement

Printer comprising a printhead and at least two printer controllers connected to a common input of the printhead

Method of manufacturing left-handed and right-handed printhead modules

Printhead comprising different printhead modules

Printer comprising two uneven printhead modules and at least two printer controllers, one of which sends print data to both of the printhead modules

Printhead having printhead modules vertically offset at join region

Printhead integrated circuit with open actuator test

Temperature regulated inkjet printhead

Inkjet printhead integrated circuit

Method of operating a thermal bend actuator

Thermal inkjet printhead with de-clog firing mode

Printhead IC with de-activatable temperature sensor and maintenance mode

Printhead IC compatible with mutally incompatible print engine controllers

Printhead IC with de-activatable temperature sensor

Printer controller for controlling a printhead with horizontally grouped firing order

Printer controller for supplying data to a printhead module having interleaved shift registers

Printer system having controller with correction for nozzle displacement

Printer comprising two printhead modules and at least two printer controllers

Printhead IC with clock recovery circuit

Printer with rotated ejection nozzle correction

Inkjet printer having nozzle displacement correction

Inkjet printer having controller for correcting displaced inkjet nozzles

Printer controller for supplying data to a printhead module having a dropped row

Inkjet printhead with temperature zones

Printhead module having operation controllable on basis of thermal sensors

Symmetric nozzle arrangement

Printhead having first and second rows of print nozzles

Printhead IC with staggered nozzle firing pulses

Printer having printhead with multiple controllers

SHEAHAN JOHN ROBERT

Printhead integrated circuit with thermally sensing heater elements

KIA SILVERBROOK

Apparatus for testing integrated circuitry

Printhead IC with nozzle array for linking with adjacent printhead IC's