Inventor

WILLIAMSON RANDAL SCOTT

US65 patents

Patents

50 patents

US9563169B1Feb 7, 2017

Replaceable unit for an electrophotographic image forming device having a retractable electrical connector

LEXMARK INT INC34 citations98

USD759154SJun 14, 2016

Toner system for an image forming device including a toner cartridge having a shutter with bypassing actuation

LEXMARK INT INC12 citations92

US7500732B2Mar 10, 2009

Maintenance and docking station for a hand-held printer

LEXMARK INT INC31 citations86

US10527967B1Jan 7, 2020

Toner container having a common input gear for a toner agitator assembly and an encoded member

LEXMARK INT INC11 citations85

US10775737B1Sep 15, 2020

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

LEXMARK INT INC5 citations84

US10649399B1May 12, 2020

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

LEXMARK INT INC9 citations84

US10527969B1Jan 7, 2020

Drive actuation of a toner agitator assembly and an encoded member of a toner container in an electrophotographic image forming device

LEXMARK INT INC10 citations84

US10203628B1Feb 12, 2019

Toner agitator assembly

LEXMARK INT INC11 citations84

US9971295B2May 15, 2018

Electrophotographic image forming device having a replaceable unit that includes a retractable electrical connector

LEXMARK INT INC7 citations84

US9746815B2Aug 29, 2017

Replaceable unit for an electrophotographic image forming device having a retractable electrical connector

LEXMARK INT INC8 citations84

US9608634B1Mar 28, 2017

Toothed-rack physical unclonable function

LEXMARK INT INC11 citations84

US9316944B2Apr 19, 2016

Toner cartridge having an alignment member for aligning with a developer unit in an electrophotographic image forming device

LEXMARK INT INC11 citations84

US9229367B2Jan 5, 2016

Carriage assembly for toner cartridge loading having a pivotable cradle and a stationary hold-down feature

LEXMARK INT INC7 citations84

US9164425B2Oct 20, 2015

Toner cartridge having loading and latching features

LEXMARK INT INC11 citations84

US9152083B2Oct 6, 2015

Carriage assembly for toner cartridge loading and latching

LEXMARK INT INC7 citations84

US9104141B2Aug 11, 2015

Toner cartridge having a shutter with bypassing actuation

LEXMARK INT INC10 citations84

US7131644B2Nov 7, 2006

Imaging apparatus having an automatic sheet feeder

LEXMARK INT INC12 citations84

US9608828B1Mar 28, 2017

Elongated physical unclonable function

LEXMARK INT INC9 citations83

US7604320B2Oct 20, 2009

Maintenance on a hand-held printer

LEXMARK INT INC13 citations83

US6637859B2Oct 28, 2003

Ink jet mist control system

LEXMARK INT INC13 citations82

US7524051B2Apr 28, 2009

Hand-operated printer having a user interface

LEXMARK INT INC8 citations79

US11720048B2Aug 8, 2023

Toner cartridge latching

LEXMARK INT INC2 citations73

US11347180B2May 31, 2022

Shipping or storage separator for replaceable units of an electrophotographic image forming device

LEXMARK INT INC2 citations73

US11287770B2Mar 29, 2022

Toner cartridge latching

LEXMARK INT INC2 citations73

US11221568B2Jan 11, 2022

Toner container having a common input gear for a toner agitator assembly and an encoded member

LEXMARK INT INC1 citations73

US11175621B2Nov 16, 2021

Replaceable units of an electrophotographic image forming device having a shipping or storage separator

LEXMARK INT INC1 citations73

US11137699B1Oct 5, 2021

Toner container having a reduced auger flight to accommodate bi-directional rotation of the auger

LEXMARK INT INC6 citations73

US11022909B2Jun 1, 2021

Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member

LEXMARK INT INC2 citations73

US11022910B2Jun 1, 2021

Sensor positioning by a replaceable unit of an image forming device

LEXMARK INT INC3 citations73

US10859944B2Dec 8, 2020

Toner container having a common input gear for a toner agitator assembly and an encoded member

LEXMARK INT INC2 citations73

USRE47166EDec 18, 2018

Toner cartridge having loading and latching features

LEXMARK INT INC2 citations73

US6644779B2Nov 11, 2003

Rotating waste ink accumulation system

LEXMARK INT INC7 citations73

US8348397B2Jan 8, 2013

Fluid height backpressure device in a system for supplying fluid to a printhead

LEXMARK INT INC5 citations71

US10921393B2Feb 16, 2021

Magnetometer chip sensor array for reading a magnetic PUF, including a magnetic PUF film or tape, and systems incorporating the reader

LEXMARK INT INC4 citations70

US12181827B2Dec 31, 2024

Toner cartridge latching

LEXMARK INT INC0 citations63

US11520282B2Dec 6, 2022

Replaceable units of an electrophotographic image forming device having a shipping or storage separator

LEXMARK INT INC0 citations63

US11353824B2Jun 7, 2022

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

LEXMARK INT INC0 citations63

US11119443B2Sep 14, 2021

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

LEXMARK INT INC0 citations63

US9983508B2May 29, 2018

Image forming device having a replaceable toner cartridge that includes an engagement member for actuating a shutter

LEXMARK INT INC1 citations63

US7661791B2Feb 16, 2010

Apparatus and method for performing mechanical printhead alignment in an imaging apparatus

LEXMARK INT INC2 citations63

US11681243B2Jun 20, 2023

Sealing assembly for an electrophotographic image forming device

LEXMARK INT INC0 citations62

US11656561B2May 23, 2023

Toner container having a common input gear for a toner agitator assembly and an encoded member

LEXMARK INT INC0 citations62

US11385566B2Jul 12, 2022

Sensor positioning by a replaceable unit of an image forming device

LEXMARK INT INC0 citations62

US11378897B2Jul 5, 2022

Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member

LEXMARK INT INC0 citations62

USD955472SJun 21, 2022

Toner cartridge

LEXMARK INT INC0 citations62

USD936138SNov 16, 2021

Toner cartridge

LEXMARK INT INC0 citations62

Showing the top 50 of 65 patents by PatentIndex Score.

WILLIAMSON RANDAL SCOTT

Patents

Replaceable unit for an electrophotographic image forming device having a retractable electrical connector

Laser printer toner cartridge

Laser printer toner cartridge

Laser printer toner cartridge

Laser printer toner cartridge

Toner system for an image forming device including a toner cartridge having a shutter with bypassing actuation

Maintenance and docking station for a hand-held printer

Toner container having a common input gear for a toner agitator assembly and an encoded member

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

Drive actuation of a toner agitator assembly and an encoded member of a toner container in an electrophotographic image forming device

Toner agitator assembly

Electrophotographic image forming device having a replaceable unit that includes a retractable electrical connector

Replaceable unit for an electrophotographic image forming device having a retractable electrical connector

Toothed-rack physical unclonable function

Toner cartridge having an alignment member for aligning with a developer unit in an electrophotographic image forming device

Carriage assembly for toner cartridge loading having a pivotable cradle and a stationary hold-down feature

Toner cartridge having loading and latching features

Carriage assembly for toner cartridge loading and latching

Toner cartridge having a shutter with bypassing actuation

Imaging apparatus having an automatic sheet feeder

Elongated physical unclonable function

Maintenance on a hand-held printer

Ink jet mist control system

Hand-operated printer having a user interface

Toner cartridge latching

Shipping or storage separator for replaceable units of an electrophotographic image forming device

Toner cartridge latching

Toner container having a common input gear for a toner agitator assembly and an encoded member

Replaceable units of an electrophotographic image forming device having a shipping or storage separator

Toner container having a reduced auger flight to accommodate bi-directional rotation of the auger

Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member

Sensor positioning by a replaceable unit of an image forming device

Toner container having a common input gear for a toner agitator assembly and an encoded member

Toner cartridge having loading and latching features

Rotating waste ink accumulation system

Fluid height backpressure device in a system for supplying fluid to a printhead

Magnetometer chip sensor array for reading a magnetic PUF, including a magnetic PUF film or tape, and systems incorporating the reader

Toner cartridge latching

Replaceable units of an electrophotographic image forming device having a shipping or storage separator

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

Replaceable unit for an electrophotographic image forming device having a magnetic sensor

Image forming device having a replaceable toner cartridge that includes an engagement member for actuating a shutter

Apparatus and method for performing mechanical printhead alignment in an imaging apparatus

Sealing assembly for an electrophotographic image forming device

Toner container having a common input gear for a toner agitator assembly and an encoded member

Sensor positioning by a replaceable unit of an image forming device

Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member

Toner cartridge

Toner cartridge