Patents Assigned to Lexmark International, Inc.
  • Patent number: 10289014
    Abstract: A method of preparing an organic photoconductor drum having a protective overcoat on its outermost surface is provided. In an example embodiment, a photoconductor drum having an electrically conductive substrate, a charge generation layer, a charge transport layer and an outermost protective overcoat layer is provided. The photoconductor drum is cured using a two-step process. The first curing step applies either ionizing irradiation, such as with an electron beam or by gamma rays or applies non-ionizing irradiation such as ultraviolet light to the photoconductor drum. A mask is sized and placed over the print area of the initially cured photoconductor drum, thereby exposing the outermost edges of the photoconductor drum. The outer edges of the masked photoconductor drum is then exposed to a second curing step using ultraviolet light irradiation.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 14, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, Mark Thomas Bellino, Rudolph Wayne Hrobsky
  • Patent number: 10289013
    Abstract: A method of curing a protective overcoat layer on the outermost portion of an organic photoconductor drum using dual curing process is provided. The first curing step applies either ionizing irradiation, such as with an electron beam or by gamma rays or applies non-ionizing irradiation such as ultraviolet light to the overcoated photoconductor drum. A mask or shield is sized to be placed over the print area of the initially cured photoconductor drum, thereby exposing the outermost edges of the photoconductor drum. The outer edges of the masked photoconductor drum is then exposed to a second curing step using non-ionizing irradiation such as ultraviolet light.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 14, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Weimei Luo, Mark Thomas Bellino, Rudolph Wayne Hrobsky
  • Patent number: 10289024
    Abstract: A method for estimating an amount of toner remaining in a reservoir of a replaceable unit for an image forming device according to one example embodiment includes receiving by processing circuitry pulses from a magnetic sensor. Each pulse is indicative that the magnetic sensor detected a magnet on a moving paddle positioned in the reservoir. The processing circuitry counts the number of the pulses received from the magnetic sensor. Upon receiving a request from a controller of the image forming device, the processing circuitry sends to the controller of the image forming device the count of the pulses received from the magnetic sensor and resets the count of the pulses received from the magnetic sensor.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: May 14, 2019
    Assignee: Lexmark International, Inc.
    Inventors: Michael Craig Leemhuis, Jeffrey Allen Abler, Charles Alan Bast, Todd Alan Dutton, David Anthony Schneider
  • Patent number: 10282721
    Abstract: A system for verifying a price associated with an item in a retail environment includes a price tag having an optical member that includes an optical characteristic that modifies an amount of optical energy that leaves the optical member relative to an amount of optical energy received by the optical member, and a price tag holder including an optical sensor having an emitter and a detector. The emitter is positioned to emit optical energy onto the optical member and the detector is positioned to receive optical energy leaving the optical member. A computing device in operable communication with the optical sensor is operative to determine whether the price tag is accurate based upon a comparison between the amount of optical energy received by the detector and the amount of optical energy emitted by the emitter.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: May 7, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: John Douglas Anderson, Christopher Michael Nelson, Adam Randal Wiedemann
  • Patent number: 10281851
    Abstract: An imaging device has a drive gear assembly which operatively engages with a backup roll gear of a fuser assembly when the fuser assembly is inserted into the imaging device. Such engagement causes the drive gear assembly to rotate, and in turn rotates a drive motor coupled to the drive gear assembly. The drive motor includes Hall Effect sensors associated with a sensor arrangement that senses rotation of the motor. During rotation of the drive motor, sensor signals are transmitted to a controller of the imaging device, the controller counting rising and falling signal edges of the received sensor signals. Based on the number of rising and falling signal edges, a message is sent to a user of the imaging device whether or not the installation of the fuser assembly was successful.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: May 7, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Daniel Lee Carter, Mark Stephen Malone, Brian Anthony Reichert
  • Patent number: 10274876
    Abstract: A fusing apparatus includes a substrate having a first surface and a second surface, the second surface being opposite the first surface on the substrate, a first resistive trace and a second resistive trace, the first and second resistive traces being disposed adjacent each other along the first surface of the substrate in a length-wise direction thereof. A resistance of the first resistive trace is less than a resistance of the second resistive trace.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 30, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jichang Cao, Alexander Johannes Geyling, Russell Edward Lucas
  • Patent number: 10274724
    Abstract: A collimation assembly includes a body, at least four light sources, and at least four collimation lenses. The body has inner surfaces that define at least four hollow portions extending through the body between opposed first and second sides thereof, each hollow portion having opposed first and second openings at the first and second sides of the body, respectively. Each light source is disposed at the first opening of one of the at least four hollow portions and controllable to emit a light beam therethrough. Each collimation lens is disposed at the second opening of one of the at least four hollow portions to receive the light beam emitted by the light source disposed at the first opening and diverge the light beam as the light beam passes through the collimation lens. The at least four light sources and the at least four collimation lenses are supported by the body.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: April 30, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
  • Patent number: 10264158
    Abstract: A method for retiring a RFID copy sheet using an imaging device having a scanner system and a printer system, each system having a RFID reader programmer. The RFID copy sheet to be retired is scanned using one of the RFID reader programmers. After determining that the user is authorized to retire the RFID copy sheet, the RFID copy sheet is rescanned by a RFID reader programmer and its associated RFID tag is reprogrammed to indicate that the RFID copy sheet is retired. Document control of the retired RFID copy sheet may also be provided using a document lifecycle database that is updated with the retired status of the RFID copy sheet.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: April 16, 2019
    Assignee: Lexmark International, Inc.
    Inventors: Robert McAlister Whitesell, Brandon Christopher Reynolds, Donnie Eugene Proffitt, Jeremy Keith Payne
  • Patent number: 10248062
    Abstract: An electrophotographic imaging device having a method of printing which includes setting a default toner density for printing; developing a first toned image having the default toner density; printing the first toned image on a first page of a print job; and before printing a second page of a print job, determining whether a duty cycle state of a photoconductive member in the imaging device has changed, and upon a positive determination, developing a second toned image having a toner density derived from the default toner density and printing the second toned image on the second page.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: April 2, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Douglas Anthony Able, Michael Brian Bacalieri, Andrew Gil MontaƱo Desabelle, Gary Scott Overall, Marvin Aliviado Rodriguez
  • Patent number: 10248048
    Abstract: An electrophotographic image forming device includes a replaceable unit having a housing that includes a top, a bottom, a front, and a rear positioned between a first side and a second side of the housing. The housing has a reservoir for storing toner. A rotatable shaft is positioned within the reservoir and has an axis of rotation. A magnet in the reservoir is movable in response to rotation of the shaft. An engagement member is positioned on an exterior of the top of the housing. The engagement member is aligned with a point in a path of movement of the magnet in the reservoir. The engagement member has a front surface that is unobstructed to contact and push a housing in the image forming device supporting a magnetic sensor to an operating position of the magnetic sensor during insertion of the replaceable unit into the image forming device.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: April 2, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventor: Brian Scott Carpenter
  • Patent number: 10228636
    Abstract: A toner container according to one example embodiment includes a housing having a reservoir for storing toner and a drive shaft positioned in the reservoir. The drive shaft is rotatable about a rotational axis in an operative rotational direction. A toner agitator extends from the drive shaft in the reservoir. The toner agitator is rotatable around the rotational axis of the drive shaft as the drive shaft rotates. The toner agitator folds relative to the drive shaft counter to the operative rotational direction if resistance to rotation of the toner agitator provided by toner in the reservoir exceeds a threshold amount. The toner agitator is biased relative to the drive shaft in the operative rotational direction. A radial length of the toner agitator decreases when the toner agitator folds relative to the drive shaft counter to the operative rotational direction.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: March 12, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventor: Michael Craig Leemhuis
  • Patent number: 10222740
    Abstract: A toner cartridge according to one embodiment includes a housing having first and second alignment guides that extend outward from a first side and a second side of the housing, respectively, and that run along a front-to-rear dimension of the housing. Third and fourth alignment guides extend outward from the first side of the housing. The third alignment guide is spaced toward the front of the housing from the fourth alignment guide. Bottom surfaces of the third and fourth alignment guides are unobstructed to sit on top of a corresponding guide surface in an image forming device to control a vertical position of the toner cartridge in the image forming device. The bottom surfaces of the third and fourth alignment guides are aligned with each other in a vertical dimension of the housing and are positioned higher than the first and second alignment guides.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 5, 2019
    Assignee: Lexmark International, Inc.
    Inventors: Jason Paul Hale, Kyle Bradley Martin, Jeremy Keith Payne, Matthew Lee Rogers, Edward Lynn Triplett
  • Patent number: 10223716
    Abstract: A method of charging a customer for using a software program product that processes one or more documents that includes receiving, by a tracking server from at least one client application, information relating to a processing of a document using the software program product; determining if the information indicates a successful processing of the document; and upon positive determination, charging the customer with an amount for the successful processing of the document using the software program product.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 5, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Sterling Anson Moore, Norman Erik Stang
  • Patent number: 10222738
    Abstract: A replaceable unit for an electrophotographic image forming device according to one example embodiment includes an electrical contact positioned on a first side of a housing of the replaceable unit for contacting an electrical contact in the image forming device. A guide on the first side of the housing is positioned closer to a front of the housing than the electrical contact and leads rearward toward the electrical contact. The guide includes an inside surface that faces inward sideways toward a second side of the housing. At least a portion of the inside surface is angled inward sideways from front to rear permitting contact between the inside surface and an electrical connector in the image forming device to draw the electrical connector in the image forming device inward sideways relative to the replaceable unit during insertion of the replaceable unit into the image forming device.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: March 5, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jeremy Keith Payne, Edward Lynn Triplett
  • Patent number: 10216141
    Abstract: An imaging device having a fuser and print engine architecture that enables complete interchangeability between fuser types with a common print engine. The imaging device has a frame configured to separately receive a first fuser assembly of a first fuser type and a second fuser assembly of a second fuser type different from the first fuser type. The first fuser assembly includes a first fuser frame having a first datum tab. The second fuser assembly includes a second fuser frame having a second datum tab. The frame of the imaging device has a datum aperture that is sized to receive the first datum tab that when inserted into the datum aperture, causes the first fuser assembly to be positioned at a first operative position, and the second datum tab that when inserted into the datum aperture, causes the second fuser assembly to be positioned at a second operative position.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: February 26, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Karen Elaine Ballman, Patrick Wayne Carr, Jr., Gregory Daniel Creteau, Clark Edward Jarnagin, Donald Eugene Proffitt, Edward Alan Rush, Edward Lynn Triplett
  • Patent number: D841730
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: February 26, 2019
    Assignee: Lexmark International, Inc.
    Inventors: James Daniel Anderson, Jr., Masahito Cho, Jason Paul Hale, Kyle Bradley Martin, Robert Watson McAlpine, Jeremy Keith Payne, Matthew Lee Rogers
  • Patent number: D842864
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: March 12, 2019
    Assignee: Lexmark International, Inc.
    Inventors: Charles Ruel Gutierrez Novabos, Shane Daffodil Lorio Alfaro, Alexander Campos Gocotano
  • Patent number: D842865
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: March 12, 2019
    Assignee: Lexmark International, Inc.
    Inventors: Charles Ruel Gutierrez Novabos, Shane Daffodil Lorio Alfaro, Alexander Campos Gocotano
  • Patent number: D844050
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: March 26, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Karl Michael Rodrigo Dela Cruz, Alexander Campos Gocotano, Scott Allan Kendall, Neilson Gutay Navarrete, Charles Ruel Gutierrez Novabos
  • Patent number: D844051
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: March 26, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Karl Michael Rodrigo Dela Cruz, Alexander Campos Gocotano, Scott Allan Kendall, Neilson Gutay Navarrete, Charles Ruel Gutierrez Novabos