Patents by Inventor Randall Lee Hudson
Randall Lee Hudson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10274724Abstract: 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: GrantFiled: December 13, 2016Date of Patent: April 30, 2019Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Patent number: 10095175Abstract: A developer roll includes end seal regions subject to accumulating residual toner. An adjacent photoconductive member has a longitudinal extent with a central area defining an imaging region and longitudinal ends outside the central area defining non-imaging regions. The photoconductive member has a length extending beyond a length of the developer roll so that the end seal regions of the developer roll contact the non-imaging regions of the photoconductive member. During cleaning, the non-imaging regions become charged and discharged to electrostatically attract and transfer away the toner from the end seal regions. A blade scrapes clean the toner from the photoconductive member.Type: GrantFiled: November 8, 2017Date of Patent: October 9, 2018Assignee: Lexmark International, Inc.Inventors: Brian Scott Carpenter, Randall Lee Hudson, John Lemaster
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Patent number: 9874745Abstract: 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: GrantFiled: December 13, 2016Date of Patent: January 23, 2018Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Patent number: 9664901Abstract: 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: GrantFiled: September 29, 2015Date of Patent: May 30, 2017Assignee: LEXMARK INTERNATIONAL, INC.Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Publication number: 20170090190Abstract: 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: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Publication number: 20170090188Abstract: 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 to least four collimation lenses are supported by the body.Type: ApplicationFiled: September 29, 2015Publication date: March 30, 2017Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Publication number: 20170090189Abstract: 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: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Inventors: Fei Chen, Randall Lee Hudson, Christopher Dane Jones, Jason Lee Rowe
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Patent number: 9423718Abstract: A scan unit for an imaging device having a movable mirror and one or more light sources. A light beam generated by each light source is directed towards the movable mirror, movement of the mirror causing each light beam that is reflected by the mirror to follow a distinct scan pattern. An optical assembly is associated with each reflected light beam to form an optical path for each reflected light beam from the mirror. A housing in which the movable mirror, the one or more light sources and the optical assembly are secured has at least a portion made from electrically conductive material for shielding an interior of the housing from electromagnetic fields external to the housing. A light drive circuitry card is disposed in the interior of the housing and communicatively coupled to the one or more light sources for driving the one or more light sources.Type: GrantFiled: December 31, 2014Date of Patent: August 23, 2016Assignee: Lexmark International, Inc.Inventors: Randall Lee Hudson, Jason Lee Rowe
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Publication number: 20160187804Abstract: A scan unit for an imaging device having a movable minor and one or more light sources. A light beam generated by each light source is directed towards the movable minor, movement of the minor causing each light beam that is reflected by the minor to follow a distinct scan pattern. An optical assembly is associated with each reflected light beam to form an optical path for each reflected light beam from the minor. A housing in which the movable minor, the one or more light sources and the optical assembly are secured has at least a portion made from electrically conductive material for shielding an interior of the housing from electromagnetic fields external to the housing. A light drive circuitry card is disposed in the interior of the housing and communicatively coupled to the one or more light sources for to driving the one or more light sources.Type: ApplicationFiled: December 31, 2014Publication date: June 30, 2016Inventors: Randall Lee Hudson, Jason Lee Rowe
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Patent number: 8780158Abstract: A housing for the scan unit printhead of an imaging device. The housing is substantially bowl shaped having a plurality of mounting surfaces extending inwardly toward a central region of the housing. The housing is constructed from a metal composition. The scan unit includes a plurality of light sources and an optical assembly operatively coupled thereto. The housing mounting surfaces support components of the optical assembly using an adhesive, without additional mounting hardware.Type: GrantFiled: September 30, 2011Date of Patent: July 15, 2014Assignee: Lexmark International, Inc.Inventors: Randall Lee Hudson, Jason Lee Rowe
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Publication number: 20130070041Abstract: A housing for the scan unit printhead of an imaging device. The housing is substantially bowl shaped having a plurality of mounting surfaces extending inwardly toward a central region of the housing. The housing is constructed from a metal composition. The scan unit includes a plurality of light sources and an optical assembly operatively coupled thereto. The housing mounting surfaces support components of the optical assembly using an adhesive, without additional mounting hardware.Type: ApplicationFiled: September 30, 2011Publication date: March 21, 2013Inventors: Randall Lee Hudson, Jason Lee Rowe
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Patent number: 8319813Abstract: A mounting assembly, for mounting a reflection mirror within a laser scanning unit, includes a mounting structure, and a pair of urging members. The mounting structure includes a base member, and a first pair of support protrusions and a second pair of support protrusions configured on the base member. Each of the first pair of support protrusions and the second pair of support protrusions includes a first support protrusion having a first top surface, and a second support protrusion having a second top surface. The first support protrusion is capable of supporting an end portion of the reflection mirror on the first top surface. Each urging member of the pair of urging members is adapted to be secured over the second top surface of the second support protrusion for urging the end portion of the reflection mirror on the first support protrusion.Type: GrantFiled: August 3, 2009Date of Patent: November 27, 2012Assignee: Lexmark International Inc.Inventors: Randall Lee Hudson, Louis Anthony Wantland
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Publication number: 20110025815Abstract: A mounting assembly, for mounting a reflection mirror within a laser scanning unit, includes a mounting structure, and a pair of urging members. The mounting structure includes a base member, and a first pair of support protrusions and a second pair of support protrusions configured on the base member. Each of the first pair of support protrusions and the second pair of support protrusions includes a first support protrusion having a first top surface, and a second support protrusion having a second top surface. The first support protrusion is capable of supporting an end portion of the reflection mirror on the first top surface. Each urging member of the pair of urging members is adapted to be secured over the second top surface of the second support protrusion for urging the end portion of the reflection mirror on the first support protrusion.Type: ApplicationFiled: August 3, 2009Publication date: February 3, 2011Inventors: Randall Lee Hudson, Louis Anthony Wantland