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Lexmark International Inc patents


Recent patent applications related to Lexmark International Inc. Lexmark International Inc is listed as an Agent/Assignee. Note: Lexmark International Inc may have other listings under different names/spellings. We're not affiliated with Lexmark International Inc, we're just tracking patents.

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Two step producing triarlyamine compounds having two alkyl alcohols in a single reaction vessel

The present invention provides a simple, cost effective and time saving two step method for synthesizing triarylamines comprising two alkyl alcohols in a single vessel. The resulting triarylamines are synthesized without the need for the usual protection and the deprotection steps. The reaction proceeds in two steps in a single... Lexmark International Inc

Toner formulation and preparing the same

A chemically prepared toner composition made up of a toner particle with a core having a first polymer binder, a monomer free radical polymerization formed core shell styrene acrylic latex having a liquid gel core, a pigment, a wax, and a shell formed around the core including a second polymer... Lexmark International Inc

Toner formulation and preparing the same

A chemically prepared toner composition made up of a toner particle with a core having a first polymer binder, a monomer free radical polymerization formed core shell styrene acrylic latex having a liquid gel core, a pigment, a wax, and a shell formed around the core including a second polymer... Lexmark International Inc

Method and system for controlling a fuser of an electrophotographic imaging device

A system and methods for controlling the fuser heater of an electrophotographic imaging device, including initiating a preheating operation for preheating the fuser heater. Following a temperature of the fuser heater reaching a first predetermined temperature during the preheating operation, heater power is calculated based on a current temperature of... Lexmark International Inc

Method and system for controlling a fuser of an electrophotographic imaging device

A system and methods for controlling the fuser heater of an electrophotographic imaging device, including initiating a preheating operation for preheating the fuser heater. Following a temperature of the fuser heater reaching a first predetermined temperature during the preheating operation, heater power is calculated based on a current temperature of... Lexmark International Inc

Method and system for controlling a fuser of an electrophotographic imaging device

A system and methods for controlling the fuser heater of an electrophotographic imaging device, including initiating a preheating operation for preheating the fuser heater. Following a temperature of the fuser heater reaching a first predetermined temperature during the preheating operation, heater power is calculated based on a current temperature of... Lexmark International Inc

Systems and methods for fuser power control

A method of controlling the temperature of a fuser is disclosed. The fuser is driven with a repeated sequence of half-cycles of an AC line voltage. The sequence contains partial half-cycles and does not have a repeating sequence shorter than twenty half-cycles. The disclosed sequences provide fine granularity of fuser... Lexmark International Inc

Axially shifting a photoconductive drum using a cam

A photoconductor unit for an electrophotographic image forming device according to one example embodiment includes a housing and a photoconductive drum rotatably mounted on the housing. A cam is mounted on the housing and has a cam surface that is positioned to contact a corresponding locating surface. The cam surface... Lexmark International Inc

Axially shifting photoconductive drum

A photoconductor unit for an electrophotographic image forming device according to one example embodiment includes a housing and a photoconductive drum rotatably mounted on the housing. An engagement member is positioned to receive an actuation force from an actuator of the image forming device. Upon receiving the actuation force, the... Lexmark International Inc

Biased lubricant applicator brush in imaging device

In an imaging device having a photoconductive drum and a lubricant applicator brush, methods and apparatus teach application of the lubricant to the drum at a transfer nip and removing undeveloped toner particles. A first voltage is applied to the drum while the brush receives a voltage that switches more... Lexmark International Inc

Rfid tag programming in a duplexer

A method of programming an RFID tag in an image-forming device is disclosed. The RFID tag is programmed while media is paused in a duplex media path. The RFID tag is programmed using an antenna located between a simplex media path and the duplex media path. Other methods and systems... Lexmark International Inc

Removable duplexer tray module for an imaging apparatus

A removable media handling module includes a body that is horizontally slidable into and removable from an imaging apparatus. The media handling module includes a lower media guide extending between a front and a rear of the body. With the media handling module inserted into the imaging apparatus, the lower... Lexmark International Inc

Removable duplexer tray module for an imaging apparatus

A removable media handling module includes a body that is horizontally slidable into and removable from an imaging apparatus. The media handling module includes a lower media guide extending between a front and a rear of the body in a direction of insertion of the body into the imaging apparatus.... Lexmark International Inc

Door-actuated feed roll separator mechanism for an imaging device

An imaging device having a door-actuated feed roll separator mechanism. A pair of opposed panels of a frame of the imaging device are positioned parallel to a media path. A feed roll pair in the media path has a drive roll fixedly and rotatably mounted between the panels and a... Lexmark International Inc

Door-actuated feed roll separator for an imaging device

An imaging device having a door-actuated feed roll separator mechanism. A pair of opposed panels of a frame of the imaging device are positioned parallel to a media path. A feed roll pair in the media path has a drive roll fixedly and rotatably mounted between the panels and a... Lexmark International Inc

Automated lens cleaning and shutter system for an electrophotographic imaging device

An electrophotographic imaging device, including at least one photoconductive member, a printhead unit, at least one shutter-wiper member, and at least one shutter actuator. The at least one shutter-wiper member is moveable in a first direction between a first position in which the shutter-wiper covers the at least one exit... Lexmark International Inc

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

An electrophotographic image forming device according to one example includes a toner cartridge having a housing that includes a toner reservoir. An electrical connector on the housing is movable between a retracted position and an operative position. The electrical connector includes an electrical contact for contacting a corresponding electrical contact... Lexmark International Inc

Developer roll having magnetic zones of varying axial length for a dual component development electrophotographic image forming device

A developer roll according to one example embodiment includes a core including at least one permanent magnet forming a magnetized portion of the core. A cylindrical sleeve positioned around the core is rotatable relative to the core about an axis of rotation in an operative rotational direction. A release pole... Lexmark International Inc

Two door interlock mechanism for an imaging device

An imaging device with a two door interlock system for detecting a positional state of orthogonally mounted first and second access doors of the imaging device. The two door interlock system includes a mounting assembly rotatably mounted to a frame of the imaging device and movable by the first access... Lexmark International Inc

Image forming device having a supply item that includes a retainer assembly having positioning features for processing circuitry

An electrophotographic image forming device includes a replaceable unit that has a reservoir for holding toner. A circuit board is mounted within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical... Lexmark International Inc

Replaceable unit for an image forming device having a retainer assembly having positioning features for processing circuitry

A replaceable unit for an electrophotographic image forming device includes an electrical contact positioned within a pocket on a first side of a housing of the replaceable unit. The pocket has an opening facing a front of the housing to permit an electrical connector of the image forming device to... Lexmark International Inc

Image forming device having a supply item that includes a retainer assembly having positioning features for processing circuitry

An electrophotographic image forming device includes a replaceable unit that has a housing having an internal reservoir for storing toner. A circuit board retainer is positioned on an exterior surface of the housing. The retainer includes a top having an undersurface having first and second supports extending away from the... Lexmark International Inc

Electrophotographic image forming device having a toner cartridge that includes a movable projection for providing installation feedback

An electrographic image forming device according to one example embodiment includes toner cartridge having a housing that includes a toner reservoir. An outlet port faces downward on a front of the housing near a first side of the housing. A linkage is positioned on the first side of the housing... Lexmark International Inc

Endless fuser belt with heat pipe and two heating elements

A fuser assembly comprising an endless fuser belt having positioned internally within a first metal roll having a heat pipe, a second metal roll having a first heating element, and a second heating element disposed between the first and the second metal rolls. The endless fuser belt is disposed proximate... Lexmark International Inc

Removable media tray having a high latching force and a low opening force

A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes... Lexmark International Inc

Removable media tray having a high latching force and a low opening force

A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes... Lexmark International Inc

Toner formulation using crystalline polyester encapsulated with a styrene acrylate latex and preparing the same

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylate encapsulated crystalline polyester latex, a pigment, and a shell formed around the core including a second polymer binder and method to make the same. The... Lexmark International Inc

Toner cartridge for use in an image forming device

An electrophotographic image forming device according to one example embodiment includes a toner cartridge having a housing that defines a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on the front of the housing near a first side. A toner delivery system for... Lexmark International Inc

Toner formulations having improved toner usage efficiency

A toner composition and a method of making a toner composition wherein toner particles having an average size range of 1-25 μm may be mixed with an extra particulate additives including large silica particles having a primary particle size in the range of 60 nm to 120 nm, medium fumed... Lexmark International Inc

Toner formulations having improved toner usage efficiency

A toner composition and a method of making a toner composition wherein toner particles having an average size range of 1-25 μm may be mixed with an extra particulate additives including large silica particles having a primary particle size in the range of 60 nm to 120 nm, medium fumed... Lexmark International Inc

Systems and methods for fuser power control

A method of controlling the temperature of a fuser is disclosed. The fuser is driven with a repeated sequence of half-cycles of an AC line voltage. The sequence contains partial half-cycles and does not have a repeating sequence shorter than twenty half-cycles. The disclosed sequences provide fine granularity of fuser... Lexmark International Inc

Positioning features for electrical contacts of a replaceable unit of an electrophotographic image forming device

A replaceable unit for an electrophotographic image forming device according to one embodiment includes a pocket formed on a first side of a housing. A bottom end of the pocket is open for receiving an electrical connector during insertion of the replaceable unit into the image forming device. An electrical... Lexmark International Inc

Photoconductor lubricant assembly

A photoconductor unit for an electrophotographic image forming device according to one example embodiment includes a housing and a photoconductive drum rotatably mounted on the housing. The photoconductive drum has an outer surface. A cap is detachably mounted on the housing. A lubricant supply is positioned to provide a lubricant... Lexmark International Inc

Positioning features for electrical contacts of a replaceable unit of an electrophotographic image forming device

A replaceable imaging basket for an electrophotographic image forming device according to one embodiment includes a frame having a positioning slot that is open at a top of the frame for receiving a replaceable unit. An electrical connector is positioned on an inner side of the frame adjacent to the... Lexmark International Inc

Method to make a photoconductor having an overcoat with tetrafunctional radical polymerizable charge transport molecule

where R1 and R2 contain a spacer group and a radical polymerizable functional group, R3 and R4 are selected from the group consisting of a radical polymerizable functional group, a non-radical polymerizable functional group, and one each of a radical polymerizable functional group and a non-radial polymerizable functional group, and... Lexmark International Inc

07/06/17 / #20170192373

Image forming device with laser scanner unit and memory therefor

An image forming device includes a controller and a laser scanning unit. The laser scanning unit includes a light source for generating a laser beam for discharging a photoconductive member to create an electrostatic latent image. A first memory is housed on the laser scanning unit and stores data unique... Lexmark International Inc

07/06/17 / #20170192379

Power management and control for a fuser of an electrophotographic imaging device

A system and method for controlling the fuser assembly of an electrophotographic imaging device, including determining a resistance of the fuser heater at a predetermined temperature that is less than a fusing temperature for performing a fusing operation; calculating a set point heater resistance based on the determined heater resistance,... Lexmark International Inc

07/06/17 / #20170195521

Laser scanning unit adjusting output power of modulated beam using shading information to reduce scan line energy variation

A laser scanning unit for an image forming device includes a light source for emitting a laser beam, a scanning member having at least one reflective surface for scanning the laser beam onto an imaging surface across a plurality of scan lines, and driver circuitry for driving the light source... Lexmark International Inc

06/29/17 / #20170184984

Photoconductor having crosslinkable transport molecules having four radical polymerizable groups and method to make the same

An improved organic photoconductor drum having a protective overcoat layer and method to make the same is provided. The protective overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6... Lexmark International Inc

06/29/17 / #20170184985

Photoconductor having crosslinkable transport molecules having four radical polymerizable groups and method to make the same

An improved organic photoconductor drum having a protective overcoat layer and method to make the same is provided. The protective overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate having at least 6... Lexmark International Inc

06/29/17 / #20170184986

Photoconductor overcoat having crosslinkable hole transport molecules having four radical polymerizble groups and method to make the same

An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate... Lexmark International Inc

06/29/17 / #20170184987

Photoconductor overcoat having crosslinkable hole transport molecules having four radical polymerizble groups and method to make the same

An improved overcoat layer for an organic photoconductor drum of an electrophotographic image forming device and method to make the same is provided. The overcoat layer is prepared from a curable composition including a crosslinkable hole transport molecule containing four radical polymerizable functional groups in combination with a crosslinkable acrylate... Lexmark International Inc

06/29/17 / #20170185028

Cleaner blade sealing in an electrophotographic image forming device

A cleaner assembly according to one embodiment includes a cleaner blade that extends upward in a cantilevered manner and that includes a cleaning edge for contacting a surface to remove toner from the surface. A waste toner sump is positioned adjacent to a rear side of the cleaner blade for... Lexmark International Inc

06/22/17 / #20170176882

Insert molded bearing for a rotatable component of an image forming device

The plastic shell covers an entire outer circumferential surface of the metal bearing and an inner axial side of a portion of the metal bearing forming the opening is inset from an inner axial side of the plastic shell such that the plastic shell shields the metal bearing from electrical... Lexmark International Inc

06/22/17 / #20170176887

Toner cartridge having an axially movable member in a toner reservoir thereof

A toner cartridge for an electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing toner. A rotatable shaft is positioned within the reservoir and has a threaded portion. A thread follower mounted on the threaded portion of the shaft moves axially along... Lexmark International Inc

06/22/17 / #20170176889

Toner cartridge having an expandable toner agitator

A toner cartridge for an electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing toner. A rotatable drive shaft is positioned within the reservoir. A partition is mounted on the drive shaft and axially movable along the drive shaft when the drive... Lexmark International Inc

06/22/17 / #20170176921

Cleaner assembly for removing waste toner in an electrophotographic image forming device

A cleaner assembly for an electrophotographic image forming device according to one example embodiment includes a cleaner blade having a pair of longitudinal ends and a cleaning edge that extends between the pair of longitudinal ends for contacting a surface to remove toner from the surface. A strip is attached... Lexmark International Inc

06/22/17 / #20170176926

Cleaner assembly for removing waste toner in an electrophotographic image forming device

A cleaner assembly for an electrophotographic image forming device according to one example embodiment includes a cleaner blade having a pair of longitudinal ends and a cleaning edge that extends between the pair of longitudinal ends for contacting a surface of a photoconductive drum to remove toner from the surface... Lexmark International Inc

06/22/17 / #20170180574

Fiducial for use in determining two media types of different lengths used on a flatbed scanner

A fiducial on a backer of a flatbed scanner is used for determining a media size of a target scanned on the platen of the scanner. The fiducial is comprised of a plurality of symbols, either arranged in a predetermined pattern or randomly within a fiducial frame, and is placed... Lexmark International Inc

06/22/17 / #20170180575

Method of using a fiducial in determining two media types of different lengths used on a flatbed scanner

A method for determining a media size of a target scanned on the platen of the flatbed scanner using a fiducial placed on a backer of the flatbed scanner at a predetermined location. The fiducial is comprised of a plurality of objects, either placed in a predetermined pattern or randomly... Lexmark International Inc

06/15/17 / #20170168423

Toner port shutter for a toner container of an electrophotographic image forming device

A toner container includes a housing having a reservoir for holding toner. An inlet port is formed on the housing and in fluid communication with the reservoir for receiving toner. A first shutter member and a second shutter member is positioned about the inlet port and are each pivotable between... Lexmark International Inc

06/15/17 / #20170168447

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

A replaceable unit for an electrophotographic image forming device according to one example includes a housing having a toner reservoir. An electrical connector mounted on the housing is movable between a retracted position and an operative position. The electrical connector includes an electrical contact for contacting a corresponding electrical contact... Lexmark International Inc

06/08/17 / #20170158451

Media accumulator-ejector for use with an imaging device

A media accumulator-ejector for use with an imaging apparatus. Rotatable upper and lower roll assemblies are located above and below a media accumulation zone comprised of an accumulation plate and positioned to receive media exiting an imaging device. The roll assemblies are moveable like jaws between an open position where... Lexmark International Inc

06/08/17 / #20170163640

Systems and methods for authentication of printer supply items

Systems and methods for authenticating printer supply items using revocation lists are disclosed. Revocation lists are updated using DNSSEC to communicate between a printer and a DNS name server. A domain name is created containing a printer supply item serial number, a message digest, and a message authentication code. The... Lexmark International Inc

06/08/17 / #20170163641

Systems and methods for authentication of printer supply items

Methods for authenticating printer supply items using revocation lists are disclosed. Revocation lists are updated using DNSSEC to communicate between a printer and a DNS name server. A first domain name is created containing a request for a challenge to an authentication module and sent to the DNS name server.... Lexmark International Inc

05/25/17 / #20170144321

Motor control a rotary hole punch system

A sheet processing apparatus includes a punch mechanism disposed along a media path at a punch point at which a hole is to be punched through a punch location on a media sheet advancing along the media path. The punch mechanism includes a rotatable punch arm having a punch head,... Lexmark International Inc

05/25/17 / #20170147881

Identifying consumer products in images

Systems and methods identify consumer products in images. Known consumer products are captured as grayscale or color images. They are converted to binary at varying thresholds. Connected components in the binary images identify image features according to pixels of a predetermined size, shape, solidity, aspect ratio, and the like. The... Lexmark International Inc

05/25/17 / #20170147900

Identifying consumer products in images

Systems and methods identify consumer products in images. Known consumer products are captured as grayscale or color images. They are converted to binary at varying thresholds. Connected components in the binary images identify image features according to pixels of a predetermined size, shape, solidity, aspect ratio, and the like. The... Lexmark International Inc

05/25/17 / #20170147903

Identifying consumer products in images

Systems and methods identify consumer products in images. Known consumer products are captured as grayscale or color images. They are converted to binary at varying thresholds. Connected components in the binary images identify image features according to pixels of a predetermined size, shape, solidity, aspect ratio, and the like. The... Lexmark International Inc

05/11/17 / #20170131650

Toner formulation using wax encapsulated with a styrene acrylate latex formulation and preparing the same

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylate encapsulated wax latex, a pigment, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed... Lexmark International Inc

05/11/17 / #20170131651

Toner formulation using crystalline polyester encapsulated with a styrene acrylate latex formulation and preparing the same

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylic encapsulated crystalline polyester latex, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the... Lexmark International Inc

05/11/17 / #20170131652

Toner formulation using wax encapsulated with a styrene acrylate latex and preparing the same

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylate encapsulated wax latex, a pigment, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed... Lexmark International Inc

05/11/17 / #20170131653

Toner formulation using crystalline polyester encapsulated with a styrene acrylate latex formulation and preparing the same

The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylic encapsulated crystalline polyester latex, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the... Lexmark International Inc

05/04/17 / #20170123348

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

A toner cartridge according to one embodiment includes a housing having a toner reservoir. An outlet port in fluid communication with the reservoir is positioned on a front of the housing near a first side of the housing. An interface gear is exposed on the front of the housing near... Lexmark International Inc

05/04/17 / #20170124611

Methods for monitoring and valuating transactions for document processes

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... Lexmark International Inc

Patent Packs
04/27/17 / #20170113392

Continuous extrusion manufacturing a z-directed component for insertion into a mounting hole in a printed circuit board

A method for manufacturing a Z-directed component for insertion into a mounting hole in a printed circuit board according to one example embodiment includes simultaneously extruding a plurality of materials according to the structure of the Z-directed component to form an extruded object and forming the Z-directed component from the... Lexmark International Inc

04/27/17 / #20170115613

Bi-directional spring brake for a photoductive drum

A photoconductive drum assembly according to one embodiment includes a photoconductive drum rotatable about a rotational axis in first and second rotational directions. A spring brake has a coiled portion wrapped around a portion of the photoconductive drum at its axial end and around the rotational axis of the photoconductive... Lexmark International Inc

04/13/17 / #20170100862

Injection-molded physical unclonable function

A physical unclonable function formed by an injection molding machine is disclosed. A highly random distribution of magnetic particles is created by magnetizing magnetizable particles before feeding the particles into the injection molding machine due to turbulence within the injection molding machine. Plastic is also fed into the injection molding... Lexmark International Inc

04/13/17 / #20170102668

Physical unclonable function of a supply item

A physical unclonable function (PUF) located on a supply item for an imaging device is disclosed. The PUF is advantageously located on the back side of the supply item opposite a handle. This configuration enables a PUF reader to be located at the end of the insertion path of the... Lexmark International Inc

04/13/17 / #20170102670

Integrated handle and latch for a replaceable unit of an electrophotographic image forming device

A replaceable unit for an electrophotographic image forming device according to another example embodiment includes a frame and a handle exposed on a top portion of the frame to allow a user to carry the replaceable unit by holding the handle. The handle is movable between a raised position and... Lexmark International Inc

04/13/17 / #20170103791

Rotating magnetic measurements of physical unclonable functions

A rotating magnetic physical unclonable function (PUF) is disclosed. Rotating the PUF enables robust low cost PUF readers. PUF may be incorporated into a user-replaceable supply item for an imaging device. A PUF reader may be incorporated into an imaging device to read the PUF. Other systems and methods are... Lexmark International Inc

04/13/17 / #20170103834

Methods of making physical unclonable functions having magnetic and non-magnetic particles

A method of making a physical unclonable function (PUF) having magnetic and non-magnetic particles is disclosed. Measuring both magnetic field and image view makes the PUF difficult to counterfeit. PUF may be incorporated into a user-replaceable supply item for an imaging device. A PUF reader may be incorporated into an... Lexmark International Inc

04/13/17 / #20170104486

Toothed-rack physical unclonable function

A physical unclonable function (PUF) located on a supply item for an imaging device is disclosed. The PUF has a toothed rack configured to mate with a gear. During reading operations, the gear turns and translates the PUF linearly under a magnetic sensor. This configuration is inexpensive and robust. Other... Lexmark International Inc

04/13/17 / #20170104600

Physical unclonable function imaged through two faces

A physical unclonable function (PUF) imaged through two faces is disclosed. The PUF is difficult to counterfeit because the view through both faces must be duplicated for a successful counterfeit. PUF may be incorporated into a user-replaceable supply item for an imaging device. A PUF reader may be incorporated into... Lexmark International Inc

04/13/17 / #20170104601

Elongated physical unclonable function

An elongate physical unclonable function (PUF) is disclosed. The PUF has a longitudinal axis and contains a plurality of small magnetic particles. A much larger magnet is positioned on the longitudinal axis to indicate a home position. A low-cost linear translation mechanism may be used to read the PUF by... Lexmark International Inc

03/30/17 / #20170090188

Collimation assembly for an imaging device

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... Lexmark International Inc

03/30/17 / #20170090189

Collimation assembly for an imaging device

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... Lexmark International Inc

03/30/17 / #20170090190

Collimation assembly for an imaging device

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... Lexmark International Inc

03/30/17 / #20170090357

Drive mechanism for an intermediate transfer member module of an electrophotograhic imaging device

An intermediate transfer member (ITM) module including a frame; a backup roll and a drive roll rotatably disposed along a first end portion of the frame. A tension roll is rotatably disposed along a second end portion of the frame. An ITM belt forms an endless loop around the backup... Lexmark International Inc

03/23/17 / #20170082937

Surface modified magnetic carriers using hydrophobized titania

A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles, wherein the magnetic carrier particle is surface treated with a hydrophobized titania particle. The surface treatment with a hydrophobized titania particle may be selected from either a spherical, disk,... Lexmark International Inc

Patent Packs
03/23/17 / #20170082949

Notched end seal for an electrophotographic image forming device

An end seal for an electrophotographic image forming device according to one example embodiment includes an elastomeric body having a blade seal portion for sealing against a rear surface of a doctor blade and a curved rotary seal portion that extends from a bottom end of the blade seal portion... Lexmark International Inc

03/23/17 / #20170082952

Surface modified magnetic carriers using hydrophobized titania

A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. Tribocharge uniformity is achieved in the developer mix by performing the step of treating the surface of the polymer coated magnetic carrier particles with hydrophobized titania surface additives before the polymer coated... Lexmark International Inc

03/16/17 / #20170075246

Method to achieve tribocharge uniformity of a developer mix across different temerature and humidity conditions by modifying the surface of the magnetic carrier particle

A method for providing a developer mix having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system typically is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by performing... Lexmark International Inc

03/16/17 / #20170075257

Cam driven reciprocating toner agitator

A toner agitation system according to one example embodiment includes a toner agitator movable in a reciprocating manner. A cam follower is operatively connected to the toner agitator. A rotatable cam has a cam surface that contacts the cam follower. A biasing member biases the cam follower into contact with... Lexmark International Inc

03/16/17 / #20170075286

Drive coupler for a rotatable component of an electrophotographic image forming device

A drive element for a rotatable component of an electrophotographic image forming device according to one example embodiment includes a body having a center hole for receiving a drive shaft therein. The center hole defines a rotational axis of the body. A drive coupler is positioned on the body and... Lexmark International Inc

03/16/17 / #20170075294

Replaceable unit for an electrophotographic image forming device having positioning features for electrical contacts

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... Lexmark International Inc

03/16/17 / #20170075295

Toner cartridge for use in an image forming device

A toner cartridge according to one example embodiment includes a housing defining a reservoir for containing toner. An exit port in fluid communication with the reservoir faces downward on a front of the housing near a first side of the housing. A first alignment guide is positioned on the first... Lexmark International Inc

03/16/17 / #20170075298

Replaceable unit for an electrophotographic image forming device having a latching mechanism

A replaceable unit for an electrophotographic image forming device includes a body having a toner reservoir. A drive element on a rear end of the body is unobstructed to mesh with a corresponding drive element in the image forming device. A toner outlet port is positioned on a bottom of... Lexmark International Inc

03/09/17 / #20170068179

Formulation for a developer mix having tribocharge uniformity across different temperature and humidity conditions

A developer mix formulation having tribocharge uniformity across varying temperature and humidity conditions is provided. A developer mix used in a dual component development (DCD) system is a mixture of toner particles and magnetic carrier particles. Tribocharge uniformity is achieved in the developer mix by using magnetic carrier particles having... Lexmark International Inc

02/23/17 / #20170052478

Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing

A replaceable unit for an electrophotographic image forming device according to one example embodiment includes a housing having a reservoir for storing toner. A rotatable shaft is positioned within the reservoir and has an axis of rotation. A first magnet and a second magnet are connected to the shaft and... Lexmark International Inc

02/23/17 / #20170052503

Systems for configuring settings of an electronic device for customization thereof

A system for customizing settings of an electronic device includes a replaceable component having an optical member for receiving optical energy. The optical member has an optical characteristic for modifying an amount of the optical energy that leaves the optical member relative to an amount of the optical energy received... Lexmark International Inc

02/23/17 / #20170053163

Content delineation in document images

Methods and apparatus delineate grouped together content in documents. Void and unvoid pixels in document images get clustered together. Execution of a histogram and autocorrelation function, including peak detection, against the unvoid clusters reveals the content. Techniques for clustering include iteratively transforming an original image into secondary images with a... Lexmark International Inc

02/16/17 / #20170045843

Toner cartridge having a movable projection for providing installation feedback to an image forming device

A toner cartridge according to one example embodiment includes a housing having a toner reservoir. An outlet port faces downward on a front of the housing near a first side of the housing. A shutter is movable between a closed position blocking the outlet port and an open position unblocking... Lexmark International Inc

01/26/17 / #20170023883

Device for connecting a centerless auger to a rotatable member

An auger assembly according to one example embodiment includes an auger having a helical flight extending along a longitudinal axis. The auger has a central opening running along the longitudinal axis. The auger has an end that includes at least a portion of a turn having substantially zero pitch. A... Lexmark International Inc

01/26/17 / #20170023894

Heater member for the fuser assembly of an electrophotographic imaging device

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... Lexmark International Inc

01/26/17 / #20170023910

Heater member for the fuser assembly of an electrophotographic imaging device

A fuser assembly, including a heat transfer member; a backup member disposed adjacent the heat transfer member so as to form a fuser nip; a frame in which the heat transfer member and the backup member are at least partly disposed; and a cover member pivotably coupled to the frame... Lexmark International Inc

01/19/17 / #20170017179

Toner level sensing for a replaceable unit of an image forming device

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 sensor. The processing circuitry counts the number of the pulses received from the sensor. Upon receiving... Lexmark International Inc

01/19/17 / #20170019543

Scan through display and methods of using same

An imaging device, including a panel having a privacy layer selectively configurable in a transparent state and an opaque state that blocks light from passing through the panel, and a display layer made of transparent material and positioned between the privacy layer and an outer surface of the panel, the... Lexmark International Inc

01/12/17 / #20170010547

Method of making a core shell toner formulation including a styrene acrylate polyester copolymer used for the shell

The present invention relates generally to methods to make a chemically prepared toner having a core shell structure for use in electrophotography and more particularly to a method to make an emulsion aggregation chemically prepared core shell toner formulation using a styrene acrylic polyester copolymer for the shell. The styrene... Lexmark International Inc

01/12/17 / #20170010549

Chemically prepared core shell toner formulation including a styrene acrylate polyester copolymer used for the shell

A chemically prepared toner composition according to one example embodiment includes a core including at least one polymer binder, a colorant and a release agent; a shell that is formed around the core and includes a third polymer binder; and a borax coupling agent between the core and the shell.... Lexmark International Inc

01/05/17 / #20170001386

Elastomeric roll for an electrophotographic image forming device having compressive hollow microparticles defining a surface texture of the roll

A method for forming a roll core for use in an electrophotographic image forming device according to one example embodiment includes shaping the roll core from a mixture of an uncured elastomer and hollow microparticles. The elastomer of the shaped roll core is cured without permanently expanding hollow microparticles positioned... Lexmark International Inc








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