Xerox Corporation

Clark V Lange

Bruce Earl Thayer

Dennis G Gerbasi

Robert P Siegel

Nero R Lindblad

Daniel M Bray

Samuel P Mordenga

Darryl L Pozzanghera

Ronald E Auty

N Kedarnath

Steven Robert Moore

Eric Michael Gross

Eric Scott Hamby

R Enrique Viturro

Michael D Thompson

Ronald E Godlove

Daniel Edgardo Viassolo

Dusan G Lysy

Anthony E Audi

Herbert C Relyea

John M Wysocky

Fei Xiao

Alvin J Owens, Jr

Peter J McGuire

Karen H Kuntz

Daniel E Viassolo

This disclosure provides a printing method and system including two or more integrated image marking engines, wherein the printing system is operated with less than the total number of image marking engines to generate the maximum specified prints per minute associated with the printing system. According to one exemplary embodiment, each image marking engine is controlled to be inactive in a round-robin manner to maintain substantially equal running time on each image marking engine or a substantially equal number of printed sheets on each marking engine.

Printing system and method including active and inactive image marking engines

A multi-mode, long life monochrome printing system that includes (a) a media supply assembly having a media path (b) a moveable intermediate transfer member for receiving images from image output terminal assemblies and for transferring the images to media on the media path; and (c) a plural number of monochrome image output terminal (IOT) assemblies adjacent the moveable intermediate transfer member, each monochrome image output terminal (IOT) assembly being selectably moveable into and out of image transfer relationship with the moveable intermediate transfer member, and each monochrome image output terminal (IOT) assembly having a development unit including developer material having essentially a same color.

Multi-mode long life monochrome printing system

A method and apparatus for electrostatic brush cleaning of excess toner particles on a photoreceptor device in an image production device is disclosed. The method may include determining if an image transfer occurred in the image production device, wherein if it is determined that the image transfer occurred, rotating one or more electrostatic brushes at a first speed, and if it is determined that the image transfer did not occur, rotating the one or more electrostatic brushes at a second speed, wherein the first speed is slower than the second speed.

Method and apparatus for electrostatic brush cleaning in an image production device

A printing fluid dispenser system for multi-printer engine assembly is disclosed. The system includes a first dispenser that is adjacent to the print engine that is configured to pass printing fluid to an associated printing engine, a second dispenser adjacent to the first dispenser that is configured to store the printing fluid and pass the printing fluid to the first dispenser as the first dispenser passes the printing fluid to the printing engine and a sensor configured to detect when the printing fluid remaining in one of the first or second dispensers drops below a predetermined threshold.

Variable volume toner replenisher dispenser for TIPP systems

Systems and methods of controlling banding defects on a receiving member in an imaging or printing process using a feedback and/or feedforward control technique. In one exemplary embodiment, a method of controlling banding defects on a receiving member in an imaging or printing process includes (a) determining a toner density on the receiving member, (b) automatically determining the extent of banding on the receiving member by comparing the determined toner density to a reference toner density value, and (c) automatically adjusting the toner density based on a result obtained from the comparison of the measured toner density to the reference toner density value, automatically determining the extent of banding and automatically adjusting the toner density being performed using a feedback and/or feedforward control routine or application.

Systems and methods for correcting banding defects using feedback and/or feedforward control

A method for producing a toner of a custom color in a developer unit including a housing defining a reservoir for storing a supply of toner, a donor member for transporting toner to an imaging surface; including: identifying custom color requested; determining color of toner in the reservoir; detoning toner on the donor member if the color of toner in the reservoir is beyond a predefined value in color space from the custom color requested; calculating and dispensing primaries toner colors to be added to the reservoir to obtained the custom color requested; mixing the primary toner colors dispensed in the reservoir; and evaluating and comparing the color components of the toner being mixed to the custom color requested.

Method of development of custom colors without changing developer housing

An apparatus for developing a latent image recorded on an imaging surface with a custom color toner, including a developer housing for developing a portion of the latent image with the toner of custom color. The developer housing includes a donor member for transporting toner of the custom color to a development zone to develop the latent image. A replaceable reservoir unit is provided for mixing and supplying the custom color toner to the donor member. An array of toner dispensers is provided for supplying various primary color toners, as required, to achieve the custom color, and additional reservoirs having various colored toners therein to allow for faster convergence to a given point in the color space.

Electrophotographic development system with custom color printing

An apparatus and method for stopping rotation and retracting a cleaning brush away from contact regions to avoid the occurrence of flat spots or voids in the cleaning brush and prevent toner emissions from the cleaning brush as it is retracted. The cleaning brush is rotated about a pivot point to move the cleaning brush away from contact with the photoreceptor and the detoning roll. The pivot point is positioned so that the variation in interference to the detoning roll is minimized for variations in the interference and location of the brush against the photoreceptor. Each cleaning brush has a housing that moves in conjunction with the movement of the cleaning brush in order to avoid contact between the housing and the cleaning brush. This cleaning apparatus also enables development of multi-layer color images.

Non-rotating retracted cleaning brush

An apparatus and method is disclosed for increasing brush life and reducing emissions by removing accumulated toner using detoning cycles. A further embodiment of the disclosure is a method for periodic brush-reversing detoning cycle occurring during a standby condition.

Detoning cycle to increase brush life and reduce emissions by removing

An apparatus and method for moving a cleaning brush, periodically or continuously, to avoid flat spots or voids in the cleaning brush fibers when the printing machine is in standby or off. Periodic movement of the cleaning brush or slow rotation of the cleaning brush when the machine is in a non-operational mode prevent brush 'set' from occurring thus, preventing motion quality errors in the printing operation.

Slow brush rotation in standby to avoid brush flat spots

A method and apparatus for adjusting the preclean corona current used in a printer or digital copier such that the preclean corona current is optimized for the dominant color entering the cleaner.

Optimizing preclean corona current for cleaning multiple toners

A method and apparatus for adjusting the bias of a cleaner used in a printer or digital copier such that the cleaner bias is optimized for the dominant color entering the cleaner.

Optimizing cleaner bias for cleaning multiple toners

An electrostatic printer having a cleaning blade for removing residual particles from the surface of a photoconductive substrate. A mechanism automatically retracts the cleaning blade away from the substrate to avoid scrapping the cleaning blade against a seam on the substrate.

Apparatus and method for cleaning a substrate in a printing apparatus

A cleaning method and apparatus that provides lubrication to a secondary detoning roll in a cleaner brush system, thus reducing cleaning failures. The toner particles removed from the first detoning roll are transported to the second detoning roll. This allows lubrication of the second detoning roll and reduces the wear problem of the second detoning roll due to lack of lubrication.

Lubrication of a detoning roll

An apparatus which cleans a moving imaging surface with a cleaning blade and automatically detects a failure of the cleaning blade. A failure sensing mechanism detects the cleaning blade failure and activates a blade indexing mechanism. The indexing mechanism removes the failed cleaning blade and positions a new cleaning blade in a wiping or doctoring mode frictional contact with the imaging surface for cleaning. A brush positioned upstream of the cleaning blade, in the direction of movement of the imaging surface, disturbs the particles thereon.

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Ontario, NY, United States of America

Clark V Lange