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| Number | Title | Issue Date |
| 5732306 | Printer on-line diagnostics for continuous low frequency motion quality defects A method and apparatus for accurately and quickly enabling a technical representative to diagnose the source (or identify the component(s)) that is the root cause of the motion quality defect being experienced to reduce down time of the printing machine. ... | 03/24/1998 |
| 5729815 | Correct brush bias polarity for single and dual ESB cleaners with triboelectric negative toners An apparatus and method for cleaning charged triboelectric negative toner residual particles from the photoreceptor surface. A positive bias is applied to two electrostatic brushes in the dual cleaning system or to a single electrostatic brush. The rotati... | 03/17/1998 |
| 5724640 | Floating backer and mount for cleaning blades and spots blades on belt imaging surfaces An apparatus for cleaning particles from a surface using a floating backer and cleaning or spots blade mounted to allow freedom to follow the location of the imaging surface. The cleaning or spots blade controls tolerances when the blade and the floating ... | 03/03/1998 |
| 5709586 | Honed mandrel An electroforming process and apparatus for forming an electroform with a roughened surface. An electroform with a roughened surface is formed by plating a reusable mandrel with a roughened surface. The reusable mandrel surface is roughened using a sandbl... | 01/20/1998 |
| 5701572 | Ceramic coated detoning roll for xerographic cleaners An apparatus and method for removing particles from a cleaner brush used to clean a photoreceptive surface. The apparatus and method include a cleaning brush or other cleaning device and a ceramic coated detoning roll resistive to wear. The detoning roll ... | 12/23/1997 |
| 5698086 | Stepped honed core mandrel An electroforming process and apparatus for forming an electroform with a roughened surface. The present invention roughens the surface of the mandrel using a sandblasting device in the center region of the mandrel allowing the two end regions to remain s... | 12/16/1997 |
| 5681440 | Encapsulated nickel photoreceptor substrate An electroforming process and apparatus for creating a nickel or like substrate encapsulated by another material to prevent wear to the nickel substrate. The encapsulation of the nickel substrate requires encapsulation of the inner and outer diameter of t... | 10/28/1997 |
| 5669055 | Dual brush cleaner retraction mechanism and variable inertia drift controller for retractable cleaner An apparatus in which a six bar linkage cleaner brush retraction/engagement mechanism enables brush retraction (and engagement with the photoreceptor) while providing good control over the brush interference and the capability of changing all of the timin... | 09/16/1997 |
| 5669041 | Retracting cleaner with defined pivot points and/or sliding seals An apparatus and method for retracting the cleaner from an imaging surface and preventing toner leakage. An apparatus and method that describes a DESB (i.e. dual electrostatic brush) cleaner in a multi-pass operation that not only has to clean the toner f... | 09/16/1997 |
| 5659849 | Biased toner collection roll for an ultrasonically assisted cleaning blade A method and apparatus for eliminating the accumulation of triboelectric negative toner that occurs between the cleaning edge of the cleaning blade and the photoreceptor surface. After image transfer, the residual toner particles on the photoreceptor surf... | 08/19/1997 |
| 5655204 | Dual ESB cleaner with alternating bias using duty cycle control An apparatus and method for cleaning particles from the imaging surface of the photoreceptor is by having a DC biased electrostatic brush remove the majority of the residual particles on the imaging surface with an AC biased brush as a follow-up for remov... | 08/05/1997 |
| 5655203 | Non-rotating retracted cleaning brush 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 cleani... | 08/05/1997 |
| 5653439 | Exit tray corrugation slip rolls with a variable force idler An apparatus and method that describes utilizing a corrugation slip nip system, including a variable force idler that encompasses three stages, to prevent buckling of copy sheets traveling at a high rate of speed upon exiting from a high speed printing ma... | 08/05/1997 |
| 5652951 | Detoning cycle to increase brush life and reduce emissions by removing accumulated toner 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 st... | 07/29/1997 |
| 5652945 | Automatic measurement of cleaning brush nip width for process control and/or diagnostics A method to evaluate the cleaning performance of brush cleaners by measuring the brush to photoreceptor nip width (e.g cleaning footprint or contact zone) using an ESV sensor or ETAC sensor. This nip width measurement is automatically made using one of th... | 07/29/1997 |
| 5652560 | Extended life solenoid A method and solenoid assembly for extending the wear life of the solenoid. These include: enabling rotation of the solenoid plunger within the solenoid housing to expose a new solenoid plunger surface when solenoid plunger surface reaches a failure mode;... | 07/29/1997 |
| 5646719 | Cleaner-brush having a fiberless segment A method and apparatus for cleaning residual particles from a surface that includes a cleaning brush with a fiberless segment and a fiber segment. These two segments enable the cleaning brush to both clean the surface with the fiber segment by rotating th... | 07/08/1997 |
| 5634185 | Removing toner additive films, spots, comets and residual toner on a flexible planar member using ultrasonic vibrational energy A cleaning apparatus and color printing machine having an ultrasonic cleaner and a cleaning blade is disclosed for removing residual toner, toner additive films, spots and comets off the imaging surface. The toner additives used during development leave m... | 05/27/1997 |
| 5623721 | Brush bias polarity for dual ESB cleaners without preclean corotron for triboeletric negative toners An apparatus and method for cleaning triboelectric negative toner particles from the photoreceptor surface without the need of a preclean corotron. To remove the residual particles, a first cleaning brush, in the direction of motion of the photoreceptor, ... | 04/22/1997 |
| 5606721 | Diagnostic procedure to identify cleaner retraction timing faults A method and an apparatus for identifying cleaner retraction timing faults in an electrostatographic printer. A toner image or patch is developed on the photoreceptor during the non-printing mode of the printer. After cleaning by a retractable cleaner, th... | 02/25/1997 |
| 5600425 | Cleaner system with central augering An apparatus for a central augering system within a cleaning system. This central auger system provides several advantages including: 1) reduction in size of the overall cleaner; 2) prevention of bridging in the cleaner housing due to the close proximity ... | 02/04/1997 |
| 5597419 | Slow brush rotation in standby to avoid brush flat spots 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 cl... | 01/28/1997 |
| 5594541 | Cleaner/waste bottle interface sealing via toner valve An apparatus and method that uses a toner valve to seal the interface between a cleaner housing and waste container. The toner valve incorporates a two piece valve of which the larger, called the main valve, is housed in the cleaner housing, and the small... | 01/14/1997 |
| 5587781 | Optimizing electrostatic brush interferences for increased detoning efficiency An apparatus is disclosed that includes an electrostatic brush cleaner that optimizes the brush interference with the imaging surface and the detoning roll for increased detoning efficiency. The brush-to-detoning roll interference is always kept greater t... | 12/24/1996 |
| 5576822 | Ultrasonic transducer for brush detoning assist An ultrasonic transducer located under the photoreceptor belt provides vibrational energy to the surface to separate toner particles from the surface. The transducer is positioned such that it is located directly opposite the cleaning nip of the brush cle... | 11/19/1996 |
| 5561513 | Enhanced brush detoning by rotating the detoning roll in the "with" direction An apparatus for efficient detoning of a cleaner brush by rotating the brush and the moving detoning surface in the "with" mode direction through the detoning nip. The "with" mode of detoning prevents compression of the fibers through the detoning nip whi... | 10/01/1996 |
| 5546177 | Electrostatic brush cleaner performance monitor A method and apparatus for monitoring the performance of a cleaner brush used to clean a photoreceptive surface. The apparatus and method include developing a toner patch of known first length on the imaging surface and then removing that toner patch from... | 08/13/1996 |
| 5534988 | Retraction activated waste bottle mechanism for uniform toner distribution An apparatus and method for preventing nonuniform accumulation of toner collected in a waste container of particles cleaned from a surface. The apparatus and method for disturbing the particles to provide uniform accumulation of toner in the waste contain... | 07/09/1996 |
| 5530537 | Biased foam roll cleaner An apparatus for cleaning the imaging surface of an electrophotographic machine that includes a biased conductive foam roll. The biased conductive foam roll removes toner from the photoreceptor. The biased foam roll provides the electrostatic cleaning adv... | 06/25/1996 |
| 5519480 | Retraction of cleaner backers to enable disengagement of the cleaner from the photoreceptor for image on image, multi-pass color development An apparatus and method for cleaning particles from a moving imaging surface. Backers are retracted from the photoreceptor to release cleaning contact between the brushes and the moving imaging surface during development of image-on-image in the multi-pas... | 05/21/1996 |
| 5512995 | Non-uniform scraper blade load to increase detoning roll life A cleaning apparatus for achieving a non-uniform load on the detoning roll to prolong the life of the detoning roll by preventing premature wear of the detoning roll ends. The uniform load on the scraper blade is prevented from wearing the detoning edges ... | 04/30/1996 |
| 5500969 | Dual polarity commutated roll elctrostatic cleaner with acoustic transfer assist A dual polarity commutated roll attracts toner and debris particles loosened into a particle cloud from the photoreceptor surface by an acoustical horn. The particles are attracted to and adhere to the commutated roll, whether right or wrong sign (i.e. po... | 03/26/1996 |
| 5500105 | Bowed shape electroforms An electroforming process and apparatus for bowing the imaging surface to provide "steering" for moving the electroformed imaging surfaces over rollers or like devices. One embodiment of the present invention is to bow or crown the electroformed imaging s... | 03/19/1996 |
| 5493383 | Sequenced cleaner retraction method and apparatus An apparatus and method using eccentrics, driven by a two-level gear, to sequentially retract and engage the brushes in the non-imaging region of the photoreceptor surface. The first brush, in the direction of motion of the photoreceptor, is brought into ... | 02/20/1996 |
| 5493381 | Optimizing preclean corona current for cleaning multiple toners 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.... | 02/20/1996 |
| 5479249 | Brush cleaner with roll detoning and air waste removal A cleaning apparatus that comprises a brush cleaner to remove particles from the imaging surface. The particles are removed from the brush cleaner using a detoning roll. The particles are loosened and separated from the detoning roll using a scraper blade... | 12/26/1995 |
| 5450186 | Retractable flexible cleaner brush A flexible cleaner brush belt increases brush belt life by flexing away from the photoreceptor when not in use. The flexible belt is lifted away from contact with the photoreceptor and placed back into contact with the photoreceptor by a camming device. A... | 09/12/1995 |
| 5424820 | Cleaner sump with magnetic transport A cleaning system for increasing the packing density of a cleaner sump that uses magnetic toner, by filling unused sump space. The cleaning system uses a magnetic force to attract the magnetic waste toner to the sump area not filled by gravity assistance ... | 06/13/1995 |
| 5420375 | Proper charging of donor roll in hybrid development A method and apparatus involving the stopping and starting of the development of images, using hybrid development, to insure proper charging of the donor toner layer. A second (e.g. magnetic brush) roll is used to place toner on the donor roll or remove t... | 05/30/1995 |
| 5412461 | Friction load insensitive mounting for blade An apparatus in which a photoreceptor cleaning blade is mounted to an extension of the coupler link of a four bar linkage. A torsion spring is positioned at the pivot of the crank link to create the torque on the crank link. A weight or solenoid can also ... | 05/02/1995 |
