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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7171134 | White vector adjustment via exposure The white vector—the voltage difference between white areas of a latent image on a photoconductive unit and a developer roller—may be independently adjusted at each photoconductive unit, allowing multiple image forming units to be driven from a shared power supp... | 01/30/2007 |
| 7139517 | Developing method for an image forming apparatus and developing device using the same A developing method of the present invention develops a latent image formed on an image carrier with a two-ingredient type developer, which consists of toner grains and carrier grains retaining the toner grains thereon, deposited on a developer carrier in the form o... | 11/21/2006 |
| 7066669 | Method of creating an image replacement document for use in a check truncation environment and an apparatus therefor A method of creating an image replacement document (IRD) during two passes of a sheet material through a printing apparatus including building a first print file portion based upon IRD data, building a second print file portion based upon IRD data, printing with non... | 06/27/2006 |
| 7068967 | Developing apparatus with separable multiple developer layers and image forming apparatus incorporating same A developing apparatus including a developer container which contains a first developer having a first charging polarity and a second developer having a second charging polarity opposite to the first charging polarity, a developer bearing member which bears the firs... | 06/27/2006 |
| 7066668 | Method of creating an image replacement document for use in a check truncation environment and an apparatus therefor An image replacement document (IRD) is created in a single feed of sheet of material through a feeder. A print file having a MICR portion and a non-MICR portion is built based upon IRD data. The IRD data used to build the print file may be from an external applicati... | 06/27/2006 |
| 6993655 | Record and related method for storing encoded information using overt code characteristics to identify covert code characteristics A record and related method is provided for storing encoded information comprising a storage media, first marks on the storage media having a covert code characteristic, with the first marks conveying a covertly marked code and second marks preferably having an over... | 01/31/2006 |
| 6556229 | Electrophotographic apparatus having a fringe development preventing mechanism In an electrophotographic apparatus, regions having at least three different potential levels Vc, Vw, and Vr are formed on a photosensitive member by using an exposing device, and developing processes respectively using colored particles of different kind... | 04/29/2003 |
| 6487384 | Image forming electrophotography apparatus and magnetic developing unit In an image forming apparatus for charging a photosensitive body, changing the light exposure amount in at least three levels at exposure to light, thereby forming an electrostatic image made up of a high-potential part, a low-potential part, and an inter... | 11/26/2002 |
| 6201595 | Modular electrophotographic color printer An electrophotographic color printer includes a photoconductor and a printing unit for producing a toner image on the photoconductor. The printing unit is removably provided in a receptacle in the printer.... | 03/13/2001 |
| 6117602 | Electrostatic printing method and apparatus having enhanced image resolution characteristics A method and apparatus for enhancing image resolution characteristics of an electrostatographic printing device use toners of opposite polarity to generate a toner image.... | 09/12/2000 |
| 6047155 | Color printing machine having AC pretransfer toner treatment A color electrophotographic printer that prepares a composite toner image for transfer by exposing an image area containing the composite toner image to an erase lamp and then running the composite toner image by an AC scorotron.... | 04/04/2000 |
| 5999783 | Multiple charging of a toner image for transfer An electrophotographic machine has a photoreceptive member supporting a composite color toner image formed of multiple layers of different colored toners. The composite toner image is pre-transfer charged at a first voltage level and recharge at a second ... | 12/07/1999 |
| 5837408 | Xerocolography tandem architectures for high speed color printing Full process color imaging is provided with the use of two xerocolography engines in tandem. Each of the two xerocolography engines is capable of creating three perfectly registered latent images with subsequent development thereof in a spot next to spot ... | 11/17/1998 |
| 5809382 | DAD, DAD, DAD single-pass color printing A method for and apparatus for creating partial gamut color images in a single pass. A plurality of latent discharged area images are formed using a single exposure. A first discharged area image is developed followed by recharging of the photoreceptor co... | 09/15/1998 |
| 5748218 | Method for forming toner images with two distinct toners An image forming method which forms a two color toner image or an image made up of two types of toners of the same color includes forming a first image with discharged area development (DAD) and a second image with charged area development (CAD). Resoluti... | 05/05/1998 |
| 5713064 | Method and apparatus for forming toner images with two distinct toners The scavenging of a first toner into a second toning station in a DAD-CAD or CAD-DAD process can be reduced by allowing scavenged toner to deposit in the background of single color images. The polarity of the first toner of the scavenged toner is not chan... | 01/27/1998 |
| 5604569 | Image forming method exerting joule heat on an irradiated portion of a photoconductive layer, and an apparatus used for such a method An image-forming method using a latent-image forming body which consists of a transparent electrode layer, a photoconductive layer, an electrode layer and a pyroelectric-material layer made of a dielectric substance that are successively stacked on its tr... | 02/18/1997 |
| 5550626 | Image forming device for creating a color image having pixel elements of different thicknesses An electrophotographic color printer exposes a photosensitive body to form an exposure pattern thereon. Toner material of two different colors is then applied to the exposure pattern by developers. The toner materials are subsequently transferred to a rec... | 08/27/1996 |
| 5532801 | Image forming method superposing first and second developing operations on an image bearing member An image forming method includes forming a first electrostatic image on an image bearing member; developing with developer carried on a developer carrying member the first image formed in the first image forming step; forming a second electrostatic image ... | 07/02/1996 |
| 5406313 | Color image forming apparatus and method A first negative or positive latent electrostatic image is formed on a latent image bearing body with a first writing device, and developed with a monochromatic toner. A second latent image of the type different than the first latent image is formed by a ... | 04/11/1995 |
| 5339135 | Charged area (CAD) image loss control in a tri-level imaging apparatus A pair of Electronic Voltmeters (ESV) are utilized to control the photoreceptor charging voltage in a Tri-Level imaging apparatus. One of the ESVs is used to control the voltage increases of a charging device. The other ESV is used to monitor the charge l... | 08/16/1994 |
| 5337136 | Tandem trilevel process color printer A tandem tri-level architecture. Three tri-level engines are arranged in a tandem configuration. Each engine uses one of the three primary colors plus one other color. Spot by spot, two color tri-level images can be created by each of the engines. The spo... | 08/09/1994 |
| 5305070 | Color select development and system application Color image creation using tri-level images wherein the image color is user selectable. Selection of a desired color establishes the voltage bias of a plurality of developer structures which, in turn, determines how much of each successive color toner is ... | 04/19/1994 |
| 5291243 | System for electronically printing plural-color tamper-resistant documents A system for printing security documents which have copy detection or tamper resistance in plural colors with a single pass electronic printer printing an integrated image controlled by an image generation system which electronically generates a safety ba... | 03/01/1994 |
| 5241356 | Method and apparatus for minimizing the voltage difference between a developed electrostatic image area and a latent electrostaic non-developed image In a multi-color imaging apparatus, the voltage differential between developed and undeveloped areas of a charge retentive surface is reduced for precluding edge effect development. The developed areas correspond to charged areas on the photoreceptor whil... | 08/31/1993 |
| 5241359 | Biasing switching between tri-level and bi-level development Image creation apparatus operable in a tri-level highlight color imaging or a black monochrome mode. The developer structures are biased in the tri-level mode using a chopped DC bias while in the monochrome black mode only the black developer structure is... | 08/31/1993 |
| 5241358 | Biasing scheme for improving latitudes in the tri-level xerographic process The operating latitude of the tri-level xerographic process is improved by replacing the standard DC bias that is applied to one or both of the developer housings in conventional tri-level imaging with a chopped DC (CDC) developer bias. Chopped DC biasing... | 08/31/1993 |
| 5223906 | Four color toner single pass color printing system using two tri-level xerographic units A four color toner single pass color printing system consists generally of a raster output scanner (ROS) optical system and two tri-level xerographic units in tandem. Only two of the three subtractive primary colors of cyan, magenta and yellow are availab... | 06/29/1993 |
| 5223897 | Tri-level imaging apparatus using different electrostatic targets for cycle up and runtime Two sets of targets, one for use during cycle up convergence of electrostatics and one during runtime enable single pass cleaning of developed patches, during cycle up convergence. To this end, different targets from those used during runtime are used for... | 06/29/1993 |
| 5221954 | Single pass full color printing system using a quad-level xerographic unit A four color toner single pass color printing system consists generally of a raster output scanner (ROS) optical system and a quad-level xerographic unit and a tri-level xerographic unit in tandem. The resulting color printing system would be able to prod... | 06/22/1993 |
| 5155541 | Single pass digital printer with black, white and 2-color capability Method and apparatus for printing toner images in black and at least two highlighting colors in a single pass of the imaging surface through the processing areas of the printing apparatus. Imaging and development techniques of color photography and tri-le... | 10/13/1992 |
| 5121172 | Method and apparatus for producing single pass highlight and custom color images Single Pass Highlight Color (SPHLC) and Single Pass Custom Color (SPCC) images are made possible on a single print using relatively high development fields compared to the prior art. Three scavengeless development housings, one with the specified custom c... | 06/09/1992 |
| 5119147 | Selective coloring of bi-level latent electostatic images Selective coloring of bi-level latent electrostatic images is obtained through a combination of 1) a scavengeless development nip enabled by an AC biased wire in self-spaced contact with a toned donor roll, 2) a belt image receiver such as either a photor... | 06/02/1992 |
| 5078087 | Development apparatus An electrophotographic printing machine in which an electrostatic latent image is recorded on a photoconductive surface. One portion of the latent image is a discharged area with the other portion of the latent image being a charged area. The discharged i... | 01/07/1992 |
| 5061969 | Hybrid development scheme for trilevel xerography A hybrid development system for developing composite tri-level xerographic latent images in which conductive magnetic brush (CMB) development system is employed at the first development station and insulative magnetic brush (IMB) development system is use... | 10/29/1991 |
| 5049949 | Extension of tri-level xerography to black plus 2 colors Highlight color printing apparatus and method for forming one black and two color images. A tri-level image containing CAD and DAD image areas and a background area is formed. A second DAD image is formed by discharging the background area forming part of... | 09/17/1991 |
| 5045893 | Highlight printing apparatus Apparatus and method of forming plural images, wherein the method includes the steps of: uniformly charging a charge retentive belt; discharging portions of the uniformly charged belt to form relatively high and low voltage areas of the same polarity on t... | 09/03/1991 |
| 5030996 | Image forming apparatus with AC bias voltages for preventing developer mixture An image forming apparatus includes an image bearing member movable through first and second developing positions in the order named and a bias voltage applying device applies a first developing bias voltage to a first developer carrying member and a seco... | 07/09/1991 |
| 5021838 | Preferred toner/carrier properties Tri-Level Highlight color imaging apparatus utilizing two-component developer materials in each of a plurality of developer housings. The triboelectric properties of the toners and carriers forming the two-component developers are such that inter-mixing o... | 06/04/1991 |
| 4984021 | Photoreceptor edge erase system for tri-level xerography The prevention of photoreceptor edge development by a discharged image area development system is accomplished by the provison of a photoreceptor charging device which uniformly charges the photoreceptor across its entire width, including the edges thereo... | 01/08/1991 |
