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| Number | Title | Issue Date |
| 7489327 | Toner adsorption image forming apparatus An image forming apparatus that may be easily and inexpensively manufactured is provided. The image forming apparatus includes: a toner supply unit; an image forming element to which toner is adsorbed from the toner supply unit; an image developing unit disposed on ... | 02/10/2009 |
| 7209244 | Post RIP image rendering in an electrographic printer to minimize screen frequency sensitivity A method of printing multiple images with differing line screen frequencies with a printer is print sensitive to differing line screen frequencies, the method comprising the steps of: converting the images into a digital bitmap comprised of an array of pixels wherei... | 04/24/2007 |
| 7054014 | Post RIP image rendering in an electrographic printer to estimate toner consumption A method of estimating toner consumption of a input digital image when printed, the digital image comprised of an array of pixels and wherein each pixel is assigned a digital value representing marking information, the method comprising the steps of identifying each... | 05/30/2006 |
| 7023420 | Electronic display with photo-addressing means An electronic display comprises an electro-optic material (preferably an electrophoretic medium) having a plurality of pixels, and separate first, second and third sets of addressing means for addressing these pixels. Each of the pixels is associated with one addres... | 04/04/2006 |
| 6975411 | Post rip image rendering in an electrographic printer using density patch feedback An electrostatographic recording method for printing an image on a receiver comprising the steps of: operating a primary charger to establish a uniform primary voltage level on an image recording member; developing a control patch on the image recording member, meas... | 12/13/2005 |
| 6943773 | Page flicking mechanism for electronic display devices that paginate content A computing device is provided that includes a display comprising a plurality of discrete elements. A memory is used to store a data collection of paginated content. A processor of the computing device is configured to retrieve each of the pages from the memory. The... | 09/13/2005 |
| 6909856 | Functionality switching for MICR printing An electrographic printing machine (10) operable in combination with an installed one of a plurality of developing, or toning, stations (38a, 38b), is disclosed. Each of the plurality of toning stations (38a, 38 | 06/21/2005 |
| 6400385 | Microchannel print head for electrographic printer Electrographic printing apparatus for forming a toner image on a recording medium includes: a magnetic brush having a rotatable magnetic core and a stationary outer cylindrical shell; a developer supply for supplying a magnetic developer powder to the mag... | 06/04/2002 |
| 6128028 | Heat assisted image formation in receivers having field-driven particles A electronic printing apparatus includes memory for storing a digitized image. A receiver is transported to an image forming position, the receiver including field-driven particles in a matrix that can change reflective density in response to an applied e... | 10/03/2000 |
| 6121986 | Process control for electrophotographic recording An electrostatographic recording apparatus and method includes a primary charger establishing a uniform primary electrostatic voltage level on an image recording member. A recorder imagewise modulates the electrostatic charge on the image recording member... | 09/19/2000 |
| 6091435 | Recording head of electrostatic attraction type image recording apparatus that can reliably prevent damage of needle-like member A recording head includes an ink chamber and a needle-like control electrode provided in the ink chamber. The ink chamber is formed of a substrate and an overhead plate joined to the substrate. The needle-like control electrode is formed horizontal to the... | 07/18/2000 |
| 6057868 | Image forming apparatus A motor drives four final gears provided to four image recording units via a driving belt. Each of the image recording units corresponds to one of yellow, magenta, cyan and black. Each final gear is connected to a rotation axis of a toner feed roller via ... | 05/02/2000 |
| 6049345 | Image forming apparatus selectively charging toner using doctor blade A doctor blade is provided in contact with frictionally charged toner in a toner tank, which regulates the amount of toner held on a toner holder. A charge control unit supplies to the doctor blade a voltage for selectively charging the toner. As a result... | 04/11/2000 |
| 6040847 | Method of recording images and an image-forming device for application of the method A method of and device for recording images on an image-recording medium with a dielectric surface. A voltage is applied in accordance with an image pattern between a set of image-recording electrodes and a companion electrode. Toner powder is deposited o... | 03/21/2000 |
| 6011569 | Method and apparatus for electronically printing on a substrate without a conductive around plane utilizing a donor roller for applying toner A method and apparatus for electronic printing onto a transparent, translucent or opaque substrate. The substrate is of a type which will support an electrostatic image on a surface thereof and which does not have a conductive ground plane affixed to or d... | 01/04/2000 |
| 6002415 | Field effect imaging apparatus using non-conductive non-magnetic toner A method and apparatus are provided for "field effect imaging" of moving substrates, such as webs of paper. Non-conductive, non-magnetic toner having approximately a 5-20 micron mean particle size is electrically charged to a level of at least about 8 mic... | 12/14/1999 |
| 5883656 | Field effect toning method/apparatus A method and apparatus are provided for "field effect imaging" of moving substrates, such as webs of paper. Non-conductive, nonmagnetic toner having approximately a 5-20 micron mean particle size is electrically charged to a level of at least about 8 micr... | 03/16/1999 |
| 5867190 | Image forming unit with control electrodes arranged to be electrically insulated from each other An aperture electrode unit mounted in an image forming apparatus includes a polyimide insulating sheet, plural apertures, substantially T-shaped control electrode portions each of which is provided at a part of the peripheral edge of each aperture, and co... | 02/02/1999 |
| 5818490 | Apparatus and method using variable control signals to improve the print quality of an image recording apparatus The present invention relates to a method for improving the print quality of an image recording apparatus in which charged particles are transported from a particle source and deposited in an image configuration on an information carrier. Variable control... | 10/06/1998 |
| 5812170 | Electrostatic printing method and apparatus employing a whisker write head An electronic printing device is disclosed which uses flexible whiskers to transfer a charge corresponding to an image to a dielectric recording surface. The recording surface preferably has areas of differing conductivity so that microfields form on the ... | 09/22/1998 |
| 5774159 | Direct printing method utilizing continuous deflection and a device for accomplishing the method An apparatus and method provide direct electrostatic printing onto an information carrier. Computer-generated electronic signals define an image and are converted to a pattern of electrostatic fields to selectively control the deposition of charged toner ... | 06/30/1998 |
| 5745144 | Field effect toning method A method and apparatus are provided for "field effect imaging" of moving substrates, such as webs of paper. Non-conductive, non-magnetic toner having approximately a 5-20 micron mean particle size is electrically charged to a level of at least about 8 mic... | 04/28/1998 |
| 5737004 | Process and device for developing an electrostatic latent image A method of developing an electrostatic latent image produced on a surface of a movable intermediate carrier by electrically-charged dielectric color particles which are transported through a gap between the surface of the intermediate carrier and a surfa... | 04/07/1998 |
| 5717449 | Toner projection printer with improved address electrode structure A toner projection printer is provided with a developer surface which manifests a developer bias, and includes a cloud of entrained toner particles. A conductive platen is positioned opposed to the developer surface and manifests a platen voltage that is ... | 02/10/1998 |
| 5684522 | Method of recording information on ferroelectric material using polarization An information recording medium has a semiconductor layer and a ferroelectric layer formed thereon. Information is recorded on the recording medium by locally applying an electric voltage modulated according to the information to the recording medium and ... | 11/04/1997 |
| 5629726 | Image forming apparatus with electrostatically controlled developer particle manipulation An image forming apparatus is provided with a control electrode having a plurality of gates where negatively charged toner passes through, and the control electrode is arranged such that an electrode layer is formed on an insulating layer made of syntheti... | 05/13/1997 |
| 5589867 | Method and apparatus for forming an image on a recording medium An image forming method includes the steps of supplying a toner onto a surface of a toner carrier to form a toner pattern injected with static charge by controlling the toner mass and amount of the static charge using a toner supply control member dispose... | 12/31/1996 |
| 5576742 | Image recording head having corrosion resistant control electrodes An image recording head, for one of a image recording apparatus in which a voltage is applied to fine pattern electrodes to directly record an image on a recording medium and a image recording apparatus in which a voltage is applied to fine pattern electr... | 11/19/1996 |
| 5523777 | Aperture electrode with overlying charge member An insulating layer of an aperture electrode provided in a recording apparatus is formed of polyimide which is liable to be negatively electrified through frictional contact with toner when the toner is negatively chargeable. Further, a charge member whic... | 06/04/1996 |
| 5404155 | Image forming apparatus having an aperture electrode with controlled image potential The pulse width modulation circuit in the image forming apparatus of the invention comprises a discriminate circuit, an on-time control circuit, and an amplification circuit. The discriminate circuit determines whether an imaging potential or a non-imagin... | 04/04/1995 |
| 5402158 | Method for improving the printing quality and repetition accuracy of electrographic printers and a device for accomplishing the method A latent electrical charge pattern of electrical signals is produced by an electrode matrix. Apertures between the electrodes are opened and closed, respectively, to expose electric fields for the attraction of pigment particles of toner against an inform... | 03/28/1995 |
| 5359361 | Image forming apparatus for forming toner images In an image forming apparatus for forming a toner image on image recording medium, an aperture electrode is provided for modulating electrically charged toner particles to be applied on image recording medium to thereby form a toner image on the image rec... | 10/25/1994 |
| 5353105 | Method and apparatus for imaging on a heated intermediate member The present invention is a method and apparatus for printing using an intermediate member acting as a receptor for marking particles representing an image. The marking particles may be deposited directly or indirectly on the member, after which time the m... | 10/04/1994 |
| 5329307 | Image forming apparatus and method of controlling image forming apparatus An image forming apparatus includes a developer supplying roller for supplying to a predetermined print position a developer charged to predetermined polarity, and a print head provided in the print position and having electrode pairs which are respective... | 07/12/1994 |
| 5327169 | Masked magnetic brush direct writing for high speed and color printing Direct electrostatic printing apparatus including structure for delivering developer or toner particles to a printhead forming an integral part of the printing device. The printing device includes, in addition to the printhead, a conductive shoe which is ... | 07/05/1994 |
| 5311266 | Image forming apparatus having particle modulator An image forming apparatus is low priced and has a compact size. The apparatus is further capable of easily controlling toner particles such that the toner particles pass through individual apertures without a high-priced high-voltage A.C. power supply an... | 05/10/1994 |
| 5153616 | Method for recording images A method for recording images includes: arranging a recording medium which is composed of a substrate and an insulating layer provided on the surface thereof and yet constituted movably, and a recording electrode in spaced opposing relationship to provide... | 10/06/1992 |
| 5021810 | Printing machine A printing machine according to the present invention, comprises electrically conductive and magnetically inductive printing toner, an array of electrode-needles contacting with toner, each of the electrode-needles arranged apart from the adjacent electro... | 06/04/1991 |
| 4977415 | Electrostatic recording head, image recording apparatus, developing agent supplying device, display device and method of producing electrostatic recording head An electrostatic recording head for causing a developing agent to be electrostatically deposited on the surface of a recording member in accordance with a recorded image, comprising a recording electrode having a plurality of linear electrodes arranged in... | 12/11/1990 |
| 4873540 | Image recording method A method of forming an image comprising the steps of: (a) arranging a plurality of recording electrodes opposite to a movable recording member having an insulating layer on the surface, thereby forming a recording area between the insulating layer and the... | 10/10/1989 |
