Class 399/153 - Simultaneous charging and exposure

Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein an apparatus is provided for applying
No. of patents: 38
Last issue date: 07/15/2008

Number	Title	Issue Date
7399563	Electrophotographic photoconductor, and image forming process, image forming apparatus and process cartridge for an image forming apparatus using the same Disclosed is an electrophotographic photoconductor including at least a photoconductive layer on an electroconductive substrate, which comprises at least a cross-linked surface layer formed by curing a tri- or more-functional radical polymerizable monomer without ha...	07/15/2008
7175712	Light emitting apparatus and method for curing inks, coatings and adhesives A UV curing apparatus and method is provided for enhancing the distribution and application of UV light to UV photo initiators in a UV curable ink, coating or adhesive. The UV curing apparatus and method comprises UV LED assemblies in a first row with the UV LED ass...	02/13/2007
7071960	Image forming apparatus Electron generating devices and LED arrays are arranged in a surrounding area of a photosensitive drum. The electron generating devices are located downstream of a cleaner and upstream of a developing unit with respect to a turning direction of the photosensitive dr...	07/04/2006
7015938	Charging system Light emitted from an entire surface of a light source is passed selectively through a liquid crystal shutter. The shutter can be controlled to open/close on a pixel basis in response to image data and then selectively passed light is converted into light having a s...	03/21/2006
6718149	Liquid crystal display panel having frame area formed with vernier in non-transparent conductive connector An active matrix liquid crystal display panel has a pair of substrate structure and liquid crystal confined in a space between the substrate structures; non-transparent signal terminals and non-transparent connectors are formed in the frame area of one of the substr...	04/06/2004
6233416	Electrophotography with AC erasing of latent image An image-forming apparatus includes a photosensitive member having a gamma for latent image of 3 or more, electrification facilities, light exposure facilities, image development facilities, image transfer facilities, cleaning facilities, and a charge era...	05/15/2001
5932385	Electrophotographic copying method and electrophotographic copying machine used in the method An electrophotographic copying method, which comprises conducting each process of at least charging, exposing to light, developing and transferring, characterized in that the photoreceptor has at least an undercoat layer and a photosensitive layer on an e...	08/03/1999
5608497	Electrophotographic color image forming apparatus In an apparatus in which a yellow, magenta, and cyan toner images are superimposed on a photoreceptor drum made of a transparent material, an image exposure device is provided in the photoreceptor drum and emits exposure lights whose wavelength has a spec...	03/04/1997
5606398	Reduction of residual potential and ghosting in a photoconductor A system and method for reducing residual electrostatic potential and ghosting in a photoconductor alleviates the problems of low optical density and ghosting. A charge is applied to a surface of the photoconductor, and the photoconductor is exposed to co...	02/25/1997
5512983	Electrophotographing apparatus with first and second charge devices This invention relates to an electrophotography apparatus with a photosensitive body, first charge devices for performing a first charge process to form an image on the photosensitive body, a transfer charger for transferring the image formed on the photo...	04/30/1996
5452074	Process color and recharge with the overcoated P/R single pass color process A method and apparatus for forming orthographic color images is disclosed. A relatively high resolution ROS is utilized to simultaneously form a plurality full contrast images thereby yielding the registration precision available in tri-level imaging whil...	09/19/1995
5396315	Electrophotographic printing machine An electrophotographic printing machine is provided with a photoreceptor whereon a transparent electrically conductive layer and a photoconductive layer are successively formed. A visible image is formed on the photoconductive layer by exposing the photoc...	03/07/1995
5307121	Bi-functional charge neutralizer for electrostatographic copier/printer An electrostatographic copier/printer, preferably of the type in which toner images are thermally transferred from an image-recording element to an image receiver sheet, includes an electrostatic charge generator, preferably an AC corona charger, which is...	04/26/1994
5008707	Simultaneous charging and exposure for pictorial quality Apparatus and method for forming an electrostatic latent image on an imaging member having a photoconductive insulating layer has a voltage sensitive corona charging device with a corona generating electrode and a control electrode positioned in charging ...	04/16/1991
4565436	Electrophotographic copying process An electrophotographic process and apparatus for performing the process which employs an electrophotographic photosensitive member of a basic construction in which a photoconductive layer and a transparent insulator layer are sequentially laminated on the...	01/21/1986
4551003	Electrophotographic process and apparatus therefor This invention presents a process and an apparatus for repeatedly forming a high contrast image on a photosensitive member substantially comprising a conductive layer a photoconductive layer and an insulating layer. According to this invention, during the...	11/05/1985
4494856	Electrophotographic method and apparatus for providing accurate half-tone images An electrophotographic method and apparatus is disclosed which is able to faithfully reproduce the half-tone portion of an original image on a photosensitive medium having an electroconductive layer, a photoconductive layer and an insulating surface layer...	01/22/1985
4494857	Imaging method using a charged insulating layer An electrophotographic imaging method comprises a first process for charging an electrically insulating layer formed on the surface of a photosensitive drum, and a second process for image-exposing the charged insulating layer to form an electrostatic lat...	01/22/1985
4457993	Electrophotographic process of retention type An electrophotographic process for forming a given number of copies of an original once formed on a photosensitive member including a conductive drum, a photoconductive layer applied on the drum and an insulating layer applied on the photoconductive layer...	07/03/1984
4445772	Electronic photographing device An electrophotographic device wherein an image is formed by exposing a movable photosensitive member to an optical image, wherein such member includes a conductive layer, a photoconductive layer, and an insulating layer. A primary corona discharger of pre...	05/01/1984
4442191	Electrophotographic copying process for producing a plurality of copies An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photose...	04/10/1984
4440844	Electrophotographic copying process involving simultaneous charging and imaging An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photose...	04/03/1984
4440843	Electrophotographic copying process for forming positive or negative images An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photose...	04/03/1984
4433038	Electrophotographic copying process involving simultaneous charging and imaging An electrophotographic copying process utilizes a photosensitive member for electrophotography which comprises a first and a second photoconductive layer which are sensitive to radiation of a first and a second wavelength region, respectively. The photose...	02/21/1984
4290690	Device for controlling potential of latent image for use in electrophotographic apparatus A method and apparatus of electrophotography wherein before exposure of a photosensitive element to a light image the element is subjected to a substantially uniform light irradiation to release a part of the charge carriers trapped in a photoconductive l...	09/22/1981
4288514	Method for controlling image formation in electrophotography by pre-exposure step A photosensitive member is exposed to light prior to primary charging so that the surface potential applied by primary charging may always be maintained at a constant level to which the photosensitive member is always charged when it is repetitively used ...	09/08/1981
4276829	Mechano-electrostatic charge-imaging method and apparatus The method of forming a charge-image on a charge-retaining object by applying an electrical image-activating energy and a mechanical image-activating energy in a manner to result in the functional dependence of the charge density of the consequent charge-...	07/07/1981
4268161	Electrophotographic apparatus with corona discharge control An electrophotographic apparatus includes a photosensitive member with a conductive layer, a photoconductive layer and an insulating layer; a variably controlled primary corona discharger for applying a charge of a predetermined potential onto the surface...	05/19/1981
4179290	Photoelectrophoretic photography process involving dual corona treatments of opposite polarity A photoelectrophoretic image-forming process utilizing a pair of electrodes with at least one of the electrodes being transparent and at least one of the electrodes having an electrically insulating surface, which comprises the following steps of: (1) for...	12/18/1979
4175955	Electrophotographic processes using a pre-exposure An electrophotographic process including the step of pre-exposing the surface of a photosensitive member to light at an exposure of no less than 103 lx-sec, followed by the uniform charging of the same. The photosensitivity of this type photose...	11/27/1979
4145136	Scanning system for an electrostatic copying apparatus A copying apparatus having a stationary or movable original to be copied, a lens movable parallel to the original and perpendicular to its optical axis, a photosensitive medium movable parallel to the lens and a flash lamp device for illuminating the enti...	03/20/1979
4136942	Electrophotographic apparatus An electrophotographic apparatus constructed with a photosensitive body, a primary charger to apply a substantially uniform primary charge to the photosensitive body, a secondary corona discharger to apply to the photoconductive body either an AC corona d...	01/30/1979
4052206	Electrophotography Electrophotography which employs a recording medium prepared by providing a photoconductor layer and a transparent electrical insulator layer on a support. In the electrophotography, a latent charge image is formed on the surface of the insulator layer of...	10/04/1977
4026700	Charged particle modulator device and improved imaging methods for use thereof A three-layered modulator, made up by sandwiching a photoconducting layer between a metal screen and an insulating layer, is applied separate and distinct fringing fields across the insulating layer corresponding to the image and non-image portions. The p...	05/31/1977
4022527	Ion modulator having independently controllable bias electrode An ion modulator having a bias electrode which is independently controllable improves the modulation and focusing of projected ions. Such a modulator is constructed so as to reduce the adverse effects of corona discharge upon the modulator....	05/10/1977
3990791	Image forming apparatus for forming positive and negative images In an image forming apparatus for selectively reproducing positive and negative electrostatic latent images corresponding to an original image, there is provided a photosensitive medium having an insulating layer on its surface, a first charger capable of...	11/09/1976
3972714	Method for electrostatic reproduction by charge transfer Method and apparatus for electrostatic reproduction of originals by transfer of a latent charge image from an intermediate surface to an uncharged insulating surface by moving the intermediate and insulating surfaces to a virtual contact point and produci...	08/03/1976
3963340	Imaging apparatus for typewriter employing electrostatic printing process Imaging apparatus which employs MANIFOLD imaging techniques and reusable loops to create a marking material image and transfer it to a receiving medium. The apparatus may be employed in a printer having keyboard input and an elongate platen supporting a r...	06/15/1976

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Class 399/153 - Simultaneous charging and exposure