Abstract: A spring force applying blade device for exhibiting a reduced creep rate when bent in a force applying application. The spring force applying device includes a guide member for supporting a blade member. The guide member has a curved portion for supporting a blade member bent thereover for applying a force. The spring force applying blade device also includes a spring blade member that has a first edge that is attached to the guide member, and a second and opposite edge for applying a force when bent over the curved portion of the guide member. The blade member is comprised of a plurality of blade layers for reducing stress and for reducing a creep rate of the blade member when bent over the curved portion of the guide member in a force applying application. The plurality of blade layers are attached together at the first edge of the blade member and are free to slide relative to each other at the second and opposite edge.
Abstract: A transfusing member having a compression layer comprised of a highly conformable, low durometer material with a low surface tension. The transfusing member forms a first transfer nip characterized by a first pressure with a photoreceptive surface and a second transfer nip characterized by a second pressure, which is of the same order of magnitude as the first pressure, with a backup roller.
Abstract: An embedded data block for storing machine readable information on a recording medium has a lattice-like sync frame which defines the outer boundaries of individual, fixed-size frame blocks. Flags, which are encoded by embedded data characters on the sync frame, indicate whether there are any special processing instructions (e.g., user-specific or application-specific instructions for customizing the processing of the data block) encoded within the frame blocks.
Abstract: An FSM data structure is encoded by generating a transition unit of data corresponding to each transition which leads ultimately to a final state of the FSM. Information about the states is included in the transition units, so that the encoded data structure can be written without state units of data. The incoming transition units to a final state each contain an indication of finality. The incoming transition units to a state which has no outgoing transition units each contain a branch ending indication. The outgoing transition units of each state are ordered into a comparison sequence for comparison with a received element, and all but the last outgoing transition unit contain an alternative indication of a subsequent alternative outgoing transition.
Abstract: An apparatus in which a rotabably mounted donor roll advances toner to an electrostatic latent image recorded on a photoconductive surface. The donor roll has a plurality of conductive electrodes mounted thereon which rotate in unison therewith. A resistive disk is connected electrically to each of the conductive electrodes. The resistive disk also rotates in unison with the donor roll. An electrically conductive brush is in sliding contact with the resistive member. A voltage source, mounted stationarily, is coupled electrically to the resistive member. The voltage applied to each conductive electrode varies as a function of the distance between the voltage source and that conductive electrode.
Abstract: A device is provided for storing a supply of particles for use in a developer unit of an electrophotographic printing machine. The device includes an open ended container which has a chamber in communication with the open end of the container. The particles are stored in the chamber of the container. The device also includes a feature associated with the container which extends substantially the length of the container, for urging the marking particles in the chamber toward the center of the chamber.
Type:
Grant
Filed:
January 11, 1996
Date of Patent:
March 18, 1997
Assignee:
Xerox Corporation
Inventors:
Murray O. Meetze, Jr., Rhonda L. Staudt, Timothy G. Struczewski
Abstract: A toner composition for electrostatic charge development having high cleaning property and inhibiting wear of a photoreceptor, filming and deletion. The toner composition comprises toner particles and fluorine-containing cerium oxide fine particles added to the toner particles. The fluorine content of the fluorine-containing cerium oxide fine particles is from 0.1 to 10% by weight. The toner composition is used in an image forming process comprising the steps of (a) charging a latent image carrier, (b) forming an electrostatic latent image on the latent image carrier, (c) developing the electrostatic latent images with a developing agent to form a toner image, (d) transferring the resulting toner image to a receiving material, and (e) removing a toner remaining on the latent image carrier.
Abstract: An electrostatic charge developing toner composition comprising (i) toner particles containing a low-molecular weight polypropylene wax and/or a low-molecular weight polyethylene wax, having a volume average particle size of from 4 to 9 .mu.m, and an exposed amount (X% by weight) of the wax on the surface of the toner in the range of 40.ltoreq.X.ltoreq.65, and (ii) abrasive fine particles having an average particle size of from 0.5 to 5.5 .mu.m, and an image-forming process using the toner.By the toner composition, the occurrence of filming with the wax in the toner particles is prevented and images excellent in the development stability with the passage of time can be formed.
Abstract: An image forming apparatus which prevents the toner image, which is transferred onto the recording sheet but not yet fixed thereto, from being scattered, by reducing the amount of the charge, which is generated by the pre-cleaning charge removal means and attaches to a recording sheet on a transfer-member supporting member after it passes the image transfer stage. In the image forming apparatus, a recording sheet is transported in a state that it is electrostatically attracted onto a drum sheet, a toner image is formed on a photoreceptor drum in accordance with image information, and the toner image is transferred from the photoreceptor drum onto the recording sheet by using a transfer corotron disposed on the rear side of the drum sheet.
Abstract: A circuit for performing high-speed 90 and 270 degree rotations of an uncompressed image in a page buffer. The rotation is performed as the data is written into and read from the page buffer, thus requiring no additional time. A special memory mapping technique is used to make efficient use of the page buffer memory.
Abstract: A printing system using a recharge, expose and development image on image process color system is disclosed in which there is an optional extra black development step. The printing system may be a single pass system where all of the colors are developed in a single pass or a multi-pass system where each color is developed in a separate pass. The additional black development step results in optimal color quality with black toner being developed in a first and/or last sequence. Having more than one black development station allows low gloss and high gloss black toner to be applied to the same image, enabling the very desirable combination of low gloss text and high gloss pictorials on the same page.
Abstract: An electrophotographic imaging member including a substrate, a hole blocking layer comprising hydrolyzed metal alkoxide or aryloxide molecules and a film forming alcohol soluble nylon polymer, an optional interface adhesive layer, a charge generating layer, and a charge transport layer.
Abstract: An ink jet recording device is disclosed, comprising:recording heads for ejecting ink and printing on recording media;a carriage member having said recording heads and moving reciprocatingly between a printing region and a non-printing region; anda cleaning member for cleaning a (front) surface, which has nozzles, of said recording heads by contacting with said surface when said carriage member enters said non-printing region, andsaid cleaning member moving to a position at which said cleaning member is capable of contacting with said surface, which has said nozzles, of said recording heads, linking with a movement, which is for entering said non-printing region, of said carriage member, and moving to a position at which said cleaning member does not contract with said surface, which has said nozzles, of said recording heads, linking with the passage of an engaging portion of carriage side at a position of a projecting engaging portion of blade holder side when said carriage member is moved from said non-prin
Abstract: An interface connector device having two assemblies for interconnecting a plurality of input/output devices to a multi-wire bus. The first assembly is electrically connected directly to the multi-wire bus and the second is carried on the first assembly and supports an IC chip. The second assembly includes electrical connections for connecting the input and output devices to the IC chip and for connecting the multi-wire bus to the IC chip for conveying the signals between the multi-wire bus and the input and output devices. The second assembly incorporates a single molded piece including a molded socket for receiving the IC chip, a set of molded pins adapted to receive conductive coatings for electrically connecting the input and output devices to the IC chip, and molded positioning elements for orienting the second assembly with respect to the first assembly.
Abstract: Printing machines and systems which incorporate recharging stations comprised of two corona generating devices which act together to recharge a previously developed photoreceptor to a predetermined potential. The first corona generating device recharges the photoreceptor's surface to a greater absolute potential than a predetermined potential which the surface is to have after being recharged. The second corona generating device reduces the photoreceptor's surface to the potential that it is to have. The second corona generating device is comprised of a plurality of spaced apart coronodes which each can impress charges on the photoreceptor's surface. The second corona generating device receives electrical inputs and applies DC potentials to the coronodes such that adjacent coronodes have opposite polarities.
Abstract: An apparatus and method for creating color images which are coated with a composition including a lightfastness inducing material and a hydrophobic polymeric binder which protects the images from rough handling and degradation from exposure to UV radation in the light.
Abstract: An apparatus and method for depositing a surface charge on a dielectric medium moving at a predetermine velocity in a direction of movement, including an endless web having an exterior layer comprising piezoelectric material, position adjacent to the dielectric medium, for generating and laying down the surface charge on the dielectric medium in response to the endless web being deformed.
Abstract: An apparatus for producing a color image on a sheet member including an electrographic master having a representative of at least two color components of the color image. A transfer system is provided for transferring at least two color components of the color image from the electrographic master to a sheet member. A development system is provided for sequentially developing said at least two color components of the color image in a predetermined alignment on the electrographic master.
Abstract: A maintenance apparatus for maintaining an ink jet printhead. The maintenance apparatus includes a maintenance station having a first member, a translation apparatus connected to the maintenance station which generates a translation force to translate the maintenance station along a path, and a displacement apparatus connected to the translation apparatus and operatively coupled to the first member for displacing the first member with respect to the translation apparatus. The maintenance apparatus minimizes system complexity by using the energy which translates the maintenance station for extending and retracting the capping member which seals the area around the front nozzle face of an ink jet printhead during periods of non-use. A lead screw and a motor move the maintenance station in a direction towards an ink jet printhead for maintenance operations and a actuating lever and camming system move the capping member into contact with the front face of the ink jet printhead.
Abstract: In a circuit for rotating a digital image any multiple of ninety degrees, an addressing method which reduces the number of address lines required. The rotation circuit relies on a memory configuation which can access each image pixel in memory individually, and this normally requires a large number of address lines. This invention takes advantage of the periodic nature of the data being accessed to reduce the number of address lines required.