Abstract: An adhesive having polyamide and an electrically conductive filler dispersed or contained therein, for use in bonding components of electrostatographic, contact electrostatic, digital and other like printing machines.
Type:
Application
Filed:
April 11, 2001
Publication date:
November 28, 2002
Applicant:
Xerox Corporation
Inventors:
Ralph A. Mosher, T. Edwin Freeman, Theodore Lovallo, Damodar M. Pai, John F. Yanus, Timothy J. Fuller, Markus R. Silverstri, Gerald M. Fletcher, Antonio DeCrescentis, Ihor W. Tarnawskyj
Abstract: An ink jet recording head and an ink jet recording apparatus used this head, in which ejectors are arrayed in a two-dimensional matrix, and the necessary width of each of plural common ink branch paths is reduced, and the density arraying the ejectors is made to be high, are provided. The ink jet recording head is formed by layering and adhering a nozzle plate, a common ink path plate, an ink supplying plate, a connecting path plate, a pressure chamber plate, a vibration plate, and piezoelectric actuators. The ink supplying plate is made of a resin film whose stiffness is low. Since the ink supplying plate also works as air dampers for the plural common ink branch paths, even when the width of each of the plural common ink branch paths is made to narrow, necessary and sufficient acoustic capacitance to prevent crosstalk from generating between adjacent two ejectors can be obtained. With this structure, the density arraying the ejectors is able to be high.
Abstract: A printed wiring board is provided which can be applied even to circuit boards operating at high speed, and which can suppress electromagnetic wave radiation, and which can suppress a deterioration in density of mounting. At the printed wiring board, a first signal wire layer, a first ground layer having a first power source wire, a second ground layer having a second power source wire, and a second signal wire layer, are laminated. The first ground layer and the second ground layer are interlayer-connected by many via holes. Return current, of signal current flowing through a signal wire, flows in the first ground layer, and a path of the return current is cut midway therealong at a position of the first power source wire. However, the return current is detoured by the via hole to the second ground layer, and flows thereat.
Abstract: An apparatus which controls the dispensing in mixing of marking particles into a developer unit used in an electrophotograhic printing machine. In particular, the present invention is directed to a developer housing that includes a variable speed mixing apparatus for improving material life and performance. The quantity of marking particles required to reproduce the document is predicted and the dispensing and mixing of marking particles controlled in response thereto.
Abstract: A printing apparatus includes a transfuse member, an intermediate transfer member and a transfer member assembly having a transfer member that electrostatically transfers a toner image from the intermediate transfer member to the transfuse member. The transfer member includes at least one temperature control device that maintains the transfer member within a predefined range. A controller assembly may be connected to the at least one temperature control device for extending the electrical life of the transfer member assembly by maintaining the transfer member at a substantially constant resistivity.
Type:
Application
Filed:
May 25, 2001
Publication date:
November 28, 2002
Applicant:
XEROX CORPORATION
Inventors:
Gerald M. Fletcher, Edward L. Schlueter, Shawn R. Rowan, Eugene J. Fina
Abstract: A method and apparatus is presented for registering a plurality of color images formed on a photoconductive surface in a process direction. According to one embodiment of the invention, the registration simplified by the use of a method that does not require the use of a controller having a divide function. According to another embodiment of the invention, an apparatus is presented to compensate for variations in distances between a rotating polygon and a sensor detecting a position of a photoconductive member.
Abstract: A buffer layer and an optical waveguide layer are formed on a single crystal substrate. A ridge type channel optical waveguide is formed at the optical waveguide layer along a longitudinal direction of the single crystal substrate. A cladding layer having a refractive index smaller than that of the optical waveguide layer and having a width substantially the same as that of the channel optical waveguide and having a thickness which increases in a tapered manner toward an end surface, is formed above both of a light entering end portion and a light exiting end portion of the channel optical waveguide. By the cladding layer, a mode field diameter in a direction orthogonal to a substrate surface can be enlarged, and a coupling loss with an optical fiber can be greatly reduced. Further, loss due to mode mismatching can be prevented by a light confining effect.
Abstract: A plurality of columns of through holes 3 are formed in at least one of flat belts 1 along a travel direction thereof and a plurality of columns of projections 4 fitting to the through holes 3 of the flat belt 1 are provided on at least one of tension members 2 over which the flat belt 1 is worn, along a rotation direction thereof.
Abstract: Color scanners that separate multi-wavelength light into color components having substantially equal optical path lengths. An colorscanner includes a first prism that receives multi-wavelength light, internally reflects a first component and passes second and third components into a first gap. A first reflector reflects the second and third components back into the first prism. The component parts then pass into a second prism that internally reflects the first and second component parts but passes the third component into a second gap. A second reflector reflects the third component part back into the second prism. A third prism then receives the color components, internally reflects the third component part, and passes the first and second component parts into a third gap. A third reflector reflects the first and second component parts back into the third prism.
Abstract: An apparatus for fabricating bichromal elements comprising a separator member having a central rotating point, the separator member having first and second spaced apart, opposed surfaces with an edge region in contact with both of said opposed surfaces. The spacing between the opposed surfaces varies with the distance outwardly from the central rotating point such that the spacing is the largest at the central rotating point and the spacing decreases outwards from the central rotating point and the spacing is a minimum at the edge region. Further each of the opposed surfaces has a substantially annular cup spaced apart from and substantially surrounding the central rotating point.
Abstract: A method of refreshing a sticky cleaner used for cleaning a fuser member in an electrophotographic printer is disclosed. The method includes the steps of precoating the cleaner member with a low cost polymer toner material prior to a printing operation removing contaminants from the sticky surface of the cleaner member. A refreshed cleaning member prior to being used to clean a fuser in an electrophotographic printer in accordance with the features of the present invention includes a surface cleaning member having minimal contaminants thereon, and a coating of a plastic toner material that can become tacky at the operating cleaner temperatures.
Abstract: A method to greatly simplify and reduce the cost of displays when all of the images that need to be displayed are known beforehand. By precomputing the intersections of the images and addressing the intersections of the images, the number of drivers that are required becomes a function of the number of images rather than a function of the resolution. For example, four arbitrarily complex, overlapping images require, at most, 16 drivers. In general, n arbitrarily complex, overlapping images require, at most, 2n drivers. This result holds irrespective of the size of the display or the complexity resolution, or amount of overlap of the images. Further reduction of the number of drivers is possible if some of the images do not overlap some of the other images. For example, two images overlap each other in one area and two other images may overlap each other in a separate area while the two sets of images do not themselves overlap.
Abstract: A system for improving the uniformity of ink droplets delivered from a plurality of droplet sources on a printhead is described. The system includes a cooling system that compensates for nonuniform heating effects in a printhead which results in nonuniform temperatures. The distribution of the cooling system, and the effectiveness of the cooling system is set to maintain an approximately uniform ink temperature across the printhead.
Type:
Grant
Filed:
October 28, 1999
Date of Patent:
November 26, 2002
Assignee:
Xerox Corporation
Inventors:
Scott A. Elrod, Joy Roy, Richard G. Stearns, John S. Fitch
Abstract: An image forming system having two simplex print engines is provided that transfers and fuses two images on either side of a substrate in a single nip. The two images can be formed simultaneously at the single nip.
Type:
Grant
Filed:
January 24, 2001
Date of Patent:
November 26, 2002
Assignee:
Xerox Corporation
Inventors:
Sotos M. Theodoulou, Robert A. Moore, Wojciech Zalewski, Sarbjit Parhar, Jeffrey P. Belbeck
Abstract: A micro-structure template for fabricating ordered arrays of particles includes a top surface and a bottom surface, with the top surface having a plurality of closely-spaced depressions. Particles are disposed in the closely-spaced depressions to form at least one layer of particles.
Abstract: A method and system updates individualized calibrated tone-reproduction curves. A plurality of predetermined stored calibrated tone-reproduction curves are used, each predetermined stored calibrated tone-reproduction curve corresponding to a distinct media type and halftone type combination along with a plurality of predetermined relationships between each stored calibrated tone-reproduction curve and a reference media type and reference halftone type combination. A new tone-reproduction curve corresponding to a reference media type and reference halftone type combination calibration operation is generated, and each predetermined stored calibrated tone-reproduction curves based on the newly generated tone-reproduction curve corresponding to the reference media type and reference halftone type combination and the plurality of predetermined relationships between each stored calibrated tone-reproduction curve and the reference media type and reference halftone type combination is updated.
Abstract: A display system for displaying lists of linked documents. The present invention is implemented for displaying lists of related pages downloaded from the World Wide Web. The list of pages is displayed in a book metaphor termed a WebBook. The book metaphor is desirable since it inherently conveys the notion of the pages being related. When displayed, two active pages are displayed at one time. For the WebBook, each page in the list is converted into a page object and will represent a left or right page. Page objects representing a left page will have an axis of rotation along a right edge (as viewed orthogonally) while page objects representing a right page will have an axis of rotation along a left edge (as viewed orthogonally). The changing of pages is animated. Various user interface controls are provided for traversing the pages of the book, creating book marks, scanning pages, scaling the contents of a page, scrolling through pages, etc.
Abstract: Disclosed is a process for bonding a first article to a second article which comprises (a) providing a first article comprising a polymer having photosensitivity-imparting substituents; (b) providing a second article comprising metal, plasma nitride, silicon, or glass; (c) applying to at least one of the first article and the second article an adhesion promoter selected from silanes, titanates, or zirconates having (i) alkoxy, aryloxy, or arylalkyloxy functional groups and (ii) functional groups including at least one photosensitive aliphatic >C═C< linkage; (d) placing the first article in contact with the second article; and (e) exposing the first article, second article, and adhesion promoter to radiation, thereby bonding the first article to the second article with the adhesion promote. In one embodiment of the present invention, the adhesion promoter is employed in microelectrical mechanical systems such as thermal ink jet printheads.
Abstract: Disclosed is a toner comprising particles of a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process. Another embodiment of the present invention is directed to a process which comprises (a) generating an electrostatic latent image on an imaging member, and (b) developing the latent image by contacting the imaging member with charged toner particles comprising a vinyl resin, an optional colorant, and poly(3,4-ethylenedioxypyrrole), wherein said toner particles are prepared by an emulsion aggregation process.
Type:
Grant
Filed:
November 28, 2000
Date of Patent:
November 26, 2002
Assignee:
Xerox Corporation
Inventors:
Karen A. Moffat, Maria N. V. McDougall, Rina Carlini, Dan A. Hays, Jack T. LeStrange, Paul J. Gerroir
Abstract: The invention provides automatic machinery with the capability to communicate to an operator or technician or other machine user with a description of a machine condition, such as, for example, a machine problem, if the machine requires attention.