Abstract: A method for controlling print speed of an imaging device is provided. The imaging device includes at least one reservoir for supplying liquid ink to a print head and a level sensor in the reservoir. The method comprises measuring an image density of at least a portion of a print job for the imaging device. A state of a level sensor in a print head reservoir is detected. The print speed is adjusted to a target speed in response to the level sensor indicating an open loop state. The target speed is a function of the image density. The print speed is adjusted to a default speed in response to the level sensor indicating a closed loop state.
Type:
Grant
Filed:
October 20, 2006
Date of Patent:
November 16, 2010
Assignee:
Xerox Corporation
Inventors:
Austin Lloyd Richards, William Bruce Weaver, Michael Kenneth Oehl
Abstract: Identifying the substrate type of a target substrate before patterning by a marking engine produces an opportunity to adjust the marking engine. The adjustments can enable the marking engine to produce higher quality work. The target substrate's substrate type can be automatically identified by obtaining its characteristics and submitting them to a classifier. A spectrophotometer can measure a substrates reflectance spectrum, which is a good characteristic for use in classifying. Classifiers can be based on known distance or correlation measures.
Type:
Grant
Filed:
May 2, 2005
Date of Patent:
November 16, 2010
Assignee:
Xerox Corporation
Inventors:
Lalit K. Mestha, Raja Bala, Reiner Eschbach
Abstract: An information presentation system for supporting interactions based on presentation of various pieces of information in a scene where persons face each other, the information presentation system includes: a plurality of display record media, each having a unique identifier, where display information can be rewritten; an information selection section that selects information to be displayed on the display record medium; an information rewrite section that is detachably attached to the display record medium, and that rewritably writes the information selected by the information selection section to the display record medium in a state where the display record medium is attached to the information rewrite section; a history storage section that records a history of the information in association with the unique identifier of the display record medium; and a manipulation detection section that detects a selective manipulation of a user on the display record medium.
Abstract: A method and apparatus for correcting banding defects in a photoreceptor image forming apparatus. The method or apparatus may form one or more images using one or more laser beams to alter an electrostatic charge on a photoreceptor, check the one or more images for one or more sets of image perfections arising from electric field attenuation in the photoreceptor, and compensate for the electric field attenuation. The method or apparatus may further form a compensated image.
Abstract: Use of a wax in a toner, such as carnauba wax, to give an increase in charge control agent in a toner, such as a magenta toner, to give an increased glass transition temperature is disclosed. The toner may contain a resin comprising amorphous and crystalline polyesters to provide good low melt characteristics.
Abstract: An image writing/display device has a voltage applying section, a pressure applying section, an initialization controlling section, and an image writing controlling section. In a state in which a display medium having a pair of electrodes and a display layer that is sandwiched between the pair of electrodes and whose reflectance is changed is positioned, the voltage applying section applies voltage to the pair of electrodes for changing the reflectance of the display layer. The pressure applying section applies pressure for changing the reflectance of the display layer. The initialization controlling section makes the display layer a uniform reflectance by applying pressure to the display layer with the pressure applying section. The image writing controlling section writes an image by applying data voltage from the voltage applying section to specific regions, that correspond to image data, of the display layer between the pair of electrodes.
Abstract: A developing device includes: a developer carrier; a first housing chamber; a second housing chamber; a first inflow portion; a first conveying member; a second conveying member; and a concentration detecting member.
Abstract: Non-aqueous disperson compositions, such as ink compositions, contain a polymeric dispersant, a polymeric resin, an organic liquid, and a nanoscale pigment particle composition including an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.
Type:
Grant
Filed:
November 1, 2007
Date of Patent:
November 16, 2010
Assignee:
Xerox Corporation
Inventors:
Rina Carlini, C. Geoffrey Allen, Sandra J. Gardner
Abstract: A document publishing system includes a layout quality tagger (40) for tagging candidate layouts (36) of selected content (32) with overall layout quality criterion values using an overall layout quality criterion (16, 18) combining a set of component quality criteria as a weighted linear combination of kernels. Each kernel corresponds to an inner product comparing component quality criteria values of a training layout with corresponding component quality criteria an input layout. A trainer (14) trains the overall layout quality criterion using the training layouts (12). A layout selector (42) validates a layout for the selected content (32) based at least on the tagged overall layout quality criterion value of the layout. A publisher (50, 52, 54) publishes the validated layout (44) including the selected content (32).
Abstract: A developing device includes a first developer containing chamber, a second developer containing chamber, a first inflow section, a second inflow section, a first conveyance member and a second conveyance member. The first inflow section allows the developer to flow from the second developer containing chamber into the first developer containing chamber. The second inflow section allows the developer to flow from the first developer containing chamber into the second developer containing chamber. The first conveyance member conveys the developer contained in the first developer containing chamber in a first developer conveyance direction. The second conveyance member conveys the developer contained in the second developer containing chamber in a second developer conveyance direction.
Abstract: What is disclosed is a novel system and method for determining real-time performance in a sub-assembly device that is driven by a dc motor. In one example embodiment, an electric motor is energized such that a sub-assembly driven by the motor achieves a target operating speed. Pulse width modulation data is captured and plotted along a time axis. A time duration when the sub-assembly device ended a startup operation and achieved a steady state operation is determined. A portion of the plotted data is then compared to an ideal plot defined for that sub-assembly device. Based on the result of that comparison, a determination is made whether the sub-assembly device is performing within accepted operational parameters. A maintenance operation is signaled to be performed in response to the determined sub-assembly operational performance. The data is stored in a historical database from which a preventative maintenance schedule can be derived.
Type:
Grant
Filed:
May 12, 2008
Date of Patent:
November 16, 2010
Assignee:
Xerox Corporation
Inventors:
Salvatore A. Abbata, Stephen O'Leyar, Kevin M. Carolan
Abstract: A liquid crystal-containing composition and a liquid crystal display device including the same, the liquid crystal-containing composition including a cholesteric liquid crystal and microcapsules containing the cholesteric liquid crystal, and having a wall component comprising at least one selected from the group consisting of polyurethane and polyurea, the wall component further including a first isocyanurate component having a cyclo ring structure and a second isocyanate component other than the first isocyanurate component.
Abstract: Stacker carts for stacking media, printing apparatuses, and methods of stacking media on stacker carts are disclosed. An embodiment of the stacker carts includes a stacking surface including a first end and an opposite second end, the stacking surface sloping downwardly from the first end toward the second end; and a resiliently-biased stop at the second end of the stacking surface, the stop including at least one contact surface defining a height of the stop above the second end of the stacking surface. When the contact surface is in contact with a first surface, a height of the stop (i) decreases as the stacker cart is moved toward the first surface, and (ii) increases as the stacker cart is moved away from the first surface.
Abstract: A system evaluates file metadata for files maintained in the secondary storage of a host system to determine whether one or more image files are to be downgraded. The image files selected for downgrading are reduced in size by one or more downgrading operations. The resulting file is stored in secondary storage so an image file remains in secondary storage that does not require the memory space of the previous image file. The downgrade operations may include lossless compression, lossy compression, bit depth reduction, resolution reduction, color palette, binary imaging, or a combination of a plurality of downgrade operations.
Abstract: There is proposed a hologram recording method that includes: generating signal light by superimposing a periodic intensity distribution or phase distribution on an intensity distribution of light that expresses binary digital data as a light/dark image; Fourier transforming the signal light; illuminating Fourier transformed signal light and reference light simultaneously on an optical recording medium; and recording the signal light as a hologram.
Abstract: An encoder position signal processing system comprises an analog encoder reader and a codewheel. The codewheel possesses an optical track that modulates the quadrature encoder signal amplitude in order to generate an amplitude change (home pulse) once per revolution of the codewheel. The analog encoder reader outputs a quadrature signal comprised of sine and cosine signals. The quadrature signal is converted to a magnitude signal that is sampled in order to generate a rate of change (ROC) signal, which increases the signal-to-noise ratio. An algorithm using the characteristic shape of the ROC home pulse signal can then be applied to the ROC signal to increases robustness of detecting the home pulse.
Type:
Grant
Filed:
June 23, 2008
Date of Patent:
November 16, 2010
Assignee:
Xerox Corporation
Inventors:
Michael Eugene Jones, David Douglas Martenson
Abstract: A method and device for printing a full color image containing at least one object onto a highlight color printer without mixing highlight color and black for any one object. Inputting a full color image containing at least one object to be printed onto a highlight color printer. The highlight color printer prints each object of the full color image as an object containing only highlight color or only black while maintaining luminance of the original full color image.
Abstract: There is provided a sheet feeding apparatus including a first feeding member that feeds at least one of the sheets from a discharge tray; a second feeding member that feeds the sheet fed by the first feeding member; a separating member, wherein a nip portion is formed between the separating member and the second feeding member, and when two sheets are entered the nip portion, the separating member separates one of the entered sheets from the other; an adjusting unit that changes a force of the separating member; a detecting unit that detects at least one of a distance by which the other of the entered sheets is transported beyond the nip portion and an advancing speed of the other of the entered sheets at the nip portion; and a controller that controls the adjusting unit based on a detection value of the detecting unit.
Abstract: An apparatus for applying an electrical charge to a charge retentive surface, wherein a bias charge roll member is situated proximately to a surface to be charged such as, a photoreceptor having a cleaning system which includes a web material in contact with the bias charge roll to remove containments thereform.
Abstract: User behavior while interacting with one or more first representations of digital content can be monitored. Interaction information can be determined by monitoring the user behavior while interacting. Interaction information can include information identifying interaction areas of the first representation, degree of interaction information, and sequence of interaction information. The interaction information can be maintained and used to deform a second representation of digital content. The first and second representations can be of the same or different digital content.
Type:
Grant
Filed:
September 26, 2003
Date of Patent:
November 16, 2010
Assignee:
Fuji Xerox Co., Ltd.
Inventors:
Laurent Denoue, Patrick Chiu, Tohru Fuse, Jonathan Trevor, David M. Hilbert, Les Nelson, Elizabeth F. Churchill