Abstract: Disclosed herein are easy-to-realize multivalued image coding and decoding devices, each of which is capable of reducing memories in number while the accuracy of calculations necessary upon coding and decoding is being held and relaxing a probability estimate. An image disassembler disassembles a bit string indicative of pixels into a plurality of parts in response to image data inputted from an image input unit. Further, the image disassembler sends the value of each disassembled pixel to be coded and the value of each disassembled pixel for reference to an image analyzer as disassembled image data. The image analyzer sends the value of each disassembled pixel to be coded to a coding unit as disassembled pixel-value data and transmits the value of the reference pixel to a probability estimate unit as status data. The probability estimate unit sends probability estimate data corresponding to the status data to the coding unit.

Abstract: An integrating xerographic light emitter array includes circuitry for operating an active matrix array of organic light emitting diodes (OLEDs). The light emitter array stages rows of emitters in the slow scan direction and moves the object image and synchronization with the photoreceptor. Grey scale resolution, increased emitter lifetime and the ability to operate at lower light levels are achieved in proportion to the number of stages. The entire printbar can be rewritten during each line time of the photoreceptor, which allows the exposure on any pixel on the photoreceptor to be varied in a number of grey levels from zero to the number of stages. Bringing a grey level signal to the photoreceptor allows improved continuous tone image quality and line placement. Additional grey resolution is obtained by analog driving of individual pixels. This technique is applicable to a variety of emitters or light valves, but is particularly suited to inexpensive OLEDs.

Abstract: A vector error diffusion system for quantizing pixel value in color images, which initially determines whether any pixel should be white or colored, and subsequently determines whether the pixel should be a primary color, a secondary color or black.

Abstract: A priming station for an ink jet printer includes an ink accumulator tank which has an enhanced moisture vapor transfer rate based on a choice of materials and tank design. In a preferred embodiment, the ink accumulator tank is connected between a printhead nozzle face capping member and a vacuum pump. The tank comprises a tub bonded to a cover having holes formed therethrough. A thin, highly permeable film which provides a relatively high moisture vapor transfer rate is adhesively bonded to the cover overlying the holes. In a preferred embodiment, the film is a thin (0.635 to 0.78 mm thick) silicone or Mylar. This design reduces the accumulator tank replacement frequency by increasing the evaporation rate of the ink stored in the tank.

Abstract: An imaging member including: (a) a substrate layer; (b) an imaging layer; and (c) an abrasion resistant layer selected from the group consisting of an overcoating layer and an anti-curl layer, wherein the abrasion resistant layer includes a branched polycarbonate.

Abstract: The present invention is a method and apparatus for providing a general-purpose, multifunction, individually addressable, full-bandwidth bi-directional communication device with built-in Authentication, Authorization, and Accounting (AAA) capabilities that connects a home or business user with ATM and other switched broadband digital networks in a convenient, adaptable, extensible manner at reasonable cost. The device supports a Document Services Architecture (DSA) and, in particular, supports agent-based communications (including interaction with an Agent Instance Service) to ensure well-behaved communications and fair allocation of network resources among users. The device can be used in a heterogeneous environment and with different types of networks and protocols. The full-bandwidth bi-directional communication and built-in AAA capabilities of the device distinguish it from other "set-top boxes.

Abstract: A replacement drive roll having an integral bearing for easy replacement and universal usage in a printing machine. The roll member has a bearing having a nonround outer race for retention in a frame member and a nonround inner race for engagement with a driveshaft on one end. The opposite end has a locking member for preventing axial movement along the shaft. The roll assembly has elastomer bands stretched around the outer circumference to form the drive surface of the roll. The roll unit is easily replaced and can be used in numerous locations thereby reducing parts inventory requirements.

Abstract: In an ink tank, there are provided a main ink chamber containing a capillary vessel member, and an intermediate ink chamber. When the ink is consumed, the ink held by capillary force of a capillary vessel member is supplied via a communication port from a joint port. The same amount of air as the amount of the consumed ink is conducted from the atmospheric communication port into the main ink chamber. The conducted air is supplied via a groove formed in a lid to an upper surface of the capillary vessel member. As a result, the air is entered into the capillary vessel member under better condition. In a plane portion of the lid, the ink is in contact with only the capillary vessel member, and the ink remaining this portion is reduced. Thus, the ink using efficiency is increased.

Abstract: To obtain the sufficiently precise result of floating-point accumulation even if the quantity of computation is enormous, a floating-point accumulator according to the present invention is constituted as follows:When two floating-point data are stored in any of shift registers, the two data are respectively output to BUS0 and BUS1 via one connected to the shift register of buffers. The two output data are input to an adder via BUS0 and BUS1 and output as added result data after adding the floating-point numbers. The above added result data is returned to each input of the shift registers via BUSW and a multiplexer and written into the shift register corresponding to the addition of the higher level by one of the shift register holding floating-point data before addition. The floating-point numbers are accumulated by repeating the above operation.

Abstract: Detection of video shot boundaries using a Video Segmenting Hidden Markov Model to model the sequence of states of a video. The Video Segmenting Hidden Markov Model determines the state sequence based on feature values. Using Hidden Markov Model techniques allows for automatic learning and use of multiple features including motion vectors, audio differences and histogram differences, without the need for manual adjustments of these thresholds.

Abstract: An image forming apparatus providing frame support for an optical scanning unit and related image forming elements is formed of resin containing less than 10% glass fibers and includes reinforcement formations having a continuous hollow interior to increase rigidity while reducing weight. The apparatus is substantially box-like with ribbed surface for mounting a laser beam scanning unit and upright walls for mounting a drive unit are formed with ribs extending from thick wall portions.

Abstract: A process for the preparation of toner generated by mixing (1) a colorant dispersion preferably containing a nonionic surfactant, and (2) a latex emulsion, and wherein the latex emulsion preferably contains resin, or polymer and a surfactant, and wherein the colorant nonionic surfactant is of the Formulas (I) or (II), or optionally mixtures thereof ##STR1## wherein R.sup.1 is a hydrophobic aliphatic, or hydrophobic aromatic group; R.sup.2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, and alkylarylalkyl; R.sup.3 is hydrogen or alkyl; A is a hydrophilic polymer chain, and m represents the number of A segments.

Abstract: A process for treating a seamed flexible electrostatographic imaging belt including providing an imaging belt including at least one layer including a thermoplastic polymer matrix and a seam extending from one edge of the belt to the other, providing an elongated support member having a arcuate supporting surface and mass, the arcuate surface having at least a substantially semicircular cross section having a radius of curvature of between about 9.

Abstract: An image forming apparatus which comprises image inputter for inputting an image, information inputter for inputting information to be added to the image, image producer for producing an output pixel corresponding to the image inputted by the image inputter using a line screen whose line width is changed depending on desired density of the output pixel, position changer for changing a position of the output pixel to be produced in accordance with the information inputted by the information inputter in a line width direction of the line screen within the width of the screen in a process of producing the output pixel corresponding to the inputted image by the image producer, and controller for controlling the image producer to produce the output pixel in the position changed by the position changer using the line screen.

Abstract: A charging device includes a housing defining a chamber, the chamber having a floor, the floor having disposed therein an elongated slot pressure port and a plurality of circular hole vacuum ports. Four air flow conduits are disposed under the chamber floor to provide separate pressure air flows and vacuum air flows through the chamber. These four air flow conduits comprise two pressure conduits and two vacuum conduits. The two pressure conduits and two vacuum conduits are respectively connected at one of their ends by two turn-around connectors. Separate pressure air supply connections and vacuum air supply connections are applied to the respective other ends of the two pressure conduits and two vacuum conduits. As a result, pressure air is applied at both ends of the pressure conduit adjacent to the floor, thus causing pressure air flow through the pressure port and into the chamber.

Abstract: A method for calibrating a multi-chip image sensor, and an imaging system having a multi-chip sensor that includes color correction factors generated by such a method. The image sensor is successively controlled to image three different test targets. After imaging each target, a set of correction factors is generated and used to correct image signals generated when imaging the next test target. A first set of correction factors corrects for pixel-to-pixel variations between imaging elements in the array. The second set of correction factors corrects for chip-to-chip variations between chips in the array. The third set of correction factors corrects for array-wide variations compared to a standard color chart.

Abstract: A photoreceptor fabrication method including: (a) depositing a charge generating layer; (b) depositing a first charge transport layer having a first charge carrier mobility value; and (c) depositing a second charge transport layer having a second charge carrier mobility value that is different from the first charge carrier mobility value; wherein steps (a), (b), and (c) occur in any order, wherein the difference in the first charge carrier mobility value and the second charge carrier mobility value is accomplished by:(i) wherein the first charge transport layer includes a first binder and a first charge transport material and the second charge transport layer includes a second binder and a second charge transport material, selecting the first binder to have a lesser solubility limit for the first charge transport material than the solubility limit of the second binder for the second charge transport material; or(ii) wherein the first transport layer includes a first polymeric compound composed of a first char

Abstract: An apparatus for developing a latent image recorded on an imaging surface, comprising, a housing defining a chamber storing a supply of developer material; a donor member, spaced from the imaging surface, for transporting developer material on the surface thereof to a region opposed from the imaging surface, said donor member includes an electrode array on the outer surface thereof, said array including a plurality of spaced apart electrodes extending substantial across width of the surface of the donor member; means for loading developer material onto said donor member, a multi-phase voltage source operatively coupled to said electrode array, the phase being shifted with respect to each other such as to create an electrodynamic wave pattern having at a phase velocity for moving developer material to and from a development zone; and an AC voltage source operatively coupled to said electrode array, for applying an AC voltage in said development zone between the donor member and said imaging surface.

Abstract: There is provided a system for a multifunctional printing system which controls a manner in which status message sets are displayed on a display screen of a corresponding user interface. As contemplated, a first service attribute designating set of information is displayed on the display screen at a first time and a second service attribute designating set of information is displayed on the display screen at a second time, with the second time being subsequent to the first time. In practice, a message manager determines whether a replacement operation has occurred with respect to the user interface such that a substantial portion of the first service attribute designating information set has been replaced visually by the second attribute designating information set. In response to determining that a replacement operation has occurred, at least a portion of a status message set currently being displayed is replaced with at least a portion of another status message set.

Abstract: An improved replaceable liquid application system for applying a liquid intermediate transfer surface to a support surface in a printer is provided. The liquid application system is contained in a removable cassette and utilizes a liquid impregnated arcuate surface that engages the support surface by rolling contact. The liquid impregnated arcuate surface and a reclamation assembly are contained in a removable cartridge in the cassette. A cartridge life status assembly determines when the useful life of the cartridge has been exhausted. Push tabs on the cartridge and finger wells on the cassette allow for easy and convenient removal of a used cartridge and insertion of a replacement cartridge.