Abstract: A document scanner, including a document input tray for holding a compilation of documents in a predetermined sequence; a document output tray for receiving documents; an imaging station for scanning each one of said compilation of documents at predefined scanning rate; an imaging transport system for moving the documents received from said document input tray through said imaging station at a first velocity; an inverter, spaced a predetermined distance from said imaging transport system for moving selected documents of said compilation of documents back to said imaging transport system, said inverter having one mode of operation for moving selected documents to said imaging transport system so that a second side of said selected documents is scanned by said imaging station, said inverter having second mode of operation for moving selected documents to said imaging transport system so that said first side of said selected documents are rescanned by said imaging station.

Abstract: An optical scanning apparatus for simultaneously scanning a plurality of light beams. In the apparatus, four light beams emitted from two light emitting portions are allowed to sequentially pass through collimator lenses and cylindrical lenses. Then, a beam splitter synthesizes the light beams so as to be emitted to a mirror surface of a polygonal mirror. Then, the light beams are deflected when the polygonal mirror is rotated so as to be allowed to pass through an imaging lens. Then, the light beams scan and expose (main-scan) the surface of a photosensitive member. When the photosensitive member is rotated by a predetermined quantity, sub-scanning is performed. When the above-mentioned main and sub-scanning are repeated, a latent image for one page is formed on the photosensitive member. When the above-mentioned sequential processes are performed, interlaced scanning is performed under predetermined conditions.

Abstract: Electrostatic printing machines require different types of paper with different width and thickness. In relation to the paper thickness and width is a phenomenon called the End Leakage Current Effect whereby highly positive voltage can be found in the non-paper contact area of a photoreceptor surface after the transfer stage. The paper transfer stage is when the paper touches the photoreceptor and an image is transferred onto the paper. This effect can result in cleaning failure and potential non-uniformity on the photoreceptor surface. The extent of the end leakage current effect depends on the thickness and width of the paper to which the image is being transferred. Adjusting the pre-clean corotron current based on paper thickness and width provides a remedy for the end leakage effect. Sufficient corona treatment can be provided to the residual toner to enable proper cleaning of the photoreceptor when the pre-clean corotron current is adjusted accordingly.

Abstract: In a full-color image scanner having three parallel linear arrays of photosensors, each linear array of photosensors is sensitive to one primary color. With each readout cycle relating to a row of small areas on an original image moving past the scanner, the middle array of the three arrays of photosensors reads out its video data before the other two. This technique allows the arrays of photosensors to be spaced relatively close to each other, and in turn the close spacing of photosensors requires relatively fewer scan lines of video data to be temporarily buffered in the readout process.

Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.

Abstract: A reactive melt mixing process for the preparation of a low fix temperature toner resin, comprising:(a) mixing a reactive base resin, an initiator, and a polyester with amine functionality, and(b) crosslinking the resulting polymer melt under high shear to form a crosslinked toner resin.

Abstract: An image-processing system (20) for mapping full-color images to highlight-color images includes an image-input terminal (30). The image-input terminal (30) reads an image represented in a full-color scheme defined by a three-dimensional color space. An image-processing unit (40) samples the image to obtain a sample color. The image-processing unit (40) maps the sample color from the full-color scheme to a highlight-color scheme. The highlight-color scheme is defined by a two-dimensional color space that includes a highlight-color component and a base-color component. The image-processing unit (40) includes at least a first two-dimensional look-up table (42), which is used in mapping the sample color from the full-color scheme to the highlight-color scheme. Finally, an image-output terminal renders the image in the highlight-color scheme.

Abstract: A heat and pressure fusing assembly including an ink contamination-free release agent management (RAM) system is provided for supplying and applying release agent material onto an outer surface of a heated fuser roller suitable for fusing toner filled-in areas of a preprinted form. The ink contamination-free RAM system includes a housing defining a sump containing release agent material, a donor roller mounted partially within the sump for contacting, and applying release agent material onto, a surface of a heated fuser roller, and a metering roller mounted within the sump for moving and transferring a layer of release agent material from the sump onto the donor roller. The metering roller has a low energy surface layer made of PerFluoroAlkoxy (PFA) for preventing ink contaminants reaching the donor roller from transferring onto the metering roller, thereby preventing poor application of release agent onto the metering roller, and image defects resulting from such poor application.

Abstract: A signal processor amplifies picture signals provided by an image sensor, samples the amplified picture signals and holds the samples of the amplified picture signals. The signal processor comprises a dual correlation sampling circuit, and a sample-and-hold circuit connected to the output part of the dual correlation sampling circuit. The dual correlation sampling circuit comprises an amplifying stage to which an input signal is given, a low-pass filter connected to the output part of the amplifying stage, a time constant changing switch to be closed to set the low-pass filter for a smaller time constant, and a switch driving means for closing the time constant changing switch after the completion of giving an input signal to the amplifying stage.

Abstract: A surfactant free process for the preparation of toner comprising heating a mixture of an emulsion latex, a colorant, and a polyelectrolyte.

Abstract: A method for achieving multiple exposure levels for IOI (IMAGE-ON-IMAGE) xerography when imaging a second color through a first toner layer previously developed on the photoreceptive member. In the example illustrated the data from the previous image paths (magenta and yellow) is analyzed. If the signal indicates that a magenta or yellow bit is present, the cyan output bit information passes to the ROS unchanged, or at full intensity. If however, the magenta and yellow are not present, a modified pattern providing an appropriate reduced exposure signal is sent to the ROS. The process of laser attenuation is blended with halftoning logic to avoid image degradation due to the attenuation.

Abstract: An apparatus for developing a latent image recorded on an imaging surface, including a housing defining a chamber storing a supply of developer material including toner; a donor member, spaced from the imaging surface, for transporting toner 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; 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 for moving toner particles to and from a development zone; and a charging device for charging toner on the surface of said donor member.

Abstract: A phase change ink carrier composition comprising at least one anhydride/alcohol inclusive reaction product.

Abstract: An image processing system 1 (information processing system) includes a plurality of input interfaces 11, 12, and 13 for inputting image data output from a plurality of host systems C, PC1, and PC2, an input buffer 41 for storing the image data input through the input interfaces, determination mechanism for determining the upper limit value of the storage amount of the image data stored in the input buffer 41 for at least one of the input interfaces 11-13, and mechanism for storing image data in the input buffer in a scattering manner so as not to exceed the upper limit value determined by the determination mechanism.

Abstract: The efficiency of a thermal ink jet printhead is improved by providing a thermally grown field oxide layer and a deposited oxide layer, the two combined layers providing thermal insulation between a resistor layer and a silicon substrate. In a preferred embodiment, zirconium diboride is sputtered in the presence of oxygen to form a thin field oxide layer on a field oxide layer grown on the surface of the silicon substrate. At a predetermined time, during the sputtering process, oxygen is removed and the sputtering continues to form a conductive ZrB.sub.2 layer. The combined thickness of the two oxide layers provides the required thermal isolation between silicon substrate and heater resistor while the thermally grown field oxide layer enables the closer packing of resistor transistor drive circuits.

Abstract: A method of making rotating element sheet material utilizing magnetic latching is provided. The first step is providing a sheet of sheet material comprising a substrate with a surface and rotatable elements disposed therein. The elements each have an optical and electrical anisotropy, and comprise at least two portions. One of the portions is magnetizable. After the magnetizable portions have been oriented in a common direction, they are magnetized substantially uniformly. The elements can be oriented such that the magnetized portions are disposed towards the surface of the substrate. A layer of hardenable mixture containing a plurality of magnetic particles is then applied to the surface of the substrate. The hardenable liquid is kept liquid for a period of time to allow the migration magnetic particles to the area of the layer in the vicinity of the magnetized portions of the rotatable elements.

Abstract: In a multifunction digital printing apparatus, such as a copier-printer, image data from print jobs are intermingled with image data from copy jobs, such as originating from a digital scanner. Further, scanner-only functions such as electronic filing and sending facsimiles can be performed without need for printing hardware. An auditing device can decrement a user's account on a per-sheet basis regardless of whether a requested job requires the use of the scanner or printing hardware or both.

Abstract: An ink composition comprised of (1) a solid oxazoline compound with a melting point of from about 60.degree. C. to about 120.degree. C. and an acoustic-loss value of from about 25 to about 80 dB/mm; (2) a carbamate compound with a melting point of from about 25.degree. C. to about 100.degree. C.; (3) an alcohol compound; (4) a lightfastness component; (5) a lightfastness antioxidant; and (6) a colorant.

Abstract: It is an object of the invention to simultaneously process documents of a plurality of document types by simple management and simple inputs by the user. A document process designating means 3 determines a target document type as a target to be processed and a process to be executed. A finite-state automaton constructing means 4a composes a finite-state automaton from a content model defining lower elements included in each document type inputted. A document type collation control means 4c inputs a set of finite-state automatons having elements included in both the target document type and a document type to be compared to a finite-state automaton collating means 4b. The finite-state automaton collating means 4b determines whether the two finite-state automatons have a predetermined relationship.