Abstract: There is disclosed an apparatus for machining curved facets onto several polygons together. The apparatus of this invention comprises a fixture which has a mill bed and a ram. The mill bed holds an movable plate and the movable plate holds a rotating plate. The rotating plate which will be fixed during the operation of the apparatus will hold a stack of blank polygons. The ram holds two motors which are connected to a cutter. The motors cause the cutter to rotate and gradually move down the cutter. The rotation axis of the cutter is parallel to the rotation axis of the polygons. Once the motors are turned on the cutter will sequentially cut one curved facet onto each polygon. After one facet is cut onto each polygon, the motors will be stopped and the rotating plate will be rotated to position the polygons to receive the carve for the next curved facet.

Abstract: A full color display is disclosed having a high efficiency light source optically coupled by a light coupling lens array to the active matrix of pixel elements of an image forming means such as a transmissive liquid crystal light valve. The light source is comprised of a patterned matrix of individual, primary colored visible radiation emitters, such as individual phosphor elements, arranged in a manner suitable for the human eye to integrate the individual primary colored lights into a single mixture color. The light coupling lens array collects substantially all of the light rays emitted from each primary colored light emitter and focuses them on a respective one of the transparent electrodes in the active matrix, as a real image smaller than the size of the electrode. A suitable light coupling lens array is a gradient index lens array, a multiple layer, two dimensional array of microlenses functionally analogous to an array of strip lenses, or a microlens array.

Abstract: Four cooling fans 1 to 4 are provided under a pressure roller along its axial direction in a symmetric manner. The outside cooling fans 1 and 4 are disposed so as to face the non-paper-passing portions of the pressure roller when an A1 size transfer sheet is running with-its longer sides being parallel with the transport direction. The middle cooling fans 2 and 3 are disposed so as to face the non-paper-passing portions of the pressure roller when an A2 size transfer sheet is running with its longer sides being parallel with the transport direction. If the ambient temperature is high, all the cooling fans 1 to 4. are driven. If the ambient temperature is low, only the cooling fans 1 and 4 are driven when an A1-size sheet comes.

Abstract: A printing machine having a sheet path for moving sheets, a buffer tray assembly for receiving and holding sheets of various sizes and orientation without skewing such sheets. The buffer tray assembly includes a sheet feeding unit, mounted adjacent to and upstream of a sheet holding unit thereof, relative to sheet movement, for feeding, seriatim and without skewing, sheets of various sizes and orientations from the path into the sheet holding unit. The sheet feeding unit includes a sheet driving roller. The sheet driving roller has a plurality of operative positions that are spaced laterally along the sheet cross-path dimension of the sheet path, and that correspond respectively to the midpoints of cross-path dimensions of the various size sheets being fed into the sheet holding unit for feeding and stacking sheets without sheet skew.

Abstract: An electrostatographic imaging structure is provided having at least one distinct outer layer including a rotary drum having an outer peripheral surface, a retainer either separate from or a part of the drum or a hold down mechanism, and a photosensitive member held down to the peripheral surface of the drum by the retainer or hold down mechanism.

Abstract: A thesaurus receives a word and uses a word list to obtain a corresponding number. The corresponding number is then compared with numbers grouped in sequence to represent synonym groups. For each match, information about the group including the matching number is determined based on the sequential position of the matching number. This information may include the group's part of speech, its length, and the positions of its members. The numbers in the group are retrieved and the corresponding synonymous words are obtained, again using the word list. Tables contain data used to determine the information about a group containing a matching number. The groups are sorted by part of speech and one table contains information about the ending position of each part of speech so that a group's part of speech can be determined from the position of any number in it.

Abstract: A protocol for communication through a bus controller to control data transfers between a host processing platform and the data bus of a bit map printer. This protocol is optimized for a data bus which connects a number of ASIC accelerator cards in addition to the printer, disk controller, bus controller and other typical system cards. The basic data transfer cycle transfers eight data words on the bus between ASIC's, I/O devices, printer and any other devices.

Abstract: A process for the preparation of an electrophotographic photoreceptor having a high sensitivity and stability and an excellent product quality stability without being affected by the production environment is disclosed, which comprises coating on a substrate a functional layer-forming coating solution containing a compound which undergoes polycondensation upon hydrolysis, adjusting a temperature of said substrate having the coated layer such that relationship (1) is satisfied, and then moistening said coated layer at a temperature of 30.degree. C. to 180.degree. C. in an atmosphere of a dew point of 25.degree. C. to 80.degree. C.:DP.ltoreq.ST.ltoreq.DP+40.degree. C. (1)wherein DP represents the dew point upon said moistening and ST represents the temperature of the substrate just before said moistening.

Abstract: An input scanner for converting original hard-copy images into digital signals is adapted for efficient scanning of simple "business color" documents. Three linear arrays of photosensors, each linear array corresponding to one primary color, are moved relative to the original image. One linear array of photosensors operates on a full cycle and converts every single scan line of the original image into digital signals. Simultaneously, the other primary-color-sensitive linear arrays operate on half cycles and record only signals corresponding to an evenly-distributed subset of small areas of the original image.

Abstract: In a sheet output system with a stacking tray for a reproduction apparatus, in which sheets sequentially moving in an output path are fed out from a sheet ejection nip for stacking in the stacking tray, a sheet separating assistance unit is mounted adjacent the ejection nip with three evenly circumferentially spaced radially extending sheet separating arms, with one separating arm automatically normally extending into the output path for engagement and partial rotation and translation solely by a moving sheet lead edge in the output path, while maintaining at least one separating arm in contact with the moving sheet as the moving sheet is fed out from the sheet ejection nip to provide sheet separating assistance, even if the nip reverses for duplexing. The automatic realignment of the device to a lead edge catching position after each sheet is provided by gravity with an eccentric over-center mounting system with a large triangular shaped mounting aperture.

Abstract: The present invention is a method and apparatus for improving the depth of focus in a raster output scanner (ROS), and more particularly to a system for maximizing the line separation depth of focus of a multispot ROS while maintaining the system common depth of focus. In a preferred design for a ROS-based system, the system common depth of focus (system common DOF) is maximized, where the system common DOF is characterized as the depth-of-focus over which all performance parameters are met. More specifically, the performance parameters are intended to include the following five factors: (1) scan and cross-scan spot size; (2) wobble; (3) differential bow; (4) line separation; and (5) scan linearity. Maximizing the system common DOF means to maximize the depth-of-focus while at all times meeting or exceeding the performance requirements for the five listed parameters. The optical system design achieves a desirable system common DOF while maintaining a line separation of 127 .mu.m (1/200 inch).

Abstract: An endless flexible seamed belt formed by joining two ends of the material from which the belt is fabricated is provided, the belt having at least one overlapping, butting, interlocking joint to form the endless belt, each end of the at least one overlapping butting, joint, contains a pair of interlocking members having a male projection and a female receptacle geometrically oriented so that the female receptacle on the first end receives the male projection on the second end and the male projection on the first end is received by the female receptacle on the second end to form a joint between the first and second ends, at least one receptacle being formed within and having a substantial depth in a portion of the belt material at the belt ends, at least one projection and receptacle pair being sized and shaped to form at least one pair of mutually mating elements in a combination overlapping, butting and interlocking joint to form the endless belt.

Abstract: Disclosed is a free radical polymerization process for the preparation of a thermoplastic resin or resins comprising heating a mixture of a free radical initiator, a stable free radical agent, and at least one polymerizable monomer compound to form a thermoplastic resin or resins with a high monomer to polymer conversion; cooling said mixture; optionally isolating the thermoplastic resin or resins; and optionally washing and drying thermoplastic resin or resins.Related free radical processes are also disclosed for the preparation of mixtures and block copolymer thermoplastic resins. Resins prepared by the disclosed processes possesses a narrow polydispersity and a modality that is controlled by the selection of a free radical initiator and stable free radical agent addition step or steps.

Abstract: A compactly stored word list that includes a directed graph data structure is used for word to number (W/N) and number to word (N/W) mapping. Each word accepted by the data structure is mapped to a unique corresponding number within a dense set of numbers ranging from zero to one less than the total number of acceptable words. Some common suffixes are collapsed into shared branches, which is possible because the numbers are not stored within the word list. In addition, some branches of the data structure can be skipped during mapping because of information associated with branch points. That information permits the mapping scan to continue with a next branch or with an alternative branch. That information also indicates the number of suffix endings in the next branch; this number is used to keep a count of the word endings during word to number mapping; it is also used both to determine whether to continue with the next branch and also to reduce the number being mapped during number to word mapping.

Abstract: Process for coating flexible belt seams including providing a flexible belt having an outwardly facing surface and a welded seam, forming a smooth liquid coating comprising a hardenable film forming polymer on the welded seam, the coating being substantially free of fugitive solvent, and hardening the coating to form a smooth solid coating on the seam.

Abstract: A desired image based on digital data is printed on a substrate. A subset of the digital data relating to a portion of the desired image is identified, wherein pixels associated with the digital data are of a predetermined spatial relationship with pixels intended to be of a different color as the pixels associated with the digital data. The subset of digital data is caused to activate a printhead adapted to emit ink of a first type. Data not of the subset of digital data is caused to activate a printhead adapted to emit ink of a second type, the ink of the first type being adapted to dry at a faster rate than the ink of the second type.

Abstract: A method and apparatus for minimizing operator manual adjustments for toner concentration drifts in a printing machine. The method includes storing into a controller, a value for a toner concentration factor, and of estimating a quantity of toner to be depleted by each toner reproduction of a document sheet. The method also includes maintaining the toner concentration ratio by adding to a development housing a quantity of fresh toner, and of keeping a running count of toner reproductions of document sheets made. The method further includes manually adjusting the quantity of fresh toner added based on inspecting toner reproductions made, keeping a count of the number of such manual adjustments, and automatically correcting the stored value for the toner concentration factor, when the number of manual adjustments, relative to a predetermined running count of toner reproductions, reaches a predetermined number.

Abstract: Light-controlling layer which contains at least a liquid crystal as a component is combined with photoconductive layer that is provided on the side of the layer closer to exposing unit and the impedance of which varies in accordance with the intensity of input light. Exposing unit exposes the photoconductive layer to write image into the light-controlling layer. Gradation control unit modulates the output light of the exposing unit on the basis of a signal indicative of the multi-level density of the image to be written, thereby controlling the light transmittance of the light-controlling layer.

Abstract: There is provided, within a printing system, a system for binding a set of individually folded N-up prints. The binding system includes a folding device for folding each of the N-up prints, one at a time, such that each individually folded N-up print includes a folded edge. The binding system further includes a stacker for receiving the set of individually folded N-up prints when delivered thereto and a binding device for applying an adhesive layer to the stacked set of individually folded N-up prints. The adhesive layer contacts each of the folded edges of the individually folded N-up prints so as to provide a secure binding relationship between each of the individually folded N-up prints. During the printing and binding mode, if a different type of substrate is detected in the substrate tray other than the type selected, operation of the binding system is inhibited.