Abstract: The order of pixel data is converted on a frame-by-frame basis to produce a prescribed combination of pixel data. To construct frames, sequence numbers representing the order of the frames are attached to respective frame data each composed of a plurality of pixel data thus produced. The frames thus constructed are transmitted to the transmission line. On the receiving side, the sequence numbers of the frames received from the transmission line are checked to detect a missing frame. Pixel data of the missing frame is replaced by those of a frame having a sequence number immediately before that of the missing frame. An image is reconstructed by inversely converting the order of the pixel data which include the replaced pixel data.

Abstract: 05567494An inexpensive roll for electrostatic charge having the simple layer structure not affected by working environmental conditions, not developing exuding phenomena such as bleeding and blooming, generating no leaks and being able to conduct a uniform, stable electrostatic charge, which comprises a core member, and a conductive elastomer layer and a surface layer laminated thereon in this order, the surface layer having a conductive material dispersed therein, wherein the surface layer has a higher electrical resistance in an outermost surface region thereof and formed of a thermosetting binder resin containing carbon black dispersed therein by electrostatic deposition.

Abstract: A process for the preparation of hydroxygallium phthalocyanines Type A, Type B, Type C, or Type D, which comprises contacting Type V hydroxygallium phthalocyanine with an alcohol.

Abstract: Intermediate transfer assemblies, and printing machines and methods which use such assemblies, which inductively dry liquid images on an intermediate transfer member. The assemblies include an intermediate transfer member that receives a liquid image which is comprised of a liquid carrier and toner particles. An induction coil assembly comprised of a ferromagnetic core wrapped with a plurality of turns of a conductive element and which is spaced apart from the intermediate transfer member creates alternating magnetic flux lines which create eddy currents in a conductive heating element, causing that element to heat. If the conductive heating element is part of the induction coil assembly heat is radiated onto the liquid image. If the conductive heating element is part of the intermediate transfer member the heat is conducted to the liquid image. In either case the heat dries the liquid image by causing the liquid carrier to evaporate.

Abstract: An apparatus which transfers a developed image from a photoconductive surface to a copy sheet. The apparatus includes a corona generating device arranged to charge the copy sheet for establishing a transfer field that is effective to attract the developed image from the photoconductive surface to the copy sheet and a blade which is moved from a non-operative position spaced from the copy sheet, to an operative position, in contact with the copy sheet for pressing the copy sheet into contact with at least the developed image on the photoconductive surface to substantially eliminate any spaces between the copy sheet and the developed image during transfer of the developed image from the photoconductive surface to the copy sheet. The blade is fabricated to include a conductive material for preventing the generation of electrostatic charge on the blade which may create copy quality defects as a lead edge of the copy sheet passes between the blade and the photoconductive surface.

Abstract: A method and apparatus for minimizing image smear. A plurality of sheets are printed, each having the same test pattern thereon but varying a sheet transport speed as each sheet is printed. The sheets are then scanned by the machine and a velocity profile for each sheet is created. The velocity profile is then used to determine a standard deviation and a mean velocity which are then calculated and stored or can be plotted for each sheet. The point at which the relationship between the standard deviation and the mean results in the lowest value is the optimum speed for the subsystem being calibrated. The test is then performed on a second subsystem and repeated several times so that the optimum speeds for the pre and post transfer drives are quickly and easily determined.

Abstract: Resistance layer structures comprised of a plurality of conductive charge storage nodes, collection electrodes, and an electrically controllable resistance element which connects the storage nodes and the collection electrodes. The resistance of the electrically controllable resistance element can be switched between a low impedance, so as to permit a rapid charge interchange between the various storage nodes and the collection electrodes, and a high impedance, so as to permit an integration of charge onto the storage nodes. Beneficially, the electrically controllable resistance element is implemented as the active region of a metal-insulator-semiconductor device.

Abstract: Low optical density magnetic fluid which is a stable dispersion of fine magnetic particles. A method of forming the stable dispersion which includes providing an ion exchange resin, loading the ion exchange resin with an ion capable of forming a magnetic phase, treating the loaded resin to form magnetic particles and micronizing the resin and magnetic particles in a fluid to form an aqueous stable colloid. The invention provides submicron particles and submicron particles which are dispersed in an aqueous colloid. A method of forming the stable dispersion which includes providing an ion exchange resin, loading the ion exchange resin with an ion, treating the loaded resin to form nanoscale particles. Fluidizing the resin and particles to form an aqueous stable colloid. A method of forming magnetic materials having tunable magnetic properties and the magnetic materials formed thereby.

Abstract: A sensor array includes includes multiple sensor elements that each have a collection electrode in contact with a photosensitive layer. The photosensitive layer is configured to produce a detectable response at the collection electrode upon incidence of radiation in a responsive zone of the photosensitive layer. A gate electrode layer is separated from the photosensitive layer by a dielectric layer, with adjustments to voltage applied to the gate electrode layer inducing changes in areal extent of the responsive zone of the photosensitive layer. Changing the size of the responsive zone permits performance of image convolutions for edge detection, data compression, or other Gaussian convolutions by the sensor array, rather than by post-detection electronics.

Abstract: In an optical system, a lens array comprises a plurality of gradient index lenses arranged in a plurality of rows. The lens array is aligned with an image bar having a plurality of pixel rows in such a manner that each pixel row in the image bar is symmetrically arranged with respect to lens rows having fields of view encompassing the pixel row.

Abstract: A process for the preparation of polymer latex particles comprising:(a) conducting a pre-reaction emulsification which comprises emulsification of the polymerization reagents of monomer, polar comonomer, water, surfactant, chain transfer agent, and initiator, and wherein said emulsification is accomplished at a low temperature of from about 3.degree. to about 35.degree. C.; and(b) accomplishing an emulsion polymerization, which comprises heating the emulsified mixture of (a) in a reactor at from about 25.degree. to about about 125.degree. C. and retaining the contents of the reactor for an effective time period at said temperature of from about 25.degree. to about about 12.degree. C., followed by cooling.

Abstract: In a dual engine printing system producing a multipage print job from first and second serially connected printing engines at a common output from the second engine, where the second printing engine has a duplex return path bypassing its printing path and extending substantially therethrough, a high productivity simplex job printing mode is provided in which alternate pages are substantially simultaneously printed in both the first and second printing engines, but the alternate pages printed in the first printing engine are fed to the second printing engine duplex return path to bypass the printing path of the second printing engine and then are automatically interleaved in the common output with the alternate pages printed in the second printing engine. The duplex return path is preferably a bidirectional loop extending above the printing path and driven in a reverse sheet feeding direction for this simplex printing.

Abstract: A technique of adjusting the operation of a fuser in accordance with the size and orientation of copy sheets being fused. A controller includes a table in memory for storing fuser operation data related to given copy sheet size and orientation and tracks the operation of the fuser by determining the size and orientation of copy sheets being delivered to the fuser, scanning the table in memory to locate size and orientation identifiers and fuser operation data, and adjusts the operation of the fuser in accordance with the operation data by counting the number of copies being fused and placing the machine in idle for a given period of time upon reaching a predetermined copy count.

Abstract: A color ink jet printing device capable of substantially reduced intercolor bleeding includes an ink jet printer having at least one printhead and at least three separate ink supplies in communication with the printhead. A first ink supply contains a slow drying black ink. A second ink supply contains a fast drying black ink. A third ink supply contains a fast drying non-black color ink. Prior to printing, black image potions are determined. The black portions are printed using a pixel priming process, a border substitution process or a combination thereof to reduce intercolor bleed. The pixel priming process first prints a quartertone or halftone pattern using fast drying black ink, followed by subsequent whole tone printing superposed on the primed black image area using a slow drying black ink. The border substitution process analyzes a neighboring matrix of pixels surrounding each black pixel, preferably at least a 5.times.5 matrix, to determine if color pixels other than black are present.

Abstract: An intermediate transfer member achieves substantially 100% toner transfer by containing a fluorocarbon elastomer containing less than 60 mole % vulnerable sites in the fluorocarbon chain. A high resolution image can be produced in an image developing system containing such a fluorocarbon elastomer. The fluorocarbon elastomer reduces the charge exchange between toner particles and the intermediate transfer member, and also reduces charge exchange between charge directors in liquid developers and the intermediate transfer member.

Abstract: An image forming device, such as a color copying machine or a color printer, which processes an input image signal, thereby obtains an output image signal, and forms an output image on the basis of the output image signal. In the image forming device, an information input unit writes some information identifying the copying machine to an area in an information storing unit at the time when a power source is turned on for the copying machine for the first time after the assembly thereof. When the power source is turned on for a second and any subsequent times for the copying machine, the copying machine copies an original sheet in such a state of the machine that the information stored in the area of the information storing unit is added to the output image in the form of a pursuit image which it is hard or impossible to recognize with the human eyes.

Abstract: A buffer layer having crystal orientation in a (111) face is formed on a semiconductor single-crystal (100) substrate and a ferroelectric thin film having crystal orientation in a (111) or (0001) face is then formed over the buffer layer. The buffer layer is preferably formed of MgO at a temperature ranging from 20 to 600.degree. C. and at a rate ranging from 0.5 to 50 .ANG./sec. The thus formed ferroelectric thin film has its axes of polarization aligned in one direction. Using the oriented ferroelectric thin-film device, highly functional nonvolatile memories, capacitors or optical modulators can be fabricated on semiconductor substrates.

Abstract: A fluorescent method comprising changing charge amount in an organic dye thin film by a voltage applied between a pair of electrodes, and increasing and decreasing efficiency of fluorescence generated by exciting the organic dye thin film with a light source depending on the change of the charge amount is disclosed. A fluorescent device comprising an organic dye thin film, a pair of electrodes disposed to apply pressure to the organic dye thin film and a light source generating fluorescence by exciting the organic dye thin film, wherein efficiency of the fluorescence is increased and decreased depending on the change of the charge amount in the organic dye thin film by voltage applied between the electrodes is also disclosed. A fluorescent recording method comprising accumulating charges in an organic dye thin film by a voltage applied between a pair of electrodes, changing efficiency of fluorescence of the organic dye thin film depending on the accumulation of charges and recording is also disclosed.

Abstract: A process for the preparation of conductive carrier particles which comprises mixing carrier core with a first polymer pair and a second polymer pair, heating the mixture, and cooling the mixture; and wherein the first and second polymer pair each contain an insulating polymer and a conductive polymer and wherein the carrier conductivity thereof is from about 10.sup.-6 to about 10.sup.-14 (ohm-cm).sup.-1.

Abstract: A corona generator including a support structure and an electrode mounted on the support structure is provided. The corona generator also includes an ozone neutralizing element removably mounted on the support structure proximate to the electrode. The ozone neutralizing element has various substrates and types for removably mounting the element.