Abstract: A motor drive control apparatus has a number of revolution setting circuit, a driving circuit for driving a motor to rotate at a predetermined number of revolution based on a number of revolution command signal output from the number of revolution setting circuit, a number of revolution detecting circuit for detecting the number of revolution of the motor, a driving voltage adjusting circuit for adjusting a level of the driving voltage of the motor to be supplied to the driving circuit, a motor control circuit including a PLL control circuit for controlling the number of revolution of the motor so that the phase difference between the phase of the number of revolution command signal and the phase of the number of revolution detection signal becomes within a predetermined range of value, and a voltage control circuit for instructing the driving voltage adjusting circuit to adjust the driving voltage of the motor to be at a level in the vicinity of the PLL controllable minimum level.

Abstract: Transfer control information for controlling a transfer amount per unit time of a transfer path is delivered from a transfer control section to an information transfer section. During encoding, the information transfer section receives image information from an external device in accordance with the transfer control information, and inputs the same to an image-information encoding/decoding section. A code-amount control section forwards code-amount control information for controlling the code amount to the image-information encoding/decoding section. The image-information encoding/decoding section encodes the image information in accordance with the code-amount control information outputted from the code-amount control section. The information transfer section transfers to an external device encoded information outputted from the image-information encoding/decoding section, while the transfer amount per unit time is being controlled by the transfer control section.

Abstract: An ink jet print head is disclosed which comprises: a head chip having a plurality of heating elements thereon, a flow passage forming member including a plurality of injection ports respectively corresponding to the heating elements for jetting out ink, a substrate for fixing the head chip, and a joint for supplying ink, wherein the substrate includes an opening so formed as to extend in the arrangement direction of the heating elements, the flow passage forming member is disposed so as to cover the opening from a position above the head chip, at least part of the joint is connected to the flow passage forming member, and ink supplied from the joint is supplied along the flow passage forming member to the heating elements disposed on the head chip.

Abstract: Interdigitated electrodes on a donor roll enable uncharged toner to be picked up from a fluidized bed reservoir. This layer of toner is subsequently charged by exposure to a corona device and delivered to a development zone, where it is used to develop an electrostatic latent image. Residual toner on the donor is neutralized by exposure to a second corona device and then stripped for return to the fluidized bed by applying an AC voltage between adjacent donor electrodes. So-called ion charging of the toner is known to cause the particles to have low adhesion, allowing development with DC fields alone. Optionally, an AC voltage can also be applied to adjacent donor electrodes in the development zone to enhance particle release. In addition to providing a means to impart adequate flow to the toner in this single component development system, the fluidized bed reservoir, in conjunction with ion charging, also provides a means for blending dry powder toners to achieve custom color development.

Abstract: A method for enhancing hydrogenation of an oxide-coated polycrystalline silicon thin-film transistor or devices includes depositing a metal capping layer on the device prior to hydrogenation. In addition, a method for batch hydrogenation of substrates or plates carrying the oxide-coated polycrystalline silicon devices includes placing the plates in a downstream flow from a hydrogen plasma.

Abstract: A detachable imaging module for an electrostatographic printing apparatus, including: (a) a housing; (b) a cylindrical, rotatable photoreceptor at least partially disposed within the housing, wherein the photoreceptor has a non-imaging area; and (c) a frictional drive apparatus in contact with the non-imaging area for facilitating rotation of the photoreceptor by frictional contact, wherein there is absent a rotational drive gear coupled to the photoreceptor.

Abstract: A method and apparatus for quasi-reprographically replicating a source document. The source document is digitized, appropriate locations for embedded code are detected, and any embedded code located in the digitized document along with the detected locations are forwarded to a decoder. The decoder forwards the decoded information to a control unit which processes this information and forwards it to a encoder whereafter it is inserted in the digitized document. The hardcopy replication of the source document being substantially visually identical to the source document, even though new or additional embedded machine-readable data has been added or existing data has been changed. The process occurs without intervention by an operator and without knowledge of the operator producing the replicated documents.

Abstract: A carrier comprising core particles with a coating thereover comprised of at least one polymer, a conductive colorant, and a stabilizer compound.

Abstract: A bichromal ball includes a first hemisphere. The first hemisphere includes a first pigment having a first color and a first polarity. The first pigment is added to a carrier fluid and polymer mixture during formation of the bichromal ball. A second hemisphere includes a second pigment having a second color and a second polarity. The second pigment is added to the carrier fluid and polymer mixture during formation of the bichromal ball. The carrier fluid and polymer mixture have a lower viscosity than the polymer alone. The carrier fluid is substantially removed after the first and second hemispheres are formed. The polymer is left along with the first and second pigments which form the bichromal ball. A diameter of the bichromal ball is reduced after the carrier fluid is substantially removed.

Abstract: A system for determining, in real time, the precise color measurements of a colorant being applied in a printing apparatus, the colorant being a combination of two or more primary colorants. Light from a light source is transmitted through or reflected from the colorant mixture, and received by a sensor having a relatively small number of photodetectors, each photodetector having a different translucent primary-color filter thereon. Various special algorithms can be used to approach the accuracy of a spectrophotometer using a relatively simple light sensor.

Abstract: The present invention is a method and apparatus for compensating for position error inherent in a raster output scanning printing system by adjusting the intensity of image exposure to effect a correction in the output image. The invention is particularly well suited to compensate for position errors arising from a plurality of sources by first summing the errors and then applying a single compensating adjustment to the intensity of individual scan rasters based upon the position error thereof.

Abstract: A twisting ball display sheet is disclosed which utilizes a mechanism other than Zeta potential to create dipole moment to rotate a plurality of bichromal balls. The twisting ball display sheet comprises a transparent sheet which contains a plurality of bichromal balls. Each bichromal ball comprises two hemisphere. Each hemisphere has a material which has a different work function than the work function of the other hemisphere. The two different work functions of each bichromal ball create a dipole moment which at the presence of a proper electric filed will cause the bichromal ball to rotate.

Abstract: A system for converting original RGB color signals to CMY signals includes the step of separating color signals from the original image into low-frequency and high-frequency components. The low-frequency components are converted to CMY signals via a look-up table reflective of a non-linear algorithm, while the high-frequency components are converted to CMY signals according to linear algorithms. The technique avoids color distortion caused by high-frequency noise, such as from halftone screens, in the original image.

Abstract: A method of cleaning a substrate, in particular, the front face of a thermal ink jet printing device, to improve subsequent thin film deposition in a single chamber plasma processing system containing fluorine-containing deposits, involves treating the substrate with a hydrogen plasma. A front face coating for a thermal ink jet device may be formed by a method involving (1) treating a substrate of the thermal ink jet device with a hydrogen plasma; (2) optionally coating the cleaned substrate with an amorphous carbon layer; and (3) coating the substrate or amorphous carbon layer with a fluoropolymer layer.

Abstract: A developer carrier comprising a cylindrical support having provided on the outer surface thereof a coating layer for retaining a developer, wherein the coating layer comprises electrically conductive fine particles and a binder resin comprising a phenolic resin having a weight-average molecular weight of from 3,000 to 5,000 as determined before being crosslinked. Also disclosed is a developing apparatus which comprises a developer carrier for retaining a developer on the surface thereof and for conveying the developer onto the position at which an electrostatic latent image formed on a latent image carrier is developed, wherein the developer carrier comprises a cylindrical support having provided on the outer surface thereof a coating layer for retaining a developer, wherein the coating layer comprises electrically conductive fine particles and a binder resin comprising a phenolic resin having a weight-average molecular weight of from 3,000 to 5,000 as determined before being crosslinked.

Abstract: A system and method for color mixing control in a developing material-based electrostatographic printing system. A developing reservoir containing an operative solution of customer selectable colored developing material is continuously replenished with selectively variable amounts of basic color components making up the operative solution by controlling the rate of replenishment of various color components added to the supply reservoir. An optical sensor is used to measure the optical spectrum of the developed image so that the actual optical spectrum thereof can be brought into agreement with a target optical spectrum associated with a customer selectable color. The present invention may be used to mix a customer selectable color in situ, whereby approximate amounts of primary color components are initially deposited and mixed in the developing material reservoir and the resultant developed image is monitored and adjusted until the mixture reaches a target optical spectrum.

Abstract: A transparency comprised of a supporting substrate, and thereover and thereunder two coatings, a first heat dissipating and fire resistant coating layer in contact with the substrate, and wherein said first coating is comprised of a binder with a melting point in the range of from about 100.degree. C. to about 275.degree. C. and a heat dissipating fire retardant component; and in contact with each of said first layers a second ink receiving coating layer thereover comprising a blend of a binder polymer, a cationic component capable of complexing with ink composition dyes, a lightfastness inducing agent, a filler, a biocide, and an ink spreading fluoro compound containing from 1 to about 25 fluorines and wherein said fluoro compound possesses a melting point of between about 50.degree. C. and about 100.degree. C.

Abstract: A coated ink jet paper with (1) a cellulosic substrate, (2) a first ink receiving coating on the front side of the substrate capable of absorbing an ink vehicle, and which receiving layer coating is comprised of (a) a hydrophilic binder polymer, (b) an ink wetting/ink spreading agent, (c) a dye mordant, (d) a lightfastness agent, (e) a filler, (f) a biocide; and (3) a second traction controlling coating in contact with the reverse side of the substrate, and which coating is comprised of a polymer with a glass transition temperature of from between about a negative -50.degree. C. to about 50.degree. C., a lightfastness agent, an antistatic agent, a pigment, and a biocide. The cellulosic substrate can be comprised of alkaline sized and acid sized blends of hardwood kraft and softwood kraft fibers, which blends contain from about 20 percent to 80 percent by weight of softwood and from about 80 to about 20 percent by weight of hardwood.

Abstract: A method of reducing visible image artifacts that utilizes variable phase parameters (i.e., the standard x, y start position in halftone cells) during halftoning processes to match the phases of halftone cells, and further utilizes a brick approach to halftoning. The position in a halftone dot structure is correlated to the phase of sine waves for subsequent dots to be used in a halftoning process. Utilizing a selected x, y start position in halftone cells to match phase parameters of said halftone cells according to said position of said halftone dot and said subsequent dots. Switching from one dot to another dot on the same new starting position in the second dot will improve the probability that the thresholds and the slopes of the halftone dots are matched at the boundary between the two different dots.

Abstract: A bistable valve useful for paper handling applications is disclosed. The valve can be batch fabricated in two dimensional valve arrays, with each valve in the array being controlled by passive matrix addressing. Typically, each valve includes a valve housing having an aperture plate defining an aperture therethrough, and an opposing plate positioned in spaced apart relationship to the aperture plate. A flexible film or strip is attached at its first end to the aperture plate and at its second end to the opposing plate. Valve action is provided by use of at least two switching electrodes for moving the flexible film between an aperture blocking position and an aperture open position, with at least one of the switching electrodes positioned adjacent to the aperture plate and at least one of the switching electrodes positioned adjacent to the opposing plate. To reduce unswitched movement when the switching electrode bias is reduced or not present, at least two electrostatic or mechanical catches are used.