Abstract: An electrophotographic image forming apparatus including first and second photosensitive bodies, first and second exposing units to form electrostatic latent images on the first and second photosensitive bodies respectively charged to a uniform electric potential, a first developing unit to develop an electrostatic latent image of the first photosensitive body by supplying a color toner to the electrostatic latent image of the first photosensitive body, and a second developing unit in which a transparent toner and a white toner charged to different polarities are contained and which develops a transparent toner image and a white toner image by respectively supplying the transparent toner and the white toner to an image portion and a non-image portion of an electrostatic latent image of the second photosensitive body.

Abstract: A hybrid type image forming apparatus is provided. The apparatus uses a developer that contains a mixture of a toner and a carrier, and includes a photosensitive body and a development unit. An electrostatic latent image is formed on the photosensitive body. The development unit includes a magnetic roller and a developing roller. The magnetic roller forms a magnetic brush containing the toner and the carrier on the outer periphery of the magnetic roller, and the developing roller is installed such that the developing roller does not contact the magnetic roller and the photosensitive body to develop the electrostatic latent image using the toner supplied from the magnetic brush. A resistivity of the developer is no greater than 109 ?cm.

Abstract: A battery powered computing device has a channel configured as a single direct current balanced differential channel. A signal transmitter is connected to the channel. The signal transmitter is configured to apply clock edge modulated signals to the channel, where the clock edge modulated signals include direct current balancing control signals. A signal receiver is connected to the channel. The signal receiver is configured to recover the direct current balancing control signals.

Abstract: Provided are a multi-pass image forming apparatus and an image forming method using the same. The multi-pass image forming apparatus includes a plurality of developers for forming a plurality of electrostatic latent images using toners having different polarities and colors in one development process and for forming a multi-color image in at least two development processes; an exposure unit for forming the plurality of the electrostatic latent images on a photosensitive medium; and an intermediate transferring unit for having a toner images transferred thereon from the photosensitive medium that overlap to form the multi-color image, wherein the toner image may overlap another toner image on the intermediate transferring unit.

Abstract: An ink-jet printing apparatus and a head position adjustment method which are capable of adjusting respective positions of multiple ink-jet heads in either a simultaneous manner or in an independent manner. The head position adjustment method can be applied to an ink-jet printing apparatus including a movable support table, a first ink-jet head fixedly coupled to the support table and provided with nozzles to eject ink, and a second ink-jet head arranged to be movable with respect to the first ink-jet head and provided with nozzles to eject ink.

Abstract: An apparatus measures a position of a mobile robot. An apparatus and method to measure the position of the mobile robot is provided, in which a plurality of sensor cells are installed on a bottom surface of a work space, and the mobile robot detects installation positions of the sensor cells, thus enabling the mobile robot to precisely measure its position, moving distance and moving direction. The mobile robot position measurement apparatus has one or more sensor cells and a sensor. The sensor cells each have unique position information, and are installed in a work area of the mobile robot. The sensor is mounted to the mobile robot to obtain the position information from the sensor cells and to measure a current position of the mobile robot.

Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.

Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.

Abstract: In one embodiment, this invention discloses polyester-based toner particles suitable to be dyed directly and coated with charge control agent and flow agent to result in particles suitable for color toner applications. The particles have ideal particle size, shape and distribution for such applications.

Abstract: This invention provides a free-flowing polyester dye powder which has superior stability and transparency for application in electro-photographic imaging systems. In another embodiment this invention provides novel chromophoric diester monomers which are reacted with diol monomers to form an invention polyester dye. A present invention toner composition comprises particulate polyester dye, and one or more optional components such as a charge control agent or a surfactant.

Abstract: Biaxially oriented films containing at least one layer of polyethylene naphthalate bibenzoate (PENBB) copolyester wherein the copolyester contains from about 60 to about 40 mol % of a first recurring unit of the formula (II). ##STR1## and about 40 to about 60 mol % of a second recurring unit of formula (I). The copolyester preferably contains less than 10 mol % of recurring units derived from terephthalate or other dicarboxylic acids. The films have a total thickness of 0.05-500 .mu.m and may contain inert particles.

Abstract: This invention provides a free-flowing polyester dye microspheric powder which has superior stability and transparency for application in electrophotographic imaging systems. In another embodiment this invention provides a non-aqueous dispersion polymerization process for producing the invention polyester dye microspheric powder. A present invention toner composition comprises polyester dye microspheric powder, and one or more optional ingredients such as a charge control agent or a surfactant.

Abstract: This invention discloses a novel process to prepare multi-block copolymers with high molecular weights from two immiscible polymer segments. In one embodiment, the two polymer segments are reacted in a solvent mixture which comprises N-methyl-2-pyrrolidinone and diglyme. Such polymers are useful for alignment layer applications in display devices.

Abstract: A rubber-polyester composite comprising a rubber and a core-and-sheath heterocomponent fiber wherein the fiber core is formed from a linear polyester derived from an alkyl glycol and an aromatic diacid, and wherein the fiber sheath is formed from a compatibilizing acid-terminated or isocyanate-terminated polyester. The fiber sheath may also be composed of a blend of a thermoplastic elastomer and the compatibilizing polyester.

Abstract: A copolyester composition comprising poly(ethylene naphthalate bibenzoate) ("PENBB") and 0.001 to 5% by weight of fine silica particles having an average diameter of 0.01 to 3.0 .mu.m. Further, films are made from this copolyester composition.

Abstract: Bilayer filaments and fused cords thereof are described. The product is particularly useful for tire cord and filaments include a core of a partially crystalline, oriented polymer and a shell or sheath formed of a blend of robber and a relatively low melting polymer. A particularly preferred embodiment includes a poly(ethylene terephalate) core as well as a sheath of copolyester blended with poly(styrene-elastomer-styrene) elastomer.

Abstract: An ultra-high molecular weight methacryloyloxybenzoic acid polymer is provided which, unlike the lower molecular weight polymers of the prior art, is stable even when undergoing melt processing. The method of producing such a polymer involves a free radical polymerization of the monomer at relatively low temperatures in an aqueous solution which contains an alkali metal hydroxide and a free radical initiator.

Abstract: An improved process for preparing wholly aromatic polyamide fibers of high performance charcteristics is provided. The process includes the steps of providing a spinning solution of a wholly aromatic polyamide, the polyamide having a sulfur content as sulfonic acid and/or sulfonate groups attached to the aromatic nuclei of at least 0.5 percent by weight based on the weight of the polyamide; spinning the spinning solution of the wholly aromatic polyamide to produce an as-spun fiber having an inherent viscosity of at least 1.0; and heat treating the as-spun fiber under sufficient tension to maintain a constant length or to elongate the fiber up to about 5 percent of the as-spun length while heating within a range of about 150.degree. C. to about 650.degree. C. The resulting fibers have a tenacity of at least 15 grams per denier, an elongation of at least 1.5 percent, and an initial modulus of at least 400 grams per denier.