Abstract: Light emitting structures and methods of fabrication are described. In an embodiment, LED coupons are transferred to a carrier substrate and then patterned to LED mesa structures. Patterning may be performed on heterogeneous groups of LED coupons with a common mask set. The LED mesa structure are then transferred in bulk to a display substrate. In an embodiment, a light emitting structure includes an arrangement of LEDs with different thickness, and corresponding bottom contacts with different thicknesses bonded to a display substrate.

Abstract: The invention relates to a modulator of small conductance calcium activated K+ channels of the vestibular nuclei cells for use in the treatment of a lesional vestibular disorder in a patient in need thereof, and to a pharmaceutical composition comprising such modulator, for such a use.

Abstract: An apparatus (1) comprising a receiver (20) for receiving signals via channels defined by a channel transfer matrix H and a transmitter (10) is provided with a channel estimator (30) for generating first and second channel estimation information and a correlator estimator (31) for correlating the first and second channel estimation information with each other and for, in response to a correlation, generating a correlation factor and a transmitting feedback unit (32) for, in dependence of the correlation factor, estimating eigenparameters of a covariance matrix HHH and for, in response to an estimation, generating feedback information and a receiving feedback unit (33) for receiving the feedback information for adjusting the transmitter (10), to avoid complex matrix processes and to get the feedback information in a simple way. A power estimator (34) estimates a first and second power value for the first and second channel estimation information for normalizing the correlation factor.

Abstract: A transmitter (10) of an apparatus (1) for transmitting signals via at least two channels simultaneously is provided with a data processing system (30), a first serial branch (20) comprising a first inverse Fourier transformer (40,42), a second serial branch (21) comprising a second inverse Fourier transformer (41), a digital-to-analog converting system (50-53) and a radio system (60-63), the first and second serial branches being coupled in parallel. This transmitter (10) is backward compatible to a high extent. The radio system (60-63) either comprises a radio unit (60,61,62) per serial branch (20,21) or is located after the combiner (15-17) to save hardware. In the latter case, a component converter (90) or an upsampler/phaseshifter (100) is required in the first serial branch (20). The digital-to-analog converting system (50-53) either comprises a converters (50,51,52) per serial branch (20,21) or is located after a combiner (15-17) to save hardware.

Abstract: A method for calibrating a digital camera and a printer whereon the image taken with such a camera is printed so as to have a faithful color rendition. The method comprises the steps of: taking a picture of a test original with a digital camera to be calibrated creating a first set of digital data, feeding this first set of digital data to a computer memory, using this first set of digital data to drive a printer to be calibrated, producing a print of the different color patches, taking a picture of this print with the same digital camera to have a second set of digital data, feeding the second set of digital data to the computer memory for comparing this second set with the first set of data and calculating a difference between these two sets, and using the calculated difference to provide a look-up table.

Abstract: A single pass printer, having a printing width (PW) is provided or printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), wherein, i) a number n, equal to or larger than 2, of printing engines, each containing a toner transferring element with a longitudinal axis (width (WPE)) smaller than the printing width (PW) are present, and at least two of the n printing engines, each containing a toner transferring element with a longitudinal axis in the direction of width (WPE), are located so that the longitudinal axis do not coincide. Preferably the printing engines are electro(stato)graphic engines, especially Direct Electrostatic Printing (DEP) engines or electrophotographic engines.

Abstract: A direct electrostatic printing device includes a printhead structure with apertures and control electrodes associated with the apertures for delivering toner from a toner source to a substrate in accordance with image data. A first voltage source is provided to establish a flow of toner particles from the toner source to the substrate. A second voltage source is provided to establish a control voltage between the toner source and the control electrodes to control toner flow in accordance with the image data. The second voltage source provides a first AC field between a toner source and the control electrodes to permit toner flow and a second, diminished, AC field between the toner source and the control electrodes in order to stop the toner flow.

Abstract: A printer, with printing width (PW), is provided, for printing toner image on a substrate, having a width (WS) and a length (LS), comprising a DEP printing engine, havinga toner delivery means, having a surface whereon charged toner particles are present for providing a flow of the toner particles from that surface to the substrate,a printhead structure with printing apertures and control electrodes, interposed in the flow of toner particles for image-wise controlling that flow, wherein:the toner delivery means comprises a number, n equal to or larger than 2, of toner applicator modules, each having a width, WTD, smaller than the printing width PW, and at least two of the number, n of toner applicator modules are positioned in a staggered configuration with respect to the substrate.Preferably the printing width of the printer is at least 40 cm.

Abstract: A single pass printer, having a printing width (PW) is provided for printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), wherein, i) a number n, equal to or larger than 2, of printing engines, each containing a toner transferring element with a longitudinal axis (width (WPE)) smaller than the printing width (PW) are present, and at least two of the n printing engines, each containing a toner transferring element with a longitudinal axis in the direction of width (WPE), are located so that the longitudinal axis do not coincide. Preferably the printing engines are electro(stato)graphic engines, especially Direct Electrostatic Printing (DEP) engines or electrophotographic engines.

Abstract: A printhead structure is provided comprising individual control electrodes (106a) in combination with printing apertures (107) and a shield electrode (106b), both electrodes separated by an insulating material wherein both the shield electrode and the control electrodes have openings and either the shield electrode or each of the control electrodes does not reach as far as the edges of the printing apertures. The linear dimension of the openings in the shield electrode or in each of the control electrodes is at least 1.1 times larger than the longest linear dimension of each of the printing apertures present in the openings. A DEP device using such a printhead structure is also disclosed.

Abstract: A device for use in the technique of direct electrostatic printing (DEP) on an intermediate or final substrate is described, comprising a receiving member support 5 having control back electrodes 5b and a common shield back electrode 5a; a printhead structure 6 having control print electrodes 6a in combination with apertures 7 and a common shield print electrode 6b; a toner delivery means 1 presenting a cloud 4 of toner particles in the vicinity of said apertures 7. The control print electrodes 6a in the printhead structure 6 and the control back electrodes 5b in the receiving member support 5 are positioned in a 1 to 1 relationship, and the control electrodes of both the printhead structure 6 and the receiving member support 5 are driven in an imagewise manner by a variable voltage source, in order to get a specific toner density on the receiving member substrate 9.

Abstract: A DEP device is provided that comprises a back electrode (105), a printhead structure (106), an array of printing apertures (107) in the printhead structure (106) through which a particle flow can be electrically modulated by a control electrode (106a), a toner delivery means (101), presenting a cloud (100) of dry toner particles in the vicinity of the apertures (107), characterized in that the toner cloud (100) is formed in the vicinity of the apertures (107) by means of a gas stream. The toner cloud is formed by detaching toner particles from a charged toner conveyer by the gas stream, or by forming a fluidized bed of toner particles.

Abstract: A printer, with printing width (PW) of at least 30 cm printing a toner image on a large substrate, having a width (WS) and a length (LS), including a latent image bearing member having a width (WLI) equal to or larger than the printing width and at least two means for delivering toner are arranged in a staggered configuration around the latent image bearing member and each having a width (WTD) smaller than the width (WLI) of the latent image bearing member.Preferably the latent image bearing member is a photoconductive member.A printer with a shuttle having a swath width of at least 30 cm is also disclosed.

Abstract: An apparatus for direct electrostatic printing includes a back electrode and a printhead structure having a plastic insulating layer and printing apertures arranged therein. Individual control electrodes are combined with the printing apertures on a first side of the insulating layer, and a shield electrode is combined with the printing apertures on a second side of the insulating layer. A toner delivery apparatus is also included for delivering a cloud of dry toner particles in the vicinity of the printing apertures. The printing apertures are constructed and arranged such that, when applying a potential difference of 200V between the shield electrode and each individual control electrode, a current of no more that 50 .mu.A flows from each individual control electrode to the corresponding shield electrode through the corresponding printing aperture. Methods for forming the printing apertures in such a printhead are also disclosed.

Abstract: A device for direct electrostatic printing (DEP) including a back electrode, a printhead structure made from an insulating material and having a control electrode in combination with printing apertures, and a toner delivery apparatus that presents a cloud of toner particles in the vicinity of the printing apertures, in which the printhead structure is tightly stretched over a frame by means of lateral forces and the printhead structure has an overall flatness equal to or better than 50 .mu.m.

Abstract: A scanning apparatus for linewise reproducing an image on one face of a transparent image carrier onto light-sensitive means, which comprises support means (10) defining a support surface for the image carrier (12), an elongated light source (21b), a rod-like aspherical lens (23) disposed between said light source (21b) and said support means (10) for focussing said elongated light source onto an image carrier located on said support means, the characteristics of said lens (23) and its position with respect to said support means being such that the illuminating angle (.alpha.) of an image carrier on said support means (10) is at least 20 angular degrees and that light intensity variations over said angle are smaller than 15%, and an imaging lens (26) for forming an image of a scanned line (24) of an image on said carrier onto said light-sensitive means.

Abstract: A suction pipe for a suction-type submerged pool cleaner has a spigot at one end for connection to the pool cleaner and a spigot at the other end for connection to a suction source. Part of the suction pipe extending from the suction head is formed into a substantially helical-like shape.

Abstract: The invention relates to a process and apparatus for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with isobutene-containing hydrocarbons in a reaction zone having alternate beds of sulfonated resin catalyst and catalyst-free distillation zones wherein the zones also contain liquid redistribution plates.

Abstract: Process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with isobutene-containing hydrocarbons in a reaction zone comprising alternate beds of sulfonated resin catalyst and catalyst-free distillation zones, said zones also comprising liquid redistribution plates.

Abstract: The invention concerns a process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with an isobutene-containing hydrocarbon mixture.This process is characterized by the steps of:introducing the reactants into a reaction-distillation zone containing at least two superposed and non-contiguous fixed beds (2a, 2b) of catalyst of the sulfonated resin type, wherein passage-ways are provided for a vapor phase, at least one distillation tray (4a), at least one liquid redistribution tray (5),maintaining distillation conditions in said zone so as to have a descending liquid phase and an ascending vapor phase,maintaining a continuous liquid phase in the lower part of said beds,discharging a vapor phase containing a high proportion of unconverted hydrocarbons from the top (8) of said zone, andwithdrawing a liquid phase of high MTBE content from the bottom (10) of said zone.