Abstract: A printhead circuit for providing pulses for driving two or more actuating elements, the circuit comprising a cold switch drive circuit, for driving an actuating element for a first phase of a first pulse, the cold switch drive circuit having a cold drive switch for selectively coupling a drive waveform to the actuating element during the first phase according to a print signal; and a hot switch drive circuit, for driving the actuating element for a second phase of the first pulse, wherein the hot switch drive circuit is configured to drive the actuating element during the second phase according to an actuating element compensation indication signal.

Abstract: There is provided a droplet deposition apparatus comprising: control circuitry configured to generate a common drive waveform; storage to store data, wherein the storage comprises a buffer to store scheduled image data relating to one or more pixels; a droplet deposition head having one or more actuator elements configured to be driven in response to drive pulses derived from the common drive waveform; and wherein the common drive waveform comprises a plurality of pixel periods comprising a firing phase and a non-firing phase, each firing phase comprising a firing pulse and each non-firing phase comprising a non-firing pulse, wherein the characteristics of each non-firing pulse are defined in response to the data in storage, and wherein, the firing pulse of a first pixel period is applied as a drive pulse to an actuator element based on the scheduled image data relating to a first pixel, and wherein the non-firing pulse of the first pixel period is applied as a drive pulse to the actuator element based on pas

Abstract: The present invention relates to novel nanocomposite materials, methods of making nanocomposites and uses of nanocomposite materials.

Abstract: A radio frequency (RF) transmitter, comprising a Tesla transformer and an LC oscillator, said Tesla transformer comprising inner and outer conductors (10, 20), said inner conductor (20) comprising a generally tubular magnetic core (22) carrying a conductive member (22a) on its outer surface and said outer conductor (10) comprising a generally tubular magnetic core (13) carrying a conductive member (12) on its inner surface, said LC oscillator including a secondary winding module (40) comprising a generally tubular body (41) carrying a conductive coil (42) on its outer surface, said inner conductor (20), outer conductor (10) and secondary winding module (40) being arranged in a substantially concentric nested configuration such that said inner conductor (20) is located within said secondary winding module (40) and said secondary winding module (40) is located within said outer conductor (10), wherein a first portion (45) of relatively high permittivity dielectric material is provided between said conductive me

Abstract: A radio frequency (RF) transmitter, comprising a Tesla transformer and an LC oscillator, said Tesla transformer comprising inner and outer conductors (10, 20), said inner conductor (20) comprising a generally tubular magnetic core (22) carrying a conductive member (22a) on its outer surface and said outer conductor (10) comprising a generally tubular magnetic core (13) carrying a conductive member (12) on its inner surface, said LC oscillator including a secondary winding module (40) comprising a generally tubular body (41) carrying a conductive coil (42) on its outer surface, said inner conductor (20), outer conductor (10) and secondary winding module (40) being arranged in a substantially concentric nested configuration such that said inner conductor (20) is located within said secondary winding module (40) and said secondary winding module (40) is located within said outer conductor (10), wherein a first portion (45) of relatively high permittivity dielectric material is provided between said conductive me

Abstract: A method for achieving a representation of an object within a data structure for a Computer Aided Design system employing a Medial Axis Transformation (MAT), the representation of the object comprising a set of adjacent bounded surface elements called MAT faces, the MAT faces being bound by sets of MAT edges, which are portions of curves lying on a surface of the MAT faces on either side of the edge, and points where several MAT faces meet are called MAT vertices.

Abstract: A driver circuit for driving actuating elements for printing, has a switch for coupling a common drive signal to provide element drive pulses to drive each actuating element according to a print signal. A timing control circuit controls the switch during sloped transitions of the common drive signal, to trim an amplitude of the actuating element drive pulses according to a common offset configurable for at least two of the actuating elements in common, and according to an element specific offset, configurable for each of the actuating elements. The offsets can be dynamic or static, and some parts of the timing can be implemented in analog form. This enables more types of errors to be compensated, and can enable the element specific offset to be implemented with simpler circuitry with less heat dissipation or less space or needing less precision and thus less cost.

Abstract: A drive circuit (100) for driving actuators of a printhead (97) from a common drive waveform has a switching circuit (32) for coupling the common drive waveform to an actuator (1,2), and a timing circuit (10) to control the switching circuit to form a drive pulse from the common drive waveform. The drive pulse is trimmed by controlling a duration (TTRIM) of a step at an intermediate level (VHOLD) in the drive pulse. This can improve the trade-off between available range of trimming and thermal efficiency because the voltage drop across the switching circuit can be reduced, compared to trimming only the height. Decoupling during a flat portion of the common drive waveform can enable the timing of the decoupling to be more relaxed compared to decoupling during a slope. Such relaxing can enable costs, complexity and thermal loading to be reduced.

Abstract: A device for identifying the presence of a specific target molecule or biomarker by the detection of a change in an electrical property includes a measurement sensor 8 comprising a semiconducting sensor structure 12 capable of conjugating with the biomarker, thus giving rise to the said change in electrical property, and an electrode system 3, 4 for conducting a signal from the device. According to the invention there is a further such sensor 9, of substantially identical form but having its sensor structure 14 already conjugated with the biomarker, or otherwise capped, e.g. using a further oligonucleotide strand, so as to act as an internal reference. When a biological sample, e.g. saliva, is applied to the electrodes, the reference enables the discounting of all environmental effects other than the biomarker. The invention provides a simple, cheap and accurate test for one or more biomarkers that can be used in the field without complex equipment.

Abstract: A device for identifying the presence of a specific target molecule or biomarker by the detection of a change in an electrical property includes a measurement sensor 8 comprising a semiconducting sensor structure 12 capable of conjugating with the biomarker, thus giving rise to the said change in electrical property, and an electrode system 3, 4 for conducting a signal from the device. According to the invention there is a further such sensor 9, of substantially identical form but having its sensor structure 14 already conjugated with the biomarker, or otherwise capped, e.g. using a further oligonucleotide strand, so as to act as an internal reference. When a biological sample, e.g. saliva, is applied to the electrodes, the reference enables the discounting of all environmental effects other than the biomarker. The invention provides a simple, cheap and accurate text for one or more biomarkers that can be used in the field without complex equipment.

Abstract: A method of producing graphene by the electrochemical insertion of alkylammonium cations in a solvent into graphite is disclosed.

Abstract: A system for dynamically managing email access and content is described, wherein the email system based on email rules and filters may modify emails presented to users or limit access to the email content via a specific architecture.

Abstract: A printhead for a printer has actuating elements for ejecting fluid, and a drive circuit for selectively applying a drive waveform having several slopes, to an actuating element, according to a print signal. A resulting printhead has a lesser sensitivity to changes of slew rate in one slope of the drive waveform than a sensitivity to change in another. The drive circuit has a variable resistance circuit, and a control circuit to control the variable resistance circuit to adjust a slew rate of the slope of lesser sensitivity according to a trim signal. By making the adjustment less sensitive, the trim signal and trim control can have more relaxed tolerances, thus can employ simpler, cheaper circuitry.

Abstract: A method for the production of graphene and graphite nanoplatelet structures having a thickness of less than 100 nm in an electrochemical cell, wherein the cell comprises: (a) a negative electrode which is graphitic; (b) a positive electrode which may be graphitic or another material; and (c) an electrolyte which is ions in a solvent where the cations are organic ions and metal ions; and wherein the method comprises the step of passing a current through the cell.

Abstract: A network service database stores abstractions of services provided by network elements. The network elements may proactively initiate communication with the service database. Additionally, network elements may update the service database when the network element experiences a state change. Client applications may contact the service database to perform functions, such as provisioning network services, billing, and fault monitoring without having to be concerned with the underlying details of each of the network elements.

Abstract: The present invention provides a method for the production in an electrochemical cell of one or more of graphene, graphite nanoplatelet structures having a thickness of less than 100 nm, and graphane, wherein the cell comprises: (a) a negative electrode which is graphitic; (b) a positive electrode which may be graphitic or another material; and (c) an electrolyte selected from (i) an ionic liquid; (ii) a deep eutectic solvent; and (iii) a solid ionic conductor, optionally further comprising (iv) one or more ionic species, wherein the amount of (i), (ii) or (iii) and (iv) is greater than 50 wt % based on the total weight of the electrolyte; and wherein the electrolyte includes a mixture of different cations; and wherein the method comprises the step of passing a current through the cell to intercalate ions into the graphitic negative electrode so as to exfoliate the graphitic negative electrode.

Abstract: A printhead for a printer has actuating elements for ejecting fluid, and a drive circuit for selectively applying a drive waveform having several slopes, to an actuating element, according to a print signal. A resulting printhead has a lesser sensitivity to changes of slew rate in one slope of the drive waveform than a sensitivity to change in another. The drive circuit has a variable resistance circuit, and a control circuit to control the variable resistance circuit to adjust a slew rate of the slope of lesser sensitivity according to a trim signal. By making the adjustment less sensitive, the trim signal and trim control can have more relaxed tolerances, thus can employ simpler, cheaper circuitry.

Abstract: A driver circuit for driving actuating elements for printing, has a switch for coupling a common drive signal to provide element drive pulses to drive each actuating element according to a print signal. A timing control circuit controls the switch during sloped transitions of the common drive signal, to trim an amplitude of the actuating element drive pulses according to a common offset configurable for at least two of the actuating elements in common, and according to an element specific offset, configurable for each of the actuating elements. The offsets can be dynamic or static, and some parts of the timing can be implemented in analog form. This enables more types of errors to be compensated, and can enable the element specific offset to be implemented with simpler circuitry with less heat dissipation or less space or needing less precision and thus less cost.

Abstract: A linkage mechanism for a wet shaving razor is provided. The linkage mechanism is pivotally connected to and suspended from the handle at one end and pivotally and removably attached to the cartridge carrier at an opposite end allowing the cartridge carrier to pivot about a virtual pivot axis located below the shaving plane and into the skin. The linkage mechanism provides flexibility in positioning the virtual pivot axis since it is not limited to the physical constraints of the cartridge. As a result, the shaving razor cartridge has a flatter contact with the skin throughout the shaving stroke providing shaving comfort with reduced nicks and cuts.

Abstract: A system for displaying information on multiple mobile devices whereby the information displayed for each device is determined by the device's physical location in relation to other devices physical locations. The information may be graphic, text, numerical or audible.