Abstract: An integrated circuit in an ink jet printhead selectively activates one or more printing elements on the printhead based on a multi-dimensional addressing scheme. The integrated circuit includes a plurality of pass switching, power switching, and one or more ground switching devices for selectively connecting one or more power switching devices to ground to activate one or more of the printing elements to print an image on a print medium. The integrated circuit includes a number of first, second, third, and fourth control lines for selectively controlling the activation of one or more of the printing elements.

Abstract: This present invention is embodied in a printing system and protocol for providing efficient firing, processing, thermal and energy control of a printhead of an inkjet printer. The printing system includes a controller, a power supply and a printhead assembly having a memory device and a distributive processor integrated with an ink driver.

Abstract: The present disclosure relates to an inkjet printing system that includes an inkjet printhead having a plurality of electrical contacts. The plurality of electrical contacts include address contacts and enable contacts for enabling drop generators and drive current contacts for providing drive current to enable drop generators for selectively ejecting ink therefrom. The printing system includes a printing device having a plurality of electrical contacts including address contacts, enable contacts and drive current contacts. The plurality of electrical contacts are configured to establish electrical contact with corresponding electrical contacts on the inkjet printhead upon insertion of the inkjet printhead into the printing device. The printing device provides periodic address signals and enable signals to the address and enable contacts one the printhead. In addition, the printing device selectively applies drive current to accomplish forming images on print media.

Abstract: An ink jet apparatus which is easy to change parameters of a driving signal to be applied to an ink jet head depending on desired ink drop volume is provided. In steps S22, S24, S26 and S13, reference voltage es, reference frequency fs and waveform parameter are modified. Based on these modified parameters, the reference volume cs modified in step S16 is compared in step S17 with unit volume ci inputted in step S11. The modification of the reference parameters and the reference volume cs, and comparison between the reference volume cs and the unit volume ci are repeated till a difference is equal to or lower than a predetermined threshold. The respective reference parameters when the difference is equal to or lower than the predetermined threshold are determined as the parameters of the driving signal.

Abstract: The present invention relates generally to a gas sampling system, and specifically to a gas sampling system for transporting a hazardous process gas to a remotely located mass spectrometer. The gas sampling system includes a capillary tube having a predetermined capillary length and capillary diameter in communication with the supply of process gas and the mass spectrometer, a flexible tube surrounding and coaxial with the capillary tube intermediate the supply of process gas and the mass spectrometer, a heat transfer tube surrounding and coaxial with the capillary tube, and a heating device in communication the heat transfer tube for substantially preventing condensation of the process gas within the capillary tube.

Abstract: A print head is provided with at least ink-pressurizing cells, heating elements, and ink-ejection nozzles. In addition, the print head includes substrate members which form side surfaces and one end surface of the ink-pressurizing cells, and which are provided with the heating elements; a nozzle-formed member which forms the other end surface of the ink-pressurizing cells, and in which the ink-ejection nozzles, which individually correspond to the ink-pressurizing cells, are formed; and a head frame which supports the nozzle-formed member.

Abstract: A method and apparatus for improving the print quality of a print job having black content. The black content is configured to be applied on a predetermined location on a print medium. In the method, the black content is fortified by applying a black dye based ink on the predetermined location and the black content is printed by applying a black pigment based ink on the predetermined location. The apparatus includes a first printhead configured to fire black dye based ink droplets on the print medium, a second printhead configured to fire black pigment based ink droplets on the print medium and a processing system configured to fortify the black content by controlling the first printhead to fire droplets on the predetermined location. The processing system is further configured to print the black content by controlling the second printhead to fire droplets on the predetermined location.

Abstract: A printing apparatus in which a printhead and a print medium intermittently move relatively to each other, and the printhead performs printing on the print medium during the relative movement. The temperature of the printhead is detected, the detected temperature is compared with a predetermined threshold value, and start of new relative movement accompanied by printing is controlled in correspondence with the result of comparison. The threshold value is set in correspondence with information regarding the number of pixels for which the printhead can perform printing during one relative movement. By this arrangement, reduction of output speed can be suppressed as much as possible, and inconveniences due to temperature rise of the printhead can be prevented.

Abstract: An ink jet printer (101) print head having multiple, redundant ink energizing elements arranged into clusters or groups (812), each of which attempts to expel ink onto media in a predetermined sequence. The effects of an ink energizing element failure are mitigated by using redundant elements, each of which fires in response to the same data.

Abstract: When a plurality of heaters in the printing head are driven and the pulse width is controlled according to a change in the voltage drop corresponding to the number of driven heaters, the control range of the pulse width is properly determined to ensure a stable ink ejection. More specifically, the driving bit number for each block representing the number of heaters to be driven is counted; and based on this count value, a table is referenced to determine the pulse width of a single pulse. Then, in an inappropriate range of pulse width where the ink ejection amount varies largely, the single pulse is changed into a double pulse by referencing the table with the pulse width to obtain a double pulse driving waveform.

Abstract: A control method of an ink jet printer having plural ink jet heads which are mounted on a carriage that reciprocates in a direction substantially orthogonal to a conveying direction of a recording sheet, and are deviated in the reciprocating direction of the carriage. The ejection time width for recording one dot by ejecting ink from each ink jet head is divided into plural pitches, each pitch is associated with an address of a timing data memory, and data indicative of ejection timing of each ink jet head is stored in the corresponding address of the memory. The data indicative of the ejection timing is read from the memory in address order to independently control the ejection timing of each ink jet head. Even when the mounting position of the ink jet head is deviated within the range of each dot, adequate recording can be performed without any dot deviation by adjusting the ejection timing.

Abstract: A beam processing system, such as a focused ion beam or an electron beam system, addressing an arbitrary series of points and receives data from the points in real time. The data can be used to image or to alter the processing, even within a single dwell period, thereby allowing closed feedback loop for processing. A delay calculator automatically determines the delay between instructing the system to move the beam and detecting a signal from the work piece surface so that the detector signal can be matched with the location on the work piece at which the signal was generated.

Abstract: A computer interface for a stencil printer includes a data receiving section which receives printing data or program rewriting data from a computer, a data processing section which converts the printing data from the computer into stencil making data according to a running program, and a video data output section which outputs the stencil making data to a stencil printer with stencil making system. The data processing section is provided with a nonvolatile memory consisting of a main program block which is rewritable and stores a main program and a start-up program block which is not rewritable and stores a start-up program. A main program rewriting section rewrites a main program in the main program block when the main program which has been stored in the main program block is invalid or when the data receiving section receives program rewriting data from the computer.

Abstract: A keycap assembly for using in a keyboard is provided. The keycap assembly includes a keycap having a lever fitting slot disposed in an inner wall thereof, and a lever having a curved portion in contact with the inner wall of the keycap for forming a downward slanting angle with respect to the inner wall of the keycap when the lever is assembled with the lever fitting slot of the keycap, thereby causing the keycap assembly to be assembled with the keyboard easily.

Abstract: The present invention provides an ink jet recording head drive method for applying a drive voltage to an electro-mechanical converter which changes a pressure within a pressure generation chamber filled with ink, so that an ink droplet is ejected from a nozzle communicating with the pressure generation chamber, wherein the drive voltage has a voltage waveform including: a first voltage change process for increasing a volume of the pressure generation chamber so as to pull the ink meniscus at the nozzle opening toward the pressure generation chamber; and a second voltage change process for decreasing the volume of the pressure generation chamber, so as to eject an ink droplet, and wherein the first voltage change process is preceded by a preparatory voltage change process for slightly pulling an ink meniscus from the nozzle opening toward the pressure generation chamber.

Abstract: A positron producing apparatus which includes a vacuum chamber with a source of positrons to be supplied into the vacuum chamber forming a positron cloud within a Penning Trap. The positron cloud is to be compressed producing a thin positron beam which is extracted from the cloud and is smaller in cross-sectional area than the cloud. The positron beam is to be transmitted to a focusing apparatus which transmits the positron beam onto a solid target. The vacuum chamber is to include a cooling gas to be supplied into the vacuum chamber and a compressing device for the positron cloud is to include a rotating electric field. A method for compressing the positron cloud to produce a thin positron beam, which is to be transmitted to a solid for the purpose of analyzing properties of the solid, comprises the steps of supplying a source of positrons within a vacuum environment, forming and containing the positron cloud within a Penning Trap, producing a positron beam, and focusing of that positron beam onto a solid.

Abstract: An accepter-doped “hard” PZT is used in a piezoelectric print head instead of the conventional “soft” donor-doped material. The print head preferably is of a chevron side-shooter configuration and is advantageous for high-definition grey-scale printing.

Abstract: An ink-jet head having a plurality of discharge openings for discharging ink therefrom, and an ink chamber which communicates with the discharge openings is driven so as to achieve stable ink discharging operation, by preventing meniscus vibration caused by resonance of the meniscus surface of the ink at the discharging openings in response to the pressure wave which is produced in the ink chamber due to changes in pressure in the ink chamber resulting from the ink discharging operation. More specifically, the driving timing of the ink-jet head is adjusted in a time division manner within a predetermined driving period.

Abstract: The present invention includes as one embodiment an inkjet printing system, having a substrate, a plurality of heating elements disposed on the substrate, an ink ejection assembly adjacent the substrate forming a plurality of ink ejection chambers, each chamber associated with a different one of the heating elements and a controller operatively connected to the heating elements, the controller receiving print data and processing the print data to predict thermal conditions of a subset of the ink ejection chambers for selectively operating the corresponding heating elements of the subset.

Abstract: The present invention relates to a recording apparatus which has recording sheet discriminating means for discriminating a kind of the recording sheet to be supplied to the recording means, a printer driver for controlling a recording operation of the recording means on the basis of recording sheet an information of conforming to the kind of the recording sheet discriminated by the recording sheet discriminating means, judging means for judging whether the recording sheet of which the kind has been discriminated by the recording sheet discriminating means is included in of a preset specific kind recording sheet, and recording sheet information inputting means for inputting the information of the recording sheet to be supplied to the recording means when it is judged by the judging means that the recording sheet of which the kind has been discriminated is not included in the specific kind of recording sheets.