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    NOZZLE HEALTH
    1.
    发明申请
    NOZZLE HEALTH 审中-公开

    公开(公告)号：WO2021257087A1

    公开(公告)日：2021-12-23

    申请号：PCT/US2020/038653

    申请日：2020-06-19

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： AMELA CONESA, Eduardo ,  BLANCH PINOL, Marta ,  CANTO ESTANY, Diana

    IPC: B41J2/05 ,  B41J2/165 ,  B41J29/393

    Abstract: In one example a method comprising causing, by a processor, a nozzle of a printhead to discharge a printing fluid droplet toward a drop detector receiving, from the drop detector, by a processor, a signal indicative of the printing fluid droplet reaching a drop detection zone, and determining, by a processor, a flight time for the nozzle. The flight time is the time taken for the printing fluid droplet to reach the drop detection zone. The example method comprises comparing, by a processor, the flight time to a predetermined time for the printing fluid and determining, by a processor, a health parameter of the nozzle based on the comparison.

    PRINTING APPARATUS AND PRINT MASK GENERATION
    2.
    发明申请
    PRINTING APPARATUS AND PRINT MASK GENERATION 审中-公开
    印刷设备和打印蒙版生成

    公开(公告)号：WO2018080467A1

    公开(公告)日：2018-05-03

    申请号：PCT/US2016/058779

    申请日：2016-10-26

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： BLANCH PINOL, Marta ,  AMELA, Eduardo ,  CANTO ESTANY, Diana

    IPC: G06F3/12 ,  B41J29/38 ,  B41J2/005

    CPC classification number: B41J29/38 ,  B41J2/2132 ,  B41J19/142

    Abstract: A printing apparatus comprises a print head to print an image by scanning the print head across a print medium in a first direction and in a second direction, the second direction being opposite to the first direction. The print head includes an array of nozzles, the array comprising a first group of nozzles and a second group of nozzles which are arranged along the length of the array of nozzles. A controller controls the print head to eject print agent from a first number of nozzles of the first group of nozzles when scanning the print head in the first direction and from a first number of nozzles of the second group of nozzles when scanning the print head in the second direction; and further to eject print agent from a second number of nozzles of the first group of nozzles when scanning the print head in the second direction wherein the second number of nozzles is greater than one and less than the first number of nozzles of the first group of nozzles.

    Abstract translation: 打印设备包括打印头，用于通过沿第一方向和第二方向在打印介质上扫描打印头来打印图像，第二方向与第一方向相反。 打印头包括喷嘴阵列，该阵列包括沿着喷嘴阵列的长度布置的第一组喷嘴和第二组喷嘴。 控制器控制打印头当在第一方向上扫描打印头时从第一组喷嘴中的第一数量的喷嘴中喷射打印剂，并且当在第一组喷嘴中扫描打印头时从第二组喷嘴中的第一数量的喷嘴中喷射打印剂 第二方向; 并且当在所述第二方向上扫描所述打印头时，进一步从所述第一组喷嘴的第二数量的喷嘴喷射打印剂，其中所述第二数量的喷嘴大于所述第一组喷嘴中的所述第一数量的喷嘴并且小于所述第一组 喷嘴。

    DROPS BASED ON MEDIA TEMPERATURE
    4.
    发明申请
    DROPS BASED ON MEDIA TEMPERATURE 审中-公开

    公开(公告)号：WO2018203897A1

    公开(公告)日：2018-11-08

    申请号：PCT/US2017/030879

    申请日：2017-05-03

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： BLANCH PINOL, Marta ,  CANTO ESTANY, Diana ,  AMELA CONESA, Eduardo

    IPC: B41J2/04 ,  B41J2/21

    Abstract: In an example, a print system identifies a number of drops to eject corresponding to an expected variation in print fluid based on media temperature and generate print instructions to operate a fluid eject device to that effect. In another example, a print system includes a temperature engine to identify a temperature, a compensator engine to identify a number of drops of print fluid based on the media temperature, and a control engine to generate print instructions to operate a fluid ejection device to place the number of drops of print fluid on media.

    PRINTHEAD CALIBRATION
    9.
    发明申请
    PRINTHEAD CALIBRATION 审中-公开
    PRINTHEAD校准

    公开(公告)号：WO2018017054A1

    公开(公告)日：2018-01-25

    申请号：PCT/US2016/042912

    申请日：2016-07-19

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： CANTO ESTANY, Diana ,  WHITE, Larry H, ,  SOLE, Macia

    IPC: B41J2/05

    Abstract: Thermal inkjet printing wherein a printhead has ink ejection elements which are energizable by electrical pulses of a given energy with fire pulses of an amplitude (V) and a fire pulse width (fp). A printer controller sends commands to the printhead to spit ink drops, one or more temperature sensors coupled to the printhead measure a temperature of the printhead, and a calibration component coupled to the temperature sensor variably adjusts the fire pulse energy provided to the having ink ejection elements of the printhead. The calibration component initiates calibrating the printhead, spitting a number (X) of ink drops at a frequency (Y) by the electrical pulses, reading and storing printhead temperature, varying the fire pulse energy by repeating spitting ink drops and reading and storing printhead temperature, finding minimum temperature from the stored printhead temperatures, and deriving an operational fire pulse (fp op ) from a fire pulse (fp on ) that has produced the minimum temperature, wherein the printer controller uses the operational fire pulse (fp op ) for printing.

    Abstract translation: 热喷墨打印，其中打印头具有喷墨元件，该喷墨元件可由具有幅度（V）和火焰脉冲宽度（fp）的火焰脉冲的给定能量的电脉冲激励。 打印机控制器向打印头发送指令以吐出墨滴，耦合到打印头的一个或多个温度传感器测量打印头的温度，并且耦合到温度传感器的校准组件可变地调整提供给具有喷墨的喷射脉冲能量 打印头的元素。 校准部件开始校准打印头，通过电脉冲以频率（Y）喷出数量（X）的墨滴，读取并存储打印头温度，通过重复吐出墨滴并读取和存储打印头温度来改变激发脉冲能量 ，从存储的打印头温度中找出最低温度，并且从已经产生最低温度的火焰脉冲（fp_on）导出操作火焰脉冲（fp_op_），其中， 打印机控制器使用操作启动脉冲（fp op ）进行打印。

    PRINTING TO TEXTILES
    10.
    发明申请
    PRINTING TO TEXTILES 审中-公开

    公开(公告)号：WO2022250643A1

    公开(公告)日：2022-12-01

    申请号：PCT/US2021/033821

    申请日：2021-05-24

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： BORRELL BAYONA, Maria Isabel ,  CANTERO LAZARO, Marina ,  CANTO ESTANY, Diana

    IPC: B41F16/02 ,  D06P5/24

    Abstract: An example method comprises providing a textile on which a printing fluid is to be deposited at a printing station and supporting the textile by a support member. The support member is to advance the textile through the printing station. The example method comprises increasing a dimension of the support member to increase a dimension of the textile, and advancing the textile toward the printing station by advancing the support member toward the printing station.

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