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    • 2. 发明授权
    • Battery charging system and method
    • 电池充电系统及方法
    • US08564246B2
    • 2013-10-22
    • US13075137
    • 2011-03-29
    • John M. WadeJaime H. Bohorquez
    • John M. WadeJaime H. Bohorquez
    • H02J7/00
    • H02J7/0018
    • A battery charging system and method, includes a high voltage charger for charging a group or string of series connected battery cells, and a group of individual cell chargers for charging individual ones of the cells. The charging technique includes detecting at least one cell being charged to a predetermined voltage, and then inhibiting the high voltage charger from further charging any of the cells. The individual cell chargers charge individual ones of the cells, except the at least one cell charged to the predetermined voltage.
    • 一种电池充电系统和方法,包括用于对串联连接的电池单元的组或串进行充电的高压充电器,以及用于对单个电池单体充电的一组单独的电池充电器。 充电技术包括检测至少一个被充电到预定电压的电池,然后禁止高电压充电器进一步对任何电池充电。 单个电池充电器对单个电池充电,除了充电到预定电压的至少一个电池。
    • 5. 发明授权
    • Thermal inkjet printhead and printer energy control apparatus and method
    • 热喷墨打印头和打印机能量控制装置及方法
    • US06183056B2
    • 2001-02-06
    • US08958951
    • 1997-10-28
    • George H CorriganJohn M Wade
    • George H CorriganJohn M Wade
    • B41J2938
    • B41J2/04506B41J2/0451B41J2/04528B41J2/04541B41J2/04543B41J2/04563B41J2/0457B41J2/04573B41J2/0458B41J2/04581B41J2/0459B41J2/04591H05K1/118
    • A method of operating a thermal ink jet printer with a removable print head having a plurality of ink firing resistors, the operation including calibrating the printer by determining a nominal input voltage above a threshold necessary for simultaneous operation of a plurality of the resistors. Then, during printing, detecting the input voltage on the print head at an input node connected to the resistors and generating a firing pulse having a duration based on the detected input voltage at the node. Thus, a detected input voltage higher than the nominal voltage is compensated for by a shortened firing pulse. The method may be achieved in a removable ink jet print head having a connector with many electrical inputs connectable to a printer, and a voltage input node connected to the connector. The print head has numerous firing resistors connected to the input node. An energy control circuit is connected to the input node and is connected to the resistors to fire the resistors with a firing pulse having a duration inversely related to the voltage at the input node, such that the firing energy is maintained in control by varying the firing pulse duration to compensate for voltage variations.
    • 一种操作热喷墨打印机的方法,其具有具有多个喷墨电阻器的可拆卸打印头,该操作包括通过确定高于多个电阻器的同时操作所必需的阈值的标称输入电压校准打印机。 然后,在打印期间,在连接到电阻器的输入节点处检测打印头上的输入电压,并产生具有基于在节点处检测到的输入电压的持续时间的点火脉冲。 因此,通过缩短的点火脉冲来补偿高于额定电压的检测输入电压。 该方法可以在具有可连接到打印机的许多电输入端的连接器和连接到连接器的电压输入节点的可移动喷墨打印头中实现。 打印头具有连接到输入节点的许多点火电阻。 能量控制电路连接到输入节点并且连接到电阻器以用具有与输入节点处的电压成反比的持续时间的点火脉冲来触发电阻器,使得通过改变点火来保持发射能量的控制 脉冲持续时间以补偿电压变化。
    • 8. 发明授权
    • Inkdrop-volume test using heat-flow effects, for thermal-inkjet printers
    • 使用热流效应的墨滴体积测试,用于热喷墨打印机
    • US5714989A
    • 1998-02-03
    • US156172
    • 1993-11-22
    • John M. Wade
    • John M. Wade
    • B41J2/05B41J2/125B41J2/175B41J2/195
    • B41J2/04506B41J2/04515B41J2/04528B41J2/0454B41J2/04563B41J2/0458B41J2/04596B41J2/17566
    • The invention provides methods of determining ink volume ejected from a printhead, controlling ejected volume, and warning of low ink supply. A printhead is fired to eject ink: this operating step includes heating the ink and head; carrying away heat, in the ejected volume, from the head; and conveying a volume of cooler ink to the head, from a supply, to replace the ejected ink. The method finds the head cooling caused by the carrying-away and conveying; and to this applies a known calibration to find the volume ejected. The heating is roughly equal to that which occurs in printing. Besides the operating step, the method preferably includes finding (a) printhead cooling due to static mechanical thermal drain alone, and (b) printhead thermal response to warming by the same amount of heat as used to fire the pen in the operating step--but without ink ejection. These baseline values are used with the cooling observed in the operating step to isolate the effect of ink ejection and so find the cooling more accurately. The warming can be done by applying electrical energy to printhead-firing resistors, at pulse widths narrower than used for firing--but greater frequency--to inject power equal to that in normal operation. The temperature measurements are made by monitoring a conventional sensing resistor in the pen, and can include fitting a linear slope to the observed temperature-vs.-time relation.
    • 本发明提供了确定从打印头喷射的墨水量,控制喷射体积以及警告低墨水供应的方法。 打印头被喷射以喷射墨水:该操作步骤包括加热墨水和头部; 在喷射的体积中从头部携带热量; 并从供应源将一定体积的较冷的油墨输送到头部,以更换喷射的油墨。 该方法发现由携带和输送引起的头部冷却; 并且这将应用已知的校准来查找弹出的音量。 加热大致等于在印刷中发生的加热。 除了操作步骤之外,该方法优选地包括:(a)由于单独的静态机械热排出而导致的打印头冷却,以及(b)在操作步骤中用于对笔进行相同热量的打印头热响应, 没有墨水喷射。 这些基准值与操作步骤中观察到的冷却一起使用,以隔离喷墨的影响,因此更准确地找到冷却。 可以通过将电能施加到打印头点火电阻器上,在比用于点火的脉冲宽度窄的情况下进行升温,但是更大的频率 - 注入与正常操作相同的功率。 通过监测笔中的传统感测电阻器来进行温度测量,并且可以包括将线性斜率拟合到观察到的温度 - 时间关系。