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公开(公告)号：US07019560B2
公开(公告)日：2006-03-28
申请号：US10263512
申请日：2003-01-13
IPC分类号： H03K19/0175 , H03K19/094
CPC分类号： B41J2/04541 , B41J2/0455 , B41J2/04581
摘要： A circuit for controlling a piezoelectric transducer includes an N-channel FET having a gate electrode, a drain electrode coupled to a high voltage signal source Vpp, wherein Vpp is a positive going pulse train, and a source electrode coupled to an output Vcntrl for controlling the transducer and a charging circuit, responsive to a low voltage input signal Vpp_sel, for charging the FET gate to a bias voltage greater than the FET's threshold voltage while Vpp is near zero volts and for maintaining the bias voltage on the FET gate while Vpp ramps up to a value greater than the bias voltage and until Vpp_sel is removed. The control circuit reduces switching time and reduces current spikes in the power supplies to the chip.
摘要翻译： 用于控制压电换能器的电路包括具有栅电极的N沟道FET，耦合到高电压信号源Vpp的漏极，其中Vpp是正向脉冲串，以及耦合到输出Vcntr1的源电极用于控制 传感器和充电电路，响应于低电压输入信号Vpp_sel，用于将FET栅极充电到大于FET阈值电压的偏置电压，同时Vpp接近零伏，并且用于在Vpp斜坡时保持FET栅极上的偏置电压 达到大于偏置电压的值，直到Vpp_sel被去除。 控制电路减少了开关时间，并减少了芯片电源的电流尖峰。
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公开(公告)号：US5689288A
公开(公告)日：1997-11-18
申请号：US261589
申请日：1994-06-17
CPC分类号： B41J2/17566 , B41J2002/17583
摘要： A flexible bar connected to an actuator is suspended within an ink reservoir. The bar is preferably mounted in a cantilever or free-standing mode and vibrates in response to signals from the actuator. When the actuator signals are discontinued the bar continues to vibrate and causes the actuator to generate signals that are analyzed to determine the level of ink in the reservoir.
摘要翻译： 连接到致动器的柔性杆悬挂在墨水容器内。 该杆优选地以悬臂或独立模式安装，并且响应于来自致动器的信号而振动。 当致动器信号中断时，杆继续振动，并使致动器产生被分析的信号，以确定储存器中的墨水量。
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公开(公告)号：US08550609B2
公开(公告)日：2013-10-08
申请号：US11986505
申请日：2007-11-21
IPC分类号： B41J2/175
CPC分类号： B41J2/17593 , B41J2002/17579
摘要： A solid ink printer includes a solid ink measurement system that helps ensure an adequate supply of solid ink is in the feed channels delivering solid ink to a melting device within a printer. The solid ink measurement system includes a driving electrode mounted along a substantial length of a first structure of a first solid ink feed channel, a sensing electrode mounted along a substantial length of a second structure of the first solid ink feed channel, the sensing electrode being opposite and generally parallel to the driving electrode, an AC voltage source coupled to the driving electrode to generate an electrical field emitted from the driving electrode, and a capacitance measurement circuit coupled to the sensing electrode to receive an electrical signal induced in the sensing electrode by the electrical field generated by the driving electrode, the capacitance measurement circuit being configured to identify an amount of solid ink in the first feed channel that corresponds to the electrical signal received from the sensing electrode.
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公开(公告)号：US08382221B2
公开(公告)日：2013-02-26
申请号：US12164714
申请日：2008-06-30
IPC分类号： B41J2/195 , B41J29/393
CPC分类号： B41J2/17566 , B41J2002/17579
摘要： An ink level sensing system that exhibits good sensitivity is described herein. The system includes a first probe having a first active surface, a second probe having a second active surface facing the first active surface, a memory in which data indicative of a conductivity curve and command instructions are stored, and a processor configured to execute the command instructions to associate a level of fluid in a reservoir with a first signal indicative of the electrical coupling between the first active surface and the second active surface with reference to the data indicative of a conductivity curve.
摘要翻译： 本文描述了具有良好灵敏度的油墨液位检测系统。 该系统包括具有第一有源表面的第一探针，具有面向第一有源表面的第二有源表面的第二探针，其中存储指示电导率曲线和命令指令的数据的存储器，以及被配置为执行命令的处理器 参考指示电导率曲线的数据，将贮存器中的液体水平与指示第一活性表面和第二活性表面之间的电耦合的第一信号相关联的指令。
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公开(公告)号：US08356869B2
公开(公告)日：2013-01-22
申请号：US12823618
申请日：2010-06-25
申请人： David L. Knierim
发明人： David L. Knierim
IPC分类号： B41J29/38
CPC分类号： B41J2/0458 , B41J2/04581
摘要： A device has an output circuit arranged to receive a voltage pulse, a body diode associated with the output circuit, and a detection circuit electrically coupled to the voltage pulse and the output circuit, such that when the voltage pulse transitions from high to low, the detection circuit is configured to activate the output circuit to reduce current in the body diode. A circuit to control parasitic power dissipation in an integrated circuit has a P-channel FET having a source electrode coupled to a high voltage signal source and a drain electrode coupled to a load, a body diode associated with the P-channel FET, and a detection circuit. An apparatus has a print head arranged to dispense ink, a print driver circuit electrically coupled to the print head and configured to provide voltage pulses to actuate the ejection ports through an output circuit, and a detection circuit electrically coupled to the output circuit.
摘要翻译： 设备具有布置成接收电压脉冲的输出电路，与输出电路相关联的体二极管，以及电耦合到电压脉冲和输出电路的检测电路，使得当电压脉冲从高转变为低电平时， 检测电路被配置为激活输出电路以减少体二极管中的电流。 用于控制集成电路中的寄生功率耗散的电路具有P沟道FET，其具有耦合到高电压信号源的源极和耦合到负载的漏电极，与P沟道FET相关联的体二极管，以及 检测电路。 一种设备具有布置成分配墨水的打印头，电连接到打印头并被配置为提供电压脉冲以通过输出电路致动喷射口的打印驱动器电路，以及电耦合到输出电路的检测电路。
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6.发明授权System and method for protecting a printer from an over-temperature condition in a printhead 有权用于保护打印机免受打印头中的过热状况的系统和方法公开(公告)号：US08109591B2
公开(公告)日：2012-02-07
申请号：US12358923
申请日：2009-01-23
申请人： Christian Carl Gadke , David L. Knierim , Lee M. Oien , Nathaniel Morrison , Aaron Boyce , Bruce Baur
发明人： Christian Carl Gadke , David L. Knierim , Lee M. Oien , Nathaniel Morrison , Aaron Boyce , Bruce Baur
IPC分类号： B41J29/38
CPC分类号： B41J2/17593
摘要： A method responds to an over-temperature condition in a printhead. The method includes generating a first electrical signal corresponding to a temperature in a printhead, monitoring the first electrical signal with a first electronic circuit to terminate delivery of electrical power to a printhead in response to detection of a safety event, and monitoring the first electrical signal with a second electronic circuit to regulate an amount of electrical power delivered to the printhead.
摘要翻译： 一种方法响应于打印头中的过温状态。 该方法包括产生对应于打印头中的温度的第一电信号，利用第一电子电路监测第一电信号，以响应于安全事件的检测而终止向打印头传送电力，以及监视第一电信号 具有第二电子电路以调节传送到打印头的电力的量。
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公开(公告)号：US20100277557A1
公开(公告)日：2010-11-04
申请号：US12834606
申请日：2010-07-12
申请人： Richard G. Chambers , Brent R. Jones , David L. Knierim , Barry D. Reeves , Edward F. Burress , Ernest I. Esplin , Jasper Wong
发明人： Richard G. Chambers , Brent R. Jones , David L. Knierim , Barry D. Reeves , Edward F. Burress , Ernest I. Esplin , Jasper Wong
IPC分类号： B41J2/175
CPC分类号： B41J2/17593
摘要： A method facilitates insertion of a segmented ink stick into an ink feed system of a phase change ink jet printer. The method includes bending of a flexible strand between ink stick segments during insertion of the ink stick segments and then straightening the flexible strand to orient the ink stick segments in the ink feed system.
摘要翻译： 一种方法便于将分段的墨水棒插入相变式喷墨打印机的墨水供给系统中。 该方法包括在插入墨棒段期间在墨棒段之间弯曲柔性线，然后矫直柔性线以使墨棒段在墨水供给系统中定向。
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公开(公告)号：US20090321520A1
公开(公告)日：2009-12-31
申请号：US12145877
申请日：2008-06-25
IPC分类号： G06K7/10
CPC分类号： G01D5/3473 , G01D5/24409 , G01D5/34746 , G01D5/366
摘要： An encoder home position sensing system and method is disclosed, which includes the use of an analog quadrature encoder reader and either a code wheel or a code strip. The code wheel possesses an optical track comprised of annular ring patterns, the thickness of which can be modulated by a sinusoidal function about the code wheel circumference, with one cycle of a sine wave corresponding to one encoder cycle. In one region of the optical track the amplitude of the sine function is changed to imbed an absolute reference home position. This region of the optical track can be sensed and used to determine an absolute system position. The linear code strip is similarly constructed with lines along the direction of motion, the thickness of which are modulated with a sine function, with one cycle of the sine wave corresponding to one encoder cycle, and the amplitude of the sine wave function changed to imbed an absolute reference home position in the optical track.
摘要翻译： 公开了一种编码器原位感测系统和方法，其包括使用模拟正交编码器读取器和码轮或代码条。 码盘具有由环形环图形组成的光学轨迹，其环形环的厚度可通过关于码盘圆周的正弦函数进行调制，正弦波的一个周期对应于一个编码器周期。 在光学轨迹的一个区域中，正弦函数的幅度被改变以嵌入绝对参考初始位置。 光轨的该区域可被感测并用于确定绝对系统位置。 线性码条类似地沿着运动方向的线构成，其厚度用正弦函数调制，正弦波的一个周期对应于一个编码器周期，正弦波函数的幅度变为嵌入 光轨中的绝对参考原位。
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9.发明授权Faster warm-up, lower energy, and quieter modes for solid ink printers 有权固体墨水打印机更快速的预热，更低的能量和更安静的模式公开(公告)号：US07543901B2
公开(公告)日：2009-06-09
申请号：US11270214
申请日：2005-11-08
申请人： Trevor J. Snyder , Amy R. Bartlett , Bo Wu , Randall R. Bridgeman , Andrew W. Hill , Jennifer Miyamoto , Jule W. Thomas, Jr. , Donald R. Titterington , Steven V. Korol , David L. Knierim
发明人： Trevor J. Snyder , Amy R. Bartlett , Bo Wu , Randall R. Bridgeman , Andrew W. Hill , Jennifer Miyamoto , Jule W. Thomas, Jr. , Donald R. Titterington , Steven V. Korol , David L. Knierim
IPC分类号： B41J29/38
CPC分类号： B41J2/17593 , B41J2/0057
摘要： A method of operating a printer turns off a support structure heater when the printer enters standby mode. The print head is then moved away from an intermediate transfer surface supported by a support structure. Heat settings used to heat a print head are then varied to heat the print head and the support structure. Another method of operating a printer turns off a support structure heater when the printer enters standby mode and holds a print head adjacent to an intermediate transfer surface while the printer is in standby mode.
摘要翻译： 当打印机进入待机模式时，操作打印机的方法会关闭支撑结构加热器。 然后打印头从支撑结构支撑的中间转印表面移开。 然后改变用于加热打印头的热设置以加热打印头和支撑结构。 当打印机处于待机模式时，当打印机进入待机模式并将打印头保持在中间传送表面附近时，操作打印机的另一种方法会关闭支撑结构加热器。
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公开(公告)号：US07405393B2
公开(公告)日：2008-07-29
申请号：US11154047
申请日：2005-06-15
IPC分类号： G01D5/34
CPC分类号： G01D5/2457 , B41J19/202
摘要： An optical encoder that includes an optical grating and a quadrature optical encoder sensor that move relative to each other. The optical grating includes a first encoder bar and a plurality of second encoder bars, wherein the first encoder bar is optically configured to change an amplitude of an output of the quadrature optical encoder sensor.
摘要翻译： 一种光学编码器，包括相对于彼此移动的光栅和正交光学编码器传感器。 光栅包括第一编码器条和多个第二编码器条，其中第一编码器条被光学配置为改变正交光学编码器传感器的输出的幅度。
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