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公开(公告)号：US06565176B2
公开(公告)日：2003-05-20
申请号：US09865881
申请日：2001-05-25
申请人： Frank Edward Anderson , Thomas Austin Fields , Paul William Graf , Yimin Guan , George Keith Parish , Kent Lee Ubellacker
发明人： Frank Edward Anderson , Thomas Austin Fields , Paul William Graf , Yimin Guan , George Keith Parish , Kent Lee Ubellacker
IPC分类号： B41J2938
CPC分类号： B41J2/04506 , B41J2/04536 , B41J2/0458 , B41J2/04591
摘要： A thermal ink jet printing apparatus maintains stable printing output as certain characteristics of the apparatus change over its operational lifetime. The apparatus includes an ink jet print head with resistive heating elements for receiving electrical energy pulses having a voltage level and for transferring heat energy pulses having a desired energy level into adjacent ink based on the electrical energy pulses. The print head includes nozzles associated with the resistive heating elements through which droplets of the ink are ejected when the heat energy pulses are transferred into the ink. The apparatus further includes a printer controller in electrical communication with the print head. The printer controller determines a pulse count indicative of a number of electrical energy pulses, applies the electrical energy pulses having a first pulse width to the resistive heating elements when the pulse count is less than a threshold value, and applies the electrical energy pulses having an adjusted pulse width to the resistive heating elements when the pulse count exceeds the threshold value. The difference in the first and the adjusted pulse widths compensates for changes in the electrical resistance of the resistive heating elements over time.
摘要翻译： 热喷墨打印设备保持稳定的打印输出，因为设备的某些特性在其使用寿命内改变。 该装置包括具有电阻加热元件的喷墨打印头，用于接收具有电压电平的电能脉冲，并且用于基于电能脉冲将具有期望能级的热能脉冲传送到相邻墨中。 打印头包括与电阻加热元件相关联的喷嘴，当热能脉冲被转移到油墨中时，通过该喷嘴喷射墨滴。 该装置还包括与打印头电连通的打印机控制器。 打印机控制器确定指示电能脉冲数的脉冲计数，当脉冲数小于阈值时，将具有第一脉冲宽度的电能脉冲施加到电阻加热元件，并施加具有 当脉冲计数超过阈值时，调整脉冲宽度到电阻加热元件。 第一和调整后的脉冲宽度的差异补偿电阻加热元件的电阻随时间的变化。
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公开(公告)号：US07633256B2
公开(公告)日：2009-12-15
申请号：US11121576
申请日：2005-05-04
IPC分类号： G05B19/29
CPC分类号： G02B26/122 , G05B19/404 , G05B2219/37151 , G05B2219/37515
摘要： Correction of rotary encoder eccentricity in an image forming device having a motor controller using period and position pulse train feedback signals. A motor includes an encoder disc rotating with the motor and at least two encoder sensors disposed at different circumferential positions about the encoder disc. A controller may use a high speed clock to calculate a corrected speed count based on speed counts determined from the number of clock cycles that elapse per cycle of pulse trains from the encoders. The controller may also calculate a corrected position count based at least partly on one or more position counts determined from the number of clock cycles that elapse between periodic sampling points and transitions of encoder pulse trains. The corrected position count may also be calculated based on a position count and one or more speed counts.
摘要翻译： 在具有使用周期和位置脉冲串反馈信号的电机控制器的图像形成装置中校正旋转编码器偏心度。 电动机包括与电动机一起旋转的编码器盘和设置在围绕编码器盘的不同圆周位置处的至少两个编码器传感器。 控制器可以使用高速时钟来计算校正的速度计数，该速度计数基于从编码器每个脉冲串周期经过的时钟周期数确定的速度计数。 控制器还可以至少部分地基于从周期性采样点和编码器脉冲序列的转换之间经过的时钟周期数确定的一个或多个位置计数来计算校正的位置计数。 还可以基于位置计数和一个或多个速度计数来计算校正位置计数。
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公开(公告)号：US07205738B2
公开(公告)日：2007-04-17
申请号：US10808101
申请日：2004-03-24
CPC分类号： H02P6/14
摘要： A motor control circuit uses a stored commutation table to effect time-based commutation of a brushless dc motor. Each entry in the commutation table defines a motor winding commutation state, and an exemplary method of open-loop motor control based on the commutation table comprises commutating the motor based on sequentially selecting table entries at a desired selection rate. That is, motor speed is controlled precisely by controlling the sequential selection rate rather than by relying on feedback from the motor. However, motor feedback for closed-loop control may be used in some modes of operation. For example, the method may include closed-loop control or open-loop control depending on the motor speed range, and may transition from closed-loop to open-loop control.
摘要翻译： 电动机控制电路使用存储的换向表来实现无刷直流电动机的基于时间的换向。 换向表中的每个条目定义了电动机绕组换向状态，并且基于换向表的开环电动机控制的示例性方法包括基于以期望的选择速率顺序地选择表格条目来对电动机进行换向。 也就是说，通过控制顺序选择速度而不是依靠来自电动机的反馈来精确地控制电动机速度。 然而，用于闭环控制的电动机反馈可以在某些操作模式中使用。 例如，该方法可以包括根据电动机速度范围的闭环控制或开环控制，并且可以从闭环转到开环控制。
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公开(公告)号：US20090185197A1
公开(公告)日：2009-07-23
申请号：US12017554
申请日：2008-01-22
IPC分类号： G06F3/12
摘要： The present application is directed to methods and devices for controlling a motor in an image forming device by sensing the amount of current applied to the motor. One embodiment includes a power supply operatively connected to a controller. The power supply provides an electrical current to a motor, and the amount of current is measured. The controller monitors the amount of current and determines an operating condition of the motor based on the current. The controller may then continue to allow the power supply to provide the electrical current to the motor, or may shut off the current based on the operating condition. The controller may also monitor a timer to determine how long the power supply has provided current to the motor. In one embodiment, the controller may use both the signal and monitored time to determine the operating condition of the motor.
摘要翻译： 本申请涉及通过感测施加到电动机的电流量来控制图像形成装置中的电动机的方法和装置。 一个实施例包括可操作地连接到控制器的电源。 电源为电机提供电流，并测量电流量。 控制器监视电流量，并根据电流确定电动机的运行状态。 然后，控制器可以继续允许电源向电动机提供电流，或者可以基于操作条件来切断电流。 控制器还可以监视定时器以确定电源向电动机提供电流多长时间。 在一个实施例中，控制器可以同时使用信号和监视时间来确定电机的工作状态。
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公开(公告)号：US20100072938A1
公开(公告)日：2010-03-25
申请号：US12627790
申请日：2009-11-30
CPC分类号： G02B26/122 , G05B19/404 , G05B2219/37151 , G05B2219/37515
摘要： Correction of rotary encoder eccentricity in an image forming device having a motor controller using period and position pulse train feedback signals. A motor includes an encoder disc rotating with the motor and at least two encoder sensors disposed at different circumferential positions about the encoder disc. A controller may use a high speed clock to calculate a corrected speed count based on speed counts determined from the number of clock cycles that elapse per cycle of pulse trains from the encoders. The controller may also calculate a corrected position count based at least partly on one or more position counts determined from the number of clock cycles that elapse between periodic sampling points and transitions of encoder pulse trains. The corrected position count may also be calculated based on a position count and one or more speed counts.
摘要翻译： 在具有使用周期和位置脉冲串反馈信号的电机控制器的图像形成装置中校正旋转编码器偏心度。 电动机包括与电动机一起旋转的编码器盘和设置在围绕编码器盘的不同圆周位置处的至少两个编码器传感器。 控制器可以使用高速时钟来计算校正的速度计数，该速度计数基于从编码器每个脉冲串周期经过的时钟周期数确定的速度计数。 控制器还可以至少部分地基于从周期性采样点和编码器脉冲序列的转换之间经过的时钟周期数确定的一个或多个位置计数来计算校正的位置计数。 还可以基于位置计数和一个或多个速度计数来计算校正位置计数。
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6.发明授权Transmission error detection system and method for imaging systems including printers with intelligent options 失效包括具有智能选项的打印机的成像系统的传输错误检测系统和方法
公开(公告)号：US06028675A
公开(公告)日：2000-02-22
申请号：US969240
申请日：1997-11-13
CPC分类号： G06K15/00
摘要： A print system includes a printer having a printer controller. One or more optional support devices are associated with the printer, wherein each optional support device includes a device controller. The system further includes a bi-directional serial communications path, including one or more trunklines, which provides serial electrical interconnection between the printer controller and each device controller of each optional support device of the system. The printer controller automatically assigns a unique device address to each optional support device. Transmission error detection system and method are provided at the printer controller and/or each optional support device.
摘要翻译： 打印系统包括具有打印机控制器的打印机。 一个或多个可选的支持设备与打印机相关联，其中每个可选支持设备包括设备控制器。 该系统还包括双向串行通信路径，其包括一个或多个中继线，其提供打印机控制器与系统的每个可选支持装置的每个设备控制器之间的串行电互连。 打印机控制器自动为每个可选支持设备分配唯一的设备地址。 在打印机控制器和/或每个可选支持装置处提供传输错误检测系统和方法。
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7.发明授权Method and apparatus for non-volatile memory usage in an ink jet printer 有权用于喷墨打印机中的非易失性存储器使用的方法和装置公开(公告)号：US06773083B2
公开(公告)日：2004-08-10
申请号：US09942358
申请日：2001-08-29
IPC分类号： B41J2938
CPC分类号： B41J2/17546 , B41J2/14 , B41J2202/17
摘要： A method of storing usage information in an ink jet printer includes storing low priority usage information in a first memory field. First high priority usage information is stored in a second memory field. Second high priority usage information is stored in a third memory field. The second high priority usage information is substantially identical to the first high priority usage information.
摘要翻译： 一种在喷墨打印机中存储使用信息的方法包括：在第一存储区中存储低优先权使用信息。 第一高优先级使用信息被存储在第二存储器字段中。 第二高优先级使用信息被存储在第三存储器字段中。 第二高优先级使用信息基本上与第一高优先级使用信息相同。
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