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    • 16. 发明授权
    • Ink level sensing system for an ink jet printer
    • 用于喷墨打印机的墨水量检测系统
    • US5731824A
    • 1998-03-24
    • US574090
    • 1995-12-18
    • Gary A. KneezelJoseph F. StephanyWilliam R. Burger
    • Gary A. KneezelJoseph F. StephanyWilliam R. Burger
    • B41J2/125B41J2/175G01F23/24G01G17/04B41J2/195
    • B41J2/17513B41J2/17566G01G17/06
    • The invention discloses a system and method for sensing changes in the weight of an ink reservoir which supplies ink to a printhead which ejects ink onto a recording medium during a printer operational mode. The ink reservoir, whether located separately from the printhead, as in a plotter or pagewidth printer embodiment, or mechanically attached to the printhead and moved in a scanning printhead architecture, has its weight supported by a structure. A strain gage or other weight sensor is affixed to the supporting structure and incorporated in a circuit which produces an output signal representative of resistive changes in the weight sensor. Since a resistive change in the weight sensor is caused by a decrease in the supply of ink in the reservoir during continued printer operation, the output signal is proportional to the ink level. The output signal is digitized and sent to a system controller where it is compared to a predetermined reference level and a low level output signal is generated for use as a warning to a operator or user. In one embodiment, the strain gage is a leg of a resistor in a bridge circuit and provides continuous ink level readout. In another embodiment, multiple warning levels are enabled by inserting the resistor in a circuit where comparators compare the resistance of the strain gage to reference resistance levels.
    • 本发明公开了一种用于感测墨水储存器的重量变化的系统和方法,该墨水储存器向在打印机操作模式期间将墨水喷射到记录介质上的打印头提供墨水。 油墨储存器,无论是与打印头分开设置,如在绘图机或页宽打印机实施例中,或机械地附接到打印头并以扫描打印头架构移动,其重量由结构支撑。 应变计或其他重量传感器固定到支撑结构上并且包括在产生表示重量传感器中的电阻变化的输出信号的电路中。 由于重量传感器中的电阻变化是由连续打印机操作期间储存器中墨水供应的减少引起的,所以输出信号与油墨水平成正比。 输出信号被数字化并发送到系统控制器,在那里将其与预定参考电平进行比较,生成低电平输出信号以用作对操作者或用户的警告。 在一个实施例中,应变片是桥接电路中的电阻器的腿,并且提供连续的墨水量读出。 在另一个实施例中,通过将电阻器插入电路中来实现多个警告电平,其中比较器将应变计的电阻与参考电阻电平进行比较。
    • 17. 发明授权
    • System for sensing ink level and type of ink for an ink jet printer
    • 用于感测喷墨打印机的油墨水平和油墨类型的系统
    • US5682184A
    • 1997-10-28
    • US574089
    • 1995-12-18
    • Joseph F. StephanyGary A. KneezelJohn H. Slowik
    • Joseph F. StephanyGary A. KneezelJohn H. Slowik
    • B41J2/125B41J2/175G01F23/26B41J2/195G01F23/00
    • G01F23/268B41J2/17566G01F23/266
    • A capacitor is created in an ink tank supplying ink to an ink jet printhead by placing parallel capacitive plates on sides of the tank with the ink therebetween acting as the capacitor dielectric. An electrical AC potential is applied across the capacitor. Changes in current flow through the plates are detected in a phase sensitive bridge circuit and digital signals are generated and sent to a processor for conversion into low ink level signals. The output signal is also used to identify a particular type of ink by either comparing points on a characteristic curve of the ink volume verses capacitance or, in a second embodiment, by periodically sweeping an applied oscillator voltage over a selected frequency range and comparing measured electrical resonance parameters for the ink tank capacitor with stored information about resonance parameters for different types of ink.
    • 在墨罐中产生电容器,通过在墨水两侧放置平行的电容板,墨水在其间用作电容器电介质,从而向喷墨打印头供墨。 在电容器两端施加电气电位。 在相敏电桥电路中检测到电流流过板的变化,并产生数字信号并将其发送到处理器以转换为低油位信号。 输出信号还用于通过比较油墨体积与电容的特性曲线上的点来识别特定类型的墨水,或者在第二实施例中,通过周期性地扫描所选频率范围上施加的振荡器电压,并比较测量的电 具有储存的关于不同类型墨水的共振参数的信息的墨槽电容器的共振参数。
    • 18. 发明授权
    • Method of printing with multiple sized drop ejectors on a single printhead
    • 在单个打印头上使用多种尺寸的喷墨打印机打印方法
    • US06406115B2
    • 2002-06-18
    • US09232461
    • 1999-01-19
    • David Allen MantellGary A. KneezelJames F. O'NeillThomas A. Tellier
    • David Allen MantellGary A. KneezelJames F. O'NeillThomas A. Tellier
    • B41J2205
    • B41J2/5056B41J2/2125
    • A printhead uses large and small drop ejectors to achieve efficient gray scale printing. The printhead is arranged with a close packed configuration of alternating large and small nozzles positioned to maximize coverage while minimizing the volume of ejected ink. The printhead may be operated in a single pass mode or dual pass mode. In the single pass mode, complete coverage is effected by rippling through the odd numbered jets first and then rippling through the even numbered jets. The position of the small spots from the even numbered jets can be adjusted to maximize coverage and counteract offset between nozzle centers. Printheads with different size nozzles can also be operated by a staggered firing method using dual passes to offset spots in the scan direction by shifting the printhead between passes or alternating between groups of large and small nozzles. Further improvements to image quality can be realized by shifting the spots in the direction perpendicular to the scanning direction by tilting the printhead or offsetting the nozzles with respect to the ink channels on the printhead.
    • 打印头使用大而小的墨滴喷射器来实现高效的灰度打印。 打印头布置成具有交替的大和小喷嘴的紧密堆积构造,其被定位成最大化覆盖范围,同时最小化喷射墨的体积。 打印头可以在单程模式或双通道模式下操作。 在单程模式中,完全覆盖通过首先通过奇数射流波纹,然后通过偶数喷射波纹来实现。 可以调整来自偶数喷嘴的小点的位置,以最大化覆盖范围并抵消喷嘴中心之间的偏移。 具有不同尺寸喷嘴的打印头也可以通过交错的点火方法来操作,使用双程通过在扫描方向上偏移打印头,使打印头在通过之间移动或在大喷嘴和小喷嘴组之间交替。 通过倾斜打印头或相对于打印头上的墨水通道偏移喷嘴,可以通过使垂直于扫描方向的方向上的点移动来实现对图像质量的进一步改进。
    • 19. 发明授权
    • Thermal ink jet heater design
    • 热喷墨加热器设计
    • US06315398B1
    • 2001-11-13
    • US07963969
    • 1992-10-21
    • Cathie J. BurkeNarayan V. DesphandeWilliam G. HawkinsDale R. ImsMichael P. O'HoroGary A. KneezelThomas A. TellierIvan Rezanka
    • Cathie J. BurkeNarayan V. DesphandeWilliam G. HawkinsDale R. ImsMichael P. O'HoroGary A. KneezelThomas A. TellierIvan Rezanka
    • B41J205
    • B41J2/1604B41J2/14129B41J2/1628B41J2/1629B41J2/1631B41J2/1642B41J2/1646
    • The new heater element design has a pit layer which protects the overglaze passivation layer, PSG step region, portions of the Ta layer and dielectric isolation layer and junctions or regions susceptible to the cavitational pressures. Further, the inner walls of the pit layer define the effective heater area and the dopant lines define the actual heater area. In alternative embodiments, the dopant lines define the actual and effective heater areas, and an inner wall and a dopant line define the actual and effective heater areas. Further, when the new heater element designs are incorporated into printheads having full pit channel geometry and open pit channel geometry, the operating lifetime of the printhead is extended because the added protection of the pit layer prevents: 1) passivation damage and cavitational damages of the heater elements; and 2) degradation of heater robustness, hot spot formations and heater failures well into the 109 pulse range. The printhead incorporating the new heater element design can be incorporated into drop-on-demand printing systems of a carriage type or a full width type.
    • 新的加热器元件设计具有凹坑层,其保护釉面钝化层,PSG阶梯区域,Ta层和电介质隔离层的部分以及对空穴压力敏感的结或区域。 此外,凹坑层的内壁限定有效的加热器面积,并且掺杂剂线限定实际的加热器面积。 在替代实施例中,掺杂剂线限定实际和有效的加热器区域,并且内壁和掺杂剂线限定实际和有效的加热器区域。 此外,当新的加热器元件设计结合到具有全坑通道几何形状和露天通道几何形状的打印头中时,打印头的工作寿命延长,因为凹坑层的附加保护防止:1)钝化损伤和空穴损伤 加热元件; 和2)加热器鲁棒性,热点形成和加热器故障的恶化达到109脉冲范围。 包含新的加热器元件设计的打印头可以结合到托架型或全宽型的按需按需打印系统中。
    • 20. 发明授权
    • Printhead with close-packed configuration of alternating sized drop ejectors and method of firing such drop ejectors
    • 具有交替大小的滴液喷射器的紧密配置的打印头和点燃这种喷射器的方法
    • US06402280B2
    • 2002-06-11
    • US09233110
    • 1999-01-19
    • Gary A. KneezelDavid Allen MantellJames F. O'NeillThomas A. TellierSteven J. Harrington
    • Gary A. KneezelDavid Allen MantellJames F. O'NeillThomas A. TellierSteven J. Harrington
    • B41J2205
    • B41J2/2125
    • A printhead uses large and small drop ejectors to achieve efficient gray scale printing. The printhead is arranged with a close packed configuration of alternating large and small nozzles positioned to maximize coverage while minimizing the volume of ejected ink. The printhead may be operated in a single pass mode or dual pass mode. In the single pass mode, complete coverage is effected by rippling through the odd numbered jets first and then rippling through the even numbered jets. The position of the small spots from the even numbered jets can be adjusted to maximize coverage and counteract offset between nozzle centers. Printheads with different size nozzles can also be operated by a staggered firing method using dual passes to offset spots in the scan direction by shifting the printhead between passes or alternating between groups of large and small nozzles. Further improvements to image quality can be realized by shifting the spots in the direction perpendicular to the scanning direction by tilting the printhead or offsetting the nozzles with respect to the ink channels on the printhead.
    • 打印头使用大而小的墨滴喷射器来实现高效的灰度打印。 打印头布置成具有交替的大和小喷嘴的紧密堆积构造,其被定位成最大化覆盖范围,同时最小化喷射墨的体积。 打印头可以在单程模式或双通道模式下操作。 在单程模式中,完全覆盖通过首先通过奇数射流波纹,然后通过偶数喷射波纹来实现。 可以调整来自偶数喷嘴的小点的位置,以最大化覆盖范围并抵消喷嘴中心之间的偏移。 具有不同尺寸喷嘴的打印头也可以通过交错的点火方法来操作,使用双程通过在扫描方向上偏移打印头,使打印头在通过之间移动或在大喷嘴和小喷嘴组之间交替。 通过倾斜打印头或相对于打印头上的墨水通道偏移喷嘴,可以通过使垂直于扫描方向的方向上的点移动来实现对图像质量的进一步改进。