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    • 2. 发明授权
    • System for sensing the temperature of a printhead in an ink jet printer
    • 用于感测喷墨打印机中的打印头的温度的系统
    • US5745130A
    • 1998-04-28
    • US570024
    • 1995-12-11
    • Juan J. BecerraChristopher R. MortonThomas A. Tellier
    • Juan J. BecerraChristopher R. MortonThomas A. Tellier
    • B41J2/05B41J2/125G01K7/24
    • B41J2/04541B41J2/04563B41J2/0458B41J2/0459B41J2/04591G01K7/245
    • The invention describes a temperature sensing system which provides a digital signal representative of the temperature of an ink jet printhead during a predetermined time period. In one embodiment, a temperature controlled oscillator is formed on the printhead, the oscillator including a resistor whose resistance varies proportional to printhead temperature variations. An analog signal from the resistor representative of printhead temperature is converted by the oscillator into a digital output signal whose frequency varies with variations in the resistor and, therefore, with the printhead temperature. The oscillator outputs are counted in an electrical counter over a sampling period. The accumulated count is converted into a digital code representing the printhead temperature. This byte is available for comparison with predetermined values stored in a look-up table and is converted into electrical image signals sent to the printhead which are adjusted and compensate for changes in the volume of ink ejected by the printhead nozzles. In a preferred embodiment, the oscillator counter and synchronizing circuitry are formed on one chip located on the printhead. The printhead can be either a single partial width printhead located on a carriage which is moved through a print zone or a full width printhead. The temperature sensing circuit has a high signal to noise ratio resulting in a more accurate temperature measurement. Because of the noise immunity, the sensing can take place during a print operation.
    • 本发明描述了一种在预定时间段内提供代表喷墨打印头的温度的数字信号的温度感测系统。 在一个实施例中,在打印头上形成温度控制的振荡器,该振荡器包括电阻器,其电阻与打印头温度变化成比例。 来自表示打印头温度的电阻的模拟信号由振荡器转换成数字输出信号,其频率随电阻器的变化而变化,因此随着打印头温度而变化。 振荡器输出在采样周期内在电气计数器中计数。 累计计数被转换成代表打印头温度的数字代码。 该字节可用于与存储在查找表中的预定值进行比较,并将其转换为发送到打印头的电子图像信号,该图像信号被调整并补偿由打印头喷嘴喷射的墨水量的变化。 在优选实施例中,振荡器计数器和同步电路形成在位于打印头上的一个芯片上。 打印头可以是位于滑架上的单个部分宽度打印头,该打印头移动通过打印区域或全宽度打印头。 温度检测电路具有较高的信噪比,从而得到更准确的温度测量。 由于具有抗噪声能力,因此可以在打印操作期间进行感测。
    • 5. 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。
    • 6. 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。
    • 9. 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。