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    • 3. 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。
    • 7. 发明授权
    • Large monolithic thermal ink jet printhead
    • 大型单片热喷墨打印头
    • US4899181A
    • 1990-02-06
    • US303620
    • 1989-01-30
    • William G. HawkinsDonald J. Drake
    • William G. HawkinsDonald J. Drake
    • B41J2/05B41J2/16
    • B41J2/1642B41J2/1604B41J2/1623B41J2/1628B41J2/1629B41J2/1631B41J2/1632B41J2/1635
    • An improved thermal ink jet printhead and method of fabrication thereof is disclosed of the type formed by the mating and bonding of first and second substrates. The first substrate is silicon with {100} crystal plane surfaces and has anisotropically etched in one surface thereof a linear series of separate through recesses and a plurality of parallel, elongated ink channels grooves. The second substrate has a plurality of heating elements and addressing electrodes patterned on one surface thereof. The through recesses serve as a segmented ink reservoir with each segment having an ink inlet, and the elongated ink channel grooves having one end adjacent the segmented reservoir and the opposite end open to serve as ink droplet emitting nozzles. Each segment of the segmented reservoir is isolated from each other by dividing walls. The dividing walls strengthen the printhead, and the separate through recesses reduce the effects of angular misalignment between mask and first substrate crystal planes. In the preferred embodiment, a thick film insulative layer is sandwiched between the first and second substrates and patterned to form recesses therein to provide the means for placing the segmented reservoir into communication with the ink channel grooves. To produce a multicolor printing printhead, the thick film layer is patterned to form a linear series of recesses, each substantially equal in length to an associated one of the reservoir segments, so that each reservoir segment may have a different colored ink supplied thereto that cannot mix with the ink of the other reservoir segments.
    • 公开了一种改进的热喷墨打印头及其制造方法,其通过第一和第二基板的配合和结合而形成。 第一衬底是具有{100}晶面表面的硅,并且在其一个表面中具有各向异性蚀刻线性系列的分离的通孔和多个平行的细长的墨水槽。 第二基板具有在其一个表面上图案化的多个加热元件和寻址电极。 贯通凹部用作分段墨水储存器,每个分段具有墨水入口,并且细长的墨水通道凹槽具有与分段的储存器相邻的一端,并且相对的端部打开以用作墨滴喷射。 分段储存器的每个段通过分隔壁彼此隔离。 分隔壁加强了打印头,并且单独的通孔减少了掩模和第一基板晶体平面之间的角度偏移的影响。 在优选实施例中,厚膜绝缘层被夹在第一和第二基板之间并被图案化以在其中形成凹槽,以提供用于将分段的储存器放置成与墨水通道槽连通的装置。 为了生产多色打印打印头,将厚膜层图案化以形成线性系列的凹槽,每个凹槽的长度与相关联的储存器段之间的长度基本上相等,使得每个储存器段可以具有供给其的不同颜色的墨水,不能 与其他水库段的油墨混合。
    • 10. 发明授权
    • Ink jet printhead
    • 喷墨打印头
    • US4774530A
    • 1988-09-27
    • US115271
    • 1987-11-02
    • William G. Hawkins
    • William G. Hawkins
    • B41J2/05B41J2/14B41J2/16G01D15/16
    • B41J2/1404B41J2002/14379
    • An improved ink jet printhead is disclosed which comprises an upper and a lower substrate that are mated and bonded together with a thick insulative layer sandwiched therebetween. One surface of the upper substrate has etched therein one or more grooves and a recess which, when mated with the lower substrate, will serve as capillary-filled ink channels and ink supplying manifold respectively. The grooves are open at one end and closed at other end. The open ends will serve as the nozzles. The manifold recess is adjacent the groove closed ends. Each channel has a heating element located upstream of the nozzle. The heating elements are selectively addressable by input signals representing digitized data signals to produce ink vapor bubbles. The growth and collapse of the bubbles expel ink droplets from the nozzles and propel them to a recording medium. Recesses patterned in the thick layer expose the heating elements to the ink, thus placing them in a pit, and provide a flow path for the ink from the manifold to the channels by enabling the ink to flow around the closed ends of the channels, thereby eliminating the fabrication steps required to open the groove closed ends to the manifold recess, so that the printed fabrication process is simplified.
    • 公开了一种改进的喷墨打印头,其包括上和下基板,其被夹在其间的厚的绝缘层配合并结合在一起。 上基板的一个表面在其中蚀刻有一个或多个槽和凹槽,当与下基板配合时,凹槽将分别用作毛细管填充的墨通道和供墨歧管。 槽在一端敞开,另一端封闭。 开口端将作为喷嘴。 歧管凹槽与槽封闭端相邻。 每个通道具有位于喷嘴上游的加热元件。 加热元件可以通过表示数字化数据信号的输入信号来选择寻址,以产生油墨蒸气泡。 气泡的生长和坍塌从喷嘴中排出墨滴并推动它们到记录介质上。 图案化在厚层中的凹陷将加热元件暴露于墨水,从而将它们放置在凹坑中,并且通过使墨水能够围绕通道的封闭端流动从而提供从歧管到通道的墨水的流动路径,由此 消除了将凹槽闭合端部打开到歧管凹槽所需的制造步骤,使得印刷的制造工艺简化。