公开(公告)号：US4831390A

公开(公告)日：1989-05-16

申请号：US144213

申请日：1988-01-15

Applicant: Narayan V. Deshpande ,  Dale R. Ims ,  Herman A. Hermanson ,  Gary A. Kneezel ,  Roger G. Markham

Inventor： Narayan V. Deshpande ,  Dale R. Ims ,  Herman A. Hermanson ,  Gary A. Kneezel ,  Roger G. Markham

IPC: B41J2/05 ,  B41J2/14

CPC classification number: B41J2/1408

Abstract: A bubble jet printing device is optimized for extended operation by preventing heat buildup within the printhead and ink supply. Several configurations provides for the addition of heat sinks of appropriate dimensions either directly to the printhead or to an electrode board bonded to the printhead. Plated holes through the electrode board increase heat flow away from the printhead. According to another aspect of the invention, the ink supply cartridge has thermally conductive particles dispersed therethrough to effectively increase its capacity to radiate heat away from the printhead.

Abstract translation: 气泡喷墨打印装置通过防止打印头和墨水供应中的积聚而优化用于扩展操作。 几种配置提供了将适当尺寸的散热器直接添加到打印头或结合到打印头的电极板。 穿过电极板的电镀孔增加了远离打印头的热流。 根据本发明的另一方面，供墨盒具有分散在其中的导热颗粒，以有效地增加其从打印头辐射热量的能力。

公开(公告)号：US4638337A

公开(公告)日：1987-01-20

申请号：US761922

申请日：1985-08-02

Applicant: Peter A. Torpey ,  Roger G. Markham

Inventor： Peter A. Torpey ,  Roger G. Markham

IPC: B41J2/05 ,  B41J2/015 ,  B41J2/14 ,  B41J2/16 ,  G01D15/18

CPC classification number: B41J2/1629 ,  B41J2/14129 ,  B41J2/1604 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1635 ,  B41J2/1642

Abstract: An improved thermal ink jet printhead is disclosed for ejecting and propelling ink droplets on demand along a flight path toward a recording medium spaced therefrom in response to receipt of electrical input signals representing digitized data signals. Each printhead has one or more capillary filled ink channels. The channels have a droplet emitting nozzle on one end and connect to an ink supplying manifold on the other end. Each channel has a heating element upstream from the nozzle that is located in a recess. The heating elements are selectively addressable with a current pulse for substantially instantaneous vaporization of the ink contacting the addressed heating element to produce a bubble that expels a droplet of ink during its growth and collapse. The recess walls containing the heating elements prevent the lateral movement of the bubbles through the nozzle and therefore the sudden release of vaporized ink to the atmosphere, known as blowout which causes ingestion of air and interrupts the printhead operation.

Abstract translation: 公开了一种改进的热喷墨打印头，用于响应于接收到表示数字化数据信号的电输入信号，沿着飞行路径沿着与其隔开的记录介质的飞行路径喷射和推动墨滴。 每个打印头具有一个或多个毛细管填充的墨水通道。 通道在一端具有液滴喷射喷嘴，并在另一端连接到供墨歧管。 每个通道具有位于凹部中的喷嘴上游的加热元件。 加热元件可选择性地用电流脉冲寻址，用于接触所寻址的加热元件的墨水的基本瞬时蒸发，以产生在其生长和崩溃期间排出墨滴的气泡。 包含加热元件的凹槽防止气泡通过喷嘴的横向运动，并因此将汽化的油墨突然释放到大气中，这被称为引起空气摄取的空气并且中断打印头操作。

公开(公告)号：US4296417A

公开(公告)日：1981-10-20

申请号：US45044

申请日：1979-06-04

Applicant: Roger G. Markham ,  Doyle P. Skinner, Jr.

Inventor： Roger G. Markham ,  Doyle P. Skinner, Jr.

IPC: B41J2/02 ,  B41J2/025 ,  G01D15/18

CPC classification number: B41J2/025 ,  Y10S310/80 ,  Y10S430/165

Abstract: A thin film of polyvinylidene fluoride is operated in the piezoelectric thickness mode to stimulate fluid drop formation for ink jet printing systems. The film is placed against a rigid wall of either rectangular, cylindrical or spherical chambers having at least one nozzle for emitting a continuous stream of fluid from which the drops are formed. The frequency of the drop generation is related to the frequency of an AC voltage applied across the piezoelectric film.

Abstract translation: 聚偏二氟乙烯的薄膜以压电厚度模式运行，以刺激喷墨印刷系统的液滴形成。 膜被放置在矩形，圆柱形或球形腔的刚性壁上，该刚性壁具有至少一个用于发射形成液滴的流体的连续流的喷嘴。 液滴产生的频率与施加在压电膜上的AC电压的频率有关。