公开(公告)号：US4523200A

公开(公告)日：1985-06-11

申请号：US453571

申请日：1982-12-27

Applicant: Stuart D. Howkins

Inventor： Stuart D. Howkins

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/205 ,  G01D15/16

CPC classification number: B41J2/04516 ,  B41J2/04528 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/0459 ,  B41J2/04593 ,  B41J2002/14387

Abstract: An improved method for operating an ink jet device comprises the steps of: First, operating the transducer of the device for initiating the ejection of an ink droplet from an orifice via a first pressure disturbance within the ink chamber associated with the orifice; and thereafter, prior to the ejection of an ink droplet from the orifice, operating the transducer for producing a second pressure disturbance, lower in amplitude than the first pressure disturbance, for increasing stability by causing earlier break-off of the droplet at the orifice relative to the time of break-off without using the second pressure disturbance.

Abstract translation: 用于操作喷墨装置的改进方法包括以下步骤：首先，操作装置的换能器，用于通过与孔口相关联的墨室内的第一压力扰动从孔口开始喷射墨滴; 此后，在从孔口喷射墨滴之前，操作用于产生第二压力扰动的换能器，其振幅低于第一压力扰动，为了通过在孔口相对处引起液滴的较早断裂来增加稳定性 到没有使用第二压力扰动的断裂时间。

公开(公告)号：US4646106A

公开(公告)日：1987-02-24

申请号：US576582

申请日：1984-02-03

Applicant: Stuart D. Howkins

Inventor： Stuart D. Howkins

IPC: B41J2/045 ,  B41J2/055 ,  G01D15/18

CPC classification number: B41J2/04573 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2002/14387

Abstract: An ink jet includes a variable volume chamber with an ink droplet ejecting orifice. The volume of the chamber is varied by a transducer which expands and contracts in a direction having at least a component extending parallel with the axis ink droplet ejection from the orifice. The transducer communicates with a moveable wall of the chamber which has a sufficiently small are a such that the difference in the pressure pulse transit times from each point on the wall to the ink droplet ejection orifice is less than 1 microsecond.

Abstract translation: 喷墨包括具有墨滴喷射孔的可变容积室。 腔室的体积由换能器变化，该换能器在具有至少一个平行于从孔的墨滴滴出的部件延伸的方向上膨胀和收缩。 换能器与腔室的可移动壁连通，其具有足够小的，使得压力脉冲从壁上的每个点到墨滴喷射口的传递时间差小于1微秒。

公开(公告)号：US4973980A

公开(公告)日：1990-11-27

申请号：US332413

申请日：1989-03-30

Applicant: Stuart D. Howkins ,  John A. McCormick

Inventor： Stuart D. Howkins ,  John A. McCormick

IPC: B41J2/165

CPC classification number: B41J2/16526

Abstract: An ink jet apparatus having a scanning head employing at least one ink jet with a variable volume chamber which includes an ink droplet ejecting orifice, and a transducer, having a length mode resonant frequency, adapted to expand and contract along an axis of elongation in response to an electric field substantially transverse to the axis of elongation for ejection of droplets on demand from the ink droplet ejecting orifice is acoustically microstreamed by exciting the transducers during non-printing periods to eliminate start-up problems and to maintain pigments or other particles in dispersion within the ink.

Abstract translation: 一种具有扫描头的喷墨装置，其具有至少一个具有包括墨滴喷射孔的可变容积室的喷墨头和具有长度模式共振频率的换能器，该换能器适于沿着响应的伸长轴伸缩 基于横向于延伸轴线的电场，根据需要从墨滴喷射孔喷射液滴，通过在非打印期间激发换能器来声学地微流，以消除启动问题并将颜料或其它颗粒保持在分散体中 在墨水内。

公开(公告)号：US4697193A

公开(公告)日：1987-09-29

申请号：US842455

申请日：1986-03-21

Applicant: Stuart D. Howkins

Inventor： Stuart D. Howkins

IPC: B41J2/045 ,  G01D15/18

CPC classification number: B41J2/04573 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2002/14387

Abstract: A high performance ink jet is operated in a fill-before-fire mode. The ink jet is characterized by at least one resonant frequency in excess of 10 kHz creating an upper limit for a frequency of stable operation. During operation, the ink jet is characterized by ejecting droplets of substantially equal velocity and/or size for various frequencies in an operating range extending from 0 to a fequency equal to or in excess of 5 kHz.

Abstract translation: 高性能喷墨机在充满燃烧模式下运行。 喷墨的特征在于至少一个超过10kHz的谐振频率，产生稳定操作频率的上限。 在操作期间，喷墨的特征在于在从0延伸到等于或超过5kHz的等级的操作范围内喷射基本相等的速度和/或尺寸的液滴。

公开(公告)号：US06394589B1

公开(公告)日：2002-05-28

申请号：US09451919

申请日：1999-12-01

Applicant: Charles A. Willus ,  Stuart D. Howkins ,  Nobuhiro Noto ,  Yoshitaka Akiyama

Inventor： Charles A. Willus ,  Stuart D. Howkins ,  Nobuhiro Noto ,  Yoshitaka Akiyama

IPC: B41J2045

CPC classification number: B41J2/14274 ,  B41J2/055 ,  B41J2002/14403 ,  B41J2002/14419

Abstract: An ink jet printhead composed of: a reservoir storing a quantity of printing ink, an ink manifold defining an ink supply volume in communication with the reservoir for holding a supply of ink received from the reservoir and a plurality of individually controlled ink jet delivery channels, each of the channels having an ink drop ejection transducer and an orifice to eject successive ink drops on demand in response to pressure pulses produced by the transducer, and each of the channels being in communication with the ink supply volume for receiving ink from the ink supply volume. The manifold is constructed to give the ink supply volume a large acoustic compliance to minimize propagation of pressure disturbances in the ink supply volume and acoustic signal crosstalk between the channels.

Abstract translation: 一种喷墨打印头，包括：储存一定数量的印刷油墨的储存器，限定与储存器连通的供墨容积的油墨歧管，用于保持从储存器接收的油墨供应;以及多个单独控制的喷墨输送通道， 每个通道具有墨滴喷射传感器和孔口，以响应于由换能器产生的压力脉冲来喷射连续的墨滴，并且每个通道与供墨容器连通，用于从墨水供应墨水 卷。 歧管被构造成使墨水供应体积具有大的声学顺应性，以最小化墨水供应体积中的压力扰动的传播和声道之间的声学​​信号串扰。

公开(公告)号：US4459601A

公开(公告)日：1984-07-10

申请号：US336603

申请日：1982-01-04

Applicant: Stuart D. Howkins

Inventor： Stuart D. Howkins

IPC: B41J2/045 ,  B41J2/14 ,  G01D15/18

CPC classification number: B41J2/14201

Abstract: An ink jet includes a variable volume chamber with an ink droplet ejecting orifice. The volume of the chamber is varied by a transducer which expands and contracts in a direction having at least a component extending parallel with the axis ink droplet ejection from the orifice. The transducer communicates with a moveable wall of the chamber which has a sufficiently small area such that the difference in the pressure pulse transit times from each point on the wall to the ink droplet ejection orifice is less than 1 microsecond.

Abstract translation: 喷墨包括具有墨滴喷射孔的可变容积室。 腔室的体积由换能器变化，该换能器在具有至少一个平行于从孔的墨滴滴出的部件延伸的方向上膨胀和收缩。 换能器与室的可移动壁连通，其具有足够小的面积，使得从壁上的每个点到墨滴喷射孔的压力脉冲传播时间的差小于1微秒。

公开(公告)号：US06932458B2

公开(公告)日：2005-08-23

申请号：US10303443

申请日：2002-11-25

Applicant: Stuart D. Howkins ,  Charles A. Willus

Inventor： Stuart D. Howkins ,  Charles A. Willus

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/16

CPC classification number: B41J2/17556 ,  B33Y30/00 ,  B41J2/14201 ,  B41J2002/14419

Abstract: A method and apparatus to prevent ink starvation includes keeping ink in a primary common reservoir at a high pressure. The ink is transferred from the primary common reservoir to a local reservoir when a pressure drop across a restrictor decreases pressure in the local reservoir. The pressure drop across a restrictor results from a higher ink flow rate due to rapid firing of the transducer.

Abstract translation: 防止墨水不足的方法和装置包括将墨水保持在高压下的初级公共储存器中。 当跨越限流器的压降降低局部储层中的压力时，墨水从主要公共储存器转移到局部储存器。 由于传感器的快速烧制，限流器上的压降来自较高的油墨流速。

公开(公告)号：US06893112B2

公开(公告)日：2005-05-17

申请号：US10376850

申请日：2003-02-28

Applicant: Stuart D. Howkins ,  Charles A. Willus

Inventor： Stuart D. Howkins ,  Charles A. Willus

IPC: B41J2/14 ,  B41J2/045

CPC classification number: B41J2/14274 ,  B41J2202/11

Abstract: A piezo-electric inkjet printing system includes an array of transducers. The array includes at least a first transducer and a second transducer. The first transducer is coupled to a first foot, and elongates in response to a first stimulus, causing ink to eject from a first ink chamber. The second transducer is coupled to a second foot, and elongates in response to a second stimulus, causing ink to eject from a second ink chamber. The first transducer is mechanically isolated from the second transducer.

Abstract translation: 压电式喷墨打印系统包括一组换能器。 阵列至少包括第一换能器和第二换能器。 第一传感器耦合到第一脚，并且响应于第一刺激而伸长，使得墨从第一墨室喷出。 第二传感器耦合到第二脚，并且响应于第二刺激而伸长，导致墨从第二墨室喷出。 第一传感器与第二传感器机械隔离。

公开(公告)号：US06719390B1

公开(公告)日：2004-04-13

申请号：US10403204

申请日：2003-03-31

Applicant: Stuart D. Howkins ,  Charles A. Willus ,  Osamu Machida

Inventor： Stuart D. Howkins ,  Charles A. Willus ,  Osamu Machida

IPC: B41J2938

CPC classification number: B41J2/04525 ,  B41J2/04543 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588

Abstract: An inkjet printing system includes an array of transducers to eject ink, the array including the transducers divided into interspersed sets. A controller controls a firing sequence of the array of transducers. One set of transducers is fired, and after a delay, another set of transducers is fired and then, after further delays, each set is fired in turn. The delays are selected based on known response characteristics of the array of transducers to minimize the average crosstalk for all of the sets.

Abstract translation: 喷墨打印系统包括用于喷射墨水的换能器阵列，该阵列包括被分成散置的组的换能器。 控制器控制换能器阵列的点火顺序。 一组换能器被点燃，经过一段延迟之后，另一组换能器被点燃，然后在进一步的延迟之后，每组都被依次点燃。 基于传感器阵列的已知响应特性选择延迟，以最小化所有组的平均串扰。

公开(公告)号：US4686539A

公开(公告)日：1987-08-11

申请号：US873263

申请日：1986-06-06

Applicant: Lisa M. Schmidle ,  Stuart D. Howkins

Inventor： Lisa M. Schmidle ,  Stuart D. Howkins

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/12 ,  B41J2/205 ,  G01D15/18

CPC classification number: B41J2/04516 ,  B41J2/04528 ,  B41J2/04531 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/12 ,  B41J2/2128 ,  B41J2002/14387 ,  B41J2202/06

Abstract: A method for both reducing the ligament length and satellite droplet problems associated with producing high velocity ink droplets from an ink jet head printing at relatively high ink jet head transport speeds, comprises driving the ink jet head with a composite waveform including independent and successive first, second, and third electrical pulses, each having an exponential leading edge and a step-like trailing edge, the pulses being constructed to have amplitudes, pulse widths, and dead times between pulses, for causing the ink jet head to eject three successive ink droplets, each of increased velocity relative to the preceding droplet, for causing the droplets to merge in flight fo form a single or ultimate droplet having a predetermined velocity.

Abstract translation: 一种用于在相对高的喷墨头传送速度下从喷墨头打印产生高速墨滴相关的减少韧带长度和卫星液滴问题的方法包括以复合波形来驱动喷墨头，复合波形包括独立且连续的第一， 第二和第三电脉冲，每个具有指数前沿和阶梯状后沿，脉冲被构造为具有脉冲之间的幅度，脉冲宽度和死区时间，用于使喷墨头喷射三个连续的墨滴 相对于前一液滴的速度增加的每一个，用于使液滴在飞行中合并形成具有预定速度的单个或最终液滴。