Drop-on-demand ink jet printer with controlled fluid flow to effect drop ejection
    3.
    发明授权
    Drop-on-demand ink jet printer with controlled fluid flow to effect drop ejection 失效
    具有受控流体流动的点滴式喷墨打印机以实现液滴喷射

    公开(公告)号:US06568799B1

    公开(公告)日:2003-05-27

    申请号:US10055295

    申请日:2002-01-23

    CPC classification number: B41J2/14 B41J2202/12

    Abstract: A drop on demand microfluidic ink jet printing system includes an ink flow chamber having a nozzle opening in a wall of the flow chamber through which ink droplets are ejected when ink in the flow chamber is at or above a predetermined positive pressure. An inlet channel opens into the flow chamber to supply thermally-responsive ink to the flow chamber at or above the predetermined pressure. A microfluidic outlet channel communicates the flow chamber with a low pressure ink reservoir such that thermally-responsive ink is normally transported from the flow chamber at a flow velocity sufficient to maintain ink in the flow chamber at a pressure less than the predetermined positive pressure. A valve selectively restricts the flow of the thermally-responsive ink through the microfluidic outlet channel sufficiently to cause an increase in ink pressure in the flow chamber to at least the predetermined positive pressure, the valve including a heater in contact with at least a portion of the associated microfluidic outlet channel, whereby the viscosity of the thermally-responsive ink can selectively be increased by heat from the heater to restrict the flow of the thermally-responsive ink from the flow chamber such that an ink droplet is ejected through the nozzle opening.

    Abstract translation: 按需微型喷墨打印系统包括墨水流动室,其具有在流动室的壁中的喷嘴开口,当流动室中的墨水处于或高于预定的正压时,通过该喷嘴开口喷射墨滴。 入口通道通向流动室,以在预定压力或高于预定压力的情况下向流动室供应热响应性油墨。 微流出口通道将流动室与低压储墨器连通,使得热响应性油墨通常以足以将流动室中的墨维持在小于预定正压力的压力的流速从流动室输送。 阀选择性地限制热响应性油墨通过微流体出口通道的流动,足以使流动室中的油墨压力增加到至少预定的正压,该阀包括与至少一部分 相关联的微流体出口通道,由此热响应性油墨的粘度可以通过来自加热器的热量而选择性地增加,以限制来自流动室的热响应性油墨的流动,使得墨滴通过喷嘴开口喷射。

    Replenishable coating for printhead nozzle plate
    7.
    发明授权
    Replenishable coating for printhead nozzle plate 失效
    打印头喷嘴板可补充涂层

    公开(公告)号:US06364456B1

    公开(公告)日:2002-04-02

    申请号:US09470809

    申请日:1999-12-22

    CPC classification number: B82Y30/00 B41J2/1433 B41J2/16552

    Abstract: A nozzle plate for an ink jet printhead, the nozzle plate having the following layers in the order recited: a) a first monomolecular layer of an organic material having first and second functional groups, the first functional group of the first monomolecular layer being bound to the surface of the nozzle plate, and the second functional group of the first monomolecular layer being bound to a second monomolecular layer, and b) the second monomolecular layer of an organic material having first and second functional groups, the first functional group of the second monomolecular layer being bound to the second functional group of the first monomolecular layer, and the second functional group of the second monomolecular layer is an anti-wetting group.

    Abstract translation: 一种用于喷墨打印头的喷嘴板,喷嘴板具有以下顺序的层:a)具有第一和第二官能团的有机材料的第一单分子层,第一单分子层的第一官能团与 喷嘴板的表面和第一单分子层的第二官能团与第二单分子层结合,以及b)具有第一和第二官能团的有机材料的第二单分子层,第二官能团的第二官能团 单分子层与第一单分子层的第二官能团结合,第二单分子层的第二官能团为抗潮湿基团。

    Microfluidic system for controlled fluid mixing and delivery
    10.
    发明授权
    Microfluidic system for controlled fluid mixing and delivery 失效
    用于控制流体混合和输送的微流体系统

    公开(公告)号:US06622746B2

    公开(公告)日:2003-09-23

    申请号:US10021457

    申请日:2001-12-12

    Abstract: A microfluidic system is provided for controlling delivery and mixing of thermally-responsive fluids. A plurality of microfluidic inlet channels open into a mixing chamber. A valve is associated with each of the inlet channels for controlling the flow of the thermally-responsive fluids through the inlet channels. The valves include a heater in thermal contact with at least a portion of the associated inlet channel, whereby the viscosity of the thermally-responsive fluids can selectively be controlled by heat to cause a change in flow of the thermally-responsive fluids through the inlet channels. A plurality of microfluidic outlet channels may be provided for transporting mixed fluids from the mixing chamber. A valve associated with each of the outlet channels controls the flow of the mixed thermally-responsive fluids through the outlet channels. These valves also include a heater in contact with at least a portion of the associated outlet channel, whereby said mixed thermally-responsive fluids can be directed from the mixing chamber selectively through each outlet channel.

    Abstract translation: 提供微流体系统用于控制热响应流体的输送和混合。 多个微流体入口通道进入混合室。 阀与每个入口通道相关联,用于控制通过入口通道的热响应流体的流动。 阀包括与相关入口通道的至少一部分热接触的加热器,由此热响应流体的粘度可以选择性地通过加热来控制,以引起热响应流体通过入口通道的流动变化 。 可以提供多个微流体出口通道用于从混合室输送混合流体。 与每个出口通道相关联的阀控制混合的热响应流体通过出口通道的流动。 这些阀还包括与相关联的出口通道的至少一部分接触的加热器,由此所述混合的热响应流体可以选择性地通过每个出口通道从混合室引导。

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