Process for manufacturing a tertiary alkyl ether by reactive distillation
    2.
    发明授权
    Process for manufacturing a tertiary alkyl ether by reactive distillation 失效
    通过反应蒸馏制备叔烷基醚的方法

    公开(公告)号:US4847430A

    公开(公告)日:1989-07-11

    申请号:US171339

    申请日:1988-03-21

    摘要: The invention concerns a process for manufacturing methyl tert-butyl ether (MTBE) by reacting methanol with an isobutene-containing hydrocarbon mixture.This process is characterized by the steps of:introducing the reactants into a reaction-distillation zone containing at least two superposed and non-contiguous fixed beds (2a, 2b) of catalyst of the sulfonated resin type, wherein passage-ways are provided for a vapor phase, at least one distillation tray (4a), at least one liquid redistribution tray (5),maintaining distillation conditions in said zone so as to have a descending liquid phase and an ascending vapor phase,maintaining a continuous liquid phase in the lower part of said beds,discharging a vapor phase containing a high proportion of unconverted hydrocarbons from the top (8) of said zone, andwithdrawing a liquid phase of high MTBE content from the bottom (10) of said zone.

    摘要翻译: 本发明涉及通过使甲醇与含异丁烯的烃混合物反应制备甲基叔丁基醚(MTBE)的方法。 该方法的特征在于以下步骤:将反应物引入含有至少两个磺化树脂类型的催化剂的重叠和不连续的固定床(2a,2b)的反应 - 蒸馏区,其中为 蒸气相,至少一个蒸馏塔板(4a),至少一个液体再分配托盘(5),保持所述区域中的蒸馏条件以具有下降的液相和上升的气相,将下一个液相保持在下部 所述床的一部分,从所述区域的顶部(8)排出含有高比例未转化烃的气相,并从所述区域的底部(10)排出高MTBE含量的液相。

    Printer for large format printing using a direct electrostatic printing
(DEP) engine
    4.
    发明授权
    Printer for large format printing using a direct electrostatic printing (DEP) engine 失效
    使用直接静电印刷(DEP)引擎进行大幅面打印的打印机

    公开(公告)号:US6102523A

    公开(公告)日:2000-08-15

    申请号:US994093

    申请日:1997-12-19

    摘要: A printer, with printing width (PW), is provided, for printing toner image on a substrate, having a width (WS) and a length (LS), comprising a DEP printing engine, havinga toner delivery means, having a surface whereon charged toner particles are present for providing a flow of the toner particles from that surface to the substrate,a printhead structure with printing apertures and control electrodes, interposed in the flow of toner particles for image-wise controlling that flow, wherein:the toner delivery means comprises a number, n equal to or larger than 2, of toner applicator modules, each having a width, WTD, smaller than the printing width PW, and at least two of the number, n of toner applicator modules are positioned in a staggered configuration with respect to the substrate.Preferably the printing width of the printer is at least 40 cm.

    摘要翻译: 提供了具有打印宽度(PW)的打印机,用于在具有宽度(WS)和长度(LS))的基底上打印调色剂图像,其包括具有调色剂输送装置的DEP打印引擎,所述调色剂输送装置具有表面, 存在带电的调色剂颗粒,用于从该表面向基材提供调色剂颗粒的流动,具有印刷孔和打印孔的打印头结构,插入调色剂颗粒流中,用于成像地控制该流量,其中:调色剂输送 装置包括数量等于或大于2的调色剂涂抹器模块,每个调色剂涂布器模块的宽度WTD小于印刷宽度PW,并且调色剂涂布器模块的数量n中的至少两个定位在交错的 配置相对于基板。 优选地,打印机的打印宽度至少为40厘米。

    Printer for large format printing
    5.
    发明授权
    Printer for large format printing 失效
    打印机用于大幅面打印

    公开(公告)号:US5956065A

    公开(公告)日:1999-09-21

    申请号:US994092

    申请日:1997-12-19

    摘要: A printer, with printing width (PW) of at least 30 cm printing a toner image on a large substrate, having a width (WS) and a length (LS), including a latent image bearing member having a width (WLI) equal to or larger than the printing width and at least two means for delivering toner are arranged in a staggered configuration around the latent image bearing member and each having a width (WTD) smaller than the width (WLI) of the latent image bearing member.Preferably the latent image bearing member is a photoconductive member.A printer with a shuttle having a swath width of at least 30 cm is also disclosed.

    摘要翻译: 印刷宽度(PW)至少为30厘米的打印机在大型基板上印刷具有宽度(WS)和长度(LS)的调色剂图像,其包括具有宽度(WLI)等于 或大于印刷宽度,并且至少两个用于输送调色剂的装置以交错构型布置在潜像承载部件周围,并且每个具有小于潜像承载部件的宽度(WLI)的宽度(WTD)。 优选地,潜像承载部件是感光部件。 还公开了具有至少30cm的条带宽度的梭子的打印机。

    Direct electrostatic printing device (Dep) and printhead structure with
low current flow between shield and control electrodes
    6.
    发明授权
    Direct electrostatic printing device (Dep) and printhead structure with low current flow between shield and control electrodes 失效
    直接静电印刷设备(Dep)和打印头结构,在屏蔽和控制电极之间具有低电流流动

    公开(公告)号:US5889540A

    公开(公告)日:1999-03-30

    申请号:US574775

    申请日:1995-12-19

    CPC分类号: B41J2/4155

    摘要: An apparatus for direct electrostatic printing includes a back electrode and a printhead structure having a plastic insulating layer and printing apertures arranged therein. Individual control electrodes are combined with the printing apertures on a first side of the insulating layer, and a shield electrode is combined with the printing apertures on a second side of the insulating layer. A toner delivery apparatus is also included for delivering a cloud of dry toner particles in the vicinity of the printing apertures. The printing apertures are constructed and arranged such that, when applying a potential difference of 200V between the shield electrode and each individual control electrode, a current of no more that 50 .mu.A flows from each individual control electrode to the corresponding shield electrode through the corresponding printing aperture. Methods for forming the printing apertures in such a printhead are also disclosed.

    摘要翻译: 用于直接静电印刷的设备包括背面电极和具有塑料绝缘层和布置在其中的印刷孔的打印头结构。 单独的控制电极与绝缘层的第一侧上的打印孔组合,并且屏蔽电极与绝缘层的第二侧上的打印孔结合。 还包括调色剂输送装置,用于在打印孔附近传送干燥的调色剂颗粒云。 打印孔被构造和布置成使得当在屏蔽电极和每个单独的控制电极之间施加200V的电位差时,不超过50μA的电流通过相应的从各个控制电极流到对应的屏蔽电极 打印孔径。 还公开了在这种打印头中形成打印孔的方法。

    Printer for large format printing
    7.
    发明授权
    Printer for large format printing 失效
    打印机用于大幅面打印

    公开(公告)号:US6074112A

    公开(公告)日:2000-06-13

    申请号:US994094

    申请日:1997-12-19

    摘要: A single pass printer, having a printing width (PW) is provided for printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), wherein, i) a number n, equal to or larger than 2, of printing engines, each containing a toner transferring element with a longitudinal axis (width (WPE)) smaller than the printing width (PW) are present, and at least two of the n printing engines, each containing a toner transferring element with a longitudinal axis in the direction of width (WPE), are located so that the longitudinal axis do not coincide. Preferably the printing engines are electro(stato)graphic engines, especially Direct Electrostatic Printing (DEP) engines or electrophotographic engines.

    摘要翻译: 提供具有打印宽度(PW)的单通打印机,用于在基板上印刷调色剂图像,所述基板具有宽度(WS)和长度(LS),其中i)数量n等于或大于 存在大于2的各自包含具有小于打印宽度(PW)的纵轴(宽度(WPE))的调色剂转印元件的打印引擎,并且n个打印引擎中的至少两个包含调色剂转印元件 具有沿宽度方向(WPE)的纵向轴线,使得纵向轴线不重合。 优选地,印刷引擎是电动(stato)图形引擎,特别是直接静电印刷(DEP)引擎或电子照相引擎。

    Device for direct electrostatic print (DEP) comprising individual
control print and control back electrodes
    8.
    发明授权
    Device for direct electrostatic print (DEP) comprising individual control print and control back electrodes 失效
    用于直接静电印刷(DEP)的装置,其包括单独的控制打印和控制背电极

    公开(公告)号:US06012802A

    公开(公告)日:2000-01-11

    申请号:US919411

    申请日:1997-08-27

    摘要: A device for use in the technique of direct electrostatic printing (DEP) on an intermediate or final substrate is described, comprising a receiving member support 5 having control back electrodes 5b and a common shield back electrode 5a; a printhead structure 6 having control print electrodes 6a in combination with apertures 7 and a common shield print electrode 6b; a toner delivery means 1 presenting a cloud 4 of toner particles in the vicinity of said apertures 7. The control print electrodes 6a in the printhead structure 6 and the control back electrodes 5b in the receiving member support 5 are positioned in a 1 to 1 relationship, and the control electrodes of both the printhead structure 6 and the receiving member support 5 are driven in an imagewise manner by a variable voltage source, in order to get a specific toner density on the receiving member substrate 9.

    摘要翻译: 描述了用于中间或最终基板上的直接静电印刷(DEP)技术的装置,其包括具有控制背电极5b和公共屏蔽背电极5a的接收构件支撑件5; 具有与孔7和公共屏蔽印刷电极6b组合的控制印刷电极6a的打印头结构6; 在所述孔7附近呈现调色剂颗粒云4的调色剂传送装置1.打印头结构6中的控制打印电极6a和接收构件支撑件5中的控制背电极5b以1比1的关系 ,并且通过可变电压源以成像方式驱动打印头结构6和接收构件支撑件5的控制电极,以便在接收构件基板9上获得特定的调色剂浓度。

    Device for direct electrostatic printing with a conventional printhead
structure and AC-coupling to the control electrodes
    10.
    发明授权
    Device for direct electrostatic printing with a conventional printhead structure and AC-coupling to the control electrodes 失效
    用于使用常规打印头结构进行直接静电印刷和与控制电极交流耦合的装置

    公开(公告)号:US6109731A

    公开(公告)日:2000-08-29

    申请号:US175259

    申请日:1998-10-20

    IPC分类号: B41J2/415 B41J2/06

    CPC分类号: B41J2/4155 G03G2217/0025

    摘要: A direct electrostatic printing device includes a printhead structure with apertures and control electrodes associated with the apertures for delivering toner from a toner source to a substrate in accordance with image data. A first voltage source is provided to establish a flow of toner particles from the toner source to the substrate. A second voltage source is provided to establish a control voltage between the toner source and the control electrodes to control toner flow in accordance with the image data. The second voltage source provides a first AC field between a toner source and the control electrodes to permit toner flow and a second, diminished, AC field between the toner source and the control electrodes in order to stop the toner flow.

    摘要翻译: 直接静电印刷装置包括具有孔的打印头结构和与孔相关联的控制电极,用于根据图像数据将调色剂从调色剂源输送到基板。 提供第一电压源以建立调色剂颗粒从调色剂源到基底的流动。 提供第二电压源以建立调色剂源和控制电极之间的控制电压,以根据图像数据控制调色剂流。 第二电压源在调色剂源和控制电极之间提供第一AC场,以允许调色剂流动,以及调色剂源和控制电极之间的第二,减小的AC场,以便阻止调色剂流动。