公开(公告)号：US20090320568A1

公开(公告)日：2009-12-31

申请号：US12524489

申请日：2008-01-24

申请人： Guido Desie ,  Erik Van Geel ,  Danny Van Gemert ,  Gunter Dieltjens ,  Karl Van Den Bossche

发明人： Guido Desie ,  Erik Van Geel ,  Danny Van Gemert ,  Gunter Dieltjens ,  Karl Van Den Bossche

IPC分类号： G01N11/06 ,  G01N13/02

CPC分类号： G01N11/06 ,  G01N13/02 ,  G01N2013/0241 ,  G01N2015/1493

摘要： Methods and apparatus for measuring viscosity and/or surface tension of a liquid are described in which droplets are formed at a needle or pipette containing a sample of the test liquid and a size-related characteristic of the droplets such as droplet size, volume, diameter, or weight of the test liquid are measured by means of by capturing an image of the droplets and obtaining the size-related characteristic from the captured image. Subsequently or previously, a volume of the same sample of the test liquid is drained from the needle or pipette under pump pressure or a hydrostatic pressure, and an elution time is measured. The method and apparatus allows or includes determining the viscosity from the elution time, and determining the surface tension from the viscosity and the size-related characteristic of the droplet such as droplet size, volume, diameter, or weight of the test liquid.

摘要翻译： 描述了用于测量液体的粘度和/或表面张力的方法和设备，其中在包含测试液体的样品的针或移液管上形成液滴，并且液滴的尺寸相关特性如液滴尺寸，体积，直径 ，或通过捕获液滴的图像并从捕获的图像获得尺寸相关特性来测量测试液体的重量。 随后或之前，在泵压力或静水压力下，从针或移液管中排出相同样品的相同样品的体积，并测量洗脱时间。 该方法和装置允许或包括从洗脱时间确定粘度，以及根据液滴的粘度和尺寸相关特性（例如液滴尺寸，体积，直径或重量）测定表面张力。

公开(公告)号：US6109731A

公开(公告)日：2000-08-29

申请号：US175259

申请日：1998-10-20

申请人： Danny Van Gemert ,  Raf Peymen ,  Jacques Leonard ,  Hilbrand Van Den Wijngaert ,  Guido Desie

发明人： Danny Van Gemert ,  Raf Peymen ,  Jacques Leonard ,  Hilbrand Van Den Wijngaert ,  Guido Desie

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。