公开(公告)号：US4286466A

公开(公告)日：1981-09-01

申请号：US83067

申请日：1979-10-09

申请人： Ralph J. Stewart

发明人： Ralph J. Stewart

IPC分类号： G01N1/10 ,  G01N1/14 ,  G01N1/20 ,  G01N1/24

CPC分类号： G01N1/20 ,  G01N1/14 ,  G01N1/2035 ,  G01N2001/1006 ,  G01N2001/1018 ,  G01N2001/1463 ,  G01N2001/242

摘要： A pneumatic sampler for use in collecting a sample of xerographic toner from a mass of such toner. A positive-pressure air source is connected to atmosphere through a venturi so as to produce a negative-pressure source. The positive-pressure source is also adapted to be connected through a first conduit to the toner mass. Positive-pressure airflow through this first conduit both purges the first conduit of residual toner and fluidizes at least a portion of the toner mass. A toner sample container is adapted to be simultaneously connected through a second conduit to the venturi. The resulting negative-pressure airflow through the second conduit evacuates the container. Negative-pressure induced airflow also purges the second conduit of residual toner. The container is connected to the toner mass through the series-connected and now-purged first and second conduits, and the negative-pressure within the container produces flow of toner from the toner mass to the container.

摘要翻译： 一种用于从大量这种调色剂收集静电印刷调色剂样品的气动取样器。 正压空气源通过文丘里管连接到大气，以产生负压源。 正压源还适于通过第一导管连接到调色剂块。 通过该第一导管的正压气流清洗残留调色剂的第一导管并使调色剂块的至少一部分流体化。 调色剂样品容器适于通过第二导管同时连接到文丘里管。 所产生的通过第二导管的负压气流排出容器。 负压引起的气流也清除残留调色剂的第二导管。 容器通过串联连接和现在清洗的第一和第二导管连接到调色剂块，并且容器内的负压产生调色剂从调色剂块到容器的流动。