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公开(公告)号:EP2640577B1
公开(公告)日:2015-07-15
申请号:EP11788217.5
申请日:2011-11-21
IPC分类号: B41J2/175
CPC分类号: B41J2/17566 , B41J2/17513 , B41J2/17553
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公开(公告)号:EP2640577A1
公开(公告)日:2013-09-25
申请号:EP11788217.5
申请日:2011-11-21
IPC分类号: B41J2/175
CPC分类号: B41J2/17566 , B41J2/17513 , B41J2/17553
摘要: The invention provides a method and system for determining fluid levels in an inkjet printer. A non-contact sensor array is provided external to the container in which the levels are to be determined and each sensor in the array is sequentially switched into a sensing circuit until a change in capacitance is noted. The sensing circuit is preferably a frequency oscillation circuit whose frequency is defined by circuit capacitance.
摘要翻译: 本发明提供了一种用于确定喷墨打印机中的液位的方法和系统。 非接触式传感器阵列设置在容器的外部,其中要确定电平,并且将阵列中的每个传感器顺序地切换到感测电路中,直到注意到电容的变化。 感测电路最好是频率振荡电路,其频率由电路电容确定。
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