Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Device for monitoring the ink supply in ink recording devices










Image Number 2 for United States Patent #4196625.

A device for monitoring the supply of electrically conductive recording fluid in a supply container for ink recording devices and other recording devices utilizing recording fluid, employing electrodes which are wetted by recording fluid and a circuit arrangement which detects the electrical resistance between the electrodes and triggers a display device when the amount of recording fluid falls below a specific volume, in which a plurality of electrodes are provided within the supply container, two electrodes of which define therebetween a fluid-specific standard resistance, formed by the recording fluid, and two electrodes defined therebetween a resistance, formed by the recording fluid, which changes in dependence upon the level of the fluid, with at least those electrodes which detect the fluid-specific standard resistance being disposed in an area of the supply container which is constantly wetted by fluid.








 
 
  Recently Added Patents
Lightning-protective explosion-preventive fastener
Calendar integration methods and systems for presentation of events having combined activity and location information
Computerized on-board system for controlling a train
Organic semiconductor compound, semiconductor device, solar cell and producing method of organic semiconductor compound
Cooler
Anti-infective agents and uses thereof
Touch panel structure and manufacturing method thereof
  Randomly Featured Patents
MRT apparatus, method and computer program product for determining the speed of a flowing medium
Electrophotographic apparatus having original separation means
Electrical box extension
Thermal transfer recording apparatus having intermediate transfer medium
Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfinylazetidinones using molecular sieves
Cutting methods and cutting apparatus
Motor vehicle with an air-conditioning system
Chocolate heat-resistance by particulate polyol gel addition
Apparatus and method for in vivo analysis of red and white blood cell indices
Sensor platform for use in seismic reflection surveys