Apparatus for regulating the toner concentration i

专利名称：Apparatus for regulating the toner

concentration in a electrophotographicdevice

发明人：WHITED; CHARLES A.申请号：US416173申请日：19731115公开号：US3873197A公开日：19750325

摘要：An apparatus in which the concentration of particles in a mix is controlled. Theapparatus includes an electrode contacting the mix and electrically biased to attractparticles thereto. After the particles are deposited on the electrode, it is illuminated withlight rays. The intensity of the light rays transmitted from the electrode with theparticles adhering thereto is indicative of the concentration of particles in the mix. Thislight ray intensity is detected. Thereafter, the electrode is discharged. A display showswhen the electrical charge remaining thereon reached a preselected level.

申请人：XEROX CORPORATION

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