Method and apparatus for detecting ink concentration

Details Method and apparatus for detecting ink concentration Method and apparatus for detecting ink concentration

1999-05-19

2000-10-03

Brase, Sandra

Electrophotography

Control of electrophotography process

Control of developing

399 57, G03G 1510

Patent

active

061284505

ABSTRACT:
A method for detecting the concentration of an ink liquid including charged particulates is disclosed. A first and a second electrodes are immersed in the ink liquid within an ink chamber. The second electrode is cleaned before a voltage pulse having a predetermined pulse width is applied to the first electrode. The voltage pulse causes a current flowing through the second electrode and a discharging current is detected. The concentration of the charged particulates in the ink liquid is detected from a peak value of the discharging current.

REFERENCES:
patent: 4204766 (1980-05-01), Harada
patent: 4860924 (1989-08-01), Simms et al.
patent: 5447056 (1995-09-01), Foote
patent: 5561264 (1996-10-01), Iino et al.
patent: 5724629 (1998-03-01), Iino et al.
patent: 5848322 (1998-12-01), Chen et al.

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