Apparatus for measuring developer density

Details Apparatus for measuring developer density Apparatus for measuring developer density

1995-05-05

1996-06-25

Brase, Sandra L.

Photocopying

Contact printing

Light boxes

118653, 355203, 355208, G03G 2100

Patent

active

055305300

ABSTRACT:
Developer density measuring apparatus comprising a transparent detection window confronting the interior of a developing device, illumination means for illuminating developer comprising a toner and a carrier accommodated in said developing device, and density determining means for determining developer density by the amount of light reflected from said developer measured through said transparent detection window, and wherein the surface of the transparent detection window on the side confronting the interior of the developing device is roughened.

REFERENCES:
patent: 5117259 (1992-05-01), Etou et al.
patent: 5216469 (1993-06-01), Yamada
patent: 5270784 (1993-12-01), Nakane et al.
patent: 5276481 (1994-01-01), Kinoshita et al.
patent: 5285243 (1994-02-01), Ramai et al.
patent: 5383007 (1995-01-01), Kinoshita et al.
patent: 5398106 (1995-03-01), Eguchi

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