Developing apparatus provided with a portable developing unit fo

Details Developing apparatus provided with a portable developing unit fo Developing apparatus provided with a portable developing unit fo

1995-11-01

1997-04-01

Dang, Thu A.

Electrophotography

Diagnostics

Component present or mounted

118691, 399 30, 399119, G03G 1500

Patent

active

056171889

ABSTRACT:
A developing apparatus has a rotatable developing unit having a plurality of developing devices each provided with a containing portion for containing a developer and a carrying member carrying the developer, a light emitting element for applying light toward the containing portion, and a light receiving element provided discretely from the developing unit and common to the plurality of developing devices and for receiving the light transmitted through the containing portion.

REFERENCES:
patent: 4593991 (1986-06-01), Aoki et al.
patent: 4620783 (1986-11-01), Tanaka et al.
patent: 4646679 (1987-03-01), Ohno et al.
patent: 4697915 (1987-10-01), Hayashi et al.
patent: 4743938 (1988-05-01), Ohno
patent: 4937626 (1990-06-01), Kohtani et al.
patent: 5229821 (1993-07-01), Fujii
patent: 5276479 (1994-01-01), Inomata

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