Ozone filter used in electrophotographic apparatus including cat

Details Ozone filter used in electrophotographic apparatus including cat Ozone filter used in electrophotographic apparatus including cat

1993-01-25

1994-12-06

Fuller, Benjamin R.

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502263, 358300, 355 18, G03G 2100

Patent

active

053715772

ABSTRACT:
An electrophotographic apapratus of the type in which a photosensitive member is charged by atmospheric discharge, is equipped with an air filter including a substrate and a catalyst layer formed on the substrate including at least three components of CuO, MnO.sub.2 and a water-soluble polymer. The catalyst layer shows a reactivity with NOx and the water-soluble polymer traps the resultant HNO.sub.3 while retaining a high ozone removing efficiency, whereby the apparatus can show excellent electrophotographic performances even after successive use while preventing deterioration due to ozone, NOx and HNO.sub.3 produced by the atmospheric discharge.

REFERENCES:
patent: 4143118 (1979-03-01), Laing
patent: 4200552 (1980-04-01), Noguchi et al.
patent: 4280926 (1981-07-01), Abe et al.
patent: 4388274 (1983-06-01), Rourke et al.
patent: 4680040 (1987-07-01), Gooray
patent: 4749671 (1988-06-01), Saito et al.
patent: 4876606 (1989-10-01), Banno et al.

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