Photocopying – Contact printing – Light boxes
Patent
1993-01-25
1994-12-06
Fuller, Benjamin R.
Photocopying
Contact printing
Light boxes
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.
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patent: 4749671 (1988-06-01), Saito et al.
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Fujimura Naoto
Hirayama Noriko
Sakai Kiyoshi
Sakakibara Teigo
Yamazaki Koji
Barlow Jr. John E.
Canon Kabushiki Kaisha
Fuller Benjamin R.
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