US 4,388,274 AGranted

Ozone collection and filtration system

AssigneeXerox Corporation

InventorsJohn L. Rourke, Jack C. Azar, William K. Murphy

Life of this patent

Estimating the term…

Loading patent…

Abstract

A novel apparatus for the collection and removal of ozone generated during the operation of machines, such as an electrostatographic copying machine, is disclosed which includes the substantially complete collection of ozone generated by the use of an apertured plenum at the point of ozone generation, and the substantially complete removal of the ozone collected by the use of a fixed bed filtering device which has a large bed area to volume ratio. The disclosed apparatus permits the substantially complete collection of all ozone generated in a relatively small volume of air accomplished with a low pressure drop, so that the ozone collection and removal system would not interfere with the normal operation of the electrostatographic copying machine.

Claims14

Dependent claims

An apparatus for the collection and removal of ozone and other noxious gases generated by corona discharge devices in an electrostatographic copying machine which comprises:

at least one corona discharge device comprising a housing, a corona emission electrode mounted in said housing, and an apertured plenum mounted in said housing away from the path of the corona emission, said apertured plenum having a surface adjacent said corona emission electrode for biasing the corona emission;
an ozone and other noxious gases filtering device comprising a low pressure drop fixed bed filter having a large bed area to volume ratio;
conduit means connecting the apertured plenum in said corona discharge device with an air inlet in said filtering device;
and air circulation means communicating with said apertured plenum, said conduit means and said filtering device for collecting air containing ozone and other noxious gases therethrough.

1 more element

Dependencies are inferred from the claim text.