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US 4,394,086 AGranted
Particle containment apparatus
AssigneeXerox Corporation
InventorsJames M. Hoffman, Jr., Richard A. Lux
Life of this patent
Estimating the term…
Abstract
An apparatus which controls air flowing into and out of a chamber in a housing to minimize the escape of particles therefrom.
Claims10
An apparatus for preventing particle contamination, including
- a moving member;
- a housing defining a chamber for storing the particles;
- and
- means, operatively associated with said housing, for defining a surface area extending in a direction substantially parallel to and spaced from said member with the length of the surface area parallel to said member being much greater than the space between the surface area of said defining means and said member so as to minimize air flow into and out of the chamber in said housing, thereby preventing the escape of particles from the chamber of said housing.
1 more element
An electrophotographic printing machine of the type having marking particles deposited on a moving photoconductive member in image configuration, wherein the improvement includes:
- a housing defining a chamber for storing at least the marking particles therein;
- and
- means, operatively associated with said housing, for defining a surface area extending in the direction substantially parallel to and spaced from the photoconductive member with the length of the surface parallel to the photoconductive member being much greater than the space between the surface area of said defining means and the photoconductive member so as to minimize air flow into and out of the chamber in said housing, thereby preventing the escape of marking particles from the chamber of said housing.
Dependencies are inferred from the claim text.