Point of use toner filtration
AssigneeXerox Corporation
InventorsSteven C. Hart, Cyril G. Edmunds, Thomas J. Behe
Life of this patent
Estimating the term…
Abstract
An apparatus for filtering contaminants from marking particles is provided. The apparatus includes a conduit and a mover for moving the marking particles within the conduit. The apparatus also includes a screen positioned adjacent the conduit so that substantially all the marking particles discharged from the conduit pass through the screen.
Claims20
An apparatus for filtering contaminants from new marking particles in a container, comprising:
- a conduit, connectable to the container;
- means for moving the marking particles from the container and through the conduit;
- a screen positioned adjacent said conduit;
- a vessel for collecting the contaminants, said vessel operably connected to said conduit;
- and
- a developer housing defining a chamber therein for mixing the marking particles, said developer housing adapted to receive the marking particles from said screen, said screen positioned adjacent said developer housing, said screen defining a passage for the marking particles from said conduit to said developer housing so that substantially all the marking particles discharged from said conduit pass through said screen and directly into said developer housing and so that at least a portion of the contaminants are carried by said moving means in said conduit toward said vessel.
A printing machine of the type having a developer unit adapted to develop with new marking particles a latent image, comprising:
- a container for storing the new marking particles;
- a conduit, operably connected to said container;
- means for moving the marking particles from the container and through the conduit;
- a screen positioned adjacent said conduit;
- a vessel for collecting contaminants, said vessel operably connected to said conduit;
- and
- a developer housing defining a chamber therein for mixing the marking particles, said developer housing adapted to receive the marking particles from said screen, said screen positioned adjacent said developer housing, said screen defining a passage for the marking particles from said conduit to said developer housing so that substantially all the marking particles discharged from said conduit pass through said screen and directly into said developer housing and so that at least a portion of the contaminants are carried by said moving means in said conduit toward said vessel.
An apparatus for filtering contaminants from new marking particles in a container, comprising:
- a conduit, connectable to the container;
- an elongated member mounted rotatably in said conduit, said member including a shaft and a plurality of pliant elements extending outwardly from said shaft in at least a partially spiral pattern and in intimate contact with said conduit;
- a screen positioned adjacent said conduit;
- and
- a developer housing defining a chamber therein for mixing the marking particles, said developer housing adapted to receive the marking particles from said screen, said screen positioned adjacent said developer housing, said screen defining a passage for the marking particles from said conduit to said developer housing so that substantially all the marking particles discharged from said conduit pass through said screen and directly into said developer housing.
Dependencies are inferred from the claim text.