Screen for an electrophotographic printing machine
AssigneeXerox Corporation
InventorWilliam J. Hanson
Life of this patent
Estimating the term…
Abstract
An electrophotographic printing machine in which a transparency light image is projected through a screen having a plurality of opaque regions. At least a portion of the opaque regions have a light reflecting surface on one side thereof and a light absorbing surface on the other side thereof. The screen is positioned so that the light reflecting surfaces of the opaque regions form a visual image of the transparency light image being projected therethrough. Incident light rays are absorbed by the absorbing surfaces of the opaque regions.
Claims15
An electrophotographic printing machine for reproducing a transparency, including:
- a photoconductive member;
- means for charging at least a portion of said photoconductive member to a substantially uniform level;
- a screen member comprising a plurality of opaque regions with at least a portion thereof having a light reflecting surface on one side thereof and a light absorbing surface on the other side thereof;
- and
- means for projecting a light image of the transparency through said screen member onto the charged portion of said photoconductive member to record thereon a modulated electrostatic latent image, said screen member being positioned so that the reflecting surfaces of the opaque regions form a visual image of the transparency and the absorbing surfaces of the opaque regions absorb incident light rays.
A screen for use in an electrophotographic printing machine, including:
- a substantially transparent member;
- and
- a plurality of opaque regions disposed on said transparent member with at least a portion of said opaque regions having a light reflecting surface on one side thereof and a light absorbing surface on the other side thereof.
Dependencies are inferred from the claim text.