Moving exposure system
OwnerDonald J. Kleinschnitz, Jr.inventor
Life of this patent
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Abstract
A moving exposure system is provided having a semiconductor light source, which may be incorporated in a module with modulating electronics, and disposed on a moveable platform for exposing a special surface to light rays. The moving exposure system can be optically coupled to a printer's photoconductive element by means of a flat field correction device such as a lens or a fiber optic bundle, in the case of rotating motion of the light source, which maximizes the area exposed while minimizing the bulk of the exposure apparatus.
Claims18
Apparatus for exposing a special surface to light rays comprising:
- a semi-conductor light source with a light output;
- means coupled to said light source for modulating said light source;
- means for enabling scanning by the light output;
- and
- means optically coupled to the light output for optically modifying said light output whereby any optical aberration in the light output due to the scanning is corrected.
An apparatus for exposing a special surface to light rays comprising:
- at least one light source module each comprising a semiconductor light source with a light output, and modulating circuitry coupled and disposed adjacent to said light source;
- and
- means for moving said light source module whereby scanning by the light output is provided.
An apparatus for exposing a special surface with light rays comprising:
- a movable platform;
- a semi-conductor light source having a light output and disposed on said platform;
- modulating circuitry electronically coupled to said light source and disposed immediately adjacent to said light source;
- a light output modification element connected to said light source;
- means for encasing said light source, modulating circuitry and light output modification element in a single module disposed on said platform;
- a shaft connected to said platform;
- a motor mechanically coupled to said shaft;
- and
- optical means optically coupled to the light output for providing a flat field correction.
An apparatus for exposing a special surface to light rays comprising:
- a rotatable hollow shaft;
- a stationary semi-conductor light source disposed within said shaft and having a light output along said shaft;
- means coupled to said light source for modulating said light source;
- optical means mounted on said shaft for deflecting the light output towards the special surface;
- and
- a motor mechanically coupled to said shaft whereby the shaft can be rotated to provide scanning by the light output.
In an electro-photographic printer having a photoconductive surface, and an exposure system for changing a charge in the photo-conductive surface, an improved exposure system comprising:
- a semi-conductor light source with a light output;
- means coupled to said light source for modulating said light source;
- means for enabling scanning by the light output;
- and
- means optically coupled to the light output for optically modifying said light output whereby any optical aberration in the light output due to the scanning is corrected.
In an electro-photographic printer having a photoconductive surface and a light source for changing a charge in the photo-conductive surface;
- an improved exposure system comprising:
- a rotatable hollow shaft;
- a stationary semi-conductor light source disposed within said shaft and having a light output along said shaft;
- means coupled to said light source for modulating said light source;
- optical means mounted on said shaft for deflecting the light output towards the special surface;
- and
- a motor mechanically coupled to said shaft whereby the shaft can be rotated to provide scanning by the light output.
Dependencies are inferred from the claim text.