Electrostatographic blender assembly and method
AssigneeHeidelberger Druckmaschinen AG
InventorsJohn P. Toepper, Paul E. Thompson, Gerald M. Darby, Kenneth M. Patterson
Life of this patent
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Abstract
The invention relates generally to development apparatus for mixing and applying developer material to a latent image on an image-bearing member in an electrostatographic reproduction machine, such as a copier or printer. More particularly, this invention relates to a blender of the type for mixing electrostatographic developer comprising a plurality of blender segments mounted on a shaft. A resilient spacer is provided, according to an aspect of the invention, wherein said resilient spacer and said plurality of blender segments are compressed between said pair of stops. Residual looseness due to tolerance stack-up is eliminated.
Claims20
A blender for mixing electrostatographic developer, comprising:
- a shaft having a pair of stops spaced along a length thereof;
- a plurality of blender segments, each said blender segment having an aperture, said shaft being received within said aperture of each said blender segment;
- and,
- a resilient spacer, wherein said resilient spacer and said plurality of blender segments are compressed between said pair of stops.
A method of fabricating a blender for mixing electrostatographic developer, comprising:
- disposing a resilient spacer and a plurality of blender segments on a shaft, each said blender segment having an aperture, said shaft being received within said aperture of each said blender segment;
- and
- compressing said resilient spacer and said plurality of blender segments between a pair of stops attached to said shaft.
A blender for mixing electrostatographic developer, comprising:
- a shaft having a pair of stops spaced along a length thereof and a plurality of serrations, one of said stops comprising a snap ring engaging one of said serrations;
- a plurality of blender segments, each said blender segment having an aperture, said shaft being received within said aperture of each said blender segment;
- and,
- at least one belleville washer disposed immediately adjacent one of said stops, wherein said at least one belleville washer and said plurality of blender segments are compressed between said pair of stops.
Dependencies are inferred from the claim text.