Developer roller
First Claim
1. An apparatus for developing a latent image recorded on an image receiving member, including:
- a housing defining a chamber for storing a supply of marking particles therein;
means for transporting the marking particles from the chamber in said housing to a development zone closely adjacent to the latent image recorded on the image receiving member, said transporting means comprising a support member having the exterior surface thereof roughened forming a multiplicity of peaks extending outwardly therefrom with a coating of a polymeric material filling the space between adjacent peaks so that at least a portion of the peaks of the support member extend beyond the coating of polymeric material thereon; and
means for controlling the thickness of the layer of marking particles on said transporting means, said controlling means having a free edge contacting the peaks of the support member of said transporting means and being spaced from the polymeric material coated thereon.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus in which a latent image recorded on an image receiving member is developed. A developer roller transports the marking particles into the development zone. The developer roller has the exterior surface thereof roughened forming a multiplicity of peaks extending outwardly therefrom with a coating of polymeric material filling the space between adjacent peaks. A blade is positioned to have the free end thereof contacting the peaks on the developer roller. The blade has a plurality of apertures therein through which the marking particles pass. In this way, the thickness of the layer of marking particles on the developer roller is controlled.
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Citations
26 Claims
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1. An apparatus for developing a latent image recorded on an image receiving member, including:
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a housing defining a chamber for storing a supply of marking particles therein; means for transporting the marking particles from the chamber in said housing to a development zone closely adjacent to the latent image recorded on the image receiving member, said transporting means comprising a support member having the exterior surface thereof roughened forming a multiplicity of peaks extending outwardly therefrom with a coating of a polymeric material filling the space between adjacent peaks so that at least a portion of the peaks of the support member extend beyond the coating of polymeric material thereon; and means for controlling the thickness of the layer of marking particles on said transporting means, said controlling means having a free edge contacting the peaks of the support member of said transporting means and being spaced from the polymeric material coated thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrophotographic printing machine of the type having a photoconductive member arranged to have a latent image recorded thereon, wherein the improvement includes:
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a housing defining a chamber for storing a supply of marking particles therein; means for transporting the marking particles from the chamber in said housing to a development zone closely adjacent to the latent image recorded on the photoconductive member, said transporting means comprising a support member having the exterior surface thereof roughened forming a multiplicity of peaks extending outwardly therefrom with a coating of polymeric material filling the space between adjacent peaks so that at least a portion of the peaks of the support member extend beyond the coating of polymeric material thereon; and means for controlling the thickness of the layer of marking particles on said transporting means, said controlling means having a free edge contacting the peaks of the support member of said transporting means and being spaced from the polymeric material coated thereon. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification