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ETCHED DEVELOPER ROLL

IP.com Disclosure Number: IPCOM000024046D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 183K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the development system of an electrophotographic printing machine, a developer roller 10 has a magnet disposed interiorly thereof. As developer roller 10 rotates, it advances developer material into contact with the latent image recorded on the photoconductive surface. As shown in the drawing, developer roller 10 includes a multiplicity of small, shallow depressions 12 in the peripheral surface thereof.

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XEROX DISCLOSURE JOURNAL

ETCHED DEVELOPER ROLL Proposed Classification

R. E. Hewitt U.S. Cl. 118/653 mt. CL G03g 15/08

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-o - 0 - 0 - 0- 0 - 0 - 0 - 0-

o o a a 0 0 0 0 0

000000000

In the development system of an electrophotographic printing machine, a developer roller 10 has a magnet disposed interiorly thereof. As developer roller 10 rotates, it advances developer material into contact with the latent image recorded on the photoconductive surface. As shown in the drawing, developer roller 10 includes a multiplicity of small, shallow depressions 12 in the peripheral surface thereof.

Each depression 12 is sufficiently large to receive a carrier bead of the developer material, However, the depth is insufficient to permit the carrier beads to be flush with the surface of roll 10. Hence, the carrier bead extends above the roll surface. This increases the roughness of the roll surface and prevents subsequent layers of developer material from sliding with respect thereto. In this manner, transpor- tation of the developer material is significantly improved.

Volume 4 Number 4 3uly/August 1979 447

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                  XEROX DISCLOSURE JOURNAL 44$ Volume ~ Number 4 July/August 1979

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