Charging roller for an imaging device

• US 8,478,168 B2
• Filed: 06/30/2010
• Issued: 07/02/2013
• Est. Priority Date: 06/30/2010
• Status: Active Grant

• Current Assignee: Static Control Components Incorporated (Ninestar Corporation)
• Original Assignee: Static Control Components Incorporated (Ninestar Corporation)
• Inventors: Lewis, Lawrence Dale
• Primary Examiner(s): GRAINGER, QUANA MASHELL
• Application Number:
  US12/827,328
• Publication Number:
  US 20120003011A1
• Time in Patent Office: 1,098 Days
• Field of Search: 399/176
• US Class Current: 399/176
• CPC Class Codes: G03G 15/0233 Structure, details of the charging member, e.g. chemical composition, surface properties

Abstract

A charging roller for an imaging device may include a shaft having a shaft length; a cylindrical foam layer partially covering the shaft and having a foam thickness, a first foam end and a second foam end, the cylindrical foam layer having a foam length less than the shaft length; a skin layer covering the cylindrical foam layer; and first and second retention members, the first retention member disposed adjacent to the first foam end and the second retention member disposed adjacent to the second foam end.

Claims

1. A charging roller for an imaging device comprising:

a shaft having a shaft length;

a cylindrical foam layer partially covering the shaft and having a foam thickness, a first foam end and a second foam end, the cylindrical foam layer having a foam length less than the shaft length;

a skin layer covering the cylindrical foam layer; and

first and second retention members, the first retention member disposed adjacent to the first foam end and the second retention member disposed adjacent to the second foam end, wherein the length of the skin layer is the same as the length of the foam.

2. The charging roller of claim 1 wherein the cylindrical foam layer comprises a conductive foam.

3. The charging roller of claim 2 wherein the cylindrical foam layer is extruded and placed around the shaft.