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Photo-sensitive drum formed from extruded or drawn blank and image recording apparatus having same

  • US 5,740,501 A
  • Filed: 05/17/1996
  • Issued: 04/14/1998
  • Est. Priority Date: 06/01/1995
  • Status: Expired due to Fees
First Claim
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1. A photo-sensitive drum characterized by a blank tube comprising:

  • a hollow cylinder section;

    a center axis section arranged within the hollow cylinder section concentrically therewith; and

    a plurality of radially extending rib sections extending substantially parallel to said hollow cylinder section and said center axis section rigidly interconnecting the cylinder section and the center axis section;

    at least said center axis section having a length which is not substantially less than the length of said cylinder section; and

    wherein said cylinder section, said center axis section and said rib sections forming said blank tube are all integrally formed through extrusion or draw-forming.

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