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Image Forming Apparatus

  • US 20090169247A1
  • Filed: 12/22/2008
  • Published: 07/02/2009
  • Est. Priority Date: 12/28/2007
  • Status: Active Grant
First Claim
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1. An image forming apparatus comprising:

  • an apparatus main body;

    a process unit provided in the apparatus main body and having a drive input member; and

    a drive transmission member provided in the apparatus main body and configured to engage with the drive input member so as to transmit a driving force to the drive input member while permitting a positional gap of the drive input member within a predetermined range,wherein,the drive transmission member comprises;

    a guide core member comprising;

    a distal end core portion which is formed at an end portion lying a downstream side in an engagement direction of the drive transmission member with the drive input member and which has a first outside diameter; and

    a proximal end core portion which is formed upstream of the distal end core portion in the engagement direction and which has a second outside diameter that is larger than the first outside diameter;

    a reciprocating member in which the guide core member is inserted along the engagement direction, the reciprocating member comprising;

    a distal end cylindrical portion which has a first inside diameter; and

    a proximal end cylindrical portion which is formed upstream of the distal end cylindrical portion in the engagement direction and which has a second inside diameter that is larger than the first inside diameter; and

    a pressing member interposed between the guide core member and the reciprocating member for connecting the guide core member and the reciprocating member.

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