Patent ID: 8478169

Claim:
A development station comprising; a housing having an opening to receive toner and a development window through which a developer can be exposed to an electrostatically charged member such that toner will transfer to the electrostatically charged member according to the electrostatic charge thereon and providing a recirculation path from the development window through an area where toner from the opening can be added to developer in the housing including developer from the development window and returning to the development window; and a drive transmission having an input end to receive an input force, a first output mechanically linked for movement with a first end of the auger and a second output mechanically linked for movement with a second end of the auger with the drive transmission mechanically linking the input end to the first output and to second output and distributing an amount of force supplied at the input end between a first force provided at the first output and at a second force provided at the second output such that the first force and second force can, in combination, rotate the auger against a drag exerted by the developer; wherein both the first force and the second force are less than a third force that is sufficient to drive an alternative auger against the drag from one driven end and wherein the auger has a first yield strength at the first end and a second yield strength at the second end that are each less than a third yield strength that is required to receive the third force at the driven end of the alternative auger.