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AssigneeXerox Corporation
InventorsLloyd A. Williams, Joannes N. M. deJong, Matthew Dondiego, Michael J. Savino
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A sheet registration system, especially for printers, with a lower cost and lower mass-movement system for both sheet deskewing and transverse registration repositioning of the sheets in the same integral system, especially for higher speed printing. Only one main drive motor can drive both of the two spaced apart sheet feeding nips, together with a much lower power, and lower cost, deskewing differential drive system for providing the relative differential angular movement of the two spaced sheet feeding nips to achieve the desired amount of sheet deskewing movement, without interrupting the forward feeding movement of the sheet. Also disclosed are extensive further reductions in the component mass of the lateral translation movement for lateral sheet registration.
In a combined sheet registration system of a lateral sheet registration system combined with a sheet deskewing and sheet forward feeding system for inducing skew rotation of a sheet while also feeding the sheet forwardly in a sheet path with first and second laterally spaced positively driven sheet feeding nips, wherein said sheet skewing system selectably provides a difference in said driving of said first and second positively driven sheet feeding nips for said inducing of said rotation of a sheet, and wherein said lateral sheet registration system provides lateral shifting of said first and second laterally spaced positively driven sheet feeding nips, the improvement comprising:
In a combined sheet registration method of lateral sheet registration and sheet deskewing while the sheet is being rapidly driven in a sheet path, by rotatably driving first and second laterally spaced apart sheet drivers at an angular velocity to provide said rapid sheet path driving, wherein said sheet deskewing is provided by providing a controlled angular difference between said first and second laterally spaced apart sheet drivers, and wherein said lateral sheet registration is provided by laterally shifting both of said first and second laterally spaced apart sheet drivers with the sheet therein, the improvement comprising:
Dependencies are inferred from the claim text.