Method of straightening skew in cut sheet and apparatus therefor

Details Method of straightening skew in cut sheet and apparatus therefor Method of straightening skew in cut sheet and apparatus therefor

1994-02-25

1995-05-23

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

With means to align sheet

271 10, 271242, 271902, B65H 702

Patent

active

054174155

ABSTRACT:
A method of straightening a skew in a cut sheet according to the present invention including the steps of feeding the cut sheet toward a sheet forward roller which is rotating forwardly in a sheet forward direction by a sheet feed roller, rotating the sheet forward roller backwardly immediately after a front end of the cut sheet is nipped by the sheet forward roller, adjusting a position of the front end of the cut sheet in a direction orthogonal to the sheet forward direction by a difference between widthwise sheet nipping amounts on right and left ends of the cut sheet, and feeding the cut sheet by rotating the sheet forward roller forwardly again. An apparatus for carrying out the above-mentioned steps is also disclosed.

REFERENCES:
patent: 4248415 (1981-02-01), Steinhilber
patent: 4990011 (1991-02-01), Underwood et al.
patent: 5051014 (1991-09-01), Takagi et al.
patent: 5069442 (1991-12-01), Storz
patent: 5157449 (1992-10-01), Matsuno et al.
patent: 5222724 (1993-06-01), Hirano et al.
patent: 5246224 (1993-09-01), Matsuno et al.

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