The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 23, 2010

Filed:

May. 25, 2008
Applicants:

Chang-lung Yu, Hsinchu, TW;

Chen-tsai Tsai, Hsinchu, TW;

Hsueh-chou Hsu, Hsinchu County, TW;

Tien-ho Hsu, Hsinchu, TW;

Inventors:

Chang-Lung Yu, Hsinchu, TW;

Chen-Tsai Tsai, Hsinchu, TW;

Hsueh-Chou Hsu, Hsinchu County, TW;

Tien-Ho Hsu, Hsinchu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A de-skew mechanism, in an image forming device, with a correcting member disposed in a rotatable manner to the rotary shaft and turning with driving roller by a spring between them. A torque spring suppresses the turning of the correcting member to correct the skew of the medium. When conveyed, the medium will butt against the correcting member to be stopped and corrected. The medium conveying force and the force that the spring brings to the driving roller are sufficient for turning the correcting member and passing therethrough. At one time, the force that the correcting member brings to the medium will reduce to zero. As such, the medium will not be damaged by the correcting member while being conveyed.


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