Patent ID: 8814160

Claim:
A de-skewing mechanism for de-skewing a printing medium, the printing medium being conveyed by a conveying mechanism in a first linear velocity, the de-skewing mechanism comprising: a first calibrating roller for conveying a first side of the printing medium in a second linear velocity greater than the first linear velocity; a second calibrating roller for conveying a second side of the printing medium in the second linear velocity; a first torque limiting member coupled to the first calibrating roller for stopping driving the first calibrating roller when the first side of the printing medium reaches a predetermined tension, such that the second side of the printing medium is capable of proceeding relative to the first side, so as to be aligned with the first side; and a second torque limiting member coupled to the second calibrating roller for stopping driving the second calibrating roller when the second side of the printing medium reaches the predetermined tension, such that the first side of the printing medium is capable of proceeding relative to the second side, so as to be aligned with the second side.