| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sheet processing apparatus in which skew detection errors for sheets conveyed therein are reduced and punch holes can be punched at accurate positions. <P>SOLUTION: The sheet processing apparatus includes a conveying motor for conveying a sheet along a conveying path, a skew detecting unit configured to detect a quantity of the skew of the conveyed sheet, a hole punching section arranged downstream from the skew detecting unit, an attitude control unit configured to carry out skew correction by changing a tilt angle of the hole punching section according to the quantity of the skew, a detecting unit configured to detect the forward edge and the rear edge of the sheet conveyed into the hole punching section, and a control unit configured to control a conveying motor to control the conveying speed of the sheet. During a period that the detecting unit detects the forward edge of the sheet and the detecting unit detects the rear edge, the control part decelerates the sheet from a first conveying speed to a second conveying speed. After the detecting unit detects the rear edge of the sheet, the control part stops the conveyance of the sheet and executes punching processing to the sheet when the conveyance is stopped. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
