Patent application number | Description | Published |
20090100976 | SHEET PUNCHING APPARATUS AND CONTROL METHOD - A sheet punching apparatus includes a puncher having a plurality of punching blades to punch a sheet, and a press member provided in the puncher to be spaced from the punching blade by a specified distance, and when punching is performed on the sheet, the sheet is pressed by the press member. | 04-23-2009 |
20090102112 | SHEET FINISHING APPARATUS AND CONTROL METHOD - A sheet finishing apparatus includes a punch unit to punch a sheet, and a saddle unit to bundle and to fold the sheets. A position and an inclination angle of a puncher are changed according to a skew amount of the sheet, the puncher is controlled to form punch holes in the sheet at positions symmetric with respect to a folding line, and punching is performed so that an interval between the folding line and the punch hole becomes small at the inside of a bundle of the sheets and becomes large at the front cover side. | 04-23-2009 |
20110012298 | SHEET FINISHING APPARATUS AND CONTROL METHOD - A sheet finishing apparatus includes a punch unit to punch a sheet, and a saddle unit to bundle and to fold the sheets. A position and an inclination angle of a puncher are changed according to a skew amount of the sheet, the puncher is controlled to form punch holes in the sheet at positions symmetric with respect to a folding line, and punching is performed so that an interval between the folding line and the punch hole becomes small at the inside of a bundle of the sheets and becomes large at the front cover side. | 01-20-2011 |
Patent application number | Description | Published |
20100322692 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A 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 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 tilt angle of the hole punching section in accordance with the quantity of 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 the conveying motor to control the conveying speed of the sheet. During a period from when the detecting unit detects the forward edge of the sheet until the detecting unit detects the rear edge, the sheet is decelerated from a first conveying speed to a second conveying speed. After the detecting unit detects the rear edge of the sheet, the conveying of the sheet is stopped and punching processing to the sheet is executed when the conveying is stopped. | 12-23-2010 |
20120188324 | SHEET CONVEYING APPARATUS, ERASING APPARATUS, AND IMAGE FORMING APPARATUS - According to one embodiment, a sheet conveying apparatus includes: a guide section that forms a one side guide surface of a sheet conveying path, the guide section having a first guide member and a second guide member which are continuously arranged from a conveying direction upstream side to a conveying direction downstream side, at least one of the first guide member and the second guide member being a guide member that rotates to open and close; and a joint section that forms an uneven joint with a conveying direction downstream side end of the first guide member and a conveying direction upstream side end of the second guide member, the downstream side end of the first guide member being arranged further on an inner side than the upstream side end of the second guide member with respect to the sheet conveying path if at least one of the first guide member and the second guide member is closed. | 07-26-2012 |
20120227557 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A sheet processing apparatus includes a puncher disposed to make a hole in a sheet to be conveyed,
| 09-13-2012 |
Patent application number | Description | Published |
20080308987 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A sheet processing apparatus includes a first detecting unit including a first sensor and a second sensor arranged at a predetermined spacing from each other on a line orthogonal to a conveying path through which a sheet is conveyed, and a hole punching section provided downstream at a predetermined distance from the first detecting unit and arranged orthogonally to the conveying path of the sheet. The quantity of skew of the sheet is detected in accordance with a difference between time when a forward edge or a rear edge of the sheet passing through the conveying path passes the first sensor and time when the forward edge or rear edge passes the second sensor. Position information of the sheet with respect to the hole punching section is calculated in accordance with information of timing when the first sensor and the second sensor detect the passage of the sheet edge, and the conveying speed of the sheet. | 12-18-2008 |
20080308988 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A 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 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 tilt angle of the hole punching section in accordance with the quantity of 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 the conveying motor to control the conveying speed of the sheet. During a period from when the detecting unit detects the forward edge of the sheet until the detecting unit detects the rear edge, the sheet is decelerated from a first conveying speed to a second conveying speed. After the detecting unit detects the rear edge of the sheet, the conveying of the sheet is stopped and punching processing to the sheet is executed when the conveying is stopped. | 12-18-2008 |
20080308989 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A sheet processing apparatus includes a hole punching section arranged orthogonally to a conveying path of a sheet, a moving mechanism which moves the hole punching section along a direction orthogonal to the conveying path, a detection unit which is arranged upstream from the hole punching section and which moves by being interlocked with the hole punching section and detects a lateral edge of the sheet conveyed thereto, and a control unit which controls the moving mechanism in accordance with the result of detection by the detection unit and varies the position of the hole punching section, thus controlling the punching processing position. The control unit causes the hole punching section to be moved in the direction to the retreat position along with the conveying of the sheet, causes the hole punching section to retreat by a prescribed quantity with reference to the result of detection by the detection unit, then causes the hole punching section to be moved in the opposite direction, and controls movement to the punching processing position in accordance with the result of detection by the detection unit. | 12-18-2008 |
20080309006 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A sheet processing apparatus includes a hole punching section arranged downstream from a skew detecting unit and orthogonally to a conveying path of a sheet, and a control unit configured to change the tilt angle of the hole punching section in accordance with each of the quantity of skew at the forward edge and the quantity of skew at the rear edge of the sheet, carry out skew correction at the forward edge within a first correction range w | 12-18-2008 |
20100230483 | SHEET PROCESSING APPARATUS AND SHEET PROCESSING METHOD - A sheet processing apparatus includes a hole punching section arranged orthogonally to a conveying path of a sheet, a moving mechanism which moves the hole punching section along a direction orthogonal to the conveying path, a detection unit which is arranged upstream from the hole punching section and which moves by being interlocked with the hole punching section and detects a lateral edge of the sheet conveyed thereto, and a control unit which controls the moving mechanism in accordance with the result of detection by the detection unit and varies the position of the hole punching section, thus controlling the punching processing position. The control unit causes the hole punching section to be moved in the direction to the retreat position along with the conveying of the sheet, causes the hole punching section to retreat by a prescribed quantity with reference to the result of detection by the detection unit, then causes the hole punching section to be moved in the opposite direction, and controls movement to the punching processing position in accordance with the result of detection by the detection unit. | 09-16-2010 |