Patent application number | Description | Published |
20090152789 | Sheet creaser, sheet conveyer, sheet finisher, and image forming apparatus - In a sheet creaser, when a sheet is conveyed to a folding unit by a conveyer unit, the folding unit folds the sheet and a pressing unit presses the folded sheet by sliding in a direction substantially perpendicular to a sheet conveying direction. A switching unit switches the conveyer unit between a first position to convey the sheet and a second position unable to convey the sheet. A driving unit drives both the switching unit and the pressing unit. | 06-18-2009 |
20090200725 | Sheet creaser, sheet conveyer, sheet finisher, image forming apparatus, and sheet creasing method - A pressing unit includes a pressure roller that slides on the folded side while rotating, an elastic biasing unit that presses the pressure roller in a thickness direction of the stack of sheets, and a driving unit that slides the pressure roller in a direction substantially perpendicular to a conveying direction of the stack of sheets. A lifting unit, when the pressure roller slides to a first position, temporarily lifts up the pressure roller, and when lifted-up pressure roller slides to a second position, lifts the lifted-up pressure roller down onto the folded side. | 08-13-2009 |
20090206547 | Sheet conveying device, sheet punching device, sheet processing device, image forming apparatus, and method for determining mounting state of measuring unit - A sheet conveying device includes a conveying unit that conveys a sheet in a sheet conveying direction; a measuring unit that measures a position of a side edge of the sheet in a measurement area; a shielding unit having an end portion that is projected into the measurement area for shielding the sheet; a first determining unit that determines whether the shielding unit is detectable in the measurement area; and a second determining unit that determines whether the measuring unit has been mounted in the sheet conveying device based on a result obtained in the first determining unit. | 08-20-2009 |
20090258774 | Sheet creaser, sheet finisher, image forming apparatus, sheet folding method, and computer program product - In a sheet creaser, a sheet set is pushed between a pair of folding rollers to fold the sheet set. Then, a re-pressing roller re-presses the sheet set, which has been folded by the folding rollers, by rolling along the crease. Pressure applied on the sheet set by the folding rollers is released when the re-pressing roller re-presses the sheet set. | 10-15-2009 |
20090283961 | Sheet Stacking device, Drive control method, and computer program product - A sheet stacking unit that stacks sheets thereon is movable up and down. A lifting unit moves the sheet stacking unit up and down. A driving unit drives the lifting unit. A control unit controls a driving speed of the driving unit. A position detecting unit detects a position of the sheet stacking unit in an up-and-down direction. The control unit controls the driving speed according to the position of the sheet stacking unit detected by the position detecting unit. | 11-19-2009 |
20100148417 | Sheet aligning apparatus, sheet processing apparatus, and image forming apparatus - A sheet aligning apparatus includes an alignment surface formed in a planar shape and that presses an end of a sheet to move and align the sheet; and a holding unit that holds the end of the sheet at a position contacting the alignment surface in a state that a curled end of the sheet contacts the alignment surface and the sheet is thus pressed. | 06-17-2010 |