Patent application number | Description | Published |
20110140341 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A sheet feeding apparatus includes a sheet accommodating unit which is detachably attached to an apparatus main body and configured to accommodate sheets, a sheet stacking unit which is provided in the sheet accommodating unit and can move while supporting the sheet, a sheet feeding unit configured to feed the sheet stacked on the sheet stacking unit, and a lift unit configured to move the sheet stacking unit toward the sheet feeding unit, wherein, before feeding of the sheet stacked on the sheet stacking unit by the sheet feeding unit, the lift unit increases and then reduces press contact force between the sheet stacked on the sheet stacking unit and the sheet feeding unit. | 06-16-2011 |
20120061908 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface. | 03-15-2012 |
20130001861 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A sheet feeding apparatus includes a sheet accommodating unit which is detachably attached to an apparatus main body and configured to accommodate sheets, a sheet stacking unit which is provided in the sheet accommodating unit and can move while supporting the sheet, a sheet feeding unit configured to feed the sheet stacked on the sheet stacking unit, and a lift unit configured to move the sheet stacking unit toward the sheet feeding unit, wherein, before feeding of the sheet stacked on the sheet stacking unit by the sheet feeding unit, the lift unit increases and then reduces press contact force between the sheet stacked on the sheet stacking unit and the sheet feeding unit. | 01-03-2013 |
20130043644 | SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS - A movable side regulating plate is provided on a frame body. The movable side regulating plate regulates side edges in a width direction of sheets stacked on a sheet stacking plate, and is movable in the width direction. A sheet pressing portion configured to press the side edges of the sheets and press the sheets onto a stationary side regulating plate is provided on the movable side regulating plate. The sheet pressing portion has a relief shape for reducing a pressing force exerted on the sheets when an amount of the sheets stacked on the sheet stacking plate becomes equal to or smaller than a predetermined amount. The relief shape is formed so that a downstream edge in a sheet feeding direction of a lower surface is located higher than an upstream edge in the sheet feeding direction of an upper surface. | 02-21-2013 |
20130084106 | DEVELOPER CONVEYANCE APPARATUS AND PROCESS CARTRIDGE - A developer conveyance apparatus for an image forming apparatus includes a developer storage portion configured to store developer, a developer conveyance portion arranged inside the developer storage portion and configured to convey the developer through rotation, a drive input portion configured to input a drive force to the developer conveyance portion, and a clutch arranged inside the developer storage portion and configured to transmit the drive force from the drive input portion to the developer conveyance portion, the clutch stopping or decelerating a rotation of the developer conveyance portion when a requisite torque for rotating the developer conveyance portion exceeds a predetermined magnitude, wherein the clutch is arranged inside the developer storage portion and includes at least one clutch side conveyance portion which, when receiving the drive force from the drive input portion, conveys the developer in a developer conveyance direction in which the developer conveyance portion conveys the developer. | 04-04-2013 |
20130121721 | DEVELOPER CONVEYANCE APPARATUS DEVELOPING APPARATUS AND PROCESS CARTRIDGE - A developer conveyance apparatus includes a developer storage portion storing developer, an opening for supplying developer from the developer storage portion, a sealing member configured to seal the opening, a removing member configured to remove the sealing member, and a conveyance portion arranged inside the developer storage portion and configured to convey the developer in a predetermined developer conveyance direction, wherein the conveyance portion can move between a first position and a second position on the upstream side with respect to the first position in the developer conveyance direction, and wherein when the conveyance portion receives a force not smaller than a predetermined magnitude from the developer with the conveyance portion rotating while the removing member is removing the sealing member from the opening, the conveyance portion moves from the first position to the second position. | 05-16-2013 |
20140023402 | DEVELOPER STORAGE CONTAINER AND MANUFACTURING METHOD THEREOF - In order to achieve an improvement in terms of workability when mounting a developer agitation member and a drive transmission member to a container portion storing developer, there is provided a method of mounting a developer storage container in which, when mounting a developer agitation member to a developer storage portion, a drive transmission member is inserted for connection from an end portion of the developer agitation member, the developer agitation member exhibits a first phase and a second phase. The first phase allows connection of the developer agitation member and the drive transmission member in the insertion path of the drive transmission member, whereas the second phase does not allow connection of the developer agitation member and the drive transmission member in the insertion path of a support member. | 01-23-2014 |
20140328607 | DEVELOPER CONVEYANCE APPARATUS AND PROCESS CARTRIDGE - A developer conveyance apparatus for an image forming apparatus includes a developer storage portion configured to store developer, a developer conveyance portion arranged inside the developer storage portion and configured to convey the developer through rotation, a drive input portion configured to input a drive force to the developer conveyance portion, and a clutch arranged inside the developer storage portion and configured to transmit the drive force from the drive input portion to the developer conveyance portion, the clutch stopping or decelerating a rotation of the developer conveyance portion when a requisite torque for rotating the developer conveyance portion exceeds a predetermined magnitude, wherein the clutch is arranged inside the developer storage portion and includes at least one clutch side conveyance portion which, when receiving the drive force from the drive input portion, conveys the developer in a developer conveyance direction in which the developer conveyance portion conveys the developer. | 11-06-2014 |