| Patent application number | Description | Published |
|---|
| 20080224385 | Feeding device and image forming apparatus - A sheet discharge roller has a contact portion in contact with a feed roller and a noncontact portion not in contact with the feed roller. The sheet discharge roller includes a kick-out unit having a projected portion and a recess portion on one end of the noncontact portion in the circumferential direction. A reverse roller also has a contact portion in contact with the feed roller and a noncontact portion not in contact with the feed roller. The reverse roller includes a large-diameter portion on its one end in a direction opposite to a direction of the kick-out unit. The large-diameter portion has a diameter larger than a diameter of the contact portion. | 09-18-2008 |
| 20090174135 | Sheet conveying apparatus and image forming apparatus - A sheet conveying apparatus includes a sheet containing unit that contains sheets; a sheet conveying unit that conveys the sheets; a separating unit that separates a single sheet from the sheets; a holding unit that holds the separating unit; and a vibration applying unit that applies a vibration to any one of the sheets conveyed by the sheet conveying unit and the separating unit before starting conveyance of the sheets. | 07-09-2009 |
| 20090295061 | Sheet discharge device and image forming apparatus - A sheet discharge device discharges a sheet to a sheet discharge tray. The sheet discharge device includes a rotary shaft, two inside drive rollers, two outside drive rollers, two inside driven rollers, two outside driven rollers, two end retainers, and two inside retainers. The drive rollers are rotatably attached to the rotary shaft. Each of the driven rollers opposes a corresponding one of the drive rollers to be driven by the drive roller. The end retainers and the inside retainers rotatably extend from the rotary shaft across a common tangent of the driven rollers and the drive rollers. The end retainers are longer than the inside rollers and constructed so as to rest on the stacked sheets. | 12-03-2009 |
| 20090302521 | Image forming apparatus, optional sheet feeder, and base plate member - A base plate is selectively attached to a lower surface of a main body of an image forming apparatus or to an optional sheet feeder attachable to the main body. | 12-10-2009 |
| 20090315250 | Sheet feeding device, image forming apparatus, and sheet feeding method - A sheet feeding device includes a first roller that draws a recording medium at a first position and feeds the recording medium; a friction pad that comes into contact with the first roller with a predetermined contact pressure at a second position that is close to and downstream of the first position in a conveying direction of the recording medium and nips the recording medium with the first roller to convey the recording medium in the conveying direction; and a second roller that comes into contact with the first roller at a third position that is close to and downstream of the second position in the conveying direction and nips the recording medium with the first roller. | 12-24-2009 |
| 20100059930 | Paper feeder and image forming device - A paper feeder includes a sheet container including a platen member on which sheet-like recording media is placed, the platen member having one end portion on an upstream side of a paper feed direction rotatably supported to a spindle, such that the other end portion on a downstream side of the paper feed direction is lifted, and a paper feed member which draws and feeds the sheet-like recording media, and the sheet container includes a stepped portion which presses down the downstream side of the paper feed direction of the platen member when inserting the sheet container in the direction opposite to the paper feed direction, and a sliding portion which maintains the pressing down. | 03-11-2010 |
| 20100314827 | Sheet transport mechanism and electrophotographic image forming apparatus incorporating same - A sheet transport mechanism that can be incorporated in an image forming apparatus includes a first sheet transport member, a second sheet transport member disposed downstream from the first sheet transport member in a sheet transport direction, a sheet transport path defined by and curved between the first and second sheet transport members and including a downstream section recessed from an upstream section in the sheet transport direction, and a contact member disposed at the downstream section and including a first contact portion to which the leading edge of a sheet contacts to move the contact member in a direction to recess from the sheet transport path and a second contact portion connected to the first contact portion to advance toward the sheet transport path at a position upstream from the first contact portion in the sheet transport direction to contact the surface of the sheet. | 12-16-2010 |
| 20110058873 | Conveyer and image forming apparatus including the same - A conveyer includes a first rotating body; a second rotating body pair; and an intermediate rotating body arranged between the first rotating body and the second rotating body pair. A curl of the recording medium is corrected by winding and bending the recording medium around and with the intermediate rotating body at a bent angle formed by a tangent line shared by the intermediate rotating body and the first rotating body, and a line on which such a tangent line of the intermediate rotating body is connected to a nip point of the second rotating body pair. The intermediate rotating body includes an escape mechanism that is capable of causing the intermediate rotating body to escape in a direction to increase the bent angle depending on the width of the recording medium. | 03-10-2011 |
