Patent application number | Description | Published |
20110285078 | Automatic sheet feeder - An automatic sheet feeder includes a sheet setting unit to set a sheet to be fed by a sheet feeding member, an openably closable cover rotatably disposed over an upper portion of the sheet setting unit, a sheet detector rotatably supported on the cover to detect whether or not a sheet is set on the sheet setting unit and including a detection member, a rotary shaft about which the detection member rotates, and a sensor to detect the setting of the sheet according to a movement of the detection member, and a rotating member to cause the detection member to rotate in a direction such that an angle between a line extending in a longitudinal direction of the detection member and a surface of the sheet set on the sheet setting unit decreases as the cover rotates from an open position to a closed position. | 11-24-2011 |
20120104676 | Automatic document feeder and image forming apparatus including the same - An automatic document feeder includes an upstream conveyance roller pair disposed upstream of an image reader including an upstream driving roller and an upstream driven roller; a downstream conveyance roller pair including a downstream driving roller and a downstream driven roller; an upstream auxiliary roller pair including upstream auxiliary rollers disposed coaxially on a shaft of the upstream driving roller and of the upstream driven roller, respectively, each formed of an elastic member and having a diameter greater than that of the adjacent upstream driving roller and of the adjacent upstream driven roller, respectively; and a downstream auxiliary roller pair including downstream auxiliary rollers each disposed coaxially on a shaft of the downstream driving roller and of the downstream driven roller, formed of a low-hardness elastic member and having a diameter greater than that of the adjacent downstream driving roller and of the adjacent downstream driven roller. | 05-03-2012 |
20130222826 | SHEET CONVEYANCE UNIT, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS - A sheet conveyance unit including a sheet tray on which a stack of sheets is placed, a sheet feed member to feed sheets from the stack of sheets, a separation/feed unit to separate a topmost sheet from the rest of sheets fed by the sheet feed member and feed the topmost sheet to a predetermined position, and a pre-separation unit disposed between the sheet tray and the separation/feed unit. The pre-separation unit includes a downward sloped portion to guide a leading edge of each sheet diagonally downward, and an upward sloped portion provided downstream from the downward sloped portion in a conveyance direction of the sheets to guide the leading edge of each sheet diagonally upward. Both ends of the upward sloped portion in a lateral direction are sloped upward more gently than the center of the upward sloped portion. | 08-29-2013 |
20130335790 | IMAGE SCANNER AND IMAGE FORMING APPARATUS INCORPORATING SAME - An image scanner includes a stationary original plate on which a stationary original is placed and a moving original plate, over which a moving original is conveyed, aligned with the stationary original plate in a sub-scanning direction and tilted relative to the stationary original plate by a given angle. A reader is movable in the sub-scanning direction between a stationary original reading span disposed opposite the stationary original via the stationary original plate to read an image on the stationary original and a moving original reading position disposed opposite the moving original via the moving original plate to read an image on the moving original. The reader pressingly contacts the stationary original plate and the moving original plate as the reader moves in the sub-scanning direction. | 12-19-2013 |
20140211279 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS - An image reading device, which can be included in an image forming apparatus, includes an image pickup device, a transparent member, a traveling body, and a housing. The traveling body includes a light source to emit light and guides the light reflected from a surface of the document to the image pickup device while moving in a sub scanning direction along the document surface on the transparent member. The housing accommodates the image pickup device and the traveling body, and includes a base member including a rectangular bottom surface and a side surface, and a rail member including a rail surface and a first vertical surface. The rail member further includes a fixing part that is a surface to be fixed to the bottom surface of the base member and to extend from one end of the rail member in the sub scanning direction to the other end. | 07-31-2014 |
20140347711 | IMAGE SCANNER AND IMAGE FORMING APPARATUS INCORPORATING SAME - An image scanner includes a stationary original plate on which a stationary original is placed and a moving original plate, over which a moving original is conveyed, aligned with the stationary original plate in a sub-scanning direction and tilted relative to the stationary original plate by a given angle. A reader is movable in the sub-scanning direction between a stationary original reading span disposed opposite the stationary original via the stationary original plate to read an image on the stationary original and a moving original reading position disposed opposite the moving original via the moving original plate to read an image on the moving original. The reader pressingly contacts the stationary original plate and the moving original plate as the reader moves in the sub-scanning direction. | 11-27-2014 |
20150341515 | IMAGE SCANNER AND IMAGE FORMING APPARATUS - An image scanner includes a primary conveyance roller to convey an original bearing an image in an original conveyance direction and an image reader disposed downstream from the primary conveyance roller in the original conveyance direction to read the image on the original. A moving original reading portion is disposed opposite the image reader. The image reader reads the image on the original through the moving original reading portion while the original moves over the moving original reading portion. A slope is disposed downstream from the moving original reading portion in the original conveyance direction. A spacer is interposed between the moving original reading portion and the slope in the original conveyance direction. A secondary conveyance roller has an original contact point to come into contact with the original. The original contact point is disposed opposite the spacer with an interval therebetween. | 11-26-2015 |
20160127590 | SHEET CONVEYANCE DEVICE - A sheet conveyance device includes a sheet mount on which a standard-sized sheet is mountable; a first conveyor to bring in the sheet from the mount, convey the sheet through a reverse conveyance path such that the sheet passes through a specific operation position, and eject the sheet into a sheet ejection area outside the mount; and a second conveyor to bring in a hard sheet with a higher bending rigidity than the sheet from one end of a straight conveyance path along a plane passing through the specific position of the reverse path, and eject the hard sheet conveyed along the straight path from another end of the straight path at a sheet ejection area side. The mount includes a hard sheet ejection port to let through at least a leading edge portion of the hard sheet to be ejected from the second conveyor in a sheet ejection direction. | 05-05-2016 |