Abstract: A sheet conveying device includes a separator to separate a sheet from sheets. The separator includes a separation conveyor; a separation resistance member to press against the separation conveyor via the sheet; a resistance-member holder; a biasing member to contact and bias the resistance-member holder to press the separation resistance member toward the separation conveyor, the resistance-member holder to rotate about a resistance-member rotary shaft to separate from the biasing member in detaching from an apparatus body; and a biasing-member holder configured to rotate about a biasing-member rotary shaft to more incline the biasing member in a state, in which the biasing member is spaced apart from the resistance-member holder, in a moving direction of the resistance-member holder to detach from the apparatus body than the biasing member in a biasing state in which the biasing member biases the resistance-member holder in contact with the resistance-member holder.

Abstract: An image reading device includes a plurality of conveyance rollers to convey a sheet, a motor to drive the plurality of conveyance rollers, an image reading unit to read an image of the sheet, a control device to perform a stop control that stops the sheet in a course of a conveyance path, and a clutch to transmit a driving force of the motor. A first conveyance roller group includes at least one of the plurality of conveyance rollers upstream from a leading end of the sheet stopped by the stop control in a conveyance direction, to which the driving force is transmitted via the clutch. A second conveyance roller group includes at least one of the plurality of conveyance rollers downstream from the leading end of the sheet stopped by the stop control in the conveyance direction, to which the driving force is transmitted without the clutch.

Abstract: An image reading device includes a plurality of conveyance rollers to convey a sheet, a motor to drive the plurality of conveyance rollers, an image reading unit to read an image of the sheet, a control device to perform a stop control that stops the sheet in a course of a conveyance path, and a clutch to transmit a driving force of the motor. A first conveyance roller group includes at least one of the plurality of conveyance rollers upstream from a leading end of the sheet stopped by the stop control in a conveyance direction, to which the driving force is transmitted via the clutch. A second conveyance roller group includes at least one of the plurality of conveyance rollers downstream from the leading end of the sheet stopped by the stop control in the conveyance direction, to which the driving force is transmitted without the clutch.

Abstract: A reading device includes a feeder, a reading unit, and circuitry. The feeder feeds a document. The reading unit reads the document fed by the feeder. The circuitry acquires image data of the document read by the reading unit, in a mode selected in accordance with a predetermined selection condition from a plurality of modes that includes a first mode for acquiring image data including a document area of the document and an outside area other than the document area and a second mode for acquiring image data of an area not including the outside area.

Abstract: A sheet conveying device includes a separator to separate a sheet from sheets. The separator includes a separation conveyor; a separation resistance member to press against the separation conveyor via the sheet; a resistance-member holder; a biasing member to contact and bias the resistance-member holder to press the separation resistance member toward the separation conveyor, the resistance-member holder to rotate about a resistance-member rotary shaft to separate from the biasing member in detaching from an apparatus body; and a biasing-member holder configured to rotate about a biasing-member rotary shaft to more incline the biasing member in a state, in which the biasing member is spaced apart from the resistance-member holder, in a moving direction of the resistance-member holder to detach from the apparatus body than the biasing member in a biasing state in which the biasing member biases the resistance-member holder in contact with the resistance-member holder.

Abstract: A document feeder, which may be incorporated in an image forming apparatus, includes a sheet conveying guide, at least one recess, a frame, and at least one protrusion. The sheet conveying guide is disposed facing an exposure glass on an apparatus body and guides an original document passing over the exposure glass when the document feeder is closed to the apparatus body. The recess is disposed on the apparatus body at both ends of the exposure glass in a lateral direction orthogonal to a document conveying direction. The frame is openably closable about one end side of the apparatus body in the lateral direction and vertically movably holds the sheet conveying guide. The protrusion is disposed on the frame facing the recess. The sheet conveying guide and the frame are secured to each other while the recess and the protrusion are engaged with each other in the closed state.

Abstract: A sheet conveying device includes a sheet container, a separation feeder, a plurality of conveyance drivers, a multifeed detector, a sheet detector, and a conveyance controller. The conveyance drivers are driven to convey a sheet to a conveyance completion position on a sheet conveyance path. The multifeed detector detects occurrence of a multifeed on the conveyance path. The sheet detector detects presence or absence of the sheet at a sheet detection point on the conveyance path. The conveyance controller controls the conveyance drivers to be continuously driven until a preceding sheet preceding multifed sheets is conveyed to the conveyance completion position after the multifeed detector detects the occurrence of the multifeed. The conveyance controller controls the conveyance drivers to stop in a period in which at least one of the multifed sheets is present at the sheet detection point after the preceding sheet is conveyed to the conveyance completion position.

Abstract: An image reading device, which may be incorporated in an image forming apparatus, includes an image reader, a color reference body, a biasing body, a reading gap forming device, and a driving device. The image reader reads an image of an original document. The color reference body has a white reference face to position facing the image reader within a predetermined range in a document width direction. The biasing body biases the color reference body to the image reader. The reading gap forming device forms a reading gap while receiving a biasing force from the biasing body on the outside of the predetermined range. The driving device has a force drive transmission body engaged with a center of the color reference body in the document width direction and drives the color reference body in the document width direction at the center via the force drive transmission body.

Abstract: An automatic document feeding device includes a document tray, an ejection tray, and a document takeout port. The document tray is rotatably attached to a rotation fulcrum provided in a body of the automatic document feeder, to load a document. The document tray includes a first positioner and a second positioner. The first positioner is disposed at a front side of the body in a direction perpendicular to a document feed direction. The second positioner is disposed at a depth side of the body in the direction perpendicular to the document feed direction. The first positioner is disposed upstream from the rotation fulcrum in the document feed direction and above the document takeout port in the body. An upper portion and side surfaces of the first positioner in the direction perpendicular to the document feed direction are surrounded by the document tray in a closed state of the document tray.

Abstract: A sheet conveying device includes a sheet container, a separation feeder, a plurality of conveyance drivers, a multifeed detector, a sheet detector, and a conveyance controller. The conveyance drivers are driven to convey a sheet to a conveyance completion position on a sheet conveyance path. The multifeed detector detects occurrence of a multifeed on the conveyance path. The sheet detector detects presence or absence of the sheet at a sheet detection point on the conveyance path. The conveyance controller controls the conveyance drivers to be continuously driven until a preceding sheet preceding multifed sheets is conveyed to the conveyance completion position after the multifeed detector detects the occurrence of the multifeed. The conveyance controller controls the conveyance drivers to stop in a period in which at least one of the multifed sheets is present at the sheet detection point after the preceding sheet is conveyed to the conveyance completion position.

Abstract: An automatic document feeding device includes a conveyance unit, an image reading unit, a color reference member, a moving assembly, and a drive source. The drive source includes a rotation output shaft to drive the conveyance unit and the moving assembly. The drive source changes the rotation output shaft from a forward rotation direction to a reverse rotation direction to reversely rotate the rotation output shaft to a set reverse rotation angle set in advance, according to a condition of conveyance of the document. In a rotation transmission route from the rotation output shaft to the moving assembly, the movement regulator is disposed in a first reverse rotation drive region from when a rotation direction of the rotation output shaft is changed to the reverse rotation direction to when a rotation angle of the rotation output shaft after the change in the reverse rotation direction reaches the set reverse rotation angle.

Abstract: A document feeder, which may be incorporated in an image forming apparatus, includes a sheet conveying guide, at least one recess, a frame, and at least one protrusion. The sheet conveying guide is disposed facing an exposure glass on an apparatus body and guides an original document passing over the exposure glass when the document feeder is closed to the apparatus body. The recess is disposed on the apparatus body at both ends of the exposure glass in a lateral direction orthogonal to a document conveying direction. The frame is openably closable about one end side of the apparatus body in the lateral direction and vertically movably holds the sheet conveying guide. The protrusion is disposed on the frame facing the recess. The sheet conveying guide and the frame are secured to each other while the recess and the protrusion are engaged with each other in the closed state.

Abstract: An image reading device, which may be incorporated in an image forming apparatus, includes an image reader, a color reference body, a biasing body, a reading gap forming device, and a driving device. The image reader reads an image of an original document. The color reference body has a white reference face to position facing the image reader within a predetermined range in a document width direction. The biasing body biases the color reference body to the image reader. The reading gap forming device forms a reading gap while receiving a biasing force from the biasing body on the outside of the predetermined range. The driving device has a force drive transmission body engaged with a center of the color reference body in the document width direction and drives the color reference body in the document width direction at the center via the force drive transmission body.

Abstract: 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.

Abstract: 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.

Abstract: An image scanner, which is incorporated in an image forming apparatus, includes a stationary-document reading section, a moving-document reading section disposed at an angle to the stationary-document reading section, a reader movable between the stationary-document reading section and the moving-document reading section, and a reading element movable to different angles while contacting the stationary-document reading section and the moving-document reading section to selectively read a document placed on the stationary-document reading section and a document moving over the moving-document reading section. The image scanner further includes any one of position detector, a combination of a moving device and at least one position sensor, and a combination of at least one pressing member, a framework, and an angle changer.

Abstract: An automatic document feeding device includes a document tray, an ejection tray, and a document takeout port. The document tray is rotatably attached to a rotation fulcrum provided in a body of the automatic document feeder, to load a document. The document tray includes a first positioner and a second positioner. The first positioner is disposed at a front side of the body in a direction perpendicular to a document feed direction. The second positioner is disposed at a depth side of the body in the direction perpendicular to the document feed direction. The first positioner is disposed upstream from the rotation fulcrum in the document feed direction and above the document takeout port in the body. An upper portion and side surfaces of the first positioner in the direction perpendicular to the document feed direction are surrounded by the document tray in a closed state of the document tray.

Abstract: An automatic document feeding device includes a conveyance unit, an image reading unit, a color reference member, a moving assembly, and a drive source. The conveyance unit conveys a document to an image reading position. The image reading unit reads an image of the document. The color reference member faces the image reading unit and includes a white reference face to correct shading. The moving assembly relatively moves the image reading unit and the color reference member. The movement regulator regulates a relative movement of the image reading unit and the color reference member by the moving assembly. The drive source includes a common rotation output shaft to drive the conveyance unit and the moving assembly. The drive source changes the rotation output shaft from a forward rotation direction to a reverse rotation direction to reversely rotate the rotation output shaft to a set reverse rotation angle set in advance, according to a condition of conveyance of the document by the conveyance unit.

Abstract: An image scanner, which is incorporated in an image forming apparatus, includes a stationary-document reading section, a moving-document reading section disposed at an angle to the stationary-document reading section, a reader movable between the stationary-document reading section and the moving-document reading section, and a reading element movable to different angles while contacting the stationary-document reading section and the moving-document reading section to selectively read a document placed on the stationary-document reading section and a document moving over the moving-document reading section. The image scanner further includes any one of position detector, a combination of a moving device and at least one position sensor, and a combination of at least one pressing member, a framework, and an angle changer.

Abstract: 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.