A sheet feeding apparatus includes a stacking portion, a feed member provided above the stacking portion and configured to feed an uppermost sheet among the sheets stacked on the stacking portion, and a trailing-end regulating member movable in the sheet feeding direction and configured to regulate a position of a trailing end of the sheets stacked on the stacking portion in the sheet feeding direction. The trailing-end regulating member includes a support portion configured to support a lower surface of the sheets stacked on the stacking portion. The support portion has a projecting shape in which a center portion of the support portion in a sheet width direction projects upward as compared with end portions of the support portion in the sheet width direction.

A medium conveying apparatus includes a medium tray, a feed roller, an upper guide, a movement sensor including an arm movably provided by the fed medium on the upper guide and on an upstream side of the feed roller, to generate a movement amount signal corresponding to a movement amount of the arm, a medium sensor to detect a presence of the medium at a predetermined position of the medium tray, a processor to determine whether a feeding abnormality of the medium has occurred based on the movement amount signal, detect a size of the medium placed on the medium tray based on a detection result by the medium sensor, and stop feeding of the medium by the feed roller when the processor determines that the feeding abnormality of the media has occurred and the detected size of the media is equal to or less than a predetermined size.

A paper blocking device includes a pick roller, a cover plate, a paper blocking component, a driving mechanism, a gear mechanism and a motor. The cover plate has a pick roller window penetrated the cover plate. The pick roller is positioned in the pick roller window. The paper blocking component is coupled to the cover plate. The driving mechanism has a driving shaft and a cam being connected to the driving shaft. The cam is connected to the paper blocking component. The gear mechanism is connected to the driving shaft. The motor is connected to the gear mechanism. As described above, the paper blocking device can block papers and align the leading edges of papers.

A paper blocking device includes a pick roller, a cover plate, a paper blocking component, a driving mechanism, a gear mechanism and a motor. The cover plate has a pick roller window penetrated the cover plate. The pick roller is positioned in the pick roller window. The paper blocking component is coupled to the cover plate. The driving mechanism has a driving shaft and a cam being connected to the driving shaft. The cam is connected to the paper blocking component. The gear mechanism is connected to the driving shaft. The motor is connected to the gear mechanism. As described above, the paper blocking device can block papers and align the leading edges of papers.

A sheet feeding apparatus is disclosed. This sheet feeding apparatus includes: a feeding roller configured to feed sheets; a conveying roller configured to convey the sheets fed by the feeding roller; a separation roller configured to form a nip portion by being pressed on the conveying roller, and to separate one by one the sheets at the nip portion, the sheets being conveyed by the conveying roller; a guide configured to guide the sheets fed by the feeding roller to the nip portion; and a holder configured to hold the separation roller and the guide, and to be detachably attachable to the sheet feeding apparatus. The guide adheres to the holder and the separation roller is replaceable on the holder that has been removed from the sheet feeding apparatus.

A sheet feeding apparatus is disclosed. This sheet feeding apparatus includes: a feeding roller configured to feed sheets; a conveying roller configured to convey the sheets fed by the feeding roller; a separation roller configured to form a nip portion by being pressed on the conveying roller, and to separate one by one the sheets at the nip portion, the sheets being conveyed by the conveying roller; a guide configured to guide the sheets fed by the feeding roller to the nip portion; and a holder configured to hold the separation roller and the guide, and to be detachably attachable to the sheet feeding apparatus. The guide adheres to the holder and the separation roller is replaceable on the holder that has been removed from the sheet feeding apparatus.

A sheet transfer guide, which is disposed along a sheet conveyance passage through which a sheet passes, provided to guide the sheet, and is included in an image forming apparatus and an image reading device, includes a base material, a coat layer formed on the base material and having a surface roughness smaller than a surface roughness of the base material, and a guide face to which the sheet contacts. The coat layer is formed on the guide face.

A sheet transfer guide, which is disposed along a sheet conveyance passage through which a sheet passes, provided to guide the sheet, and is included in an image forming apparatus and an image reading device, includes a base material, a coat layer formed on the base material and having a surface roughness smaller than a surface roughness of the base material, and a guide face to which the sheet contacts. The coat layer is formed on the guide face.

The invention relates to a feeder device (1) for feeding mailpieces (2) to a postal sorting conveyor (3), the feeder device comprising an unstacker head (4) designed to put the mailpieces in series and on edge on the sorting conveyor, an unstacker plate (5) designed to unstack the mailpieces one-by-one towards the unstacker head, and a mailpiece feed conveyor (6) designed to convey the mailpieces in a stack and on edge against the unstacker plate. The unstacker plate comprises a stationary portion (5a) that extends from the unstacker head, and a moving portion (5b) that extends the stationary portion, said moving portion being mounted to pivot from the stationary portion between a first position in which the stationary portion and the moving portion are aligned with each other, and a second position in which the stationary portion and the moving portion are angularly offset relative to each other.

The invention relates to a feeder device (1) for feeding mailpieces (2) to a postal sorting conveyor (3), the feeder device comprising an unstacker head (4) designed to put the mailpieces in series and on edge on the sorting conveyor, an unstacker plate (5) designed to unstack the mailpieces one-by-one towards the unstacker head, and a mailpiece feed conveyor (6) designed to convey the mailpieces in a stack and on edge against the unstacker plate. The unstacker plate comprises a stationary portion (5a) that extends from the unstacker head, and a moving portion (5b) that extends the stationary portion, said moving portion being mounted to pivot from the stationary portion between a first position in which the stationary portion and the moving portion are aligned with each other, and a second position in which the stationary portion and the moving portion are angularly offset relative to each other.