摘要:
PROBLEM TO BE SOLVED: To provide a sheet feeder and an image formation apparatus of an inclined surface separation type capable of exhibiting a stable separation feed performance whether a sheet is thin and low in rigidity or high in rigidity.SOLUTION: A sheet feeder 1 includes: a feed tray 2 loading sheets S thereon; a feed roller 6 contacting an uppermost sheet Sa on the feed tray 2, and feeding the sheet in a sheet feed direction D; and a pair of intermediate transport rollers 23 receiving the fed sheets S, and transporting the sheets S in a sheet transport direction E. The sheet feeder 1 further includes: a fixed inclined surface portion 10 having a separation inclined surface 10a that inclines downstream in the sheet feed direction as being closer to the pair of intermediate transport rollers 23 so as to abut on the sheets S fed by the feed roller 6 and to separate the sheets one by one; and a sheet separation member 3 and an opposite member 5 having separation nip portions n in which the sheets S passing through the separation inclined surface 10a are held between the sheet separation member 3 and the opposite member 5 and separated one by one.
摘要:
PROBLEM TO BE SOLVED: To prevent a paper sheet from being caught on a pair of right and left side fence plates.SOLUTION: A paper sheet classification device includes at least: a pair of side fence plates 31, 32 for regulating both side end parts in the width direction of a paper sheet P loaded on a paper cradle 21; an offset guide plate 52 for regulating the trailing end in the discharge direction of the paper sheet P loaded on the paper cradle 21; and an end fence plate 82 for regulating the leading end. when the offset guide plate 52 and the end fence plate 82 are respectively offset corresponding to first and second paper loading positions set on the paper cradle 21, a control part 110 temporarily opens the pair of side fence plates 31, 32 to separate from both side ends in the width direction of the paper sheet P after the end of paper sheet classification on the first and second paper loading positions, respectively, and after that, temporarily lowers the paper cradle 21 to offset the offset guide plate 52 and the end fence plate 82. The control part again closes the pair of side fence plates 31, 32 after lifting the paper cradle 21.
摘要:
A sheet feeder, including: a sheet holding portion (20); a sheet supply portion (29); an inclined member (24) having an inclined surface (26) and configured to guide each sheet in a sheet feed direction (104); and separation protrusions (51; 51, 55, 56) which are provided on the inclined member, each of which protrudes from the inclined surface such that a distal end (52) thereof is located more downstream in the sheet feed direction than a proximal end (53) thereof, wherein each separation protrusion has a contact surface (51a) and said each sheet comes into contact with one or more contact surfaces of the separation protrusions, and wherein each separation protrusion protrudes from the inclined surface such that the distal end of one of the separation protrusions is located more downstream in the sheet feed direction than the proximal end of another of the separation protrusions that is located immediately downstream of the one of the separation protrusions in the sheet feed direction.
摘要:
PROBLEM TO BE SOLVED: To provide a sheet feeding device that can reduce size at lower cost in comparison with a sheet feeding device used for a conventional apparatus, and further has good setting properties of bundle of sheets.SOLUTION: The sheet feeding device includes a movable wall 6 which is tiltable to regulate the leading edges of sheets stacked. When a sheet feed roller 5 is operated to perform a sheet feeding operation, a loop is formed in the uppermost sheet Sa. After formation of the loop, the movable wall 6 is moved to a regulation release position to remove the loop formed in the uppermost sheet Sa. After removal of the loop, the movable wall 6 is returned to a regulation position to raise the leading end of the uppermost sheet Sa so as to separate the uppermost sheet from the second and subsequent sheets.
摘要:
PROBLEM TO BE SOLVED: To provide a medium-feeding device which is designed to deal with scratches and spots on a surface of a medium to be feeded by a separation means.SOLUTION: The medium feeding device includes a second separation means 17, arranged at a downstream side from a first separation means 14, capable of switching between a state in which a delivered medium P to be feeded is compressed and a state in which the medium P is uncompressed, a contact part 28, arranged at a downstream side from the second separation means and capable of switching between a state of projecting to a feeding route R and a state of not projecting, for limiting movement to the downstream side by contacting with the tip end of a medium P2 to be feeded which is separated by the second separation means 17 in the projecting state. A first separation mode for separating by utilizing the first separation means 14, the second separation means 17 and the contact part 28 and a second separation mode for separating by the first separation means 14 without using the second separation means 17 and the contact part 28 are arranged for the medium feeding device.