摘要:
A sheet feeding device includes a sheet carrying unit and an attraction separation and conveyance device. The sheet carrying unit is configured to carry thereon a sheet stack. The attraction separation and conveyance device is configured to electrostatically attract the uppermost sheet of the sheet stack and separate and convey the uppermost sheet from the sheet stack, and is placed between the upstream end and the central position in a sheet conveying direction of the sheet stack located at a sheet carrying position and having a minimum sheet size compatible with the sheet feeding device.
摘要:
A medium feeder is operable to feed a target medium to a liquid ejecting section in which liquid is ejected toward the target medium. A feeding roller is adapted to come in contact with the target medium, thereby feeding the target medium along a feeding path in a first direction. A supporter is opposing the feeding roller and having a supporting face adapted to support the target medium. A releaser is movable between a first position entering the feeding path and a second position retreating from the feeding path, A driver is operable to place the releaser in the second position when a feeding operation of the feeding roller begins, and to place the releaser in the first position when a leading end of the target medium reaches the liquid ejecting section. An edge guide is provided on the supporter and has a guiding face adapted to come in contact with a side edge of the target medium at least when the releaser is placed in the second position. The releaser is adapted to push up the target medium at the first position thereof, so that the target medium is separated from the supporting face. The edge guide is formed with a concave portion adapted to oppose the side edge of the target medium pushed up by the releaser.
摘要:
A medium feeding apparatus includes: a pivot unit, supporting a medium and pivoting to cause the medium to come in contact with and to separate from a feeding unit; a first guide unit, guiding one side end of the medium supported on the pivot unit; a second guide unit, guiding the other side end of the medium; a first moving unit, moving the first guide unit to come in contact with and to separate from the one side end of the medium in conjunction with the pivoting motion of the pivot unit; and a second moving unit, moving the second guide unit to come in contact with and to separate from the other side end of the fed medium in conjunction with the movement of the first guide unit.
摘要:
A medium feeder is operable to feed a target medium to a liquid ejecting section in which liquid is ejected toward the target medium. A feeding roller is adapted to come in contact with the target medium, thereby feeding the target medium along a feeding path in a first direction. A supporter is opposing the feeding roller and having a supporting face adapted to support the target medium. A releaser is movable between a first position entering the feeding path and a second position retreating from the feeding path, . A driver is operable to place the releaser in the second position when a feeding operation of the feeding roller begins, and to place the releaser in the first position when a leading end of the target medium reaches the liquid ejecting section. An edge guide is provided on the supporter and has a guiding face adapted to come in contact with a side edge of the target medium at least when the releaser is placed in the second position. The releaser is adapted to push up the target medium at the first position thereof, so that the target medium is separated from the supporting face. The edge guide is formed with a concave portion adapted to oppose the side edge of the target medium pushed up by the releaser.
摘要:
A sheet feeding apparatus for separating and feeding a plurality of sheets stacked on a sheet stacking portion one by one includes feeding means for feeding the plurality of sheets stacked on the sheet stacking portion, separation means for separating the sheets one by one by contacting to the sheets, returning means for returning the sheets to the sheet stacking portion, and separation force switching means for switching between generation and release of a separation force of the separation means. During a feeding operation, the feeding operation is switchable between a separating mode in which the separation force for a sheet is generated by the separation means and a conveying mode in which the separation force is released.
摘要:
A paper feed unit includes a hopper on which sheets are stacked and which is turned around a rotation shaft. The hopper is turned to move apart from or move to a paper feed roller. The paper feed unit has three modes: a large release mode in which the hopper is turned to be most apart from the paper feed roller, a non-release mode in which the printing sheet is abutted against the paper feed roller, and a small release mode in which the printing sheet is slightly separated from the paper feed roller, and is at a medium level between the above two modes. When a paper feeding job is still present, a state that the uppermost printing sheet is slightly separated from the paper feed roller is retained by the small release mode, whereby a swing range of the hopper is minimized.
摘要:
A supply device for a machine working cardboard sheets. At least one conveying unit for the conveyance one by one of the sheets. A hold-down stop for preventing conveyance of a pile of the sheets above the conveying unit while permitting conveyance of the bottom sheet. A plurality of rising units at the conveying unit, the raising units being alternatively moveable by pivoting between an upraised position above the upper level of the conveying unit, and a lowered position at the highest aligned with that upper level. Each rising unit is connected to a programmable control unit in order to provide a single command respectively for each one of the rising units. An adjustable height wear surface shoe on each rising unit.
摘要:
A sheet feeding apparatus for separating and feeding a plurality of sheets stacked on a sheet stacking portion one by one includes feeding means for feeding the plurality of sheets stacked on the sheet stacking portion, separation means for separating the sheets one by one by contacting to the sheets, returning means for returning the sheets to the sheet stacking portion, and separation force switching means for switching between generation and release of a separation force of the separation means. During a feeding operation, the feeding operation is switchable between a separating mode in which the separation force for a sheet is generated by the separation means and a conveying mode in which the separation force is released.
摘要:
A sheet feeding device of the present invention includes a feeding mechanism including a belt and a reverse roller, and circular collars or similar spacing members adjoining the belt for spacing the reverse roller and belt. When a single sheet is conveyed from a nip between the belt and the reverse roller to a preselected position downstream of the nip in the direction of sheet feed, the spacing member spaces the belt and reverse roller with the drive of only the belt or the drive of both of the belt and reverse roller being interrupted.
摘要:
A paper feeding roller is provided in the vicinity of a first widthwise end of a transporting path extending to a recording apparatus. A hopper, for stacking a plurality of sheets of paper, includes an aligning face, on which leading ends of the stacked sheets are abutted to be aligned with each other. The aligning face is narrowed from a first side end thereof to a second side end thereof. Here, the first side end is in the vicinity of the first widthwise end of the transporting path, and the second side end is in the vicinity of a second widthwise end of the transporting path. The hopper includes a guide face provided on the first side end of the aligning face so as to extend parallel with the transporting path. The hopper includes a hopper member pivotably supported on the second side end of the aligning face in a cantilevered manner, so as to move on the aligning face such that distance change in accordance with the number of sheets stacked thereon in the first widthwise end side of the transporting path with respect to the paper feeding roller becomes larger than that in the second widthwise end side of the transporting path. A paper retainer is provided on a paper returner which is placed in the vicinity of an end portion of the hopper which faces the paper feeding roller. The paper retainer has a higher friction coefficient than the paper returner.