摘要:
A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.
摘要:
A printer includes a fixing device that fixes a toner image formed on a sheet and a sheet delivery roller pair for delivering the sheet on which the toner image is fixed by the fixing device onto a sheet delivery tray placed outside of a printer main body. The printer includes a supporting member that supports an upstream edge portion of the sheet in a delivery direction delivered from the sheet delivery roller pair so that the upstream edge portion does not fall down on the sheet delivery tray. The printer includes a blower unit that blows air along a lower surface of the sheet supported by the supporting member from the upstream edge portion of the sheet in the delivery direction toward a downstream edge portion of the sheet in the delivery direction.
摘要:
A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.
摘要:
A sheet conveying apparatus, including: a first conveying portion; a second conveying portion arranged downstream of the first conveying portion; a shutter member rotated by the pressure of the sheet and including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet; and an urging portion which provides the shutter member with an urging force for positioning one abutment surface at an abutment position at which the leading edge of the sheet abuts against the one abutment surface, the urging portion providing the shutter member with an urging force for rotating the shutter member to position another abutment surface at the abutment position after the leading edge of the sheet is nipped by the second conveying portion.
摘要:
A sheet conveying apparatus including: a conveying roller pair conveying a sheet by a nip portion; a shutter portion which is rotatably supported on a rotary shaft of the first conveying roller; a same radius portion, provided in the shutter portion, which is formed to have substantially the same radius as a radius of the first conveying roller; an abutment portion, provided in the shutter portion, and against which the leading edge of the sheet is abutted; and a boundary portion, provided in a boundary of the abutment portion and the same radius portion, which guides the leading edge of the sheet to the nip portion when the shutter portion is rotated by abutting the leading edge of the sheet against the boundary portion.
摘要:
A sheet detecting device includes a rotation unit having an abutment surface, a positioning unit configured to position the rotation unit in a standby position where the leading edge of the conveyed sheet abuts the abutment surface, and a detecting unit configured to detect the conveyed sheet on the basis of the rotation of the rotation unit pressed by the conveyed sheet, wherein the rotation unit rotates to a sheet passage posture where the sheet is allowed to pass after being pressed by the leading edge of the conveyed sheet and, when the trailing edge of the conveyed sheet passes the rotation unit, the rotation unit is rotated from the sheet passage posture in the same direction as a sheet conveying direction and is positioned in the standby position.
摘要:
A printer includes a fixing device that fixes a toner image formed on a sheet and a sheet delivery roller pair for delivering the sheet on which the toner image is fixed by the fixing device onto a sheet delivery tray placed outside of a printer main body. The printer includes a supporting member that supports an upstream edge portion of the sheet in a delivery direction delivered from the sheet delivery roller pair so that the upstream edge portion does not fall down on the sheet delivery tray. The printer includes a blower unit that blows air along a lower surface of the sheet supported by the supporting member from the upstream edge portion of the sheet in the delivery direction toward a downstream edge portion of the sheet in the delivery direction.
摘要:
The sheet feeding apparatus includes a sheet stack tray on which sheets to be fed are stacked, a drive motor for moving up the sheet stack tray, a detection sensor for detecting the position of an uppermost sheet stacked on the sheet stack tray, and a control part for controlling the function of the drive motor, wherein, when the detection sensor detects that the uppermost sheet reaches a predetermined height while the drive motor executes a drive so as to move up the sheet stack tray, the control part tentatively stops or decelerates the drive motor and thereafter drives the drive motor so as to move up the sheet stacked on the sheet stack tray to a feed position.
摘要:
A sheet feeding apparatus includes a middle plate, a lifter mechanism, and a sheet-feed roller. The sheet-feed roller can move to a first position retracted from the sheet, a second position lower than the first position for feeding the sheet, and a third position lower than the second position. The sheet feeding apparatus has a position control mode in which when a sheet is fed, the sheet-feed roller is moved from the first position to the third position and stopped there, the middle plate is moved toward the sheet-feed roller by the lifter mechanism, the sheet stacked on the middle plate is brought into abutment against the sheet-feed roller, the middle plate is moved until a position detection sensor outputs the detection signal that the sheet-feed roller is in the second position, and a height of the sheet is controlled.
摘要:
Disclosed is a sheet feeder in which sheets are fed by a feeding member from a tray on which the sheets have been loaded. When the tray is driven by a drive unit to lift up the tray from a sheet replenishment position to a position at which sheets can be fed, a first sensor senses that the top sheet on the tray is situated at a prescribed position. Response to this sensing of the first sensor the drive unit performs a predetermined intermittent driving for lifting the tray. It is determined based upon outputs from the first and second sensors whether or not a sheet is present on the tray.