摘要:
A system for positioning and feeding media in an image forming device according to one embodiment includes a raisable lift plate having a top surface for receiving a stack of media sheets and a pick mechanism for feeding the media sheets into a media feed path. The system further includes a drive transmission having a single input, a first output connected to the pick mechanism for driving the pick mechanism, a second output connected to the lift plate for raising the lift plate, a first clutched gear connected to the first output of the drive transmission, and a second clutched gear connected to the first clutched gear and the second output of the drive transmission. The second clutched gear has an engagement opposite the first clutched gear. A single motor is connected to the input of the drive transmission for raising the lift plate and driving the pick mechanism.
摘要:
A media sheet guide device for maintaining proper sheet alignment in an image forming machine includes a body extending between spaced apart reference edges of respective upstream and downstream media alignment mechanisms and a face on the body defining a path along which a sheet moves lengthwise from the upstream reference edge to the downstream reference edge. The face has a section extending widthwise and defining a portion of the path about which the sheet bends widthwise as the sheet moves lengthwise along the path portion. The face section has first and second segments differing in curvature for applying a differential drag widthwise across the sheet causing a rotation of the sheet sufficiently to displace a leading end of the sheet away from the downstream reference edge to thereby ensure that a leading corner of the sheet can enter into the downstream reference edge without jamming against an entry end thereof.
摘要:
A detachable reversible pick mechanism for a media input tray. The pick mechanism comprises a reversible drive transmission having a drive shaft gear operatively connected to a pick axle gear, the drive shaft gear slidably engageable onto a cantilevered drive shaft extending from a housing, a pick axle having a pick wheel at each end, the pick axle operatively connected to the pick axle gear; and a transmission housing consisting of a top, a bottom, and a side surface defining a cavity therein for containing the reversible drive transmission, an opening in a front portion and in a rear portion of the transmission housing through which the pick axle and drive shaft, respectively, pass, the front portion dimensioned so that the pick wheels each extend beyond the top and the bottom of the front portion, and a releasable latch mounted on the side surface for rotatably engaging a free end of the cantilevered drive shaft to axially position the pick mechanism on the drive shaft, the latch allowing a user to readily dismount the pick mechanism for service or replacement.
摘要:
A method for determining the amount of media sheets in a media tray in an image forming device according to one embodiment includes raising a lift plate supporting a stack of media sheets toward a pick mechanism for feeding the media sheets by rotation of a motor in a first direction. An amount of rotation of the motor in the first direction is determined. An indication of an amount of media sheets remaining in the media tray is provided based on the determined amount of rotation of the motor in the first direction.
摘要:
A removable media input tray assembly comprising a housing for receiving a removable media input tray. One or more housing assemblies stackable beneath an image forming device. The assembly having a substantially continuous media reference surface extending the height of a media feed path formed by two vertically aligned plates, one plate mounted on the removable media input tray and the other mounted on the housing and extending into the removable media input tray when installed in the housing, the arrangement of plates minimizing any gaps in the media reference surface within the assembly and adjacent assemblies and the image forming device.
摘要:
A method for positioning and feeding media into a media feed path according to one embodiment includes moving a first media sheet from the top of a stack of media sheets in a media storage location in a media process direction from an initial pick position into a media feed path leaving a second media sheet at the top of the stack of media sheets. In the media storage location, the second media sheet is moved opposite the media process direction away from an entrance to the media feed path until a leading edge of the second media sheet reaches a known predetermined position in the media storage location. After the leading edge of the second media sheet reaches the known predetermined position, the second media sheet is moved in the media process direction from the stack of media sheets into the media feed path.
摘要:
A method for positioning and feeding media into a media feed path according to one embodiment includes moving a first media sheet from the top of a stack of media sheets in a media storage location in a media process direction from an initial pick position into a media feed path leaving a second media sheet at the top of the stack of media sheets. In the media storage location, the second media sheet is moved opposite the media process direction away from an entrance to the media feed path until a leading edge of the second media sheet reaches a known predetermined position in the media storage location. After the leading edge of the second media sheet reaches the known predetermined position, the second media sheet is moved in the media process direction from the stack of media sheets into the media feed path.
摘要:
A method for determining the amount of media sheets in a media tray in an image forming device according to one embodiment includes raising a lift plate supporting a stack of media sheets toward a pick mechanism for feeding the media sheets by rotation of a motor in a first direction. An amount of rotation of the motor in the first direction is determined. An indication of an amount of media sheets remaining in the media tray is provided based on the determined amount of rotation of the motor in the first direction.
摘要:
A method for indexing a lift plate in an image forming device according to one exemplary embodiment includes driving a motor in a first direction to drive a pick mechanism for feeding media from a stack of media sheets on a raisable lift plate such that as media is fed the height of the pick mechanism decreases. When the height of the pick mechanism falls below a predetermined level, the motor is driven a predetermined amount of rotation in a second direction opposite the first direction to raise the lift plate in order to raise the pick mechanism to a desired pick height.
摘要:
A method for indexing a lift plate in an image forming device according to one exemplary embodiment includes driving a motor in a first direction to drive a pick mechanism for feeding media from a stack of media sheets on a raisable lift plate such that as media is fed the height of the pick mechanism decreases. When the height of the pick mechanism falls below a predetermined level, the motor is driven a predetermined amount of rotation in a second direction opposite the first direction to raise the lift plate in order to raise the pick mechanism to a desired pick height.