Abstract: A sheet stacking apparatus includes a tray capable of stacking plural sheets, and four wires with one end of each of them being connected to a corresponding one of portions at four corners of the tray. On the downstream side of the tray concerning a sheet feeding direction, the other end of each of two wires is connected via pulleys provided above the tray. A winding unit in the apparatus vertically moves the tray hung by the four wires by winding up or rolling down the two wires. On a side opposite to the side of the tray where the connecting portion to which one end of each of the two wires connected to the winding unit is connected, the other end of each of the remaining two wires are connected via pulleys provided above and below the tray, respectively.
Abstract: A sheet feeder includes: a wheel for issuing a lowermost sheet out to a sheet processing unit; a grate for spacing the sheet apart from the wheel at a raised position and bringing the sheet into contact with the wheel at a lowered position; and a drive device for driving the grate up and down. The drive device includes: a link mechanism for movably supporting the grate; a spring for urging the grate to the lowered position; a grate raising/lowering cam for periodically driving the grate up/down; and a skip feed cam that is driven by a control device, separately from a drive system of the grate raising/lowering cam, and that, at a timing where reached is a phase at which the grate raising/lowering cam does not put the grate in the raised position, retains the grate at the raised position in order to skip feeding of the sheet.
September 24, 2015
Date of Patent:
July 9, 2019
MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD.
Abstract: According to an embodiment, a sheet processing apparatus includes a first tray, a second tray, and a pressing member. The pressing member includes a turning shaft, the turning shaft being located on the downstream side of a transport direction of the sheet to the first tray, relative to an end of the upstream side of the sheet supported in the first tray, and when the sheet is moved from the first tray toward the second tray, rotates about the turning shaft. The pressing member rotates about the turning shaft, to press the sheet toward the second tray at a position on the upstream side relative to the turning shaft.
Abstract: A sheet feeding device includes: a feeding unit that is provided to be movable in a forward-backward direction to move forward or backward relative to a sheet placing unit on which a sheet is placed, and feeds the sheet; a moving unit that moves the feeding unit in the forward-backward direction; a contact unit that is provided to be movable, with which the sheet placed on the sheet placing unit is brought into contact; a limitation unit that limits movement of the contact unit; and a releasing unit that, when the moving unit moves the feeding unit in a direction away from the sheet placing unit, with the movement of the feeding unit, releases limitation on the movement of the contact unit by the limitation unit.
Abstract: An image forming apparatus includes an image forming unit forming images on a first sheet and a second sheet having a higher stiffness than the first sheet, a discharge rotary member pair, and a sheet supporting unit to support the first and second sheets discharged through the discharge rotary member pair. In addition, an abutment surface abuts against upstream ends of the first and second sheets supported on the sheet supporting unit, and an elevation unit moves the sheet supporting unit up and down. A control unit, in a state where no sheet is supported on the sheet supporting unit, executes a first discharge mode of controlling the elevation unit to position the sheet supporting unit at a first position before the discharge rotary member pair starts discharging the first sheet, and a second discharge mode of controlling the elevation unit to position the sheet supporting unit at a second position lower than the first position.
Abstract: The present application discloses a post-processing apparatus including a second tray which receives a sheet stack ejected from a first tray, a pushing mechanism including a pushing portion which pushes the sheet stack against the second tray, a motion detector which detects a motion of the pushing mechanism, and a controller including an ejection controller which controls an ejector. When the ejector ejects the sheet stack, the pushing mechanism moves the pushing portion in a first direction away from the second tray. When the ejector finishes ejection of the sheet stack, the pushing mechanism moves the pushing portion in a second direction which is opposite to the first direction. Unless the motion detector detects the motion of the pushing mechanism moving the pushing portion in the first direction when the ejector ejects the sheet stack, the ejection controller executes interruption control of stopping the ejection of the sheet stack.
Abstract: A transporting apparatus includes a speaker and a microphone that are arranged opposite to each other with respect to a transportation path, and a controller that controls a transportation mechanism based on microphone output obtained by causing the microphone to acquire a sound emitted by the speaker. The controller uses the microphone to acquire the sound emitted by the speaker and changes, based on the microphone output, at least any of a time period during which the speaker is driven, output from the speaker, and the microphone output.
Abstract: An apparatus for fetching a blank from a magazine holding a number of blanks is presented. Each of the blanks is a sleeve shaped piece of packaging material folded planar. The apparatus comprises a rotary feeder provided with a gripper. The rotary feeder and the gripper are arranged to rotate around a main rotational axis, such that the gripper is moved between a fetching position in which a blank is fetched and a releasing position in which the blank is released. The gripper is arranged to rotate around a gripper specific rotational axis, such that fetching the blank in the fetching position is facilitated.
Abstract: A collection system for collecting flat objects, including a plurality of collection trays disposed one on top of the other, each of the collection trays having an entrance and an exit; a feeder unit for feeding individual objects or assembled groups of objects to the entrance of the collection trays and for depositing the supplied objects in the respective collection tray, the feeder unit and collection trays being movable or swivelable relative to one another; a conveyor unit for removing the objects deposited in a collection tray through the exit of the respective collection tray; and a movable retaining element, which closes the entrance of one of the collection trays after an individual object or an assembled group of objects has been deposited in the respective collection tray. All of the objects collected in the collection trays are simultaneously removed from the collection trays by a conveyor unit and stacked.
March 14, 2016
Date of Patent:
May 7, 2019
BÖWE SYSTEC GMBH
Helmut Eichelberg, Helmut Koelle, Peter Müller-Odenthal, Heiner Kudrus, Josef Batzer, Bernd Höpner
Abstract: A multi-stage sheet ejection device including a tray and a level adjusting structure is provided. The level adjusting structure includes a body and a sliding element. The body has a plurality of stages arranged on a vertical surface of the body in order. The sliding element is disposed on the body and horizontally movable with respect to the vertical surface of the body. Through the movement of the sliding element, the tray can be controlled to move on the vertical surface stage by stage and be supported on one of the stages in sequence.
Abstract: An image forming apparatus for forming an image on a sheet includes an image forming unit, a first pair of rollers, a second pair of rollers, and a holder. The image forming unit is configured to form an image on a sheet. The first pair of rollers is configured to discharge the sheet out of the apparatus, the image having been formed on a first surface of the sheet by the image forming unit. The second pair of rollers is configured to convey the sheet again to the image forming unit to form an image on a second surface of the sheet opposite to the first surface. The holder is configured to hold one of the first pair of rollers and one of the second pair of rollers.
Abstract: A conveyance device includes a guide, a positioner, and a pusher. The guide extends in a longitudinal direction of an image bearer and is disposed upstream from a transfer position, at which an image is transferred from the image bearer to the recording medium, in a direction of conveyance of a recording medium to guide the recording medium. The positioner positions an end of the guide relative to the image bearer. The pusher contacts the guide at a position closer to a center of the guide than the end of the guide in the longitudinal direction, to push the guide toward the image bearer.
Abstract: A sheet feeder comprises a sheet stacking unit which stacks sheets, a sheet pickup unit which picks up a sheet from one side of the stacked sheets on the sheet stacking unit, a sheet separating and feeding unit which separately feeds sheets one by one to a conveyance path, an orientation holding unit which holds a feed orientation of a sheet, and a biasing unit which biases the orientation holding unit from a retracted position to a projecting position. A projection amount of the orientation holding unit from an inclined surface increases as the number of stacked sheets decreases, and the projection amount from the inclined surface decreases as the number of stacked sheets increases.
Abstract: An image forming apparatus includes a sheet container accommodating a recording medium therein, a sheet separating feeder including a sheet feeding body and a sheet separating body, an image forming part, and a bend applier. The sheet feeding body feeds the recording medium along with a surface movement thereof while the recording medium contacting the surface thereof. The sheet separating body forms a sheet separation nip region with the sheet feeding body and sandwiches the recording medium in the sheet separation nip region. The sheet separating feeder separates and feeds the recording medium contacting the sheet feeding body. The image forming part forms an image on the recording medium. The bend applier having a leading end of an elastic material contacts and bends the recording medium before the sheet separation nip region and generates a wrinkle extending on the recording medium in a sheet conveying direction.
Abstract: A sheet feeding device includes a stacking unit, a feeding unit, a rotating member, a separation unit, a holding unit, a swinging member, and a guiding unit. The stacking unit stacks sheets. The feeding unit feeds stacked sheets. The rotating member conveys sheets, and is on a feeding unit downstream side. The separation unit separates fed sheets one by one, and contacts the rotating member. The holding unit holds the feeding unit and rotating member, and is rotatable about a rotating member rotation shaft. The swinging members swingably disposed on the holding unit and the guiding unit on a swinging member lower side guides the sheets with contact. A first contact portion of the swinging member and the guiding unit is on a second contact portion upstream side, that is a rotating member/separation unit contact portion. A swinging member swinging shaft is on the first contact portion upstream side.
Abstract: A sheet loader includes a sheet loading part and a sheet length detector. The sheet loading part has a loading face on which a sheet is loaded. The sheet length detector is provided to the sheet loading part to detect a length of the sheet by obtaining information whether the loading face either contacts or approaches a surface of the sheet disposed facing the loading face at a given position on the loading face in a sheet conveying direction of the sheet loading part. The sheet length detector includes multiple projections retreatably extending outward beyond the loading face of the sheet loading part, and a projection retreating detector detecting whether the multiple projections are retreated under the loading face. At least one of the multiple projections is disposed closer to an upstream end of the sheet loading part than the other.
Abstract: An image forming apparatus includes: one paper cassette configured to accommodate a paper sheet; an image forming section provided above the paper cassette to form an image on the paper sheet; a main conveying path configured to convey the paper sheet; and a reverse conveying path configured to reverse the paper sheet, wherein the reverse conveying path includes: a first reverse conveying path provided side by side with the paper cassette to extend vertically; a second reverse conveying path configured to connect from the first reverse conveying path and extend below the paper cassette; a guide plate configured to open and close the first reverse conveying path and release pressure of a pair of paper conveying rollers; and an entry restricting unit provided at a boundary point between the first reverse conveying path and the second reverse conveying path to open and close a conveying course of the paper sheet.
Abstract: A stacking wheel mechanism (30) includes a stacking wheel (32) that is arranged near a stacking unit (26) and having a plurality of elastic blades (32a) on an outer circumferential surface thereof, and a blade guiding member (38) that is arranged near the stacking wheel (32) to guide the blades (32a) of the stacking wheel (32). The blade guiding member (38) guides the blades (32a) of the stacking wheel (32) such that the blades (32a) of the stacking wheel (32) enter into a transport path (for example, an internal transport path (36)) when the stacking wheel (32) rotates in a feeding-in direction of a paper sheet toward the stacking unit (26) and the blades (32a) of the stacking wheel (32) retreat from the transport path when the stacking wheel (32) rotates in a feeding-out direction of the paper sheet from the stacking unit (26).
Abstract: A sheet feeder, which is included in an image forming apparatus, includes a sheet loader on which a sheet is loaded, a sheet feeding body to feed the sheet from the sheet loader, and a sheet separator disposed to contact the sheet feeding body. The sheet is fed at a first average sheet feeding speed at which the sheet feeding body is in contact with the sheet separator without holding the sheet with the sheet separator. The sheet is fed at a second average sheet feeding speed at which the sheet feeding body is holding the sheet with the sheet separator. The first average sheet feeding speed is set smaller than the second average sheet feeding speed.
Abstract: A sheet detecting device usable with a sheet feeding device for feeding a sheet, the sheet detecting device includes a common light emitter; a first light receptor and a second light receptor for receiving the light emitted by the common light emitter and output a signal in response to the reception of the light; a first detector configured to detect presence or absence of the sheet by switching the signal outputted by light receptor, in response to the sheet blocking or reflecting the light emitted by the common light emitter; a movable portion capable of being moved by the sheet which is moving; and a second detector configured to detect presence or absence of the sheet by switching the signal outputted by the second light receptor, in response to the movable portion forming or blocking a optical path for the light emitted by the common light emitter.