Abstract: A sheet conveying device has a supporting frame that supports a pick-up roller and that moves downward when a sheet is fed, a stepping motor that rotates the pick-up roller and moves the supporting frame downward, and a control portion that starts driving the stepping motor when a job is started and then increases a frequency of the pulse signal to a target frequency. The control portion keeps the frequency of the pulse signal not more than ½ of the target frequency at least until the pick-up roller touches the sheet first.
Abstract: A drive transmission device includes a shaft supporting member attached to a drive frame. The shaft supporting member rotatably supports a driving shaft. The shaft supporting member includes two bearing surfaces for rotatably holding the driving shaft, where the two bearing surfaces are disposed so as to be on a straight line, and a boss portion having the center thereof located on the straight line for positioning the drive transmission device relative to the drive frame.
Abstract: A flattening device includes: a holder configured to support the following components; at least one flattening roller set, including a first flattening roller and a second flattening roller arranged oppositely at two sides of a sheet medium conveying path; and a power mechanism configured to drive the first and second flattening rollers to rotate. A surface of the first flattening roller is distributed with n arc-shaped grooves arranged in parallel with an axis direction of the first flattening roller, wherein n is a natural number greater than or equal to 1; and a surface of the second flattening roller is provided with at least one arc-shaped protruding portion in rolling engagement with the arc-shaped grooves of the first flattening roller; and wherein, the first flattening roller and the second flattening roller are in rolling engagement to form a conveying passage for the sheet medium.
Abstract: A sheet containing system includes a containing member, a feed device, an ascending device, and a powder applying device. The containing member has a wall portion and is to contain a sheet. The feed device feeds the sheet to an outside of the containing member. The ascending device moves up the sheet contained in the containing member toward the feed device. The powder applying device is provided in the wall portion disposed on a downstream side in the containing member in a transport direction of the sheet. The powder applying device applies powder to an end portion of the sheet on the downstream side in the transport direction of the sheet.
Abstract: A bidirectional media supporting system includes a first and second rollers configured to rotate to feed media in forward and reverse feed modes; a first clutch bearing set, and a second clutch bearing set configured to engage with the first clutch bearing set; and a gear transmission assembly configured to transfer a driving force from the first roller to the second roller. A method for reversing direction of printing media includes advancing media while maintaining a rotational speed of a platen roller assembly above that of a feeding roller assembly; receiving a signal to reverse the direction of advancing media; and adjusting operation by reversing a direction of rotation of a transmission gear coupled to the feeding and platen roller assemblies, and by rotating the roller assemblies in an opposite direction, while maintaining the rotational speed of the platen roller assembly below that of the feeding roller assembly.
February 20, 2017
Date of Patent:
April 9, 2019
Boon Kheng Lim, Yaw Horng Yap, Chin Young Wong
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: A sheet feeder includes a delivery roller, a supply roller, a separating member, a driving source, a first drive transmission mechanism, a second drive transmission mechanism, and a controller. The first drive transmission mechanism transmits the rotary drive power in the first direction to the delivery roller in a first drive transmission time from the start of driving of the driving source. The second drive transmission mechanism transmits the rotary drive power in the first direction to the supply roller in a second drive transmission time from the start of driving of the driving source. The second drive transmission period of the second drive transmission mechanism is longer than the first drive transmission period of the first drive transmission mechanism. When the control starts driving the driving source, the supply roller starts to rotate in the first direction after the delivery roller starts to rotate in the first direction.
Abstract: A pickup roller is moved to a retracted position by rotating a feeding motor in reverse by a first predetermined amount and is moved to a contact position by rotating the feeding motor forward by a second predetermined amount.
Abstract: A paper feeding apparatus of an image forming apparatus is provided. The paper feeding apparatus includes a pickup unit configured to rotate about a first axis, a swing member configured to rotate about a second axis, and to move the pickup unit from a contact location to a separation location by pressing the pickup unit, an elastic member configured to provide an elastic force to the swing member, and a rotation limiter configured to limit a rotation angle at which the swing member rotates, wherein a momentum of the swing member is less than a momentum of the pickup unit, while the swing member presses the pickup unit and rotates.
Abstract: The present invention provides a method and apparatus for separating a media item from a bunch of media items. The apparatus comprises at least one first roller located on a first side of a transport path along which a media item is transported and at least two further rollers located on a further side of the transport path opposite the first side, said at least two further rollers being spaced apart to receive a portion of said at least one first roller therebetween, wherein in an advance mode of operation said first and further rollers rotate in the same direction and in a reject mode of operation said first and further rollers rotate in opposite directions.
Abstract: A transmission device includes a pickup roller assembly, a feeding roller assembly including a feeding shaft, a paper-out roller assembly including a paper-out shaft, a driving motor, a one-way drive gear module, a first transmission gear module, a second transmission gear module and a one-way clutch. The first transmission gear module includes a plurality of transmission gears disposed to two ends of the feeding shaft and two ends of the paper-out shaft. The second transmission gear module is engaged with one of the transmission gears mounted around one end of the feeding shaft. The one-way clutch disposed between the feeding shaft and the paper-out shaft, includes a first clutch gear, a second clutch gear, a third one-way clutch gear disposed between the first clutch gear and the second clutch gear, and a compression spring disposed to one end of the second clutch gear.
Abstract: An image forming apparatus has a registration roller pair, an upstream-side roller pair, a driving force source, a shared clutch, and an upstream-side roller stop delay mechanism. The upstream-side roller pair is provided on the upstream side of the registration roller pair with respect to the sheet transport direction. The driving force source generates a rotating driving force. The shared clutch engages and disengages the transmission of the rotating driving force from the driving force source to the registration roller pair and the upstream-side roller pair. When the transmission of the rotating driving force is disengaged by the shared clutch, the upstream-side roller stop delay mechanism delays the stopping of the upstream-side roller pair relative to the stopping of the registration roller pair.
Abstract: An ink jet printer is a multifunctional recording apparatus in which a scanner unit is coupled to a recording unit in a rotationally movable manner. The scanner unit includes a protrusion. A carriage, the protrusion, and a rotational movement shaft of the scanner unit are arranged in this order from the unit front side to the unit rear side in the unit depth direction.
Abstract: Disclosed is a banknote separation apparatus, comprising a banknote support plate used for bearing banknotes to be separated, a reference plate used for laying and ordering banknotes, a banknote pressing plate used for supplying compression on banknotes to be separated, a banknote separating wheel formed with a high friction part and exposed at the outside of the banknote support plate and arranged facing the banknote pressing plate, a feeding wheel and a reverse wheel arranged facing the feeding wheel, wherein the banknote separating apparatus further comprises a pressure compensation apparatus used to provide a variable compression compensation force to the banknote separating wheel so as to make the total positive pressure to which the banknote separating wheel is subjected constant. That is to say, the provision of a pressure compensation apparatus makes the frictional force for separating banknotes of the banknote separation apparatus constant.
Abstract: According to the present disclosure, a recording medium feeding device includes a pickup roller, a feed roller, a retard roller, a holding member, a pressing mechanism, a pressing force changing mechanism, and a driving force transmitting mechanism. The holding member is configured to rotatably support the feed roller and the pickup roller. The pressing mechanism is configured to press the pickup roller against a recording medium. The pressing force changing mechanism is configured to change the pressing force of the pickup roller. The driving force transmitting mechanism is configured to transmit a rotation-driving force to the feed roller. The pressing force changing mechanism obtains a driving force from the driving force transmitting mechanism, and increases the pressing force according to rotation time of the pickup roller.
Abstract: A sheet feeder, including: a sheet supply roller configured to supply a sheet to a sheet feeding path; a sheet feed roller configured to feed the sheet supplied to the sheet feeding path by the sheet supply roller to a downstream side in a sheet feeding direction in which the sheet is fed; a discharge roller configured to discharge the sheet fed by the feed roller to a downstream side in the sheet feeding direction; a drive motor configured to drive a first shaft for rotating the feed roller; a first transmitting mechanism configured to transmit a rotary motion of the first shaft to a second shaft for rotating the discharge roller; and a second transmitting mechanism configured to transmit a rotary motion of the second shaft to a third shaft for rotating the sheet supply roller.
September 25, 2013
Date of Patent:
August 25, 2015
Brother Kogyo Kabushiki Kaisha
Yasuhira Ota, Iwane Sano, Masao Mimoto, Shingo Ito
Abstract: A sheet feeding portion is provided with a pair of separation rollers that include a feed roller which conveys the sent sheet and a retard roller which applies a rotation force to return the sheet in a direction opposite to a sheet feeding direction through a torque limiter in a state of being pressed against the feed roller. The sheet feeding portion further includes a rotation transmitting mechanism that transmits a rotation of the retard roller, at the time of sending the sheet to the sheet feeding direction, to the pickup roller and a changing mechanism that switches a retard pressure, which allows the retard roller to be pressed against the feed roller, according to a reaction force that is transmitted to the retard roller from the pickup roller.
Abstract: There is provided an image forming apparatus including a driving source, a switchback roller which switches between a normal rotation direction and a reverse rotation direction, first and second gear train for rotating the switchback roller in the normal and reverse rotation directions, respectively, a switching mechanism which switches among a first mode for transmitting driving force to the first gear train, a second mode for transmitting the driving force to the second gear train, and a third mode for not to transmit the driving force, a switching element which switches between a first state allowing switching of the switching mechanism into the first or third mode and a second state allowing switching of the switching mechanism into the second mode; and a controller which controls a state change of the switching element between the first state and the second state.
Abstract: The printing apparatus of the present invention includes a delay mechanism that can transmit, with a delay, the rotational force of a discharge roller to a discharge tray. When the reverse rotation of the discharging roller has been begun, the delay mechanism accumulates the length of the delay, or, when the forward rotation of the discharge roller is performed for a longer period than the accumulated length of the delay, opens the discharge tray. When the feeding of a sheet is not performed during a sheet feeding operation accompanied by the reverse rotation of the discharging roller, the discharging roller is rotated forward to cancel out the length of the delay accumulated in the delay mechanism.
Abstract: The present invention provides a sheet conveying device comprising a first conveyance path for conveying a sheet from a pair of first rollers to a pair of second rollers, a second conveyance path for performing switchback conveyance of the sheet, a switching unit for switching the second rollers between a press-contacted state and a separated state, and a single driving source for driving the rollers and the switching unit. A non transferring of drive section is set where when the driving source switches the rotation direction after the sheet that has been switchback-conveyed has reached the first rollers, a drive from the driving source is not transferred to the second rollers. The switching unit is driven to separate the second rollers during a time the drive is not transferred to the second rollers due to the non transferring of drive section.
Abstract: An image recording apparatus, including: a drive source rotatable forwardly and reversely; a first roller rotatable in a first direction by the forward rotation of the drive source to convey a conveyed medium and rotatable in a second direction reverse to the first direction by the reverse rotation of the drive source; a recording device; a second roller; a first power transmitter which transmits a first-direction driving power to the second roller and not to transmit a second-direction driving power to the second roller, wherein the first-direction driving power is a rotational driving power of the first roller rotating in the first direction, and the second-direction driving power is a rotational driving power of the first roller rotating in the second direction; and a second power transmitter which transmits the second-direction driving power to the second roller and not to transmit the first-direction driving power to the second roller.
Abstract: A sheet conveying device includes: a separation sheet feeding mechanism having a paper feeding belt and a separation roller; and an adjustment mechanism that changes contact state of the paper feeding belt to the separation roller by changing relative position of the paper feeding belt and the separation roller, and changes and adjusts separation performance of the separation roller for the subsequent sheet, wherein the adjustment mechanism includes a cam follower member changing the relative position of the feeding belt and the separation roller, the cam member includes a first cam face and a second cam face which are formed at each rotation radius position in accordance with the rotation angle position, and are spaced apart in the rotation radius direction, and the cam follower member has a contact unit guided by the first cam face and the second cam face.
Abstract: A sheet sender 21A includes a lift plate 21P, a feed roller 21B and a registration roller 23. A biasing spring 21S applies an upward force onto the lift plate 21P. The lift plate 21P is moved upward by eccentric cams 60 which are arranged at axial ends of the feed roller 21B and rotationally driven by arm protrusions 211 which have come in contact with the eccentric cams 60. A rotational driving force is transmitted to a feed gear 220 and a registration gear 231 from a main gear 70 to rotate the feed roller 21B and the registration roller 23. A gear of the main gear 70 that engages with the feed gear 220 is idly rotatable within a predetermined angle with respect to a gear that engages with the registration roller 23.
Abstract: A gear assembly including a driving gear and a driven gear and an electronic device are provided. The driving gear includes a pawl pivoted on a first surface and an elastic member disposed in a slot of the driving gear. The driven gear includes a ratchet disposed on a second surface facing the first surface. When the driving gear rotates with a driving speed along a driving direction, a centrifugal force is generated to drive the pawl moving to a clutching position to be engaged with the ratchet and drives the driven gear rotating with the driving gear. When the driving gear rotates with a nominal speed slower than the driving speed along a direction opposite to the driving direction, the engagement between the pawl and the ratchet is released, and the pawl is back to a nominal position so the driven gear does not rotate with the driving gear.
Abstract: A method of printing on a sheet of recording medium included in a randomly oriented stack of recording media provided to a printing apparatus, the method comprising: a) using a scanning element disposed in a printing path of the printing apparatus to scan a first side of the sheet of recording medium to provide scan data; b) analyzing the scan data to determine whether the first side has previously been marked on; and c) making a predetermined indicator on the first side of the sheet of recording medium if it is determined that the first side has previously been marked on.
Abstract: Disclosed is an automatic transaction apparatus 1 provided with a temporary accumulating unit that accumulates paper money temporarily and discharges them again, wherein jammed paper money can be discharged and removed easily with a simple construction. The automatic transaction apparatus 1, which is provided with the temporary accumulating unit 30 that accumulates paper money 7a temporarily by conveying the paper money 7a with a conveyor roller section 40 and winding them around a drum 60, and dispenses the temporarily accumulated paper money 7a from the drum 60 and discharges them from the conveyor roller section 40, was also provided with a manipulation knob 100 that is pushed-in between a gear 65 that rotates the drum 60 and a gear 47 that rotates the conveyor roller section 40, and intermeshed to the gears, enabling the knob to rotate both the gears simultaneously.
Abstract: An image recording apparatus includes: a conveyor roller pair for conveying a sheet along a first path in a conveying direction; a reversible roller pair including first and second rollers and for conveying the sheet in the conveying direction and to a second path; a state switching mechanism for switching the reversible roller pair between a first state in which the first roller is pressed against the second roller and a second state in which the first roller is distant from or pressed against the second roller with smaller force; and a controller for controlling: the reversible roller pair to convey the sheet along the second path until its leading edge reaches a position downstream of the conveyor roller pair and upstream of the reversible roller pair; the reversible roller pair to switch from the first state to the second state; and a recorder to perform image recording.
Abstract: An image forming apparatus may include a first tray configured to accommodate one or more recording sheets to be supplied to an image forming unit, a body frame configured to position an upper part of the first tray, and an expansion members disposed under the body frame to position a lower part of the first tray. The expansion member may include a transmission mechanism configured to be engagable with a body-side gear provided in the body frame. The transmission mechanism may be configured to transmit a drive force, which is transmitted from a drive source provided in the body frame via the body-side gear, to an add-on mechanism, when the transmission mechanism is engaged with the body-side gear.
Abstract: A sheet feeder stackable in multiple levels and attachable to an image forming apparatus. The sheet feeder includes a drive source, a drive transmission unit, a first drive coupling unit, a second drive coupling unit, a sheet feed roller, and a grip roller. During operation of multiple sheet feeders stacked in the multiple levels, the drive transmission unit and the first drive coupling unit, both provided to a given sheet feeder of the multiple sheet feeders, are coupled to each other, and the first drive coupling unit of the given sheet feeder is coupled to the grip roller of an adjacent sheet feeder disposed immediately below the given sheet feeder to drive the grip roller of each of the multiple sheet feeders substantially in synchrony.
Abstract: A sheet feeding unit having a holding section; a separation pad that contacts a sheet and imparts a conveyance resistance to the sheet; a separation roller that imparts a conveyance force to the sheet; a drive source that supplies driving force to the separation roller; a conveyance roller disposed at a position downstream of the separation roller, wherein the conveyance roller rotates at a circumferential speed greater than a circumferential speed of the separation roller, to impart conveyance force to the sheet, and wherein the conveyance roller and the separation roller are disposed so as to simultaneously contact the same sheet; and a drive shutoff unit, which shuts off the driving force supplied to the separation roller when the conveyance roller imparts the conveyance force to the sheet so the separation roller rotates in a following manner with the conveyance of the sheet.
Abstract: A paper feeding device and a multi-function printer using the same are provided. The paper feeding device includes a frame, a top cover, a set of gear chains, a power unit and a set of driving gears. The set of gear chains and the power unit are disposed on a side of the frame. The set of driving gears is disposed on the top cover. When the top cover is closed relatively to the frame, the set of driving gears interferes with the power unit, and the power unit provides a power to enable the set of driving gears to rotate, so as to drive the set of gear chains. When the top cover is opened relatively to the frame, the set of driving gears releases interference with the power unit and the set of gear chains, and the set of gear chains is at a free rotation status.
July 23, 2012
Date of Patent:
September 10, 2013
Cal-Comp Electronics & Communications Company Limited, Kinpo Electronics, Inc.
Chen-Fu Huang, Po-Chih Chang, Pei-Chi Ho
Abstract: There is provided an image recording apparatus including: a first and a second feeding roller; a recording head; a carriage; a first and a second drive motor; and a drive transmission switching mechanism transmitting a driving force of the second drive motor to the first and the second feeding roller. The drive transmission switching mechanism includes: a first to a fourth gear; a supporting shaft; a first transmitting section transmitting a rotation of the third gear to the first feeding roller and preventing transmission of rotation of the third gear to the first feeding roller, when the second gear is in a first posture; and a second transmitting section transmitting a rotation of the fourth gear to the second feeding roller and preventing transmission of rotation of the fourth gear to the second feeding roller, when the second gear is in the first posture.
Abstract: An automatic document feeder includes a paper pick-up device, a first roller assembly, and a second roller assembly. The first roller assembly includes a first shaft, a first roller, and a power coupling device. When the power coupling device is connected with the first shaft and the first roller for transmitting a paper, the first roller is driven to be rotated by the first shaft. When the front edge of the paper is moved to the second roller assembly, the first roller is driven to be rotated at a higher speed by the paper. Consequently, a power connection between the first roller and the first shaft is released by the power coupling device. Then, the first roller reaches a static status in order to correct the skew phenomenon of the next paper.
Abstract: Provided is a medium processing apparatus, which comprises a transfer roller unit and a guide roller unit. The transfer roller unit comprises a first rotation shaft and one or more transfer rollers coupled to the first rotation shaft. The guide roller unit receives power from the transfer roller unit, and comprises a second rotation shaft, a one-way clutch connected to the second rotation shaft, and a guide roller connected to the one-way clutch.
Abstract: A recording medium feeding device includes a first rotating member picking up a recording medium, a second rotating member transporting the picked-up recording medium, a driving gear unit rotating and transmitting a driving force, a first transmission mechanism having a first gear and transmitting the driving force in a first rotation direction to the first rotating member and the second rotating member, a second transmission mechanism having a second gear and transmitting the driving force in a second rotation direction to the first rotating member, and a transmission adjusting portion transmitting the driving force of either one of the first or second gear to either one of the first or second transmission mechanism, wherein the first gear rotates in the first rotation direction, the second gear rotates in the second rotation direction, and the driving gear unit engages with both the first and second gear within a predetermined range.
Abstract: A clutch transmission mechanism of a printing device includes a power input shaft, a power input gear, a gear-shifting arm, a first gear-shifting module and a second gear-shifting module. In the cooperation of these components and modules, the printing device can be operated in a first gear-shifting mode or a second first gear-shifting mode. When the printing device can be operated in a first gear-shifting mode or a second first gear-shifting mode, the clutch transmission mechanism coaxially transmits the driving force. As such, the stability of transmitting the driving force is enhanced.
Abstract: A printer includes multiple gear trains, each gear train to pick paper. The printer also includes a print media sensor to detect the presence of print media along a paper path, a user input control, and control logic coupled to the print media sensor and the user input control. Based upon receiving multiple signals from the user input control to resume printing, each such signal following an indication from the print media sensor that paper has not been picked, the control logic to cause a change-over to occur from one gear train to another gear train.
September 14, 2011
Date of Patent:
January 8, 2013
Hewlett-Packard Development Company, L.P.
Abstract: A paper feeding mechanism mounted to a shell includes a pickup mechanism, a transporting mechanism, a separation mechanism and a one-way clutch mechanism. The pickup mechanism includes a pickup motor having a rotating roller, a pickup roller and a pickup wheel. The transporting mechanism includes a transporting motor, a transporting roller, a transporting wheel and a transporting gear. The separation mechanism includes a separation roller, a separation gear and a separation wheel. The one-way clutch mechanism includes a one-way axle, a wiggling arm, a restoration elastic element fastened between the wiggling arm and the shell, and a releasing gear. The one-way axle passes through one end of the wiggling arm. The rotating roller of the pickup motor passes through the one-way axle. The releasing gear mounted to the other end of the wiggling arm is engaged with the transporting gear and the separation gear.
Abstract: A transport-object transporting device includes a power-transmission blocking mechanism that blocks the transmission of power at an intermediate point of the cam driving gear train so as to maintain the discharge roller in the release position. The power-transmission blocking mechanism includes an engaged portion provided in the rocking arm, and an engaging portion whose engagement position thereof relative to the engaged portion is changeable by changing a rocking direction of the rocking arm. When the engaging portion is set at a predetermined engagement position relative to the engaged portion, the first planetary gear and the second planetary gear are both kept away from the cam driving gear.
Abstract: A drive switching mechanism includes a transmission gear and a planetary gear configured to transmit a drive from an input gear to an output gear. The drive switching mechanism further includes a swinging member configured to hold the planetary gear such that the planetary gear can swing around the input gear, a retaining unit configured to retain the swinging member in a swing enabled or disabled state, and a releasing unit configured to disengage the planetary gear from the output gear and cause them to be spaced apart. The output gear includes a toothless part that does not engage with a gear section engaging with the transmission gear.
Abstract: A sheet pick-up module includes a driving shaft, a driving shaft sleeve, a pick-up driving roller, a pick-up roller sleeve and a sliding sleeve. When the driving shaft is rotated to drive rotation of the driving shaft sleeve, the driving shaft sleeve pushes the sliding sleeve toward the pick-up roller sleeve, and the sliding sleeve is rotated to push the pick-up roller sleeve, so that the pick-up driving roller and the pick-up roller sleeve are synchronously rotated to transport the document at a pick-up speed. When the feed roller is contacted with the document to transport the document at a feed speed faster than the pick-up speed, the pick-up driving roller is driven to rotate by the document, and the pick-up roller sleeve is rotate to push the sliding sleeve, so that the sliding sleeve is moved in a direction away from the pick-up roller sleeve.
Abstract: Card transfer system in which a card is transferred may include transfer roller which touches and transfers the card, and rotary shaft on which transfer roller is fixed, and rotating member rotatably supported on rotary shaft, and drive mechanism coupled to rotating member to rotate rotating member, and clutch mechanism which interrupts the power transmission between rotary shaft and rotating member. Rotating member is rotatably supported on rotary shaft by antifriction bearings. Rotary shaft is rotatably supported by multiple bearings and, at the same time, at least bearing arranged closest to rotating member is a plain bearing or sliding bearing.
Abstract: A sheet material transport apparatus includes a second planetary gear engaging with a transmission gear and providing planetary motion around the transmission gear. The second planetary gear is in a second separated position not capable of engaging with a first planetary gear during forward-direction rotation. The transmission gear engages with the first planetary gear and rotates in a direction that causes a second transport roller to rotate in the forward rotation direction, and positioned to engage with the first planetary gear that is positioned in a first engaging position during reverse rotation. A load is placed on the transmission gear by the second transport roller. The transmission gear rotates in the opposite direction to the forward-direction rotation. The second planetary gear applies a force on the first planetary gear in the direction that separates the first planetary gear from the transmission gear due to rotation.
Abstract: A rotation-body controlling apparatus including: a first motor configured to rotate a first rotation body; a second motor configured to rotate a second rotation body; a first rotation amount detecting portion configured to detect a rotation amount of the first rotation body rotated in synchronization with the first motor; a second rotation amount detecting portion configured to detect a rotation amount of a second rotation shaft rotated in synchronization with the second rotation body; a transmitting mechanism configured such that a rotation of the first rotation body is transmittable to the second rotation shaft; and an origin-position detecting portion configured to detect an origin position of a rotation phase of the first rotation body on the basis of a phase of the first rotation body at a time when the second rotation amount detecting portion has detected a rotation of the second rotation shaft, where the rotation of the first rotation body operated by the first motor is transmitted to the second rotati
Abstract: A sheet feeding device includes a sheet feed tray, a chute having first and second guides, first and second rollers arranged on the first guide, first and second contact members protruded from the second guide and urged to contact the first and second rollers, respectively, and a sheet sensor arranged between the first roller and the second roller. A controller controls a motor to rotate the first and second rollers in a first direction in which the sheet is fed from the second roller to the first roller when the controller receives a signal from the sensor, and controls the motor to stop the rotation of the first and second rollers when the signal from the sensor is terminated, and then rotate the first and second rollers in a second direction in which the sheet is fed from the first roller to the second roller.
Abstract: A paper feeding apparatus for a printer includes a motor; a first roller assembly includes a first roller having a first end, a second end and an axis; a first gear disposed at the first end of the first roller, wherein the first gear is configured to be driven by the motor; and a second gear disposed at the second end of the first roller, wherein the second gear having a first bevel gear; a drive shaft including a first end, a second end and an axis, wherein the first end of the drive shaft having a second bevel gear that is configured to engage with the first bevel gear of the second gear of the first roller assembly, and wherein the second end of the drive shaft having a third bevel gear; and a second roller assembly having a second roller and a fourth bevel gear that is configured to engage with the third bevel gear at the second end of the drive shaft.
Abstract: A compact, desktop document processor for use on a counter-top is provided. A low-profile document feeding machine includes a feeder, a hopper, at least one processing device, and an output pocket. The apparatus further includes a reversible motor including a shaft, a first one-way clutch, a second one-way clutch, a nudger device, and a jogging device. The nudger device is drivingly connected to the motor through the first one-way clutch such that driving the motor in a forward direction drives the nudger device to urge a document from a document stack in the hopper into the feeder. The jogging device is drivingly connected to the motor through the second one-way clutch such that driving the motor in a reverse direction drives the jogging device to align the documents in the document stack prior to feeding.
Abstract: A document feeder configured to feed a document in a first direction includes a tray configured to load a document or a set of documents on a loading surface thereof, first and second contact portions disposed to contact the document on the loading surface, and a detecting unit configured detect whether a document is loaded on the loading surface, the detecting unit including an actuator provided between the first contact portion and the second contact portion, the actuator projecting upward from the loading surface and being configured to be moved down due to contact with the document on the loading surface.
Abstract: A sheet feeding apparatus includes a switchable transmission mechanism disposed between a pickup roller and a driving source, and switches the driving source between a first state for rotating in the forward direction to rotate the pickup roller, and a second state for not rotating the pickup roller, the forward direction is opposite to a direction in which the driving source is rotated to rotate a feeder roller in a sheet feed direction. The sheet feeding apparatus also includes a control portion rotating the driving source in the forward direction to rotate the pickup roller in a sheet supply direction, and switches the switchable transmission mechanism between the first state, when a sheet is supplied from a sheet holding portion, and the second state, when the sheet is fed by the feeder roller.
Abstract: A paper pick-up mechanism for a feeder includes a pick-up roller, a pick-up roller shaft, a separation roller, a transmission shaft, a gear set and a transmission gear shaft. Two one-way clutches are respectively coupled to the transmission shaft and the transmission gear shaft in parallel. When the transmission shaft is rotated in a direction opposite to a sheet-feeding direction, the gear set, through the cooperation of the two one-way clutches are used as a planetary gear set to lift up the pick-up roller.
August 28, 2008
Date of Patent:
May 24, 2011
Thomas Sheng, Sung-Po Cheng, Ku-Ming Chen