JP2008094509A - Feeding device, recording device, liquid injection device, and feeding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeding device capable of moving a hopper securely even when strengthening energizing force of the hopper. <P>SOLUTION: This feeding device 144 is constituted in such a way that either of a first motor 104 and a second motor 377 lets the hopper 101 approach and move onto a feeding roller side, a return lever 341 for returning the recorded mediums P fed in an overlapped manner into the hopper 101 is turned, and the other of the first motor 104 and the second motor 377 is moved against energizing force of an energizing means 230 into the direction for separating the hopper 101 from a feeding roller 311 when turning the return lever 341. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, the movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the feeding roller rotated by the driving force of the first motor is the hopper. A feeding device that picks up a recording medium placed on the recording medium and feeds it to a downstream conveying roller, and the conveying roller that is rotated by the driving force of a second motor conveys the recording medium to a recording area, the feeding The present invention relates to a recording apparatus, a liquid ejecting apparatus, and a feeding method including the apparatus.

Here, the liquid ejecting apparatus refers to an ink jet recording apparatus, a copying machine, a facsimile, or the like that performs recording on a recording material by ejecting ink from a recording head as a liquid ejecting head to a recording material such as recording paper. In addition to the recording apparatus, instead of ink, a liquid corresponding to a specific application is ejected from the liquid ejecting head corresponding to the recording head to the ejected material corresponding to the recording material, and the liquid is ejected to the ejected material. Used to include the device to be attached. In addition to the recording head described above, the liquid ejecting head includes a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, an electrode material used for forming an electrode such as an organic EL display and a surface emitting display (FED) ( Examples thereof include a conductive paste) ejection head, a bio-organic matter ejection head used for biochip manufacturing, and a sample ejection head that ejects a sample as a precision pipette.
The recording apparatus includes types such as an ink jet printer, a wire dot printer, a laser printer, a line printer, a copying machine, and a facsimile.

  Conventionally, there has been a recording apparatus in which a sheet is set in a swingable hopper, and a feeding roller that is rotated by driving a feeding motor is provided to pick up the sheet. The hopper is urged by the urging force of the spring in the direction in which the hopper approaches the feeding roller, that is, in the direction of raising the hopper. Further, the movement of the hopper away from the feeding roller, that is, the hopper lowering is configured to be executed by the driving force of the feeding motor. In other words, the load on the feeding motor is greater when the hopper is lowered than when the hopper is raised.

In addition, the rotational movement of the return lever that returns the paper double-fed by the feeding roller to the hopper is also executed by the driving force of the feeding motor. Then, the turning movement of the return lever is configured to be executed when the hopper is lowered.
FIG. 6 is a graph showing the load of the feeding motor of the conventional feeding device. The vertical axis of the graph is the load torque, while the horizontal axis is the driving time of the feeding roller.

  As shown in FIG. 6, when the feeding roller rotates from the reset position by driving the feeding motor, the hopper lever is raised by the urging force of the hopper spring. Here, the “reset position” refers to a posture position at which the chord portion of the side-view D-type feeding roller faces the guide surface portion of the paper. Then, since the paper placed on the hopper comes into contact with the rotating feeding roller, the paper feeding is started. Specifically, the feeding roller picks up a sheet placed on the hopper, and the picked-up sheet is provided so that only one sheet gets over the bank by so-called bank separation. Then, the driving force of the feeding motor rotates the feeding roller to feed only one sheet to the conveying roller.

  Further, the driving force of the feeding motor starts the lowering operation of the hopper against the urging force of the hopper spring. At this time, the amount by which the hopper spring contracts increases as the hopper descends. Accordingly, the load on the feeding motor gradually increases. Then, during the hopper lowering operation section, the operation of the return lever for pushing back the double fed paper to the hopper side is started by the driving force of the feeding motor. Therefore, the load on the feeding motor is further increased. Thereafter, when the return lever operation and the hopper lowering operation are completed, the load on the feeding motor is reduced.

As described above, the load of the feeding motor is concentrated when the hopper is lowered.
As a conventional technique for reducing the load on the motor, there is one in which the rotational speed of the drive motor is changed in order to eliminate the rotational torque of the drive motor of the transport roller (for example, Patent Document 1).
JP 9-220835 A

  However, it is conceivable to increase the number of sheets that can be set in order to reduce the number of sheets set in consideration of user convenience. In such a case, it is necessary to increase the spring force for urging the hopper in order to press the hopper loaded with an increased amount of paper against the feeding roller. When the spring force is increased, the load on the feeding motor is further increased. Therefore, the conventional technology for reducing the motor load may not be able to reduce the load sufficiently.

  The present invention has been made in view of such a situation, and the problem is a feeding device that can reliably move the hopper even when the urging force of the hopper is increased, It is an object to provide a recording apparatus and a liquid ejecting apparatus including the feeding device, and a feeding method.

  In order to achieve the above object, the feeding device according to the first aspect of the present invention moves a movable hopper biased by the biasing means toward the feeding roller by the biasing force of the biasing means, The feeding roller that rotates by the driving force of the first motor picks up the recording medium placed on the hopper and feeds it to the downstream conveying roller, and the conveying roller that rotates by the driving force of the second motor A feeding device for transporting a recording medium to a recording area, wherein either one of the first motor and the second motor has a return lever capable of returning the double-recorded recording medium to the hopper. When rotating and rotating the return lever, the other of the first motor and the second motor is configured to move the hopper against the biasing force in a direction away from the feeding roller. is being done And features.

  According to the first aspect of the present invention, either one of the first motor and the second motor rotates a return lever that can return the multi-fed recording medium to the hopper, When the return lever is rotated, the other of the first motor and the second motor is configured to move the hopper against the urging force in a direction away from the feeding roller. That is, the load of the rotation of the return lever and the load of the separation movement of the hopper, which are loads of the motor, are configured to be distributed to each of the first motor and the second motor. Therefore, the load on one motor is reduced, and there is no possibility that the load is concentrated on only one motor. As a result, the risk of so-called torque over exceeding the allowable load of the motor can be reduced.

  In the feeding device according to the second aspect of the present invention, the movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the driving force of the first motor is used. The rotating feeding roller picks up the recording medium placed on the hopper and feeds it to the downstream conveying roller, and the conveying roller rotated by the driving force of the second motor moves the recording medium to the recording area. A feeding device for conveying, wherein either one of the first motor and the second motor rotates a return lever capable of returning the double-fed recording medium to the hopper, and the return lever The first motor and the second motor are configured to move the hopper against the urging force in a direction away from the feeding roller when rotating.

  According to the second aspect of the present invention, when the return lever is rotated, the first motor and the second motor move against the biasing force in a direction away from the feeding roller. It is configured to let you. That is, the load of the hopper separating movement is distributed to both the first motor and the second motor. This is effective when the urging force is large.

According to a third aspect of the present invention, in the first or second aspect, a power transmission switching device is provided in a power transmission path from the motor to the hopper.
According to the 3rd aspect of this invention, in addition to the effect similar to the 1st or 2nd aspect, the power transmission switching apparatus is provided in the power transmission path | route from a motor to the said hopper. Therefore, the first motor and the second motor can transmit power to the hopper only when the hopper moves away.

A recording apparatus according to a fourth aspect of the present invention performs recording by a recording head on a recording medium that is picked up and fed from a loaded recording medium, and on the recording medium that is fed from the feeding part. And a recording unit, wherein the feeding unit includes the feeding device according to any one of the first to third aspects.
According to the fourth aspect of the present invention, the feeding unit includes the feeding device according to any one of the first to third aspects. Therefore, in the recording apparatus, the first to third The effect similar to any aspect can be acquired.

  In the liquid ejecting apparatus according to the fifth aspect of the present invention, the movable hopper urged by the urging means is moved closer to the feeding roller by the urging force of the urging means, and the driving force of the first motor is used. The rotating feed roller picks up the liquid ejecting medium placed on the hopper and feeds it to the downstream transport roller, and the transport roller rotated by the driving force of the second motor removes the liquid ejecting medium from the liquid. A liquid ejecting apparatus comprising: a feeding unit that transports to an ejecting region; and a liquid ejecting unit that ejects a liquid onto a liquid ejecting medium in the liquid ejecting region, wherein any of the first motor and the second motor One of them rotates a return lever capable of returning the liquid jetting medium that has been multifed to the hopper, and when rotating the return lever, the other of the first motor and the second motor is: The hopper It is configured in a direction away from the feed roller to move against the biasing force, characterized in that is.

  In the liquid ejecting apparatus according to the sixth aspect of the present invention, the movable hopper urged by the urging means is moved closer to the feeding roller by the urging force of the urging means, and the driving force of the first motor is used. The rotating feed roller picks up the liquid ejecting medium placed on the hopper and feeds it to the downstream transport roller, and the transport roller rotated by the driving force of the second motor removes the liquid ejecting medium from the liquid. A liquid ejecting apparatus comprising: a feeding unit that transports to an ejecting region; and a liquid ejecting unit that ejects a liquid onto a liquid ejecting medium in the liquid ejecting region, wherein any of the first motor and the second motor On the other hand, when a return lever capable of returning the liquid jetting medium that has been multifed to the hopper is rotated, and when the return lever is rotated, the first motor and the second motor are connected to the hopper. The feeding b Characterized in that it is configured to move against the biasing force in a direction away from La.

In the feeding method according to the seventh aspect of the present invention, the movable hopper urged toward the feeding roller by the urging means is moved closer to the feeding roller by the urging force of the urging means. A feeding step of rotating the feeding roller by a driving force of the first motor, picking up a recording medium placed on the hopper and feeding it to a conveying roller on the downstream side; driving of the second motor The feeding roller is rotated by force to convey the recording medium to the recording area, and the return lever is rotated by the driving force of one of the first motor and the second motor to feed the feeding medium. A return lever turning step for returning the recording medium that has been double fed in the process to the hopper, and at least a part of the return lever turning step overlaps in time, and the first motor and the front of the return lever turning step It said hopper by other driving force of the second motor, characterized in that it comprises a a first hopper spacing step of moving in a direction away from the feed roller against the urging force.
According to the 7th aspect of this invention, the effect similar to a 1st aspect can be obtained.

In the feeding method according to the eighth aspect of the present invention, the movable hopper urged toward the feeding roller by the urging means is moved closer to the feeding roller by the urging force of the urging means. A feeding step of rotating the feeding roller by a driving force of the first motor, picking up a recording medium placed on the hopper and feeding it to a conveying roller on the downstream side; driving of the second motor The feeding roller is rotated by force to convey the recording medium to the recording area, and the return lever is rotated by the driving force of one of the first motor and the second motor to feed the feeding medium. A return lever turning step for returning the recording medium that has been double fed in the process to the hopper, and at least a part of the return lever turning step overlaps in time, and the first motor and the front of the return lever turning step The hopper by driving force of the second motor, characterized in that it comprises a second hopper spacing step of moving in a direction away from the feed roller against the urging force.
According to the 8th aspect of this invention, the effect similar to a 2nd aspect can be acquired.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view showing an outline of a recording apparatus which is an example of a liquid ejecting apparatus according to the invention. FIG. 2 is an overall plan view showing an outline of the recording apparatus according to the present invention.
On the back side of the main body of the recording apparatus 100, a hopper 101 as a placement portion on which the paper P as a recording medium is placed and stacked swings upward on fulcrums (241, 241) (see FIG. 4). It is provided as possible. The paper P placed on the top of the hopper 101 is fed by the feeding unit 144 to the recording unit side that is downstream in the transport direction. Specifically, the loaded paper P is picked up by a feeding roller 311 (see FIG. 3) driven by a feeding motor 104 and is guided in the left and right paper guides 103 and 103 in the downstream in the transport direction. It is fed to the conveyance roller pair 330 (see FIG. 3) on the side. The paper P fed to the conveyance roller pair 330 is further conveyed to the recording unit 143 on the downstream side in the conveyance direction by a conveyance driving roller 331 (see FIG. 3) driven by a conveyance motor 377 (see FIG. 4). The

  The recording unit 143 includes a platen 105 that supports the paper P from below and a carriage 107 that is provided to face the upper side of the platen 105. Among them, the carriage 107 is driven by the carriage motor 102 while being guided by a carriage guide shaft (not shown) extending in the main scanning direction which is the width direction of the paper P to be conveyed. Further, a recording head 106 that discharges ink toward the paper P is provided on the bottom surface of the carriage 107. The paper P recorded by the recording unit 143 is further conveyed downstream, and is discharged from the front side of the recording apparatus 100 by a paper discharge roller (not shown).

  Further, an ink cartridge (not shown) is loaded below the main body of the recording apparatus 100, and ink is supplied to an ink supply path (not shown) via an ink supply needle (not shown). Further, the ink is supplied to the recording head 106 of the carriage 107 via the ink supply tube 110. When the recording head 106 is flushed and cleaned, ink is ejected and sucked in the ink suction device 200 that is provided on the first digit side and maintains the ejection characteristics of the recording unit 143. The ink suction device 200 includes a cap unit 204, and is configured to seal the recording head 106 by moving the cap unit 204 in the vertical direction.

FIG. 3 is a side view showing an outline of the feeding device according to the present invention. FIG. 4 is a plan view showing a power transmission path of the feeding device according to the present invention.
As shown in FIGS. 3 and 4, the feeding unit 144, which is an example of a feeding device, is provided with a side-view D-type feeding roller 311 that picks up the paper P from the hopper 101 as described above. A separating unit 312 that separates the multi-feed paper P ′ and prevents multi-feed is provided. Further, a guide surface portion 320 that guides the paper P fed by the feed roller 311 to the transport roller pair 330 is provided.
Here, the separation unit 312 of the present embodiment employs so-called bank separation, but it is needless to say that the separation unit 312 may be a so-called retard roller that rotates with a constant load.

  Further, the hopper 101 has hopper fulcrum shafts 241 and 241 above and is provided so as to be swingable with respect to the base portion 240. The hopper 101 is provided so as to be able to execute an ascending operation that approaches the feeding roller 311 and a descending operation that separates the hopper 101 by swinging the hopper lever portion 211. Specifically, the first hopper cam portion 221 provided on the first hopper cam shaft 220 rotates counterclockwise in FIG. 3, whereby power is transmitted to the hopper cam follower 212 provided on the hopper lever shaft 210.

  A hopper lever portion 211 provided on the hopper lever shaft 210 is provided to rotate clockwise in FIG. 3 against the urging force of the hopper spring 230 to lower the hopper 101. When the first hopper cam shaft 220 is further rotated counterclockwise after the lowering operation of the hopper 101 is completed, the first hopper cam portion 221 and the hopper cam follower 212 are disengaged. Accordingly, the hopper lever portion 211 rotates counterclockwise by the urging force of the hopper spring 230 as indicated by a chain line. And the hopper 101 is comprised so that it may be pushed by the hopper lever part 211 and may perform a raise operation | movement.

  Further, a pair of return lever portions 341 and 341 provided in the width direction of the paper P is provided so as to be able to protrude from the guide surface portion 320 by rotating, and can push back the double-fed paper P ′ to the hopper 101. It is provided so that it can. Specifically, the return lever cam portion 351 provided on the return lever cam shaft 350 rotates counterclockwise in FIG. 3, whereby power is transmitted to the return lever cam follower 342 provided on the return lever shaft 340. Then, the return lever portions 341 and 341 provided on the return lever shaft 340 rotate clockwise in FIG. 3 against the urging force of the return lever spring 360 to push back the paper P ′ that has been multi-fed to the hopper 101. It is provided as follows. After the return lever portions 341 and 341 have been pushed back, when the return lever cam shaft 350 is further rotated counterclockwise, the return lever cam portion 351 and the return lever cam follower 342 are disengaged. Accordingly, the return lever portions 341 and 341 are rotated counterclockwise by the urging force of the return lever spring 360 as indicated by a chain line, and are retracted from the guide surface portion 320.

Next, the structure of power transmission to the hopper lever portion 211 and the return lever portions 341 and 341 will be described.
As shown in FIG. 4, the feeding motor 104 and the conveying motor 377 are controlled by the control unit 380. When the control unit 380 drives the feeding motor 104, the first pinion 370 provided on the shaft of the feeding motor 104 rotates, and power is transmitted to the first gear 369 that circumscribes the first pinion 370. Then, power is transmitted from a second gear 371 provided integrally with the first gear 369 to a third gear 372 that circumscribes the second gear. Further, power is transmitted from the third gear 372 to the fourth gear 373 circumscribing the third gear.

Here, the fourth gear 373 is provided integrally with a return lever cam shaft 350 that is integrally provided with a return lever cam portion 351. Therefore, as described above, the return lever cam portion 351 engages with the return lever cam follower 342, and the return lever portions 341 and 341 can be rotated clockwise in FIG.
It is assumed that the rotation direction of the first pinion 370 at this time is a direction in which the return lever cam shaft 350 is rotated counterclockwise in FIG. At this time, although not shown, the feeding roller 311 is configured to rotate clockwise in FIG. 3 by the power of the feeding motor 104.

On the other hand, when the control unit 380 drives the transport motor 377, the second pinion 374 provided on the shaft of the transport motor 377 rotates and power is transmitted to the fifth gear 375 that circumscribes the motor. Here, the fifth gear 375 is provided on the first hopper camshaft. Therefore, as described above, the hopper cam portion can be engaged with the hopper cam follower 212 and the hopper lever portion 211 can be rotated clockwise in FIG.
A third pinion 376 is provided on the other side of the shaft of the transport motor 377, and is configured to transmit power to the transport drive roller 331 of the transport roller pair 330. The first hopper camshaft 220 is provided with a known clutch device 378 that can switch the power transmission state from the fifth gear 375. Therefore, even when the transport driving roller 331 is rotating, the raising operation and the lowering operation of the hopper 101 can be executed independently.

Next, the timing of power transmission to the hopper lever portion 211 and the return lever portions 341 and 341 will be described. FIG. 5 is a graph showing the motor-specific loads of the feeding motor and the conveying motor. Here, the vertical axis of the graph represents the motor load, and the horizontal axis represents the drive time based on the feeding motor.
As shown in FIG. 5, the feed roller 311 is rotated in the clockwise direction in FIG. 3 by the driving force of the feed motor 104 from the state where the feed roller 311 is in the reset position, and the reset position state is released. That is, the power transmission state of the clutch (not shown) to the feeding roller 311 is switched to the transmission state. Here, the “reset position” refers to the position of the feed roller 311 where the chord part 311a of the D-type feed roller 311 in side view faces the guide surface part 320.

Further, the first hopper cam portion 221 and the hopper cam follower 212 are disengaged by driving the conveyance motor 377. At this time, the hopper 101 is raised by the urging force of the hopper spring 230.
The paper P placed on the hopper 101 is pressed against the feeding roller 311 that has started to rotate, whereby the paper P is picked up. That is, feeding is started.
When the feeding roller 311 further rotates, the leading end of the picked up paper P is abutted against the separation unit 312. Then, by so-called bank separation, only the uppermost sheet P gets over the separation unit 312 which is the bank.

When the leading edge of the paper P is sent to the conveyance roller pair 330, skew removal is executed. Thereafter, the conveyance driving roller 331 is rotated by the driving force of the conveyance motor 377 and conveys the paper P to the recording unit 143.
Then, before the feeding roller 311 returns to the reset position again, the lowering operation of the hopper 101 is started. The lowering operation of the hopper 101 is performed by rotating the hopper lever portion 211 in the clockwise direction in FIG. 3 against the urging force of the hopper spring 230 by the driving force of the conveying motor 377 as described above.

After the lowering operation of the hopper 101 is started, the paper return operation of the return lever portions 341 and 341 is started. The sheet returning operation is performed by rotating the return lever portions 341 and 341 in the clockwise direction in FIG. 3 against the urging force of the return lever spring 360 by the driving force of the feeding motor 104 as described above.
Thereafter, the sheet returning operation and the lowering operation of the hopper 101 are completed.
Then, the power transmission to the feeding roller 311 is cut off by a clutch (not shown), and the reset position is entered again.

  As described above, the lowering operation of the hopper 101 and the sheet returning operation of the return lever portions 341 and 341 are configured to overlap in time. And each operation | movement is comprised so that each of the motor 104 for conveyance and the motor 377 for conveyance transmits power independently. Therefore, there is no possibility that the load is concentrated on only one motor. In other words, the motor load is configured to be distributed to a plurality of motors including the feeding motor 104 and the conveying motor 377. As a result, even if the hopper spring 230 is strengthened to increase the number of sheets P that can be placed and stacked on the hopper 101, the lowering operation of the hopper 101 is executed without changing to a high output motor. can do.

A second hopper cam shaft (not shown) having a second hopper cam portion (not shown) that can be engaged with the hopper cam follower 212 in the same manner as the first hopper cam portion 221 is integrated with the return lever cam shaft 350. It may be provided. In this case, the driving force of the conveying motor 377 and the driving force of the feeding motor 104 are transmitted to the hopper lever portion 211. That is, the conveyance motor 377 and the feeding motor 104 can execute the work load of the lowering operation of the hopper 101 evenly distributed.
In the above-described embodiment, the feeding motor 104 performs the sheet returning operation, and the conveying motor 377 performs the lowering operation of the hopper 101. However, the feeding motor 104 lowers the hopper 101. Needless to say, the conveyance motor 377 may perform the sheet returning operation.

  The feeding device (144) of the present embodiment moves the hopper 101, which is urged and moved by the hopper spring 230 as the urging means, to move closer to the feeding roller by the urging force of the hopper spring 230, so that the first motor A feeding roller 311 that is rotated by the driving force of the feeding motor 104 picks up a sheet P as a recording medium placed on the hopper 101 and feeds it to a pair of conveyance rollers 330 as a conveyance roller on the downstream side. A feeding device (144) in which a conveyance driving roller 331 of a conveyance roller pair 330 rotated by a driving force of a conveyance motor 377 as a second motor conveys a sheet P to a recording unit 143 as a recording area. One of the feed motor 104 and the transport motor 377 is a return lever as a return lever that can return the multi-feed paper P ′ to the hopper 101. When the bar portions 341 and 341 are rotated and the return lever portions 341 and 341 are rotated, the other one of the feeding motor 104 and the conveying motor 377 is a hopper spring in a direction in which the hopper 101 is separated from the feeding roller 311. 230 is configured to move against 230.

  Further, the feeding device (144) of the present embodiment moves the hopper 101, which is urged and moved by the hopper spring 230 as the urging means, to approach the feeding roller side by the urging force of the hopper spring 230, A feeding roller 311 rotated by the driving force of a feeding motor 104 as one motor picks up a sheet P as a recording medium placed on the hopper 101 and feeds it to a pair of conveyance rollers 330 as a conveyance roller on the downstream side. A feeding device (144) for feeding a sheet P to a recording unit 143 as a recording area by a conveyance driving roller 331 of a conveyance roller pair 330 that is rotated by a driving force of a conveyance motor 377 as a second motor. Any one of the feeding motor 104 and the conveying motor 377 moves the hopper 101 closer to the feeding roller side, and hops the multi-feed paper P ′. When the return lever portions 341 and 341 that can be returned to 101 are rotated and the return lever portions 341 and 341 are rotated, the feeding motor 104 and the conveying motor 377 move the hopper 101 from the feeding roller 311. It is configured to move against the hopper spring 230 in the direction of separation.

Furthermore, in the feeding device (144), the fifth gear 375 of the power transmission path from the conveyance motor 377 to the hopper 101 is provided with a clutch device 378 as a power transmission switching device. .
The recording apparatus 100 according to the present embodiment includes a feeding unit 144 that picks up and feeds the loaded paper P, and a recording unit 143 that performs recording on the paper P fed from the feeding unit 144 by the recording head 106. And the feeding unit 144 includes the feeding device (144).

  The feeding method of the present embodiment is such that the movable hopper 101 urged toward the feeding roller by a hopper spring 230 as urging means is moved closer to the feeding roller 311 by the urging force of the hopper spring 230. The feeding roller 311 is rotated by the approaching stroke and the driving force of the feeding motor 104 as the first motor, and the sheet P placed on the hopper 101 is picked up and fed to the downstream conveying roller pair 330. A transporting process, a transporting process of transporting the paper P to the recording area by rotating the transporting drive roller 331 of the transporting roller pair 330 by the driving force of the transporting motor 377 as the second motor, and the transporting motor 104 and the transporting motor The return lever portions 341 and 341 are rotated by the driving force of one of the motors 377, and the paper P ′ that has been multi-fed in the feeding process is relieved. The return lever rotating step for returning to 101 and the return lever rotating step at least partially overlap in time, and the hopper is driven by the other driving force of the feeding motor 104 and the conveying motor 377 in the return lever rotating step. And a first hopper separation step of moving 101 in a direction away from the feeding roller 311 against the urging force of the hopper spring 230.

  Further, in the feeding method of the present embodiment, the movable hopper 101 urged toward the feeding roller by the hopper spring 230 as the urging means is moved closer to the feeding roller 311 by the urging force of the hopper spring 230. The feeding roller 311 is rotated by the hopper approaching step and the driving force of the feeding motor 104 as the first motor, and the paper P placed on the hopper 101 is picked up and fed to the downstream conveying roller pair 330. A feeding process, a transporting process of rotating the transport driving roller 331 of the transporting roller pair 330 by the driving force of the transporting motor 377 as the second motor to transport the paper P to the recording area, a feeding motor 104, and The return lever portions 341 and 341 are rotated by the driving force of one of the transport motors 377, and the paper P ′ that has been double-fed in the feeding step The return lever turning step for returning to the hopper 101 and the return lever turning step at least partially overlap in time, and the hopper 101 is driven by the driving force of the feeding motor 104 and the conveying motor 377 in the return lever turning step. And a second hopper separation step in which the hopper spring 230 is moved in a direction away from the feeding roller 311 against the urging force of the hopper spring 230.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

1 is an overall perspective view showing an outline of a recording apparatus according to the present invention. 1 is an overall plan view showing an outline of a recording apparatus according to the present invention. The side view which shows the outline of the feeding apparatus which concerns on this invention. The top view which shows the power transmission path | route of the feeder which concerns on this invention. The graph which shows the load according to motor of the feeder which concerns on this invention. The graph which shows the motor load of the feeder in a prior art.

Explanation of symbols

100 recording device, 101 hopper, 102 carriage motor, 103 paper guide,
104 feeding motor, 105 platen, 106 recording head, 107 carriage,
110 Ink supply tube, 143 recording unit, 144 feeding unit,
200 ink suction device, 204 cap part, 210 hopper lever shaft,
211 hopper lever part, 212 hopper cam follower, 220 first hopper cam shaft,
221 First hopper cam portion, 230 hopper spring, 240 base portion,
241 Hopper fulcrum shaft, 311 feeding roller, 311a string portion, 312 separation portion,
320 guide surface portion, 330 transport roller pair, 331 transport drive roller,
340 Return lever shaft, 341 Return lever part, 342 Return lever cam follower,
350 Return lever cam shaft, 351 Return lever cam part, 360 Return lever spring,
369 1st gear, 370 1st pinion, 371 2nd gear, 372 3rd gear,
373 4th gear, 374 2nd pinion, 375 5th gear, 376 3rd pinion,
377 transport motor, 378 clutch device, 380 control unit, P paper,
P 'Double-fed paper

Claims (8)

The movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the feeding roller rotated by the driving force of the first motor is placed on the hopper. A feeding device that picks up the recorded medium and feeds it to a conveying roller on the downstream side, and the conveying roller rotated by the driving force of the second motor conveys the recording medium to a recording area,
Either one of the first motor and the second motor rotates a return lever capable of returning the multi-fed recording medium to the hopper,
When rotating the return lever, the other of the first motor and the second motor is configured to move the hopper against the biasing force in a direction away from the feeding roller. A feeder characterized by. The movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the feeding roller rotated by the driving force of the first motor is placed on the hopper. A feeding device that picks up the recorded medium and feeds it to a conveying roller on the downstream side, and the conveying roller rotated by the driving force of the second motor conveys the recording medium to a recording area,
Either one of the first motor and the second motor rotates a return lever capable of returning the multi-fed recording medium to the hopper,
When the return lever is rotated, the first motor and the second motor are configured to move the hopper against the biasing force in a direction away from the feeding roller. A feeding device.   3. The feeding apparatus according to claim 1, wherein a power transmission switching device is provided in a power transmission path from a motor to the hopper. A feeding unit for picking up and feeding the recording medium placed thereon;
A recording unit that performs recording on a recording medium fed from the feeding unit by a recording head,
The recording apparatus, wherein the feeding unit includes the feeding device according to any one of claims 1 to 3. The movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the feeding roller rotated by the driving force of the first motor is placed on the hopper. A liquid feeding medium that picks up and feeds the liquid ejection medium to the downstream conveyance roller, and the conveyance roller that is rotated by the driving force of the second motor conveys the liquid ejection medium to the liquid ejection area; A liquid ejecting apparatus including a liquid ejecting unit that ejects liquid onto a liquid ejecting medium in a region,
Either one of the first motor and the second motor rotates a return lever capable of returning the multi-fed liquid jetting medium to the hopper,
When rotating the return lever, the other of the first motor and the second motor is configured to move the hopper against the biasing force in a direction away from the feeding roller. A liquid ejecting apparatus. The movable hopper urged by the urging means is moved closer to the feeding roller side by the urging force of the urging means, and the feeding roller rotated by the driving force of the first motor is placed on the hopper. A liquid feeding medium that picks up and feeds the liquid ejection medium to the downstream conveyance roller, and the conveyance roller that is rotated by the driving force of the second motor conveys the liquid ejection medium to the liquid ejection area; A liquid ejecting apparatus including a liquid ejecting unit that ejects liquid onto a liquid ejecting medium in a region,
Either one of the first motor and the second motor rotates a return lever capable of returning the multi-fed liquid jetting medium to the hopper,
When the return lever is rotated, the first motor and the second motor are configured to move the hopper against the biasing force in a direction away from the feeding roller. A liquid ejecting apparatus. A hopper approach stroke for moving the movable hopper biased toward the feeding roller by the biasing means to approach the feeding roller by the biasing force of the biasing means;
A feeding step of rotating the feeding roller by a driving force of a first motor, picking up a recording medium placed on the hopper, and feeding the recording medium to a downstream conveying roller;
A conveying step of rotating the conveying roller by a driving force of a second motor to convey a recording medium to a recording area;
A return lever rotating step of rotating the return lever by the driving force of one of the first motor and the second motor and returning the recording medium double-fed in the feeding step to the hopper;
At least partly overlaps with the return lever turning step, and the hopper is resisted against the biasing force by the other driving force of the first motor and the second motor in the return lever turning step. A first hopper separation step of moving in a direction away from the feeding roller. A hopper approach stroke for moving the movable hopper biased toward the feeding roller by the biasing means to approach the feeding roller by the biasing force of the biasing means;
A feeding step of rotating the feeding roller by a driving force of a first motor, picking up a recording medium placed on the hopper, and feeding the recording medium to a downstream conveying roller;
A conveying step of rotating the conveying roller by a driving force of a second motor to convey a recording medium to a recording area;
A return lever rotating step of rotating the return lever by the driving force of one of the first motor and the second motor and returning the recording medium double-fed in the feeding step to the hopper;
At least partly overlaps with the return lever turning step, and the hopper is fed against the biasing force by the driving force of the first motor and the second motor in the return lever turning step. A second hopper separation step of moving in a direction away from the roller.

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