JP2010024020A - Automatic feeder, recorded material carrier device, and electronic device provided with the automatic feeder or the recorded material carrier device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic feeder and a recorded material carrier device, capable of correcting skew of a recorded material without causing a roller trace or a flaw by slip on the recorded material. <P>SOLUTION: A feeding roller 74 is supported on a base 701 of the automatic feeder 70 so as to be rotatable and displaceable in a direction crossing a feeding direction Y. A coil spring 77 is provided in a contracted state between spring stopping members 771 and 772. A feeding roller shaft 741 is energized in a direction of getting close to a right edge guide 73. A "displacement mechanism" for displaying the feeding roller 74 in a direction of separating from the right edge guide 73 includes a cam groove 744 provided in the roller shaft 741 and a cam groove guide 78 to be engaged with the cam groove. The cam groove guide 78 is supported on the base 701, and fixed to a position in which a sliding projection 781 is fitted into and engaged the cam groove 744. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automatic feeding device for automatically feeding a recording material such as recording paper to an electronic device such as a printer, a recording material conveying device for conveying the recording material after feeding, and the automatic feeding device. Alternatively, the present invention relates to an electronic apparatus provided with a recording material conveyance device.

  2. Description of the Related Art There are known electronic apparatuses including an automatic feeding device that automatically feeds recording materials such as paper one by one, and a recording material conveyance device that conveys a recording material after feeding. For example, a recording device such as an ink jet printer or a laser printer provided with means for executing recording of characters, images, etc. on the recording surface of the recording material, characters and images recorded on the recording surface of the recording material that has been recorded A facsimile, a copier, a scanner device, and the like provided with a reading means.

  In such an automatic feeding device or a recording material transport device, the recording material may be fed or transported in an inclined state with respect to the original feeding direction or transport direction. The inclination of the recording material with respect to the feeding direction or the conveyance direction is generally called skew. For example, in a printer, if a skew exceeding an allowable range occurs when a recording material is fed or conveyed, recording is performed obliquely on the recording surface of the recording material, so that the recording accuracy is greatly reduced. It will be. Further, in a scanner device or the like, an image recorded on a recording material is read obliquely, so that reading accuracy is greatly reduced.

As an example of a conventional technique capable of reducing such a skew of a recording material, a conveying device including a so-called skew roller (also referred to as a skew feeding roller) is known. The skew roller is arranged in a positional relationship in which the rotation axis is inclined at a predetermined angle with respect to a guide surface for guiding the recording material in the conveyance direction in contact with the side edge of the recording material to be conveyed. It is the conveyance roller provided. The recording material transported by the skew roller is transported while the side end abuts the guide surface while the side end abuts the guide surface while proceeding obliquely toward the guide surface before recording or reading is performed. As a result, the posture is corrected along the guide surface, thereby correcting the skew (see, for example, Patent Document 1 or 2).
JP 2003-81489 A JP 2007-314324 A

  However, in the transport device provided with the skew roller, the skew roller rotates at a predetermined angle with respect to the transport direction, whereas the recording material advances in the transport direction along the guide surface. Therefore, a slip always occurs on the contact surface between the outer peripheral surface of the skew roller and the recording material due to an angular difference between the rotation direction of the skew roller and the conveyance direction of the recording material. For this reason, there is a possibility that the recording material may be damaged by a roller mark or slip at a portion where the outer peripheral surface of the skew roller contacts.

  The present invention has been made in view of such a situation, and its problem is an automatic feeding device capable of correcting the skew of the recording material without causing a roller mark or a scratch due to a slip on the recording material. And a recording material transport device.

  To achieve the above object, according to a first aspect of the present invention, there is provided a feeding roller that is rotated by a rotational driving force of a driving force source, and a side end of a recording material that is fed by the rotation of the feeding roller. A feeding guide surface for guiding the recording material in the feeding direction in contact with the recording material, and the feeding roller so as to be able to rotate and to be displaceable in a direction intersecting the feeding direction. A feeding roller support mechanism for supporting the feeding roller, a biasing mechanism for biasing the feeding roller in a direction approaching the feeding guide surface, and the feeding roller being separated from the feeding guide surface An automatic feeding device including a displacement mechanism that displaces in a direction in which to move.

  The recording material to be fed by the rotation of the feeding roller first moves the feeding roller by the biasing force of the biasing mechanism in the direction approaching the feeding guide surface, so that the side end of the recording material is fed. Contact the surface. The recording material is fed while being slidably contacted with the feeding guide surface by the urging force of the urging mechanism. Therefore, the recording material is fed while the posture is corrected along the feeding guide surface. Become. Therefore, the skew of the recording material can be corrected when the recording material is fed. Further, the feeding roller displaced in the direction approaching the feeding guide surface is returned to the original position by being displaced in a direction away from the feeding guide surface by the displacement mechanism after feeding the recording material. be able to. Therefore, skew correction can be performed for each recording material to be fed.

  That is, the automatic feeding device according to the first aspect of the present invention slides the recording material against the feeding guide surface by displacing the feeding roller itself toward the feeding guide surface. The recording material can be brought into sliding contact with the feeding guide surface without providing a row roller or the like. Accordingly, it is possible to greatly reduce the possibility that a roller mark, a scratch due to slip, or the like will occur on the recording material during feeding.

  As a result, according to the automatic feeding device described in the first aspect of the present invention, the skew of the recording material can be corrected without causing the recording material to be scratched by a roller mark or a slip. An effect is obtained.

  According to a second aspect of the present invention, in the automatic feeding device according to the first aspect described above, when a plurality of recording materials are sandwiched between an outer peripheral surface and a separation surface of the feeding roller, the feeding is performed. A friction force that is smaller than the friction force generated on the contact surface between the outer peripheral surface of the feeding roller and the recording material and larger than the friction force generated on the contact surface between the recording materials acts on the contact surface between the separation surface and the recording material. An automatic device comprising a separation device, wherein the separation device is provided so that the separation surface can be displaced integrally with the feeding roller in conjunction with or following the displacement of the feeding roller. It is a feeding device.

  According to such a feature, it is possible to reduce the possibility that the correction of the skew of the recording material is hindered by the frictional force acting on the contact surface between the separation surface of the separating device and the recording material. In addition, the relative positional relationship between the outer peripheral surface of the feeding roller and the separation surface of the separating device is always maintained in a constant positional relationship regardless of the displacement position of the feeding roller. Therefore, it is possible to reduce the possibility that the separation accuracy of the recording material by the separation device is lowered due to the feed roller being supported so as to be displaceable.

According to a third aspect of the present invention, in the automatic feeding device according to the first aspect or the second aspect described above, the displacement mechanism is configured so that the feeding roller is interlocked with the rotation of the feeding roller. It is an automatic feeding device characterized by displacing.
According to such a feature, in a series of feeding operations in which the recording material is fed by the rotation of the feeding roller, the feeding is always performed at a constant appropriate timing in a direction away from the feeding guide surface. It becomes possible to displace the roller for use.

According to a fourth aspect of the present invention, in the automatic feeding device according to the third aspect, the feeding operation of one recording material is completed when the feeding roller makes one rotation from the initial rotation position. The automatic feeding device is characterized in that the displacement mechanism displaces the feeding roller at a rotational position where the recording material does not contact the outer peripheral surface of the feeding roller. It is.
According to such a feature, when the feeding roller is displaced in a direction away from the feeding guide surface, due to the displacement of the feeding roller, the recording material before feeding or feeding It is possible to reduce the risk of skew occurring in the recording material after feeding.

According to a fifth aspect of the present invention, there is provided the automatic feeding apparatus according to any one of the first to fourth aspects described above and means for executing recording on a recording material fed by the automatic feeding apparatus or Means for reading information recorded on the recording material fed by the automatic feeding device.
According to the electronic apparatus of the fifth aspect of the present invention, the recording is performed on the recording material fed by the automatic feeding device or the recording material fed by the automatic feeding device. In the electronic apparatus provided with the means for reading the stored information, the effect of the invention according to any one of the first to fourth aspects described above can be obtained.

According to a sixth aspect of the present invention, there is provided a conveyance driving roller that is rotated by a rotational driving force of a driving force source, and a recording material that is conveyed by rotation of the conveyance driving roller in contact with the recording material. A conveyance guide surface for guiding the conveyance drive roller, a conveyance drive roller support mechanism that supports the conveyance drive roller so as to be displaceable in a direction intersecting the conveyance direction, and the conveyance drive roller. A recording material conveying apparatus comprising: an urging mechanism that urges a roller in a direction approaching the conveyance guide surface; and a displacement mechanism that displaces the conveyance drive roller in a direction away from the conveyance guide surface.
According to the recording material conveying apparatus described in the sixth aspect of the present invention, as in the invention described in the first aspect described above, the recording material can be covered without causing a roller mark or a scratch due to slippage. There is an effect that the skew of the recording material can be corrected.

  According to a seventh aspect of the present invention, in the recording material conveyance device according to the sixth aspect described above, a conveyance driven roller that biases the recording material to an outer peripheral surface of the conveyance drive roller, and the conveyance driven roller Is a recording material conveyance device, which is supported so as to be able to be displaced integrally with the conveyance drive roller in conjunction with or following the displacement of the conveyance drive roller.

  According to such a feature, it is possible to reduce the possibility that the correction of the skew of the recording material is hindered by the frictional force acting on the contact surface between the conveyance driven roller and the recording material. Further, the relative positional relationship between the outer peripheral surface of the transport driving roller and the transport driven roller is always maintained in a constant positional relationship regardless of the displacement position of the transport driving roller. Therefore, it is possible to reduce the possibility that the conveyance accuracy of the recording material is reduced due to the conveyance drive roller being supported so as to be displaceable.

According to an eighth aspect of the present invention, there is provided a recording material conveying apparatus according to the sixth aspect or the seventh aspect described above and means for executing recording on a recording material conveyed by the recording material conveying apparatus or Means for reading information recorded on a recording material conveyed by the recording material conveyance device.
According to the electronic apparatus described in the eighth aspect of the present invention, the recording is performed on the recording material conveyed by the recording material conveyance device or the recording material conveyed by the recording material conveyance device. In the electronic device provided with the means for reading the information, the operational effects of the invention described in the sixth aspect or the seventh aspect described above can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, and various modifications are possible 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.

<Schematic configuration of inkjet printer>
First, a schematic configuration of an inkjet printer 50 as an “electronic device” according to the present invention will be described with reference to FIG.
FIG. 1 is a side view of an essential part illustrating a schematic configuration of an inkjet printer 50.

  An ink jet printer 50 as an “electronic device” according to the present invention includes an automatic feeding device 70 for feeding a recording paper P as a “recording material” into the ink jet printer 50. The ink jet printer 50 includes a transport driving roller 51 and a transport driven roller 52 as a “recording material transport device” for transporting the recording paper P supported by the platen 53 in the transport direction Y. Further, the ink jet printer 50 includes a recording head 62 as means for performing recording by ejecting ink onto the recording surface of the recording paper P supported by the platen 53. Further, the ink jet printer 50 includes a discharge driving roller 54 and a discharge driven roller 55 as means for transporting and discharging the recording paper P after execution of recording in the transport direction Y.

  The automatic feeding device 70 includes a hopper 71, a left edge guide 72, a right edge guide 73, a feeding roller 74, a feeding path 75, and a separation pad 76.

  The hopper 71 is a member on which the recording sheets P are stacked and placed, and is pivotally supported on the base of the automatic feeding device 70 so as to be swingable toward the feeding roller 74. The left edge guide 72 and the right edge guide 73 are supported by the hopper 71 so as to be slidable in the width direction X (direction intersecting the transport direction Y), and according to the size of the recording paper P placed on the hopper 71. Thus, the placement position in the width direction X is regulated. The feeding roller 74 is formed integrally with a feeding roller shaft 741 that is pivotally supported on the base of the automatic feeding device 70, and the feeding roller is rotated by a rotational driving force of a feeding motor (not shown). The shaft 741 rotates by rotating.

  The recording paper P placed on the hopper 71 comes into contact with the outer peripheral surface of the feeding roller 74 when the hopper 71 swings toward the feeding roller 74. The recording paper P in a state of being in contact with the outer peripheral surface of the feeding roller 74 is fed to a portion where the conveyance driving roller 51 and the conveyance driven roller 52 are in contact with each other by the rotation of the feeding roller 74. 75 is fed through.

  A separation pad 76 known as a “separation device” includes a separation surface having a predetermined frictional resistance disposed at a position facing the outer peripheral surface of the feeding roller 74. In a state where a plurality of recording papers P are sandwiched between the outer peripheral surface of the feeding roller 74 and the separation surface of the separation pad 76, the friction force generated on the contact surface between the outer peripheral surface of the feeding roller 74 and the recording paper P is used. A friction force that is smaller and larger than the friction force generated on the contact surfaces of the recording paper P acts on the contact surface between the separation surface of the separation pad 76 and the recording paper P. Thereby, double feeding of the recording paper P is prevented.

  The transport driving roller 51 has a high friction coating on the surface, and rotates by receiving the rotational driving force of a transport motor (not shown). The transport driven roller 52 is pivotally supported so as to be driven to rotate, and is biased by a biasing means such as a spring (not shown) in contact with the outer peripheral surface of the transport driving roller 51. The recording paper P fed by the automatic feeding device 70 is sandwiched between the transport drive roller 51 and the transport driven roller 52 and is transported in the transport direction Y on the platen 53 by the drive rotation of the transport drive roller 51.

  The recording head 62 is disposed at the bottom of the carriage 61, and a number of ejection nozzles (not shown) for ejecting ink onto the recording surface of the recording paper P are disposed on the head surface. The carriage 61 is supported by a carriage guide shaft 56 so as to be able to reciprocate in the width direction X while maintaining a state in which the head surface of the recording head 62 and the recording surface of the recording paper P on the platen 53 are substantially parallel. . The carriage 61 is an endless belt (not shown) hung between a driving pulley (not shown) and a driven pulley (not shown) disposed on a rotating shaft of a carriage driving motor (not shown). Are coupled to each other, and the rotational driving force of the carriage driving motor is transmitted through the endless belt so as to reciprocate in the width direction X.

  The platen 53 has a large number of platen ribs formed along the conveyance direction Y of the recording paper P. The recording paper P conveyed on the platen 53 is supported from the back side by the top surface of the platen rib. In the area of the recording paper P supported by the platen 53, dots are formed on the recording surface by ink ejection from the head surface of the recording head 62, and recording is performed. The distance between the head surface of the recording head 62 and the recording surface of the recording paper P is regulated to an appropriate distance by the top surface of the platen rib.

  The recording paper P conveyed on the platen 53 is configured to eject dots from the head surface of the recording head 62 to the recording surface of the recording paper P while the carriage 61 reciprocates in the width direction X, Recording on the recording surface is executed by alternately repeating the operation of conveying in the conveying direction Y by a predetermined conveying amount by the driving rotation of the driving roller 51. The recording paper P after ink ejection is sandwiched between the discharge driving roller 54 and the discharge driven roller 55, conveyed in the conveyance direction Y by the driving rotation of the discharge driving roller 54, and discharged. A series of these recording controls is executed by a control device (not shown) having a microcomputer control circuit.

<First embodiment of the present invention>
An automatic feeding device 70 according to the present invention will be described with reference to FIGS.

First, the configuration of the automatic feeding device 70 according to the present invention will be described with reference to FIGS.
FIG. 2 is a perspective view of an automatic feeding device 70 according to the present invention, and FIG. 3 is a front view thereof. 4 is an enlarged perspective view of a part of the automatic feeding apparatus 70 according to the present invention, and FIG. 5 is a plan view thereof.

  In the automatic feeding device 70 according to the present invention, the right edge guide 73 functions as a “feeding guide surface”. More specifically, the right edge guide 73 is in contact with the side end of the recording paper P fed by the rotation of the feeding roller 74 and feeds the recording paper P in the feeding direction (the same direction as the transport direction Y. Hereinafter, It is referred to as “feeding direction Y”). In the automatic feeding device 70 according to the present invention, the feeding roller 74 is rotatably supported by the base body 701 of the automatic feeding device 70 and intersects the feeding direction Y (width direction X). It is supported by the base body 701 so as to be displaceable (feed roller support mechanism). More specifically, both ends of the feeding roller shaft 741 of the feeding roller 74 are pivotally supported on the base body 701 so as to be slidable in the width direction X.

  Further, the automatic feeding device 70 according to the present invention includes spring stoppers 771 and 772 and a coil spring 77 as “biasing mechanisms” that bias the feeding roller 74 in a direction approaching the right edge guide 73. ing. The spring stoppers 771 and 772 are donut-shaped members and are pivotally supported by the reduced diameter portion 742 of the feeding roller shaft 741. The coil spring 77 is contracted between the spring retaining member 771 and the spring retaining member 772. Due to the spring force of the coil spring 77, the spring stop member 771 comes into contact with the wall surface of the base body 701, and the spring stop member 772 comes into contact with the spring contact surface 743 of the feeding roller shaft 741. As a result, the feeding roller shaft 741 is urged by the spring force of the coil spring 77 in the direction approaching the right edge guide 73 (the direction indicated by the symbol A).

  Furthermore, the automatic feeding device 70 according to the present invention includes a “displacement mechanism” that displaces the feeding roller 74 in a direction away from the right edge guide 73. The “displacement mechanism” includes a cam groove 744 provided in the feeding roller shaft 741 and a cam groove guide 78 engaged with the cam groove. The cam groove guide 78 is supported by the base body 701, and is fixed at a position where the sliding contact projection 781 enters and engages with the cam groove 744. The cam groove 744 has a cam surface on the inner wall surface on the side where the sliding contact projection 781 of the cam groove guide 78 abuts by the spring force of the coil spring 77. The cam surface includes a first cam surface 745, a second cam surface 746, a third cam surface 747, and a fourth cam surface 748 (FIG. 5).

  The first cam surface 745 is a cam surface for restricting the displacement of the feeding roller 74 in the direction away from the right edge guide 73. The third cam surface 747 is a cam surface for restricting the displacement of the feeding roller 74 in the direction approaching the right edge guide 73. The second cam surface 746 is a downward slope from the first cam surface 745 to the third cam surface 747. The fourth cam surface 748 is an upward slope from the third cam surface 747 to the first cam surface 745. In addition, the second cam surface 746 is a steep slope, and the fourth cam surface 748 is a gentle slope.

  It continues and demonstrates operation | movement of the automatic feeding apparatus 70 based on this invention, referring FIGS.

FIGS. 6A and 6B are a side sectional view (a) and a perspective view (b) of a main part of the automatic feeding device 70, and illustrate an initial state before the recording paper P feeding operation is started.
In the initial state before the recording paper P feeding operation is started, the automatic feeding device 70 is always in a state where the feeding roller 74 is stopped at a predetermined initial rotation position. In this state, the sliding contact projection 781 of the cam groove guide 78 is in contact with the first cam surface 745 of the cam groove 744.

FIG. 7 is a sectional side view (a) and a perspective view (b) of a main part of the automatic feeding device 70, and shows a state immediately after the hopper up operation.
When the feeding roller 74 starts to rotate in the rotation direction indicated by the symbol B, the hopper 71 swings in the direction indicated by the symbol C in conjunction with the rotation of the feeding roller 74. As a result, the recording paper P (not shown) placed on the placement surface of the hopper 71 is pressed against the outer peripheral surface of the feeding roller 74. At this time, the feeding roller shaft 741 is rotated to a position where the sliding contact projection 781 contacts the boundary portion between the first cam surface 745 and the second cam surface 746.

FIG. 8 is a sectional side view (a) and a perspective view (b) of a main part of the automatic feeding device 70, and shows a state when the recording paper P starts to be fed by the rotation of the feeding roller 74. It is illustrated.
The recording paper P in a state of being pressed against the outer peripheral surface of the feeding roller 74 is fed by the feeding roller 74 rotating in the rotation direction indicated by the symbol B. At this time, the feed roller shaft 741 is in a state where the second cam surface 746 has passed through the sliding contact projection 781 and has rotated to a position where the third cam surface 747 can contact the sliding contact projection 781. In this state, the feeding roller shaft 741 can be displaced in the direction indicated by the symbol A by the spring force of the coil spring 77. That is, the feeding roller 74 can be displaced in a direction approaching the right edge guide 73 (feeding guide surface) by the spring force of the coil spring 77.

FIG. 9 is a side sectional view (a) and a perspective view (b) of a main part of the automatic feeding device 70, and illustrates a state in which the recording paper P is being fed by the rotation of the feeding roller 74. It is.
The recording paper P is sandwiched by the leading end in the feeding direction Y reaching the portion where the conveyance driving roller 51 and the conveyance driven roller 52 come into contact with each other when the feeding roller 74 rotates in the rotation direction indicated by B. It is fed to the position to be done. In the meantime, the state in which the third cam surface 747 can come into contact with the sliding contact projection 781 continues. That is, during the feeding of the recording paper P, the feeding roller 74 is continuously displaceable in the direction approaching the right edge guide 73 (feeding guide surface) by the spring force of the coil spring 77.

FIG. 12 schematically illustrates a state in which the recording paper P is being fed by the rotation of the feeding roller 74.
While the recording paper P is being fed by the rotation of the feeding roller 74, the feeding roller 74 can be displaced by the spring force of the coil spring 77 in a direction approaching the right edge guide 73 (feeding guide surface). The state continues (FIGS. 8 and 9). In this state, the feeding roller 74 rotates in the rotational direction indicated by the symbol B and approaches the right edge guide 73 (feeding guide surface) by the spring force of the coil spring 77 (the direction indicated by the symbol A). ). Accordingly, the recording paper P in a state of being skewed at a position away from the right edge guide 73 (state indicated by a phantom line P1) is fed to the right edge guide 73 while being fed in the feeding direction Y. A state in which the ends are in contact with each other (a state indicated by a symbol P2 illustrated by a virtual line) is obtained. Since the recording paper P fed in this state is fed while the side edges are in sliding contact with the right edge guide 73, the recording paper P is fed while its posture is corrected along the right edge guide 73. (State P3 illustrated with phantom lines). Thereby, the skew of the recording paper P can be corrected when the recording paper P is fed.

As described above, the automatic feeding device 70 according to the present invention displaces the feeding roller 74 itself toward the right edge guide 73 to bring the recording paper P into sliding contact with the right edge guide 73 so that the recording paper P can be removed. Remove skew. As a result, it is possible to remove the skew of the recording paper P by sliding the recording paper P on the right edge guide 73 without providing a skew roller or the like. The risk of occurring on the paper P can be greatly reduced.
The spring force of the coil spring 77 is strong enough to prevent the recording paper P from being bent and deformed with the recording paper P in contact with the right edge guide 73 in consideration of the rigidity of the recording paper P. Furthermore, the spring force may be set to a strength that does not cause the right edge guide 73 to move in the direction indicated by the symbol A.

10A and 10B are a side sectional view and a perspective view of a main part of the automatic feeding device 70, showing a state immediately after the recording paper P is fed by the rotation of the feeding roller 74. It is a thing.
After the recording paper P is fed by the rotation of the feeding roller 74, when the feeding roller 74 is further rotated in the direction indicated by the symbol B, the direction indicated by the symbol D is interlocked with the rotation. He hopper 71 swings and retreats. Thereby, the pressing state of the recording paper P against the feeding roller 74 is released. For this reason, the fed recording paper P is in a state where it does not contact the outer peripheral surface of the feeding roller 74 or a state where the recording paper P is in contact with the outer peripheral surface of the feeding roller 74 with almost no contact pressure acting thereon. Therefore, the feeding roller 74 is displaced by the spring force of the coil spring 77 until the third cam surface 747 comes into contact with the sliding contact convex portion 781.

FIG. 11 is a side sectional view (a) and a perspective view (b) of a main part of the automatic feeding device 70, and shows a state when the feeding operation is completed by one rotation of the feeding roller 74. It is a thing.
After the hopper 71 swings and retracts in the direction indicated by the symbol D, the feeding roller 74 further rotates in the direction indicated by the symbol B. As a result, the feed roller shaft 741 is displaced in the direction indicated by symbol E along the fourth cam surface 748 (upward gentle slope) while the fourth cam surface 748 is in sliding contact with the sliding contact projection 781. . In a state where the feeding roller 74 rotates once and rotates to the initial rotation position, the feeding roller 74 is displaced to a position where the first cam surface 745 contacts the sliding contact convex portion 781. As described above, after the recording paper P is fed, the feeding roller 74 can be returned to the original position by the fourth cam surface 748, so that the skew correction can be performed for each fed recording paper P. It becomes possible.

  As described above, according to the automatic feeding device 70 of the present invention, it is possible to correct the skew of the recording paper P without causing the recording paper P to have a roller mark or a scratch due to slipping.

  In addition, the “displacement mechanism” of the automatic feeding device 70 according to the present invention is preferably configured such that the feeding roller 74 is displaced in conjunction with the rotation of the feeding roller 74 as in the above-described embodiment. . Accordingly, in a series of feeding operations for feeding the recording paper P by the rotation of the feeding roller 74, the feeding roller 74 can always be displaced at a constant appropriate timing.

  For example, as in the above embodiment, the feeding roller 74 is displaced to the original position at a rotational position where the recording paper P is not in contact with the outer peripheral surface of the feeding roller 74 (denoted by reference numeral E). It is preferable to displace in the direction. As a result, a skew is generated in the recording paper P before feeding (recording paper P fed in the next feeding operation) or in the recording paper P after feeding due to the displacement of the feeding roller 74. It is possible to reduce the risk of being lost.

  Furthermore, it is preferable that the automatic feeding device 70 according to the present invention supports the separation pad 76 so that it can be displaced integrally with the feeding roller 74 in conjunction with or following the displacement of the feeding roller 74. For example, by supporting the separation pad 76 with an elastic member such as a coil spring, when the recording paper P is displaced in the direction A approaching the right edge guide 73 due to the displacement of the feeding roller 74, the recording paper P The abutting separation pad 76 is also driven and displaced integrally in the same direction.

  As a result, it is possible to reduce the possibility that the correction of the skew of the recording paper P is hindered by the frictional force acting on the contact surface between the separation surface of the separation pad 76 and the recording paper P. Further, the relative positional relationship between the outer peripheral surface of the feeding roller 74 and the separation surface of the separation pad 76 during the feeding of the recording paper P is always a constant positional relationship regardless of the displacement position of the feeding roller 74. Will be maintained. Therefore, it is possible to reduce the possibility that the separation accuracy of the recording paper P by the separation pad 76 is lowered due to the feed roller 74 being supported so as to be displaceable.

  In this embodiment, the automatic feeding device 70 having a centering type movable edge guide structure that always uses the center position in the width direction X of the recording paper P as a reference regardless of the size of the recording paper P has been described as an example. Needless to say, the present invention can also be applied to an automatic feeding device having a movable edge guide structure of a side-by-side type based on one end side in the width direction X.

<Second embodiment of the present invention>
An ink jet printer 50 equipped with a “recording material conveying apparatus” according to the present invention will be described with reference to FIG.

FIG. 13 is a plan view of an essential part of the ink jet printer 50 of the second embodiment.
The basic configuration of the ink jet printer 50 of the second embodiment is the same as that of the ink jet printer 50 illustrated and described in FIG. The following description will focus on the part.

  The platen 53 is provided with a guide portion 531. The guide portion 531, together with the right edge guide 73, functions as a “conveyance guide surface” that contacts the side edge of the recording paper P conveyed by the rotation of the conveyance driving roller 51 and guides the recording paper P in the conveyance direction Y. .

  The basic configuration of the automatic feeder 70 of the second embodiment is the same as that of the first embodiment. Therefore, in FIG. 13, the components other than the right edge guide 73 are not shown for easier viewing of the drawing. However, the automatic feeding device 70 of the second embodiment has a movable edge guide structure of a one-sided type. More specifically, the left edge guide 72 (not shown) is a movable edge guide, and the right edge guide 73 shown in FIG. 13 is a fixed end serving as a reference end when the recording paper P is placed on the hopper 71. It is an edge guide of the formula.

  The transport driving roller 51 has a shaft hole 511 inserted through a bearing hole (not shown) provided in the left side frame 11 constituting the housing frame of the inkjet printer 50, and a bearing hole ( The shaft portion 512 is pivotally supported in a state where the shaft portion 512 is inserted through (not shown). As a result, the transport driving roller 51 is supported so as to be rotatable about the shaft portions 511 and 512 as rotation shafts, and is supported so as to be displaceable in the width direction X (transport driving roller support mechanism).

  Further, a coil spring 514 is contracted between the donut plate-like spring stopper 513 fixed to the transport driving roller 51 and the left side frame 11. The conveyance drive roller 51 is biased in the direction approaching the guide portion 531 and the right edge guide 73 (direction indicated by the symbol A) by the spring force of the coil spring 514 (biasing mechanism). The displacement of the transport drive roller 51 in the direction approaching the guide portion 531 and the right edge guide 73 is restricted at a position where the right end of the transport drive roller 51 contacts the right side frame 12.

  Furthermore, the ink jet printer 50 of the second embodiment includes a swing lever 515 that swings in the direction indicated by the symbol F by the rotational force of a motor (not shown). The swing lever 515 is swung in the direction indicated by the symbol F, and the spring stopper 513 is pushed by the swing lever 515 to move away from the guide portion 531 and the right edge guide 73 (denoted by the symbol E). The transport driving roller 51 can be displaced in the direction (displacement mechanism). The swing of the swing lever 515 is performed by motor control by the control device of the inkjet printer 50.

  Next, rotation control of the conveyance drive roller 51 and swing control of the swing lever 515 by the control device of the ink jet printer 50 will be described with reference to FIG.

  First, in a state before the recording paper P is transported by the rotation of the transport driving roller 51, the state in which the transport driving roller 51 is displaced in the direction indicated by E by the swing lever 515 is held. The leading end of the recording paper P fed by the automatic feeding device 70 is sandwiched between the transport driving roller 51 and the transport driven roller 52 and can be transported in the transport direction Y by the rotation of the transport driving roller 51. After reaching the state, the swing lever 515 is displaced in a direction away from the spring stopper 513.

  In this state, the transport driving roller 51 is displaceable by the spring force of the coil spring 514 in a direction approaching the guide portion 531 of the platen 53 and the right edge guide 73 (transport guide surface). As a result, the recording paper P that is skewed at a position spaced from the guide portion 531 and the right edge guide 73 (state indicated by the phantom line P1) is transported in the transport direction Y by the rotation of the transport drive roller 51. In this state, the side end comes into contact with the guide portion 531 or the right edge guide 73 (a state indicated by a reference symbol P2 shown by an imaginary line). Since the recording paper P conveyed in this state is conveyed while the side edges thereof are in sliding contact with the guide portion 531 and the right edge guide 73, the recording paper P is conveyed while its posture is corrected along the guide portion 531 and the right edge guide 73. (A state indicated by a reference symbol P3 illustrated by a virtual line). Accordingly, the skew of the recording paper P can be corrected when the recording paper P is conveyed.

  As described above, the “recording material conveyance device” according to the present invention displaces the conveyance driving roller 51 itself toward the guide portion 531 and the right edge guide 73, thereby moving the recording paper P into the guide portion 531 and the right edge guide 73. The skew of the recording paper P is removed by sliding contact. As a result, it is possible to remove the skew of the recording paper P by bringing the recording paper P into sliding contact with the guide portion 531 and the right edge guide 73 without providing a skew roller or the like. It is possible to greatly reduce the possibility that the recording paper P is generated during conveyance.

  Further, since the rotation direction of the transport driving roller 51 and the transport direction Y coincide with each other, the skew is also corrected when the recording paper P is fed backward by rotating the transport driving roller 51 in the reverse direction. Therefore, it is also possible to perform a skew removing operation such as biting and discharging by rotating the transport driving roller 51 forward and backward.

  After the trailing end of the recording paper P in the conveyance direction Y is released from the nipping between the conveyance driving roller 51 and the conveyance driven roller 52, the rocking lever 515 is swung in the direction indicated by F to convey the conveyance driving roller. 51 is displaced in the direction indicated by symbol E, and the state after the displacement is maintained. As a result, the transport driving roller 51 can be returned to its original position, so that skew correction can be performed for each transported recording paper P.

  Next, the support structure of the transport driven roller 52 will be described with reference to FIG.

  The transport driven roller 52 is individually supported by the transport driven roller holder 521. The plurality of transport driven roller holders 521 are displaceable in the width direction X while being supported by a support shaft 522 disposed between the left side frame 11 and the right side frame 12 along the width direction X. It is supported. The plurality of transport driven roller holders 521 are encoded by the spring force of the coil spring 524 contracted between the side end of the transport driven roller holder 521 supported closest to the right side frame 12 and the right side frame 12. It is biased in the direction indicated by G. Further, a displacement regulating member 523 is fixed to the support shaft 522. The displacement of the transport driven roller 52 in the direction indicated by the reference symbol G is restricted by the side end of the transport driven roller holder 521 supported closest to the left side frame 11 coming into contact with the displacement regulating member 523.

  The plurality of transport driven rollers 52 supported by such a support structure are integrally moved in the width direction X following the displacement of the transport drive roller 51 when the transport drive roller 51 is displaced in the width direction X. Will be displaced. Accordingly, it is possible to reduce the possibility that the correction of the skew of the recording paper P is hindered by the frictional force acting on the contact surface between the conveyance driven roller 52 and the recording paper P. Further, the relative positional relationship between the outer peripheral surface of the transport driving roller 51 and the transport driven roller 52 is always maintained at a constant positional relationship regardless of the displacement position of the transport driving roller 51. Therefore, it is possible to reduce the possibility that the conveyance accuracy of the recording paper P is lowered due to the conveyance drive roller 51 being supported so as to be displaceable.

  As described above, according to the “recording material conveyance device” according to the present invention, the skew of the recording paper P can be corrected without causing the recording paper P to be damaged by roller marks or slips.

The principal part side view which illustrated schematic structure of the inkjet printer. The perspective view of the automatic feeding apparatus which concerns on this invention. The front view of the automatic feeding apparatus which concerns on this invention. The perspective view which expanded and illustrated a part of automatic feeder concerning this invention. The top view which expanded and illustrated a part of automatic feeder concerning this invention. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. The principal part sectional side view (a) and principal part perspective view (b) of an automatic feeding apparatus. FIG. 6 is a schematic diagram illustrating a state in which recording paper is being fed by rotation of a feeding roller. The principal part top view of the inkjet printer of 2nd Example.

Explanation of symbols

50 Inkjet printer, 51 Conveyance drive roller, 52 Conveyance driven roller, 53 Platen, 54 Discharge drive roller, 55 Discharge driven roller, 56 Carriage guide shaft, 61 Carriage, 62 Recording head, 70 Automatic feeding device, 71 Hopper, 72 Left Edge guide, 73 Right edge guide, 74 Feed roller, 75 Feed path, 76 Separation pad, 77 Coil spring, 78 Cam groove guide, 514, 524 Coil spring, 515 Swing lever, 531 Guide part, 741 Feed Roller shaft, 742 reduced diameter portion, 743 abutting surface, 744 cam groove, 745 first cam surface, 746 second cam surface, 747 third cam surface, 748 fourth cam surface, 781 sliding contact convex portion, P, P1 to P3 Recording paper, X width direction, Y transport direction (feed direction)

Claims (8)

A feeding roller that is rotated by the rotational driving force of the driving force source;
A feeding guide surface for guiding the recording material in the feeding direction in contact with a side end of the recording material fed by the rotation of the feeding roller;
A feed roller support mechanism that rotatably supports the feed roller and supports the feed roller so as to be displaceable in a direction intersecting the feed direction;
An urging mechanism for urging the feeding roller in a direction approaching the feeding guide surface;
An automatic feeding device comprising: a displacement mechanism that displaces the feeding roller in a direction away from the feeding guide surface. The automatic feeding device according to claim 1, wherein when a plurality of recording materials are sandwiched between the outer peripheral surface and the separation surface of the feeding roller, the outer peripheral surface of the feeding roller and the recording material A separation device in which a friction force smaller than a friction force generated on the contact surface and larger than a friction force generated on the contact surface between the recording materials acts on the contact surface between the separation surface and the recording material;
The automatic feeding device, wherein the separating device is provided so that the separating surface can be displaced integrally with the feeding roller in conjunction with or following the displacement of the feeding roller.   3. The automatic feeding device according to claim 1, wherein the displacement mechanism displaces the feeding roller in conjunction with rotation of the feeding roller. The automatic feeding apparatus according to claim 3, wherein the feeding operation of one recording material is completed when the feeding roller rotates once from the initial rotation position.
The automatic feeding device, wherein the displacement mechanism displaces the feeding roller at a rotational position where the recording material does not come into contact with the outer peripheral surface of the feeding roller. The automatic feeding device according to any one of claims 1 to 4,
An electronic apparatus comprising: means for performing recording on a recording material fed by the automatic feeding device; or means for reading information recorded on the recording material fed by the automatic feeding device. A transport driving roller that rotates with the rotational driving force of the driving force source;
A conveyance guide surface for guiding the recording material in the conveyance direction in contact with a side end of the recording material conveyed by the rotation of the conveyance driving roller;
A transport driving roller support mechanism that rotatably supports the transport driving roller and supports the transport driving roller so as to be displaceable in a direction intersecting the transport direction;
A biasing mechanism for biasing the transport driving roller in a direction approaching the transport guide surface;
And a displacement mechanism for displacing the transport driving roller in a direction away from the transport guide surface. The recording material conveying apparatus according to claim 6, further comprising a conveyance driven roller that urges the recording material on an outer peripheral surface of the conveyance driving roller,
The recording material conveying apparatus, wherein the conveyance driven roller is supported so as to be integrally displaced with the conveyance driving roller in conjunction with or driven by the displacement of the conveyance driving roller. A recording material conveying apparatus according to claim 6 or 7,
An electronic apparatus comprising: means for performing recording on a recording material conveyed by the recording material conveyance device; or means for reading information recorded on a recording material conveyed by the recording material conveyance device.

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