JP2010275084A - Recording medium reversing device, and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent damage by maintaining suitable attitude by a route switching member (flap) even in the state in which a dual-surface unit is removed from a body of a recording device. <P>SOLUTION: An inkjet printer 1 detachably includes the dual-surface unit 4 including the first paper conveying route R1 for curving and reversing the paper P on the device body. The dual-surface unit 4 includes a second flap 41 for forming a second paper conveying route (straight route) in the attachment state to the printer device body. The second flap 41 shuts off the second paper conveying route in ascending attitude, guides the paper P to the first paper conveying route R1, and releases the second paper conveying route at descending attitude. In the second flap 41, its attitude is drive-controlled by a motor 49 provided at a side of the dual-surface unit 4. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a recording medium reversing apparatus that is detachably provided in a main body of a recording apparatus represented by a facsimile, a printer, or the like. The present invention also relates to a recording apparatus including the recording medium reversing apparatus.

  Some recording apparatuses represented by facsimiles, printers, and the like are capable of recording on both sides of a sheet as disclosed in Patent Documents 1 to 4. In such a recording apparatus, a sheet reversing path for reversing the sheet is used. It has.

  The paper reversing path is a path for curving and reversing the paper so that the opposite side (back surface) of the recording surface (front surface) on which recording has already been performed faces the recording head. It is provided in the back side. Therefore, after the recording is performed on the front surface, when the paper is back-fed, the paper is guided into the paper reversing path.

  Further, in the recording apparatus, a path (straight path) for linearly conveying the recording paper may be further provided. In such a recording apparatus, as shown in Patent Documents 1 to 4, the paper reversing path is a straight path. Further, a path switching member (flap) for switching the path is provided at a branch position between the sheet reversing path and the straight path.

JP 2004-315195 A JP 2007-253467 A JP 2007-284250 A Japanese Patent No. 3630768

  As shown in Patent Documents 1 to 3, the path switching member takes a predetermined posture by a spring force or its own weight, and is pushed away by the leading edge of the paper by advancing force of the paper to change its posture, or Patent Document 4 In some cases, the controller is configured to control a desired posture.

  However, the path switching member is easily damaged due to its shape. For example, when the sheet reversing path is unitized as an independent device (paper reversing apparatus) and configured to be detachable from the main body of the recording apparatus, There is a risk that the posture of the path switching member may be damaged by interference with the main body of the recording apparatus. Such a technical problem, that is, a technical problem peculiar to the sheet reversing apparatus configured to be detachable from the main body of the recording apparatus has not been considered in the above-described conventional technique.

  Further, as shown in Patent Document 4, when the path switching member is controlled in posture by the controller, if the path switching member itself is directly operated, an excessive force is applied to the path switching member, resulting in damage. Or may adversely affect the controller.

  Therefore, the present invention has been made in view of such a situation, and the purpose thereof is to maintain an appropriate posture of the path switching member (flap) even in a state where it is removed from the main body of the recording apparatus. An object of the present invention is to provide a sheet reversing device that does not adversely affect the path switching member and related components even when the path switching member is directly operated.

  In order to solve the above-described problem, a first aspect of the present invention includes a first recording medium conveyance path for curving and reversing a recording medium, and a recording apparatus main body that performs recording on the recording medium. A recording medium reversing device configured to be detachable with respect to the recording medium, wherein the recording medium reversing device forms a second recording medium conveyance path together with the main structural member when the recording apparatus is mounted on the main body. The path constituting member blocks the second recording medium conveyance path in the first posture and guides the recording medium from the second recording medium conveyance path to the first recording medium conveyance path. And a path switching member that opens the second recording medium conveyance path in the second posture, and the path switching member is powered by a motor provided on the recording medium reversing device side. Through Characterized in that it comprises a structure for switching serial first orientation and said second orientation.

  According to this aspect of the recording medium reversing apparatus, the path switching member that switches between the first recording medium conveyance path and the second recording medium conveyance path is configured to be detachable from the main body of the recording apparatus. Since the first posture and the second posture are switched via the power of the motor provided on the side, the recording medium reversing device is removed from the main body of the recording device (hereinafter referred to as “ Even in the “removed state”, the power transmission path between the motor and the path switching member is not cut.

  Therefore, it is possible to prevent the posture of the path switching member from being easily changed in the detached state of the recording medium reversing device, and to maintain a desired posture. As a result, it is possible to prevent the recording medium reversing apparatus from being mounted on the recording apparatus main body while the path switching member is in an inappropriate posture, and the path switching member is damaged due to interference with the recording apparatus main body. You can avoid that.

  Note that the fact that the path switching member can maintain the desired posture even in the detached state does not necessarily mean that the path switching member can perform the posture switching even in the detached state. This means that the power transmission path from the motor to the path switching member is not disconnected in the detached state, and if the path switching member itself is directly operated, it receives some resistance from the motor side.

  According to a second aspect of the present invention, in the first aspect, the power transmission path between the motor and the path switching member includes clutch means for transmitting power from the motor to the path switching member by a frictional force. It is characterized by.

  According to this aspect, since the power transmission path between the motor and the path switching member is provided with the clutch means for transmitting power from the motor to the path switching member by frictional force, the path switching member itself When an attempt is made to directly operate the switch, the posture can be changed without applying an excessive force to the route switching member, and damage to the route switching member can be avoided. At the same time, since an excessive force is not applied to the power transmission path to the motor, damage to the components of the power transmission path can be avoided.

  According to a third aspect of the present invention, in the second aspect, the clutch means includes a rotating unit that is rotationally driven by the motor, a transmission unit that transmits power to the path switching member, the rotating unit, and the transmission. And a friction surface that transmits power from the rotating portion to the transmitting portion by a frictional force, and a plurality of the friction surfaces are provided along the rotation axis of the rotating portion. It is characterized by being.

  According to this aspect, since a plurality of the friction surfaces are arranged along the rotation axis of the rotating portion, the friction force per unit area can be set small, and the wear of the member forming the friction surface can be reduced. It can be reduced and the life can be extended.

  According to a fourth aspect of the present invention, in the second or third aspect, when rotation is transmitted from the clutch means to the path switching member to a power transmission path between the clutch means and the path switching member. The present invention is characterized by comprising a speed reduction means for decelerating the rotation speed.

  According to this aspect, the power transmission path between the clutch means and the path switching member is provided with the speed reduction means for reducing the rotational speed when the rotation is transmitted from the clutch means to the path switching member. Further, it is possible to reduce the wear of these friction surfaces of the rotating body, the transmission member, and the clutch member, thereby extending the life and reducing the motor load.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the first recording medium conveyance path includes at least one conveyance roller that conveys the recording medium, and the motor includes the motor It is a drive source of a conveyance roller, and the path switching member obtains power of the motor via the conveyance roller.

  According to this aspect, the motor is a drive source of a transport roller provided in the first recording medium transport path, and the path switching member obtains the power of the motor via the transport roller. By common use, cost reduction and space saving can be achieved.

  According to a sixth aspect of the present invention, there is provided a recording apparatus for recording on a recording medium, wherein the recording medium reversing device according to any one of the first to fifth aspects is detachably provided. And According to this aspect, in the recording apparatus, it is possible to obtain the same function and effect as any one of the first to fifth aspects.

FIG. 3 is a side cross-sectional view schematically showing a paper conveyance path of the printer according to the invention. FIG. 3 is a side cross-sectional view schematically showing a paper conveyance path of the printer according to the invention. FIG. 3 is a side cross-sectional view schematically showing a paper conveyance path of the printer according to the invention. FIG. 3 is a side cross-sectional view schematically showing a paper conveyance path of the printer according to the invention. FIG. 3 is a perspective view of the apparatus main body of the printer according to the present invention and the duplex unit according to the present invention as viewed obliquely from the rear side. The perspective view which looked at the duplex unit concerning the present invention from the slanting back side. The perspective view which looked at the duplex unit concerning the present invention from the slanting back side. These perspective views of a path | route switching member (flap), a clutch apparatus, and a deceleration means. Sectional drawing of a clutch apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 are side sectional views schematically showing a sheet conveyance path of an ink jet printer 1 which is an embodiment of a recording apparatus according to the present invention, and FIG. 5 is an apparatus main body 1a of the ink jet printer 1 and a substrate according to the present invention. FIG. 6 and FIG. 7 are perspective views of the double-sided unit 4 as viewed from the diagonally rear side.

  8 is a perspective view of the second flap 41, the clutch device 50, and the speed reducing means 58. FIG. 9 is a sectional view of the clutch device 50 (a view cut along a plane parallel to the rotation axis direction of the rotation shaft 42a). is there. 1 to 4 show cross sections of the apparatus, but in order to avoid complication of the drawings, the actual cut surfaces of the constituent members and their hatching are omitted.

<< 1. Overall configuration of inkjet printer >>
The overall configuration of the inkjet printer 1 will be outlined below with reference mainly to FIGS. In the following, the right side of FIGS. 1 to 4 is referred to as “device rear side” or “upstream side” or “first side”, and the left side of FIGS. 1 to 4 is referred to as “device front side” or “downstream”. "Side" or "second side".

  The ink jet printer 1 includes three paper feeding units, one of which is a rear feeding unit 2 provided at the upper rear portion of the apparatus, and the other of which is a front feeding unit 3 provided at the front bottom of the apparatus. . The other one is manual feed means for manually feeding from the manual feed port E on the rear side of the apparatus (or from the front side of the apparatus) substantially horizontally.

  The paper P as a recording medium supplied from these paper feeding means is sent to a recording area by the ink jet recording head 33 to perform recording, and toward a stacker (not shown) provided on the front side of the apparatus. Discharged. Alternatively, the conveyance medium (mainly cardboard or the like) supplied from the manual feed port E on the rear side of the apparatus is discharged from the same manual feed port E. Alternatively, in particular, the recording paper P supplied from the rear feeding unit 2 or the front feeding unit 3 and recorded is back-feeded toward the rear side of the apparatus for recording on both sides and reversed by the duplex unit 4. Then, it is sent again to the recording area by the inkjet recording head 33.

  Hereinafter, the components on the paper transport path will be described in more detail. First, the rear feeding unit 2 has a base frame 10 as a base, and a feeding roller 11 that is rotationally driven by a motor (not shown), supports the paper P in an inclined posture, and approaches and separates from the feeding roller 11. And an operable hopper 12 constituting a second recording medium setting section.

  Reference numeral 13 denotes a retard roller provided in a state in which a predetermined rotational resistance is applied. By niping the paper P with the feeding roller 11, the uppermost paper P to be fed and the double feed The next and subsequent sheets P are separated from each other.

  Note that the paper P delivered from the rear feeding unit 2 passes through a fourth paper conveyance path indicated by a broken line and a symbol R4 in FIG. 1 and extends in the horizontal direction from the first side to the second side. To the sheet transport path R2 (FIG. 3) at a position T1. The fourth paper transport path R4 is opposite to the third paper transport path R3 (FIG. 2) and the first paper transport path R1 (FIG. 4) with respect to the second paper transport path R2 (FIG. 3). Is provided on the side (upper side). The base frame 10 constituting the base of the rear feeding unit 2 and the hopper 12 form the fourth paper transport path R4.

  Subsequently, the front feeding unit 3 includes a paper cassette 15 as a first recording medium setting unit, a pick roller 17, a first feeding roller 18 and a driven roller 19, a second feeding roller 20 and a driven roller. 21. A hopper 16 is provided at the bottom of the paper cassette 15, and the hopper 16 is in a rising posture in which the paper P stacked by a driving source (not shown) is pressed against the pick roller 17, and in a lowering posture in which the paper cassette 15 is separated from the pick roller 17. Switch between and.

  The pick roller 17, the first feeding roller 18, and the second feeding roller 20 are rotationally driven by a motor (not shown), and feed the paper P toward the transport driving roller 27 and the transport driven roller 28. To send.

  As described above, the sheet P sent out from the front feeding unit 3 toward the first side (the rear side of the apparatus) is changed to the second side (the front side of the apparatus) in FIG. The curve is reversed through the third sheet conveyance path shown in FIG. 3 and joins the second sheet conveyance path R2 (FIG. 3) at the position T2. Reference numerals G7, G8, G9, and G6 denote guide members that form the third paper transport path R3.

  Reference numeral 40 denotes a swingable first flap that forms a third sheet transport path R3 together with the guide members G7, G8, G9, and G6. The first flap 40 is normally lowered due to its own weight, so that the first flap 40 is in a state of blocking the third paper transport path R3, and the upper surface forms the second paper transport path R2 ( FIG. 3). On the other hand, when the sheet P advances along the third sheet conveyance path R3, the leading edge of the sheet pushes the first flap 40 upward (FIG. 2), thereby opening the third sheet conveyance path R3. It has become.

  In FIG. 2, the symbol R5 indicates the fifth paper transport path. The fifth paper transport path is a transport path through which paper supplied from an optional paper feed section (not shown) provided below the front feed section 3 as necessary, and is apparent from the figure. Then, the ink is joined to the third paper transport path R3 and supplied to the ink jet recording head 33 side.

  Next, the paper P fed from the rear feeding unit 2 and the front feeding unit 3 reaches the conveyance driving roller 27 and the conveyance driven roller 28. The transport driving roller 27 is rotationally driven by a motor (not shown) and precisely feeds the paper P to a region facing the ink jet recording head 33. The transport driven roller 28 is supported by the upper guide member 29 so as to be freely rotatable. The transport driven roller 28 is urged toward the transport driving roller 27 and is driven to rotate while the paper P is pressed against the transport driving roller 28.

  The ink jet recording head 33 is provided at the bottom of the carriage 32, and the carriage 32 is not shown while being guided in the scanning direction of the ink jet recording head 33 (the front and back sides in FIGS. 1 to 4) by a guide shaft (not shown). The motor reciprocates in the scanning direction.

  A lower guide member 31 is provided at a position facing the ink jet recording head 33, and the lower guide member 31 defines a distance between the ink jet recording head 33 and the paper P. An auxiliary roller 36 for preventing the paper P from floating is provided on the downstream side of the ink jet recording head 33, and a discharge driving roller 37 and a discharge driven roller 38 for discharging the recorded paper P are further provided on the downstream side. It has been.

  Next, the paper conveyance path of the inkjet printer 1 will be further described. As described above, the paper P fed from the rear feeding unit 2 is sent to the ink jet recording head 33 side through the fourth paper transport path R4, and the paper P fed from the front feeding unit 3 is The ink is sent to the ink jet recording head 33 side through the third paper transport path R3.

  In addition, a second sheet conveyance path R2 extending linearly in a substantially horizontal direction is formed (FIG. 3). The second paper transport path R2 is a transport path for transporting a transport medium that is highly rigid and difficult to bend, such as thick paper or a tray. When using the second paper transport path R2, a transport medium is inserted from the manual feed port E secured on the rear side of the apparatus, or transported between the discharge driving roller 37 and the discharge driven roller 38 on the front side of the apparatus. Insert the media. The inserted conveyance medium receives a feeding force from the conveyance drive roller 27 or the discharge drive roller 37 and is conveyed in the upstream direction or the downstream direction.

  Further, as shown in FIG. 4, the ink jet printer 1 branches from the second paper transport path R2 at a position T3, and is bent and reversed to join the middle of the third paper transport path R3 (position T4). A first sheet conveyance path R1 is formed. The first sheet transport path R1 is fed from the fourth sheet transport path R4 (rear feeding unit 2) or the third sheet transport path R3 (front feeding unit 3). This is a conveyance path for reversing the sheet in order to perform recording on the back surface (second surface) of the sheet P on which recording has been performed on the surface.

  A second flap 41 is provided at the entrance of the first paper transport path R1, and when the first paper transport path R1 is used, the second flap 41 takes a rising posture as shown in FIG. It is controlled (details will be described later). Therefore, when the paper P recorded on the front surface (first surface) is fed back toward the upstream side, the rear end of the paper on the front surface (first surface) is drawn downward, that is, the first surface. Guided to one sheet transport path R1. Then, the sheet P is curved and inverted upward, and is sent again to the recording area by the inkjet recording head 33 with the back surface (second surface) facing up.

<< 2. Double-sided unit configuration >>
Hereinafter, the duplex unit 4 including the first sheet transport path R1 will be described in detail. First, the first paper transport path R1 will be described in more detail with reference to FIG. The first paper transport path R1 is a paper transport path for curving and reversing the paper P, and includes a guide member and a guide member G7 (which are also components of the front feeding unit 3) denoted by reference numerals G1 to G6, and a second. It is formed by these members of the flap 41, that is, a path forming member. These path forming members are unitized and configured to be detachable from the printer apparatus main body 1a.

  More specifically, the second flap 41 causes the swing shaft 41a to be moved by a motor 49 provided on the double-sided unit 4 side at a branch position T3 from the second paper transport path R2 to the first paper transport path R1. It is provided at the center so as to be driven to swing in the clockwise direction and the counterclockwise direction of FIG.

  The second flap 41 blocks the second paper transport path R2 in the first posture (ascending posture: FIG. 4) and transports the paper P that has been fed back through the second paper transport path R2 to the first paper. Guide to route R1. The second flap 41 opens the second paper transport path R2 in the second posture (downward posture: FIG. 3). The power transmission path from the motor 49 to the second flap 41 will be described in detail later.

  In the first paper transport path R1, the first reverse roller 42 and the driven roller 43 in contact therewith, the second reverse roller 44 and the driven roller 45 in contact therewith, the third reverse roller 46 and the driven roller 47 in contact therewith. These three sets of paper transport rollers are provided.

  These rollers of the first reversing roller 42, the second reversing roller 44, and the third reversing roller 46 are provided so as to be rotationally driven by a motor 49, and by rotating these rollers, the sheet P is changed to the first reversing roller 42. The paper can travel along the paper transport path R1 to join the third paper transport path R3.

  The duplex unit 4 having the first sheet transport path R1 configured as described above is configured to be detachable from the printer apparatus main body 1a as shown in FIG. Reference numeral 1b denotes an engaged portion provided in the printer apparatus main body 1a, and reference numeral 62 denotes an engaging protrusion provided in the duplex unit 4. The engaging protrusion 62 is engaged with the engaged portion 1b. Thus, the duplex unit 4 is configured to be locked in the mounted state.

  Reference numeral 61 denotes an operation lever. The lock is released by pulling the operation lever 61 to the rear side of the apparatus. The engaging protrusion 62 and the engaged portion 1b are provided on both sides in the longitudinal direction of the duplex unit 4, but only one side is shown in FIG.

  5-7, the code | symbol 60 has shown the cover which can be rotated centering on the rotation axis which abbreviate | omits illustration. By rotating the cover 60, a curved reversal path of the first paper transport path R1, more specifically, a section from the first reversing roller 42 to the third reversing roller 46 is exposed. Thereby, even if a paper jam occurs in the curved inversion path, the jammed paper P can be easily removed.

  If the duplex unit 4 is removed, the curved reversal section of the third paper transport path R3 is exposed, and even if a paper jam occurs in the third paper transport path R3, the jammed paper P is easily removed. It is possible to do.

  Note that the second sheet transport path R2 is formed on the upstream side of the transport drive roller 27 by the guide member G9, the first flap 40, the second flap 41, and the cover 60, and the lower side of the path. The upper guide member 29 and the base frame 10 form the upper side of the path. That is, the first flap 40 and the second flap 41 constituting the double-sided unit 4 have the second sheet transport path R2 together with the constituent members on the printer device main body 1a side when the double-sided unit 4 is mounted on the printer device main body 1a. Form.

  By the way, in the present embodiment, the first paper transport path R1 is branched from the second paper transport path R2, is bent and reversed, and joins in the middle of the second paper transport path. That is, the two conveyance paths (the third sheet conveyance path R3 and the first sheet conveyance path R1) having the curved inversion path are on the same side (the lower side in the present embodiment) with respect to the second sheet conveyance path R2. And a part of the route section is shared, so that it is possible to suppress an increase in the size of the apparatus.

  In addition, the path constituent member (guide member) that forms the second paper transport path R2 includes a guide member G9 as a first guide member that forms the third paper transport path R3, and the first paper transport path R1. The first flap 40 and the second flap 41 as the second guide member for forming the fourth frame, and the base frame 10 as the third guide member for forming the fourth paper transport path R4. Therefore, cost reduction and space saving are achieved by sharing components.

  In the present embodiment, the upper portion of the duplex unit 4 forms a first paper transport path R1, that is, a straight path, but the fourth paper transport path R4, that is, the paper P fed from the rear feeding unit 2 is used. It can also be configured to form a transport path.

  Next, in the present embodiment, a motor 49 that drives and controls the second flap 41 is provided on the double-sided unit 4 side as described above. Accordingly, even when the reversing unit 4 is detached from the printer apparatus main body 1a (hereinafter referred to as “removed state”), a desired posture can be maintained.

  In other words, if the configuration of the second flap 41 can be easily switched while the duplex unit 4 is removed, the duplex unit 4 is placed in the printer apparatus while the second flap 41 remains in the raised position as shown in FIG. There is a risk of being attached to the main body 1a. At this time, the second flap 41 may interfere with the printer apparatus main body 1a and be damaged.

  However, as described above, even when the duplex unit 4 is detached, the power transmission path from the motor 49 to the second flap 41 is not cut, so the posture of the second flap 41 does not change carelessly, and the desired posture (Descent posture shown in FIG. 6) can be maintained, and damage to the second flap 41 can be avoided.

  For this purpose, the second flap 41 is usually controlled to take a lowered posture (FIG. 6) by a control means (not shown) for controlling the motor 49 (the normal posture of the second flap 41), and the first inversion path R1. It is desirable to control so as to temporarily take the rising posture (FIG. 4) only when the paper P is drawn into the paper.

  It should be noted that when the second flap 41 itself is directly operated in the detached state of the duplex unit 4, such a resistance generating means is a power transmission path from the motor 49 to the second flap 41 and As long as it is provided on the double-sided unit 4 side, the motor 49 may be provided on the printer apparatus main body 1a side.

<< 3. Power transmission path from the motor to the second flap >>
Next, a power transmission path between the motor 49 and the second flap 41 will be described with reference to FIGS. 8 and 9. In the power transmission path, the clutch device 50 as a clutch means for transmitting power from the motor 49 to the second flap 41 by frictional force, and the rotational speed is reduced when the rotation is transmitted from the clutch device 50 to the second flap 41. Deceleration means 58.

  The clutch device 50 is provided at the shaft end of the rotating shaft 42a of the first reversing roller 42. The rotating bodies 51 and 52 as rotating portions, the transmission gear 55 as transmitting portions, clutch members 56a and 56b, And a coil spring 57.

  The rotating bodies 51 and 52 are fixedly provided on the rotating shaft 42a with respect to the rotating direction of the rotating shaft 42a. When the rotating shaft 42a rotates, the rotating bodies 51 and 52 are always rotated. The rotating body 51 is constrained by the stopper portion 42b so as not to move to one side (right direction in FIG. 9) with respect to the rotating axis direction of the rotating shaft 42a. It is provided in an unconstrained state with respect to the rotational axis direction.

  On the other hand, the transmission gear 55 and the clutch members 56a and 56b are provided so as to be non-fixed to the rotation shaft 42a, that is, relatively rotatable with respect to the rotation direction of the rotation shaft 42a. The rotation axis 42a is also provided in an unconstrained state with respect to the rotation axis direction.

  The rotating body 52, the transmission gear 55, and the clutch members 56a and 56b are provided in a state of being pressed toward the rotating body 51 by a coil spring 57 as an urging means. Accordingly, the pressure contact surface between the rotating body 51 and the clutch member 56a, the pressure contact surface between the clutch member 56a and the transmission gear 55, the pressure contact surface between the transmission gear 55 and the clutch member 56b, and the rotation with the clutch member 56b. These pressure contact surfaces between the body 52 and the body 52 are friction surfaces that generate a frictional force. In FIG. 9, reference numeral 53 indicates a flat seat for holding the coil spring 57, and reference numeral 54 indicates a stopper for retaining the flat seat 53 so as not to come off in the left direction of FIG.

  As described above, when the rotating shaft 42a rotates, the rotational torque is transmitted from the rotating body 51 and the rotating body 52 to the transmission gear 55 by the friction surface, and the transmission gear 55 rotates. Since the second flap 41 (swinging shaft 41a) is provided so as to swing only within a predetermined angle range, when the switching of the posture of the second flap 41 is completed, the rotating bodies 51 and 52 are subsequently rotated. Also, the rotation of the transmission gear 55 is stopped.

  As described above, since the clutch device 50 that transmits power from the motor 49 to the second flap 41 by frictional force is provided, it is impossible for the second flap 41 to operate when the second flap 41 itself is directly operated. The posture can be changed (oscillated) without applying a force, and damage to the second flap 41 can be avoided. At the same time, since an unreasonable force is not applied to the power transmission path to the motor 49 side, it is possible to avoid damage to the components of the power transmission path.

  Further, since the clutch device 50 includes the plurality of friction surfaces on the same rotational axis, the friction force per unit area of the friction surface can be set small. More specifically, since sufficient torque can be transmitted from the rotating bodies 51 and 52 to the transmission gear 55 even if the spring force of the coil spring 57 is set to be small, the wear of the members forming the friction surface is reduced and lengthened. Life can be extended.

  Next, the speed reducing means 58 that decelerates the rotation of the transmission gear 58 includes an intermediate gear 59 and a gear 48 provided at the shaft end of the swing shaft 41 a of the second flap 41. The intermediate gear 59 is a gear in which a large gear 59 a and a small gear 59 b are integrally formed. The large gear 59 a meshes with the transmission gear 55, and the small gear 59 b meshes with the gear 48. With the above configuration, the rotation of the transmission gear 58 is decelerated and transmitted to the second flap 41.

  In this manner, since the rotation is decelerated and transmitted from the transmission gear 55 to the second flap 41 via the speed reduction means 58, the members (rotators 51 and 52, transmissions) forming the friction surface in the clutch device 50 are transmitted. The wear of the gear 55 and the clutch members 56a and 56b) can be reduced to extend the life, and the load on the motor 49 can be reduced.

DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 rear feeding part, 3 front feeding part, 4 duplex unit, 10 base frame, 11 feeding roller, 12 hopper, 13 retard roller, 15 paper cassette, 16 hopper, 17 pick roller, 18 1st Feed roller, 19 driven roller, 20 second feed roller, 21 driven roller, 27 transport drive roller, 28 transport driven roller, 29 upper guide member, 31 lower guide member, 32 carriage, 33 inkjet recording head, 36 auxiliary roller , 37 discharge drive roller, 38 discharge driven roller, 40 first flap, 41 second flap, 41a swing shaft, 42 first reverse roller, 43 driven roller, 44 second reverse roller, 45 driven roller, 46 third reverse Roller, 4 7 driven roller, 48 gear, 49 motor, 50 clutch device, 51, 52 rotating body, 53 flat seat, 54 stopper, 55 transmission gear, 56a, 56b clutch member, 57 coil spring, 58 speed reduction means, 59 intermediate gear, 60 Cover, 61 operation lever, 62 engaging protrusion, E manual feed port, G1 to G9 guide member, P recording paper, R1 first paper transport path, R2 second paper transport path, R3 third paper transport path , R4 Fourth paper transport path

Claims (6)

A recording medium reversing device comprising a first recording medium conveyance path for curving and reversing the recording medium, and configured to be detachable from the main body of the recording device for recording on the recording medium,
In a state where the recording apparatus is attached to the main body, a path constituting member that forms a second recording medium conveyance path together with the main body side constituting member is provided.
The path constituting member blocks the second recording medium conveyance path in the first posture and guides the recording medium from the second recording medium conveyance path to the first recording medium conveyance path, A path switching member configured to open the second recording medium conveyance path in the second posture;
The path switching member has a configuration for switching between the first posture and the second posture through the power of a motor provided on the recording medium reversing device side.
A recording medium reversing device characterized by the above. 2. The recording medium reversing device according to claim 1, further comprising clutch means for transmitting power from the motor to the path switching member by frictional force in a power transmission path between the motor and the path switching member. ,
A recording medium reversing device characterized by the above. The recording medium reversing device according to claim 2, wherein the clutch means includes a rotating unit that is rotationally driven by the motor;
A transmission unit for transmitting power to the path switching member;
A friction surface interposed between the rotating portion and the transmitting portion, and transmitting power from the rotating portion to the transmitting portion by a frictional force.
A plurality of the friction surfaces are provided along the rotation axis of the rotating part,
A recording medium reversing device characterized by the above. 4. The recording medium reversing device according to claim 2, wherein a rotational speed at which rotation is transmitted from the clutch means to the path switching member is transmitted to a power transmission path between the clutch means and the path switching member. Equipped with deceleration means for decelerating,
A recording medium reversing device characterized by the above. 5. The recording medium reversing device according to claim 1, wherein the first recording medium conveyance path includes at least one conveyance roller that conveys the recording medium.
The motor is a drive source of the transport roller, and the path switching member obtains power of the motor via the transport roller;
A recording medium reversing device characterized by the above. A recording apparatus for recording on a recording medium, wherein the recording medium reversing apparatus according to any one of claims 1 to 5 is detachably provided.
A recording apparatus.

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