JP5573494B2 - Conveying apparatus and recording apparatus - Google Patents

Description

  The present invention relates to a conveying apparatus that conveys a recording medium such as a long sheet or a cut sheet, and a recording apparatus including the apparatus.

  2. Description of the Related Art Conventionally, among recording apparatuses that perform recording on a recording medium, there is a recording apparatus that includes a conveying apparatus that conveys a recorded recording medium toward a discharge port (for example, Patent Document 1). That is, the transport apparatus described in Patent Document 1 is configured to transport a recording medium on which recording is performed by a recording unit at a recording position in the middle of the transport path, at a position downstream of the recording position in the transport path. It was made to convey by rotating the both rollers which comprise the conveyance roller pair in the state clamped by the pair.

JP-A-11-193158

  By the way, in the transport apparatus described in Patent Document 1, although a plurality of types of recording media having different length dimensions along the transport direction are transported toward the discharge port, the length dimension along the transport direction of those recording media is used. Even if there is a difference, the conveying roller pair holds each recording medium in the same manner between rollers positioned on one side and the other side of the recording medium. In other words, a conveyance load is applied to each recording medium passing between both rollers of the conveyance roller pair when the rollers of the conveyance roller pair sandwich the recording medium. Therefore, when the downstream portion of the recording medium is sandwiched between the pair of conveying rollers, if the upstream portion of the recording medium is still being recorded by the recording means at the recording position, the recording medium Due to the occurrence of a transport load in the downstream part, there is a possibility that the recording quality of the recording medium may be disturbed due to the recording disorder on the upstream part of the recording medium.

  The present invention has been made in view of the circumstances as described above, and an object of the present invention is to suppress a conveyance device capable of suppressing a conveyance load on a recording medium passing through a conveyance path and a decrease in recording quality. It is an object of the present invention to provide a recording device that can be used.

In order to achieve the above object, the transport apparatus of the present invention is disposed at a position downstream of the recording position at which recording is performed on the recording medium in the transport path, and from the upstream side to the downstream side of the transport path. A transporting device for transporting a recording medium, wherein the transporting port is disposed at a position downstream of the curl correcting unit for correcting curl of the recording medium on which recording is performed, and transports a recording medium to be transported; A case provided with a discharge port provided vertically above the carry-in port, and a reversal conveyance unit that conveys the recording medium carried into the case from the carry-in port to the discharge port while reversing, the reversal conveyance section includes a reversing path forming member for forming a reverse path leading to the recording medium the outlet while reversing and on one side of the recording medium relative to said recording medium passing through the reversing path By at least one of the rollers located in a roller and the other surface side location is rotated in contact, and a transport roller pair for conveying along the recording medium to the conveying path, the conveying roller pair, the When the recording medium passes between both rollers, the distance between the position where the pair of conveying rollers is arranged and the recording position on the upstream side of the position is a length dimension along the conveying direction of the recording medium. When the length is longer than the dimension, the rollers are not sandwiched with respect to the long recording medium.

  According to this configuration, when the recording medium passing through the position where the conveyance roller pair is disposed in the middle of the conveyance path is a long recording medium, the conveyance roller pair is in a non-nipping state with respect to the recording medium. Become. That is, when the length dimension along the conveyance direction of the recording medium is a recording medium longer than the distance dimension between the position where the conveyance roller pair is disposed and the recording position upstream of the position, When the pair of transport rollers is not sandwiched with respect to the long recording medium, the transport load applied to the recording medium by the pair of transport rollers is made smaller than that in the sandwiched state. Therefore, as a result of suppressing the conveyance load on the recording medium passing through the conveyance path, for example, when a long recording medium passes between both rollers of the conveyance roller pair, the recording position with respect to the upstream portion of the recording medium Even when recording is performed at the same time, it is possible to contribute to the suppression of the deterioration of the recording quality.

  In the transport apparatus according to the aspect of the invention, when the both rollers are in the non-nip state, the pair of transport rollers is such that the at least one roller is in a direction perpendicular to the axial direction of the rollers and is separated from the transport path. Move in the direction.

  According to this configuration, when the conveyance roller pair is not sandwiched with respect to the long recording medium, at least one roller is moved in a direction perpendicular to the axial direction and away from the conveyance path. All you need to do is Therefore, it is possible to easily realize the configuration of the transport device that can suppress the transport load.

  In the transport apparatus according to the present invention, the pair of transport rollers abuts against a drive roller that rotates in contact with one surface side of the recording medium, and an other surface side of the recording medium that is transported along with the drive rotation of the drive roller. The driven roller is in contact with the driven roller and rotates, and the driven roller moves in a direction away from the driving roller when transporting the long recording medium.

  According to this configuration, since the driven roller is easier to move in the direction intersecting the axial direction than the driving roller, it is easy to configure the transport roller pair that is not sandwiched with respect to the long recording medium. Can do. Therefore, it is possible to easily realize a transport device capable of suppressing the transport load applied to the long recording medium transported in such a manner.

  In the transport device of the present invention, the roller surface of the driven roller is formed of a member having a friction coefficient of the roller surface higher than that of the roller surface of the driving roller.

  According to this configuration, a sufficient transport force can be applied to the transported recording medium in the sandwiched state in which the driven roller is sandwiched between the driven roller and the drive roller. Accordingly, the transport device has a function of suppressing a transport load applied to the long recording medium when transporting the long recording medium and a transport medium other than the long recording medium. Further, it is possible to achieve both a function of imparting a necessary conveying force to the other recording medium.

In order to achieve the above object, a recording apparatus of the present invention includes a recording unit that performs recording on a recording medium conveyed from the upstream side of the conveying path to the downstream side, the recording is performed by the recording means a curl correcting means for correcting the curl of the recording medium, pre-SL and a conveying apparatus having the above structure for conveying the recording medium, wherein the curl correcting section is recorded continuously by the recording means relative to said recording medium The recording medium is conveyed to the conveying device without correcting the curl, and the conveying device is in a state in which the rollers are not sandwiched with respect to the recording medium conveyed in a curled state. And

  According to this configuration, it is possible to obtain the same operational effects as in the case of the transport device in the recording device.

1 is a schematic front view of a printer according to an embodiment. FIG. 2 is a schematic front sectional view of a transport device provided in the printer. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 2. It is a schematic front view of a 1st moving mechanism, (a) is a schematic front view in case a 1st conveyance roller pair is in a clamping state, (b) is a schematic front in case a 1st conveyance roller pair is in a non-clamping state. Figure. It is a schematic side view of a 2nd moving mechanism, (a) is a schematic front view in case a 2nd conveyance roller pair is in a clamping state, (b) is a schematic front in case a 2nd conveyance roller pair is in a non-clamping state. Figure. It is a schematic side view of a 3rd movement mechanism, (a) is a schematic front view in case a 3rd conveyance roller pair is in a clamping state, (b) is a schematic front in case a 3rd conveyance roller pair is in a non-clamping state. Figure. FIG. 7 is a schematic view taken along line 7-7 in FIG. 2. FIG. 8 is a schematic cross-sectional view taken along line 8-8 in FIG. 7, (a) is a schematic cross-sectional view showing a state where the flapper is in the long position, and (b) is a schematic showing a state where the flapper is in the short position. Sectional drawing. FIG. 9 is a schematic view taken along line 9-9 in FIG. 7, (a) is a schematic view when the flapper is in the long position, and (b) is a schematic view when the flapper is in the short position. FIG. 3 is a schematic front sectional view of a transport device when transporting cut paper. FIG. 3 is a schematic front sectional view of a transport device when transporting continuous paper.

  Hereinafter, an embodiment in which the present invention is embodied in an ink jet printer (hereinafter, also referred to as “printer”) which is a kind of recording apparatus and a transport device provided in the printer will be described with reference to FIGS. In the following description, when referring to “front-rear direction”, “vertical direction” and “left-right direction”, unless otherwise specified, “front-rear direction”, “vertical direction” and “ It shall mean “left-right direction”. In this case, the “front / rear direction” corresponds to the width direction intersecting the recording medium conveyance direction, the “up / down direction” corresponds to the vertical direction, and the “left / right direction” indicates the direction from the right side to the left side. This corresponds to the medium conveyance direction.

  As shown in FIG. 1, the printer 11 includes a main body case 12 having a substantially rectangular parallelepiped shape. At a position on the lower right side in the main body case 12, a feeding unit 13 that feeds out the continuous continuous paper S is provided. A winding shaft 14 extending in the width direction (front-rear direction) orthogonal to the conveyance direction of the continuous paper S is rotatably provided in the feeding unit 13. A continuous paper S, which is an example of a long recording medium, is supported on the winding shaft 14 so as to be integrally rotatable with the winding shaft 14 in a state of being wound in a roll shape. That is, the continuous paper S is fed from the winding shaft 14 by the rotation of the winding shaft 14 and is conveyed toward the downstream side (left side) in the conveyance direction.

  A relay roller 15 extending in the width direction (front-rear direction) of the continuous paper S in a manner parallel to the winding shaft 14 is rotatably disposed at a position above the winding shaft 14 in the vertical direction. Then, by winding the continuous paper S fed from the winding shaft 14 onto the relay roller 15 from the lower right side, the continuous paper S is transported horizontally toward the downstream side (left side) in the transport direction. .

  A rectangular support member 16 that can support the continuous paper S to be transported is disposed at a position downstream (left side) in the transport direction from the relay roller 15. The support surface 16 a that is the upper surface of the support member 16 is disposed so as to have the same height as the top of the outer peripheral surface of the relay roller 15. Therefore, the continuous paper S whose transport direction is converted into the horizontal left direction by the relay roller 15 is transported to the left side which is the downstream side in the transport direction while being in sliding contact with the support surface 16a of the support member 16.

  At a position above the support member 16 and facing the support surface 16a of the support member 16, a recording unit 17 that performs recording on the conveyed continuous paper S is provided. The recording unit 17 includes a carriage 18 that can be reciprocated in the main scanning direction intersecting the conveyance direction of the continuous paper S by a driving unit (not shown), and a recording head as an example of a recording unit supported on the lower surface of the carriage 18. 19. The lower surface of the recording head 19 is a horizontal nozzle forming surface in which a plurality of nozzles (not shown) for ejecting ink are opened. Then, the recording head 19 performs recording by ejecting ink onto the continuous paper S that is transported to the downstream side (left side) in the transport direction while sliding on the support surface 16 a of the support member 16. ing. Note that the position where the recording head 19 is disposed on the transport path on which the continuous paper S is transported is the recording position at which recording is performed on the continuous paper (recording medium) S.

  Further, a roller pair 20 including a driving roller and a driven roller is disposed at a position downstream (left side) in the transport direction from the recording position where the recording head 19 is disposed. The roller pair 20 is driven by the driven roller as the continuous paper S moves downstream (left side) in the transport direction based on the driving rotation of the driving roller while the continuous paper S is sandwiched between the driving roller and the driven roller. By rotating, the continuous paper S is nipped between both rollers and conveyed downstream in the conveying direction (left side).

  Further, a cutter 21 capable of cutting the continuous paper S in the width direction (front-rear direction) intersecting the transport direction is disposed at a position downstream of the roller pair 20 in the transport direction (left side). The cutter 21 cuts the long continuous paper S into cut paper CS having a predetermined length along the transport direction. When the continuous paper S is cut into a cut paper CS having a predetermined length by the cutter 21, the continuous paper S is conveyed to the downstream side (left side) in the conveyance direction one by one every time it is cut.

  A curl correction unit 22 that corrects (decurls) curling (curling) of the cut sheet CS formed by cutting the continuous sheet S by the cutter 21 is provided at a position downstream (left side) in the transport direction from the cutter 21. It has been. The curl correction unit 22 has an upstream roller 23 that contacts one side of the cut sheet CS (the lower side in FIG. 1), and a downstream side that contacts the one side of the cut sheet CS on the downstream side of the upstream roller 23 in the transport direction. The roller 24 and the decurling roller 25 which contacts the other surface side (upper surface side in FIG. 1) of the cut sheet CS at a position between the upstream roller 23 and the downstream roller 24 are provided. The decurling roller 25 corrects curling of the cut paper CS by pressing the cut paper CS between the decurling roller 24 and the downstream roller 24. In the present embodiment, the curl correction unit 22 corrects curl when a relatively short cut sheet CS as shown in FIG. 10 is conveyed, for example, but such a short cut sheet CS. Further, when the cut paper CS (see FIG. 2) or the continuous paper S (see FIG. 11) which is longer than the cut paper CS is conveyed, the curl correction is not performed.

  Further, the continuous paper S (specifically, downstream in the transport direction) is formed on the side wall of the main body case 12 at a position downstream (left side) in the transport direction with respect to the curl correction unit 22 from inside the main body case 12 to outside the main body case 12. Side end) and a conveyance port (not shown) for conveying the cut sheet CS are formed as openings. The continuous paper S and the cut paper CS conveyed through the conveyance port from inside the main body case 12 are placed on the outer surface of the left side wall 12a of the main body case 12 in which such a conveyance port is formed. A transporting device 27 is provided for transporting the product to the outlet. As for this conveyance apparatus 27, the whole apparatus of a unit structure can be attached or detached with respect to the main body case 12. FIG. The transport device 27 transports the continuous paper S and the cut paper CS through different transport paths and discharges them from different discharge ports.

Next, the conveying device 27 will be described with reference to FIGS.
As shown in FIG. 2, the transport device 27 includes a case 31 that is hollow inside. Below the right side wall 31 a of the case 31, a carry-in entrance for carrying the continuous paper S and cut paper CS conveyed from the main body case 12 side via the roller pair 20 and the curl correction unit 22 into the case 31. An opening 32 is formed. Further, above the right side wall 31a of the case 31 (that is, above the carry-in port 32 in the vertical direction), the long cut paper CS or the continuous paper S is discharged from the case 31 to the outside of the case 31. A discharge port 33 is formed as an opening. A short discharge port 34 for discharging the short cut sheet CS from the inside of the case 31 to the outside of the case 31 is formed below the left side wall 31b of the case 31 (that is, obliquely above the left side of the carry-in port 32). ing.

  In the case 31, an introduction portion 35 that guides the continuous paper S and the cut paper CS into the case 31 through the conveyance opening of the main body case 12 and the carry-in port 32 of the case 31, and the continuous portion guided by the introduction portion 35. A reversing conveyance unit 36 is provided for conveying the paper S to the long discharge port 33 at an upper position while reversing the paper S. In addition, in the case 31, a transport unit for transporting the cut sheet CS guided by the introduction unit 35 to the short discharge port 34 in an obliquely upper left position with the recording surface facing upward. 136 is provided.

  The introduction part 35 includes a first fixed introduction guide 37 and a second fixed introduction guide 38 each having a substantially rectangular plate shape fixed to the case 31. The first fixed introduction guide 37 is inclined from the bottom surface 31c side of the case 31 toward the upper left side (in other words, ascending toward the downstream side in the transport direction). Further, the second fixed introduction guide 38 is disposed above the first fixed introduction guide 37 in the vertical direction and is gently inclined toward the upper left side. Then, the upper surface of the first fixed introduction guide 37 and the lower surface of the second fixed introduction guide 38 function as conveyance path surfaces 37a and 38a for conveying the cut paper CS and the continuous paper S, so that the first fixed introduction guide 37 and An introduction path is formed between the second fixed introduction guides 38.

  The reversing conveyance unit 36 includes a reversing path forming member 39 that forms a reversing path for guiding the long cut paper CS and the continuous paper S to the long discharge port 33 while reversing the long cut paper CS and the continuous paper S, and a long discharge port in the reversing path. The first to third transport roller pairs 41 to 43 that impart transport force to the long cut paper CS and the continuous paper S that are transported toward 33 are provided.

  The reversing path forming member 39 includes a plate-shaped first fixed reversing guide 44 and a second fixed reversing guide 45 which are fixed to the case 31 and have a substantially circular arc shape in cross section. The second fixed reversing guide 45 is a cut sheet CS between the inner fixed surface of the first fixed reversing guide 44 and the inner peripheral surface of the first fixed reversing guide 44 (the right side surface in FIG. 2). In addition, the second fixed reversing guide 45 is arranged so that the outer peripheral surface (the left side surface in FIG. 2) faces each other with a gap slightly wider than the thickness dimension of the continuous paper S. The right side surface of the first fixed reversing guide 44 and the left side surface of the second fixed reversing guide 45 function as transport path surfaces 44a and 45a for transporting the cut paper CS and the continuous paper S, whereby the first fixed reversing guide 44 An inversion path curved toward the left side is formed between 44 and the second fixed inversion guide 45.

  Further, the length of the first fixed reversing guide 44 on the upstream side in the transport direction is shorter than the length of the second fixed reversing guide 45 on the upstream side in the transport direction. That is, in the conveying direction along the curved reversing path, the first fixed reversing guide 44 has an end on the upstream side in the conveying direction on the downstream side in the conveying direction with respect to an end on the upstream side in the conveying direction of the second fixed reversing guide 45. The length on the upstream side in the transport direction is formed to be short.

  The first to third transport roller pairs 41 to 43 are along the transport direction of the long cut paper CS or the continuous paper S from the upstream side of the reverse path to the downstream side (from the lower side to the upper side in FIG. 2). The first transport roller pair 41, the second transport roller pair 42, and the third transport roller pair 43 are arranged in this order. Specifically, the first transport roller pair 41 is disposed at the position of the upstream end of the reversing path formed by the reversing path forming member 39 (that is, the end of the introduction unit 35 on the downstream side in the transport direction). The third transport roller pair 43 is disposed at the downstream end of the reversing path (that is, the left side of the long discharge port 33). Further, the second transport roller pair 42 is located at a substantially center of the reversal path (that is, between the first and third transport roller pairs 41, 43 on the left side of the first and third transport roller pairs 41, 43). Is arranged.

  Then, the long cut sheet CS and the continuous sheet S conveyed to the reversing conveyance unit 36 are formed between the first fixed reversing guide 44 and the second fixed reversing guide 45 by the first to third conveying roller pairs 41 to 43. The reverse path is conveyed from the upstream side to the downstream side (that is, from the lower side to the upper side in FIG. 2). Then, the long cut paper CS and the continuous paper S are discharged from the long discharge port 33 toward the upper surface 12b of the main body case 12 with the recording surface facing downward. As described above, in the transport device 27, the long transport path for transporting the long cut paper CS or the continuous paper S is configured by the introduction path and the reverse path.

  The transport unit 136 includes a first fixed transport guide 144 and a second fixed transport guide 145 that are fixed to the case 31 and have a substantially rectangular plate shape. The first fixed conveyance guide 144 has a mode in which the end on the upstream side in the conveyance direction is close to the end on the upstream side in the conveyance direction of the first fixed reversal guide 44 in the reverse conveyance unit 36, and the left side of the first fixed reversal guide 44. To the short discharge port 34 so as to be substantially horizontal. Further, the second fixed conveyance guide 145 is disposed below the first fixed conveyance guide 144 in the vertical direction, and the first conveyance roller 145 is arranged in such a manner that the upstream end in the conveyance direction is close to the first conveyance roller pair 41. The roller pair 41 is gently inclined upward from the left side toward the short outlet 34 toward the left side.

  The lower surface of the first fixed transport guide 144 and the upper surface of the second fixed transport guide 145 function as a transport path surface that transports a relatively short cut sheet CS, so that the first fixed transport guide 144 and the second fixed transport guide 144 A short conveyance path for conveying the short cut sheet CS is formed between the conveyance guides 145. Then, the cut sheet CS conveyed through the introduction path of the introduction unit 35 passes through the first conveyance roller pair 41 and then is formed between the first fixed conveyance guide 144 and the second fixed conveyance guide 145. Is conveyed from the upstream side toward the downstream side (that is, from the right side to the left side in FIG. 2). Then, the short cut sheet CS is discharged out of the conveying device 27 from the short discharge port 34 in a state where the recording surface is directed upward.

  Further, a flapper 46 is disposed at a position between the first fixed reversing guide 44 and the first fixed conveying guide 144 on the upstream side in the conveying direction and the first conveying roller pair 41. In other words, the flapper 46 oscillates (displaces) at that position, so that the long cut paper CS and the continuous paper S are discharged from the path portion on the downstream side of the transport path from the position. And a short conveyance path for discharging the short cut sheet CS.

  Next, the first to third transport roller pairs 41 to 43 will be described. Since the first to third transport roller pairs 41 to 43 all have the same configuration, the configuration will be described below by taking the first transport roller pair 41 as an example. Further, in FIG. 3 used for explaining the first transport roller pair 41, the cross-sectional illustrations of the first fixed introduction guide 37 and the second fixed introduction guide 38 are omitted.

  As shown in FIG. 3, the first transport roller pair 41 includes a drive shaft 41a extending in the width direction (front-rear direction) intersecting the transport direction of the continuous paper S and the cut paper CS, and the axial direction with respect to the drive shaft 41a. Are provided with a plurality of (six in the present embodiment) drive rollers 41b that are supported so as to be integrally rotatable at intervals. The drive roller 41b is formed in a cylindrical shape with a relatively low friction coefficient, for example, a metal material. The drive shaft 41a is connected to the output shaft of the transport motor 47 so that the drive can be transmitted. The first transport roller pair 41 includes a plurality of (six in this embodiment) driven rollers 41d that are rotatably supported at intervals in the axial direction with respect to a rotation shaft 41c extending in the front-rear direction. . The driven roller 41d is formed in a cylindrical shape with, for example, hard rubber having a relatively high friction coefficient.

  The plurality of drive rollers 41b and the plurality of driven rollers 41d in the first transport roller pair 41 are arranged to face each other with the continuous paper S and the cut paper CS interposed therebetween in the axial direction of the drive shaft 41a and the rotation shaft 41c. ing. Then, the continuous paper S and the cut paper CS are conveyed by the driven roller 41d being driven and rotated in accordance with the driving rotation of the drive roller 41b while the continuous paper S and the cut paper CS are sandwiched between the drive roller 41b and the driven roller 41d. Is supposed to do. In addition, as shown in FIG. 2, the first transport roller pair 41 has a drive roller 41b positioned relatively upward (that is, the second fixed reversing guide 45 side) at the upstream end of the transport path, and is driven. The roller 41d is disposed so as to be relatively located on the lower side (that is, the flapper 46 side).

  As shown in FIG. 2, the second transport roller pair 42 is supported by the drive roller 42b made of a metal material with a low friction coefficient supported by the drive shaft 42a and the rotary shaft 42c, like the first transport roller pair 41. And a driven roller 42d made of hard rubber having a high friction coefficient. In the second transport roller pair 42, the drive roller 42b is positioned on the left side in the horizontal direction (that is, the first fixed reversing guide 44 side) and the driven roller 42d is horizontal at a position approximately at the center of the long transport path. It arrange | positions so that it may be located in the right side (namely, 2nd fixed inversion guide 45 side) of a direction.

  Similarly to the first and second transport roller pairs 41 and 42, the third transport roller pair 43 is supported by a drive roller 43b made of a metal material with a low friction coefficient supported by the drive shaft 43a, and a rotary shaft 43c. And a driven roller 43d made of hard rubber having a high friction coefficient. As shown in FIG. 2, in the third transport roller pair 43, the drive roller 43b is positioned on the lower side in the vertical direction (that is, on the second fixed reversing guide 45 side) at the downstream end of the long transport path. In addition, the driven roller 43d is disposed so as to be positioned on the upper side in the vertical direction (that is, on the first fixed reversing guide 44 side).

  Further, the friction coefficients of the respective drive rollers 41b to 43b in the first to third transport roller pairs 41 to 43 are all the same value (μ1 as an example). The friction coefficients of the driven rollers 41d to 43d in the first to third transport roller pairs 41 to 43 are all the same value (μ2 as an example). The friction coefficient (μ1) of the drive rollers 41b to 43b is smaller than the friction coefficient (μ2) of the driven rollers 41d to 43d (μ1 <μ2).

  Further, the first to third transport roller pairs 41 to 43 are first to first driven rollers 41d to 43d for moving in a direction approaching and separating from the counterpart driving rollers 41b to 43b. Third movement mechanisms 48 to 50 are provided. That is, the first to third moving mechanisms 48 to 50 sandwich the continuous paper S and the cut paper CS in proximity to the corresponding driving rollers 41b to 43b of the paired driven rollers 41d to 43d. It is moved between the position and the separated position where the continuous paper S and the cut paper CS are not sandwiched apart from the corresponding driving rollers 41b to 43b.

  As shown in FIG. 3, the first moving mechanism 48 in the first transport roller pair 41 is provided on one end side (right end side in FIG. 3) of the rotation shaft 41c. As shown in FIG. 4A, the first moving mechanism 48 includes a plate-like first plate 51 formed in a substantially L shape in front view, and a plate-like first cam that contacts the first plate 51. And a member 52. The first cam member 52 is connected to an output shaft of a first cam motor 53 that drives and rotates the first cam member 52 so that power can be transmitted. That is, the first cam member 52 rotates about the rotation shaft 52 a as the first cam motor 53 is driven.

  The first plate 51 includes a horizontal portion 51a extending in the left-right direction and a vertical portion 51b extending from the left end side of the horizontal portion 51a toward the upper side in the vertical direction. A rotation shaft 41c is fixed to the right end side of the horizontal portion 51a. Further, the vertical portion 51b is formed with a flat convex portion 51c that protrudes from the right end of the vertical portion 51b toward the front side (that is, the front side in the vertical direction with respect to the first plate 51). And the outer peripheral surface of the 1st cam member 52 is contact | abutted from the left side with respect to the convex part 51c.

  Therefore, when the first cam motor 53 is driven in the forward direction in the state shown in FIG. 4A, the first cam member 52 is rotated approximately 90 degrees in the clockwise direction in FIG. The Then, as shown in FIG. 4B, the first plate 51 is rotated around the rotating shaft 51d provided in the bent portion of the first plate 51 as the first cam member 52 rotates. By rotating in the rotating direction, the rotation shaft 41c and the driven roller 41d in the first transport roller pair 41 move downward on the left side. Further, the rotation shaft 41 c and the driven roller 41 d in the first transport roller pair 41 have an outer peripheral surface that is an example of a roller surface of the driven roller 41 d positioned below the transport path surface 37 a of the first fixed introduction guide 37. (See FIG. 11).

  Further, when the first cam motor 53 is driven in the reverse direction from the state shown in FIG. 4B, the first cam member 52 rotates about 90 degrees in the counterclockwise direction in FIG. Is done. Then, the first plate 51 is rotated in the counterclockwise direction in FIG. 4 about the rotation shaft 51 d and returns to the position shown in FIG. 4A, and in the first transport roller pair 41 according to the rotation of the first plate 51. The rotating shaft 41c and the driven roller 41d move upward to the right and return to the position shown in FIG.

  In addition, the second moving mechanism 49 in the second transport roller pair 42 is provided on one end side of the rotating shaft 42 c, similarly to the first moving mechanism 48. As shown in FIG. 5A, the second moving mechanism 49 includes a second plate 54 that is substantially L-shaped in front view and a second cam member that contacts the second plate 54, as with the first moving mechanism 48. 55. The second cam member 55 is connected to the output shaft of the first cam motor 53 so that power can be transmitted. That is, the second cam member 55 rotates around the rotation shaft 55 a as the first cam motor 53 is driven.

  The second plate 54 includes a horizontal portion 54a extending in the left-right direction and a vertical portion 54b extending from the left end side of the horizontal portion 54a toward the upper side in the vertical direction. On the right end side of the horizontal portion 54a, a flat plate-like convex portion 54c protruding from the lower end of the horizontal portion 54a toward the front side (that is, the front side in the vertical direction with respect to the second plate 54) is formed. A rotating shaft 42c is fixed to the upper end side of the vertical portion 54b. And the outer peripheral surface of the 2nd cam member 55 contact | abuts from the upper side with respect to the convex part 54c.

  Accordingly, when the first cam motor 53 is driven in the forward direction in the state shown in FIG. 5A, the second cam member 55 is rotated about 90 degrees in the clockwise direction in FIG. 5 about the rotation shaft 55a. The Then, as shown in FIG. 5B, the second plate 54 is rotated around the rotating shaft 54d provided at the bent portion of the second plate 54 as the second cam member 55 rotates. By being rotated in the rotating direction, the driven roller 42d in the second transport roller pair 42 is moved to the right side. Further, the rotation shaft 42 c and the driven roller 42 d in the second conveyance roller pair 42 move so that the outer peripheral surface of the driven roller 42 d is located on the right side of the conveyance path surface 45 a of the second fixed reversing guide 45. (See FIG. 11).

  When the first cam motor 53 is driven in the reverse direction from the state shown in FIG. 5B, the second cam member 55 rotates about 90 degrees around the rotation shaft 55a in the counterclockwise direction in FIG. Is done. Then, the second plate 54 is rotated in the counterclockwise direction in FIG. 5 around the rotation shaft 54d to return to the position shown in FIG. 5A, and in the second transport roller pair 42 according to the rotation of the second plate 54. The rotating shaft 42c and the driven roller 42d move to the left and return to the position shown in FIG.

  Further, the third moving mechanism 50 in the third transport roller pair 43 is provided on one end side of the rotating shaft 43c, similarly to the first and second moving mechanisms 48 and 49. As shown in FIG. 6A, the third moving mechanism 50 in the third transport roller pair 43 is similar to the first moving mechanism 48 and the second moving mechanism 49, and has a substantially L-shaped third plate 56 in front view. And a third cam member 57 that contacts the third plate 56. The third cam member 57 is connected to the output shaft of the first cam motor 53 so that power can be transmitted. That is, the third cam member 57 rotates about the rotation shaft 57 a as the first cam motor 53 is driven.

  The third plate 56 includes a horizontal portion 56a that extends downward in the right direction in the left-right direction and a vertical portion 56b that extends downward in the left direction from the left end side of the horizontal portion 51a. A rotating shaft 43c is fixed to the right end side of the horizontal portion 56a. Further, the vertical portion 56 b is formed with a flat plate-like convex portion 56 c that protrudes from the right end of the vertical portion 56 b toward the front side (that is, the front side in the vertical direction with respect to the third plate 56). And the outer peripheral surface of the 3rd cam member 57 is contact | abutted from the left side with respect to the convex part 56c.

  Therefore, when the first cam motor 53 is driven in the forward direction in the state shown in FIG. 6A, the third cam member 57 rotates approximately 90 degrees in the counterclockwise direction in FIG. 6 about the rotation shaft 57a. Moved. Then, as shown in FIG. 6B, the third plate 56 is rotated counterclockwise in FIG. 6 around the rotation shaft 56 d provided at the bent portion of the third plate 56 as the third cam member 57 rotates. By being rotated in the turning direction, the driven roller 43d in the third transport roller pair 43 is moved upward in the vertical direction. Further, the rotation shaft 43 c and the driven roller 43 d in the third transport roller pair 43 move so that the outer peripheral surface of the driven roller 43 d is located above the transport path surface 44 a of the first fixed reversing guide 44. (See FIG. 11).

  When the first cam motor 53 is driven in the reverse direction from the state shown in FIG. 6B, the third cam member 57 rotates about 90 degrees in the clockwise direction in FIG. 6 about the rotation shaft 57a. Then, the third plate 56 is rotated in the clockwise direction in FIG. 6 around the rotation shaft 56 d to return to the position shown in FIG. 6A, and the third transport roller pair 43 rotates according to the rotation of the third plate 56. The shaft 43c and the driven roller 43d move downward and return to the position shown in FIG.

  Next, the 1st and 2nd fixed introduction guides 37 and 38 in the introduction part 35 are demonstrated based on FIG.7 and FIG.8. In FIG. 7, the second fixed introduction guide 38 located above the first fixed introduction guide 37 and the second fixed inversion guide 45 located above the first fixed inversion guide 44 in FIG. Illustrated by virtual lines.

  As shown in FIGS. 7 and 8 (a) and 8 (b), the first and second fixed introduction guides 37 and 38 are continuously connected to the downstream end portions in the conveying direction so that the end portions are comb-shaped. Rectangular concave portions 37b and 38b along the conveyance direction (left and right direction) of the paper S and the cut paper CS are cut out at a plurality of positions spaced in the width direction of the continuous paper S and the cut paper CS. In other words, at the end of the first fixed introduction guide 37 and the second fixed introduction guide 38 on the downstream side in the conveyance direction, the driving roller 41b and the driven roller 41d of the first conveyance roller pair 41, the width direction of the continuous paper S and the cut paper CS. The same number (six in this embodiment) of recesses 37b and 38b as the driving roller 41b and the driven roller 41d are formed at a plurality of positions corresponding to. In other words, a plurality of rectangular convex portions 37c, 38c toward the downstream side in the transport direction are formed at the end portions of the first and second fixed introduction guides 37, 38 on the downstream side in the transport direction. In the width direction of the paper CS, it is formed at a plurality of (seven in this embodiment) positions avoiding the region where the driving roller 41b and the driven roller 41d are arranged.

  Then, as shown in FIG. 8A, these convex portions 37 c in the first fixed introduction guide 37 have a rotation axis so as to overlap with the driven roller 41 d of the first conveyance roller pair 41 in the conveyance direction (left-right direction). It extends to a position above 41c in the vertical direction. Further, these convex portions 38c in the second fixed introduction guide 38 extend to a position below the drive shaft 41a in the vertical direction so as to overlap the drive roller 41b of the first transport roller pair 41 in the transport direction (left-right direction). doing.

Next, a flapper 46, which is an example of a path switching member that switches the transport path of the continuous sheet S and the cut sheet CS, will be described with reference to FIGS.
As shown in FIGS. 7 and 8A and 8B, the flapper 46 includes a first guide 61 having a substantially rectangular plate shape in plan view, and a plane disposed so as to overlap the upper direction of the first guide 61 in the vertical direction. And a second guide 62 having a substantially rectangular plate shape. The length of the first guide 61 in the width direction (front-rear direction) intersecting the conveyance direction of the continuous paper S and the cut paper CS is formed to be shorter than the length of the second guide 62 in the width direction. Further, the first guide 61 has a length along the transport direction (left-right direction) of the continuous paper S and the cut paper CS in the first guide 61 longer than the length of the second guide 62 in the transport direction (left-right direction). It is formed to be large. That is, the end of the first guide 61 on the downstream side in the transport direction extends from the end of the second guide 62 on the downstream side in the transport direction toward the downstream side in the transport direction (toward the left side).

  As shown in FIG. 8A, the second guide 62 is in contact with the upstream end of the first guide 61 aligned with the upstream end of the first guide 61 in the transport direction. The second guide 62 has a space AS between the end of the second guide 62 on the downstream side in the transport direction with respect to the first guide 61 and the end of the first guide 61 on the downstream side in the transport direction. It arrange | positions so that it may become a position state. That is, the distance between the second guide 62 and the first guide 61, that is, the space portion AS formed between the second guide 62 and the first guide 61 increases toward the downstream side in the transport direction. It is arranged so as to incline toward the upper side. Then, upstream end portions of the first fixed reversing guide 44 and the first fixed transport guide 144 in the transport direction are inserted into the space AS formed between the first guide 61 and the second guide 62. It is supposed to be located. That is, the end on the downstream side in the transport direction of the second guide 62 is transported along the transport path by being positioned vertically above the end of the first fixed reversing guide 44 on the upstream side in the transport direction. The continuous paper S is arranged so as to overlap from above in the thickness direction. Further, the end portion of the first guide 61 on the downstream side in the transport direction is located on the lower side in the vertical direction with respect to the end portion of the first fixed reversing guide 44 on the upstream side in the transport direction, thereby transporting along the transport path. The cut sheets CS are arranged so as to overlap from the lower side in the thickness direction.

  Further, as shown in FIG. 7, the continuous paper S and the cut paper CS are arranged at the upstream ends of the first guide 61 and the second guide 62 on the upstream side in the conveying direction so that the ends are comb-like. Rectangular recesses 61a and 62a along the conveyance direction (left-right direction) are cut out at a plurality of positions spaced in the width direction of the continuous paper S and the cut paper CS. That is, at the upstream end of each of the first guide 61 and the second guide 62 in the transport direction, the drive roller 41b and the driven roller 41d of the first transport roller pair 41 correspond to the continuous paper S and the cut paper CS in the width direction. The same number (six in this embodiment) of recesses 61a and 62a as the driving roller 41b and the driven roller 41d are formed at a plurality of positions. In other words, a plurality of rectangular protrusions 61b and 62b toward the upstream side in the transport direction are provided at the end portions of the first guide 61 and the second guide 62 on the upstream side in the transport direction, and the continuous paper S and the cut paper CS. Are formed at a plurality of positions (seven in this embodiment) avoiding the region where the driving roller 41b and the driven roller 41d are arranged.

  And as shown to Fig.8 (a), these convex parts 61b and 62b are the positions which adjoin to the rotating shaft 41c so that it may overlap with the driven roller 41d of the 1st conveyance roller pair 41, and a conveyance direction (left-right direction). It is extended to. On the other hand, the downstream ends of the first guide 61 and the second guide 62 in the transport direction extend linearly along the width direction (left-right direction) intersecting the transport direction of the continuous paper S and cut paper CS. It is formed as follows.

  Further, as shown in FIGS. 7 and 8A and 8B, the second guide 62 has a substantially L shape when viewed from the front and bent toward the left side at a position downstream of the second guide 62 in the transport direction. It is supported on the upper end of the formed plate-like arm 63. On the left end side of the arm 63, one end side of each of the two shafts 64a and 64b that protrudes in a direction perpendicular to the arm 63 is located at a position where the shaft 64a is farther from the bent portion of the arm 63 than the shaft 64b. It is fixed to become. A swing mechanism 65 for swinging the flapper 46 is provided on the other end side of the two shafts 64a and 64b. As shown in FIG. 8A, the swing mechanism 65 has a length in which the upper surface of the second guide 62 is lower than the conveyance path surface (upper surface) 37a of the first fixed introduction guide 37 of the introduction portion 35 as shown in FIG. As shown in FIG. 8B, between the position for the shank and the short position where the lower surface of the first guide 61 is above the transport path surface (lower surface) 38a of the second fixed introducing guide 38 of the introducing portion 35. Swing with.

  As shown in FIGS. 9A and 9B, the swing mechanism 65 includes a plate-like plate 66 and a cam member 67 that abuts against the plate 66. The cam member 67 is connected to an output shaft of a second cam motor 68 that drives and rotates the cam member 67 so as to be able to transmit the drive. That is, the cam member 67 rotates about the rotation shaft 67a as the second cam motor is driven.

  The other end side of the shaft 64b whose one end side is fixed to the arm 63 is rotatably supported by a bent portion that is bent at an obtuse angle at the approximate center of the plate 66. Further, the other end side of the shaft 64 a having one end side fixed to the arm 63 is fixed to the left end side of the plate 66. Further, on the right side of the bent portion of the plate 66 where the shaft 64b is supported, a flat projection 66a is formed so as to protrude from the upper end to the rear side (that is, the rear side in the direction perpendicular to the plate 66). ing. And the outer peripheral surface of the cam member 67 contacts the convex portion 66a from below.

  Therefore, when the second cam motor 68 is driven in the forward direction in the state shown in FIG. 9A, the cam member 67 is rotated by approximately 90 degrees in the clockwise direction in FIG. Then, as shown in FIG. 9B, as the cam member 67 is rotated, the plate 66 is rotated about the shaft 64b in the clockwise direction in the drawing, so that the flapper 46 is rotated about the shaft 64b. As shown in FIG. 2, the end of the flapper 46 on the upstream side in the transport direction moves upward. As shown in FIG. 8 (b), the end of the flapper 46 located in the short position on the upstream side in the transport direction is located vertically above the end of the second fixed introduction guide 38 on the downstream side in the transport direction. ing. The flapper 46 closes the entrance to the reversing path on the upstream side of the reversing conveying unit 36 in the conveying direction (see FIG. 10).

  When the second cam motor 68 is driven in the reverse direction from the state shown in FIG. 9B, the cam member 67 rotates about 90 degrees in the counterclockwise direction in FIG. 9 about the rotation shaft 67a. Then, the plate 66 is rotated in the counterclockwise direction in FIG. 9A around the shaft 64b to return to the position shown in FIG. 9A, and the flapper 46 is rotated in the counterclockwise direction in FIG. It swings clockwise and returns to the position shown in FIG. As shown in FIG. 8A, the end of the flapper 46 positioned in the long position on the upstream side in the transport direction is positioned lower than the end of the first fixed introduction guide 37 on the downstream side in the transport direction. doing. The flapper 46 closes the entrance to the transport path on the upstream side of the transport unit 136 in the transport direction (see FIG. 11).

Next, the operation of the printer 11 configured as described above will be described with reference to FIGS.
First, a case where a relatively short cut sheet CS is cut from the continuous sheet S on which recording has been performed and conveyed will be described. At this time, the driven rollers 41d to 43d in the first to third transport roller pairs 41 to 43 are located at the clamping positions, and the flapper 46 is a short length shown in FIGS. 8B and 9B. It is assumed that it is located at the use position.

  For example, when a short cut sheet CS is selected as a sheet to be cut and conveyed after recording in the printer 11 and the recording process is started, the second cam motor 68 of the conveying device 27 is based on the selected information. Is driven forward. Then, the flapper 46 in the transport device 27 swings (displaces) from the long position which is also the standby position to the short position (see FIG. 8B) which is also the swing position. In addition, each driven roller 41d-43d of the 1st-3rd conveyance roller pair 41-43 remains located in the clamping position. Then, the continuous paper S is fed out from the feeding unit 13 and conveyed from the upstream side to the downstream side in the conveyance direction. Subsequently, when the continuous paper S passes below the recording head 19 in the recording unit 17, recording is performed on the surface of the continuous paper S by ejecting ink from the recording head 19 to the continuous paper S. The

  The continuous paper S to which the ink is attached is further cut downstream and is cut into a relatively short cut paper CS by the cutter 21 when passing below the cutter 21. The cut cut paper CS is further conveyed to the downstream side and passes through the curl correction unit 22. Here, the curling of the short cut paper CS is corrected (decaled) by applying a pinching pressure from the decurling roller 25. Then, the cut sheet CS is transported to the transport device 27.

  As shown in FIG. 10, the short cut sheet CS that has been curled and transported into the transport device 27 is first transported while being in sliding contact with the transport path surface 37 a of the first fixed introduction guide 37 in the introduction unit 35. It is conveyed to the roller pair 41. At this time, the driven roller 41d of the first transport roller pair 41 is located at the clamping position. Therefore, the cut paper CS that passes through the first transport roller pair 41 is sandwiched between the first transport roller pair 41, and the continuous paper S moves downstream (left side) in the transport direction based on the drive rotation of the drive roller 41b. As a result, the driven roller 41d is driven to rotate so that a conveying force is applied from the first conveying roller pair 41. Then, the cut sheet CS is further conveyed downstream.

  When the relatively short cut sheet CS is transported, the flapper 46 is located at the short position, which is also the swinging position, and therefore the entrance to the reverse path in the reverse transport unit 36 is in the transport path. It is blocked by a flapper 46 at an upstream position. Therefore, the short cut paper CS that has passed through the first transport roller pair 41 is suppressed from being carried into the reverse path of the reverse transport unit 36 by the flapper 46. The short cut sheet CS is conveyed to the left side while the recording surface is in sliding contact with the lower surface of the first guide 61 in the flapper 46. That is, the lower surface of the first guide 61 is a conveyance path surface that conveys the cut sheet CS.

  The short cut sheet CS that slides on the lower surface of the first guide 61 is transported while the recorded surface is pressed against the lower surface of the first guide 61 by the transport force applied from the first transport roller pair 41. Will be. Therefore, force is applied to the surface on which the recording of the short cut sheet CS is performed from the end of the first guide 61 on the downstream side in the transport direction. Here, if the end portion of the first guide 61 on the downstream side in the transport direction is formed in a comb-teeth shape, the recording applied to the surface of the cut paper CS by the comb-teeth end portion is performed. In addition to being disturbed, there is a risk that a trace of the slidable contact of the comb-like end portion may be formed on the surface of the cut paper CS.

  However, in the present embodiment, the end of the first guide 61 on the downstream side in the transport direction is formed linearly along the width direction of the cut sheet CS. Therefore, the force from the downstream end of the first guide 61 in the transport direction is uniformly applied to the cut sheet CS passing through the end along the width direction. Even when the cut sheet CS passing through the end of the first guide 61 on the downstream side in the transport direction is transported while being pressed against the first guide 61, the recording applied to the surface is not disturbed and the cut in the first guide 61 is not disturbed. Traces that are in sliding contact with the downstream end in the transport direction are not formed.

  Then, the short cut sheet CS that has passed through the end of the first guide 61 on the downstream side in the conveyance direction is further conveyed to the downstream side (left side in FIG. 10), and the first fixed conveyance guide 144 in the conveyance unit 136. Slide on the bottom surface.

  Here, the upstream end in the transport direction of the first fixed transport guide 144 overlaps the downstream end of the first guide 61 in the transport direction in the thickness direction (vertical direction) of the cut sheet CS. The first guide 61 is positioned above the end portion on the downstream side in the transport direction. That is, the end of the first fixed transport guide 144 on the upstream side in the transport direction is arranged without a gap in the transport direction between the end of the first guide 61 on the downstream side in the transport direction. The cut sheet CS is arranged on the upstream side in the transport direction of the first fixed transport guide 144 arranged so that the leading end in the transport direction (the end on the downstream side in the transport direction) is adjacent to the downstream side in the transport direction of the flapper 46. It is smoothly transported downstream without being caught by the end.

  The short cut paper CS is further conveyed toward the downstream side in the conveyance direction (left side in FIG. 10) with the recording surface facing upward, and then from the short discharge port 34 to the case 31. It is discharged outside.

  Next, a case where a relatively long cut sheet CS is cut from a continuous sheet S (long recording medium) on which recording has been performed and conveyed will be described. At this time, the driven rollers 41d to 43d in the first to third transport roller pairs 41 to 43 are positioned at the clamping position, and the flapper 46 is positioned at the long position which is also the standby position. .

  For example, when a long cut sheet CS is selected as a sheet to be cut and conveyed after recording in the printer 11 and the recording process is started, the first cam motor of the conveying device 27 is based on the selected information. 53 is driven forward. Then, each driven roller 41d-43d of the 1st-3rd conveyance roller pair 41-43 in the conveyance apparatus 27 moves to a separation position. The flapper 46 remains in the long position which is also the standby position. Then, the continuous paper S is fed out from the feeding unit 13 and conveyed from the upstream side to the downstream side in the conveyance direction. Subsequently, when the continuous paper S passes under the recording head 19 in the recording unit 17, ink is ejected from the recording head 19 to the surface of the continuous paper S, whereby recording is performed on the surface of the continuous paper S. Applied.

  Even after the leading end in the transport direction (the end on the downstream side in the transport direction) of the continuous paper S passes below the recording head 19, recording by the recording head 19 on the upstream portion of the continuous paper S is continued. However, it is further conveyed to the downstream side, and its tip passes under the cutter 21. Then, the leading end of the continuous paper S that has passed through the cutter 21 is further conveyed and passes through the curl correction unit 22. Here, since the continuous paper S is continuously recorded by the recording head 19 at the upstream side portion thereof, no pinching pressure is applied from the decurling roller 25. Then, the continuous paper S is conveyed to the conveying device 27 in a curled state without being subjected to curl correction.

  As shown in FIG. 11, the continuous paper S whose leading end portion is transported into the transport device 27 in a state where recording by the recording head 19 continues in the upstream portion is in the second fixed introducing guide 38 in the introducing portion 35. It is conveyed to the first conveying roller pair 41 while being in sliding contact with the conveying path surface 38a. And when the front-end | tip part of the continuous paper S passes the 1st conveyance roller pair 41, the continuous paper S is provided with conveyance force from the drive roller 41b by contact | abutting to the drive roller 41b. On the other hand, the driven roller 41 d of the first transport roller pair 41 is located at a separation position where the outer peripheral surface of the driven roller 41 d is below the transport path surface 37 a in the first fixed introduction guide 37. Therefore, the continuous paper S passing through the first transport roller pair 41 does not come into contact with the driven roller 41d. Then, the continuous paper S on which recording by the recording head 19 is continued in the upstream portion is transported further downstream without being applied with a transport load from the driven roller 41d of the first transport roller pair 41.

  When the continuous paper S is transported, the flapper 46 is located at the long position, which is also the standby position, so the entrance to the transport path in the transport unit 136 is the flapper at a position upstream of the transport path. 46 is blocked. Therefore, the continuous paper S that has passed through the first conveyance roller pair 41 is suppressed from being carried into the short conveyance path of the conveyance unit 136 by the flapper 46. Then, the continuous paper S is conveyed onto the second guide 62 of the flapper 46 with the recording surface facing upward.

  The continuous paper S transported onto the second guide 62 of the flapper 46 is transported further downstream (slanting upward in FIG. 11) while sliding on the upper surface of the second guide 62. That is, the upper surface of the second guide 62 is a conveyance path surface that conveys the continuous paper S. Then, the continuous paper S is transported from the upper surface of the second guide 62 in the flapper 46 onto the transport path surface 44 a of the first fixed reversing guide 44.

  Here, the upstream end in the transport direction of the first fixed reversing guide 44 overlaps the downstream end of the second guide 62 in the transport direction in the thickness direction (vertical direction) of the continuous paper S. The second guide 62 is positioned below the end portion on the downstream side in the transport direction. That is, the upstream end of the first fixed reversing guide 44 in the transport direction is disposed without a gap in the transport direction between the end of the second guide 62 on the downstream side of the transport direction. Then, the continuous paper S is smoothly caught by the second guide without being caught by the upstream end of the first fixed reversing guide 44 arranged so that the leading end thereof is adjacent to the downstream side of the flapper 46 in the transport direction. It is conveyed from the upper surface of 62 onto the conveyance path surface 44 a of the first fixed reversing guide 44.

  Further, since the reversing path is strongly bent, the continuous paper S is transported along the upper surface of the second guide 62 of the flapper 46 and the first fixed reversing guide 44 located on the outer peripheral side (left side in FIG. 11) in the reversing conveying unit 36. It is conveyed while being pressed against the surface 44a. Therefore, force is applied to the continuous paper S passing through the end portion of the second guide 62 from the end portion of the second guide 62 on the downstream side in the transport direction. Here, if the end of the second guide 62 on the downstream side in the transport direction is formed in a comb-like shape, a trace of the comb-like end in sliding contact is formed on the back surface of the continuous paper S. There is a risk.

  However, in the present embodiment, the end of the second guide 62 on the downstream side in the transport direction is formed to extend linearly along the width direction of the continuous paper S. Therefore, the force from the downstream end portion of the second guide 62 in the transport direction is uniformly applied along the width direction to the continuous paper S passing through the end portion. Even if the continuous paper S passing through the end of the second guide 62 on the downstream side in the transport direction is transported while being pressed against the second guide 62, the continuous paper S is in sliding contact with the end of the second guide 62 on the downstream side in the transport direction. No traces are formed.

  Subsequently, the continuous paper S is conveyed further downstream while sliding on the conveyance path surface 44 a of the first fixed reversing guide 44. When the continuous paper S passes through the second transport roller pair 42, the continuous paper S is applied with a transport force from the drive roller 42b by contacting the drive roller 42b disposed on the first fixed reversing guide 44 side. On the other hand, the driven roller 42 d of the second transport roller pair 42 is located at a separation position where the outer peripheral surface of the driven roller 42 d is on the right side of the transport path surface 45 a in the second fixed reversing guide 45. Therefore, the continuous paper S that passes through the second transport roller pair 42 does not come into contact with the driven roller 42d. Then, the continuous paper S on which recording by the recording head 19 continues in the upstream portion applies a transport load from the driven roller 41d of the second transport roller pair 42 in addition to the driven roller 41d of the first transport roller pair 41. It is further conveyed downstream.

  The continuous paper S that has been transported to the downstream side while sliding on the transport path surface 44a of the first fixed reversing guide 44 while the front end portion in the transport direction passes through the second transport roller pair 42 is recorded by being reversed. The surface with the mark faces downward. Then, the continuous paper S slides on the transport path surface 45 a of the second fixed reversing guide 45 by receiving gravity near the upstream side in the transport direction of the third transport roller pair 43.

  When the continuous paper S passes through the third transport roller pair 43, the continuous paper S is brought into contact with the drive roller 43b disposed on the second fixed reversing guide 45 side, so that the transport force is applied from the drive roller 43b. On the other hand, the driven roller 43 d of the third transport roller pair 43 is located at a separation position where the outer peripheral surface of the driven roller 43 d is above the transport path surface 44 a in the first fixed reversing guide 44. Therefore, the continuous paper S that passes through the third transport roller pair 43 does not contact the driven roller 43d. Then, the continuous paper S on which recording by the recording head 19 is continued in the upstream side portion is driven by the driven rollers 41d and 42d of the first and second transport roller pairs 41 and 42, and the driven rollers of the third transport roller pair 43. It is conveyed from 43d to the downstream side without applying a conveyance load.

  Moreover, since each drive roller 41b-43b of the 1st-3rd conveyance roller pair 41-43 is formed with the metal material etc. with a relatively low friction coefficient, it conveys with respect to the continuous paper S based on frictional resistance. Although a force is applied, the frictional resistance is extremely small, so that no conveying load is applied. The continuous paper S that has passed through the reverse conveying unit 36 and whose front and back sides are reversed is discharged from the long discharge port 33 toward the upper surface 12b of the main body case 12 with the recording surface facing downward. The

  In addition, the continuous paper S that has been recorded by the recording head 19 in the upstream portion is cut by the cutter 21 to become a relatively long cut paper CS. When the continuous paper S is cut by the cutter 21, the first cam motor 53 of the transport device 27 is driven in reverse to hold the driven rollers 41 d to 43 d of the first to third transport roller pairs 41 to 43 from the separated position. Move to position. And the elongate cut paper CS will be in the state clamped by the 1st-3rd conveyance roller pair 41-43 (refer FIG. 2).

  Thereafter, the long cut paper CS is moved to the downstream side in the transport direction based on the driving rotation of the drive rollers 41b to 43b. As the driven rollers 41d to 43d are driven to rotate, a conveying force is applied from the first to third conveying roller pairs 41 to 43. Then, the long cut sheet CS is conveyed until the rear end portion (the end portion on the upstream side in the conveyance direction) of the cut sheet CS is discharged out of the case 31 of the conveyance device 27.

According to the above embodiment, the following effects can be obtained.
(1) In the first to third transport roller pairs 41 to 43, the continuous paper S that is a long recording medium is transported in the transport path in which the first to third transport roller pairs 41 to 43 are arranged. In this case, the first to third transport roller pairs 41 to 43 are not sandwiched with respect to the continuous paper S. That is, when the length dimension along the conveyance direction is longer than the distance dimension between the position where the first conveyance roller pair 41 is disposed and the recording position upstream of the position, the continuous paper S is long. When the first to third transport roller pairs 41 to 43 are not sandwiched with respect to the continuous paper S, the transport load applied to the continuous paper S by the first to third transport roller pairs 41 to 43 is sandwiched. Smaller than. Accordingly, the transport load on the continuous paper S passing through the transport path is suppressed. As a result, for example, when the continuous paper S passes between the respective driven rollers 41d to 43d paired with the drive rollers 41b to 43b of the first to third transport roller pairs 41 to 43, Even when recording is simultaneously performed at the recording position on the upstream side portion of the continuous paper S, it is possible to contribute to the suppression of the deterioration of the recording quality.

  (2) When the first to third transport roller pairs 41 to 43 are not sandwiched between the first to third transport roller pairs 41 to 43 with respect to the continuous paper S, each of the driven rollers 41d to 43d. Need only be moved in a direction perpendicular to the axial direction of each of the rotation shafts 41c to 43c and away from the transport path of the continuous paper S. Therefore, the configuration of the transport device 27 that can suppress the transport load can be easily realized.

  (3) In the first to third transport roller pairs 41 to 43, the driven rollers 41d to 43d on the opposite side of the pair are driven by the rotating shafts 41c to 43c rather than the drive rollers 41b to 43b. It is easy to move in the direction crossing the axial direction. Therefore, the first to third transport roller pairs 41 to 43 that are not sandwiched with respect to the continuous paper S can be easily configured. Therefore, it is possible to easily realize the transport device 27 that can suppress the transport load applied to the continuous paper S transported in this manner.

  (4) The driven rollers 41d to 43d of the first to third transport roller pairs 41 to 43 are formed of a material having a higher friction coefficient than the paired counterpart driving rollers 41b to 43b. Therefore, in the clamping state in which the cut sheet CS is sandwiched between the driven rollers 41b to 43b on the other side with which the driven rollers 41d to 43d are paired, sufficient conveyance is performed for the conveyed cut sheet CS. Power can be granted. Therefore, the transport device 27 has a function of suppressing a transport load applied to the continuous paper S when transporting the continuous paper S, and a transport force required for the cut paper CS when transporting the cut paper CS. It is possible to achieve both the function of imparting.

  (5) The end of the flapper 46 on the downstream side in the transport direction is the upstream end of each of the first fixed reversing guide 44 and the first fixed transport guide 144 in the transport direction, and the continuous paper S and cut paper that are transported. It arrange | positions so that it may overlap in the thickness direction of CS. Therefore, the flapper 46, the first fixed reversing guide 44, and the first fixed transport guide 144 that are arranged adjacent to each other in the transport direction of the continuous paper S and the cut paper CS are provided with a useless space between both members in each transport direction. It can arrange | position along each conveyance path. Therefore, even when the flapper 46 is movably provided in the middle of the conveyance path, it is possible to suppress the enlargement of the apparatus in the conveyance direction and the conveyance failure of the continuous paper S and the cut paper CS.

  (6) The flapper 46 has a space AS that allows insertion of the first fixed reversing guide 44 and the first fixed conveying guide 144 on the upstream side in the conveying direction at the downstream end in the conveying direction. Yes. Therefore, the continuous sheet S and the cut sheet CS whose transport direction is switched at the switching position by the flapper 46 are transported upstream of the first fixed reversing guide 44 and the first fixed transport guide 144 disposed adjacent to the downstream side of the flapper 46. It can be smoothly transported to the downstream side without being hooked on the side end.

  (7) The first fixed reversing guide 44 and the first fixed conveying guide 144 that are disposed adjacent to the downstream side of the flapper 46 between the end portions on the downstream side in the conveying direction of the plate-like first guide and second guide. The size of the conveying device 27 and the continuous paper S and cut paper are increased by a simple configuration in which both guides are integrated so that a space AS that allows insertion of the upstream end of each in the conveying direction is formed. CS conveyance failure can be suppressed.

  (8) Each end of the first guide 61 and the second guide 62 of the flapper 46 on the downstream side in the transport direction is formed so as to extend linearly along the width direction. Therefore, when the continuous paper S and the cut paper CS are conveyed while contacting the downstream ends of the first guide 61 and the second guide 62 in the conveyance direction, The forces from the downstream ends of the guide 61 and the second guide 62 are applied uniformly in the width direction intersecting the transport direction of the continuous paper S and the cut paper CS. Accordingly, it is possible to suppress the formation of a slidable trace on the surface of the continuous paper S and the cut paper CS that are in sliding contact with the downstream ends of the first guide 61 and the second guide 62 in the transport direction.

  (9) When the driven roller 41 d of the first transport roller pair 41 moves to the separated position, the outer peripheral surface of the driven roller 41 d moves to a position below the transport path surface 37 a in the first fixed introduction guide 37. To do. Therefore, the continuous paper S passing through the first transport roller pair 41 does not come into contact with the driven roller 41d. Therefore, the first conveyance roller pair 41 further continues the downstream side of the continuous paper S, which is continuously recorded by the recording head 19, without applying a conveyance load from the driven roller 41 d of the first conveyance roller pair 41. Can be transported to. As a result, for example, when the continuous paper S passes between the driving roller 41b and the driven roller 41d of the first transport roller pair 41, recording is simultaneously performed at the recording position on the upstream side portion of the continuous paper S. Even in such a case, it is possible to contribute to suppressing the deterioration of the recording quality.

In addition, you may change the said embodiment as follows.
The recording medium is not limited to the continuous paper S or the cut paper CS, but may be a continuous film or a cut film, for example. Further, the recording medium discharged from the short discharge port 34 is not limited to the cut sheet CS formed by cutting the continuous sheet S in the middle of conveyance, and a cut sheet may be used.

  -Each drive roller 41b-43b and each driven roller 41d-43d of the 1st-3rd conveyance roller pair 41-43 were divided | segmented into plurality by the axial direction of each drive shaft 41a-43a and each rotating shaft 41c-43c. For example, it may have a long cylindrical shape extending along each drive shaft 41a to 43a and each rotation shaft 41c to 43c. In such a case, the downstream end of the first fixed introduction guide 37 and the second fixed introduction guide 38 in the transport direction and the upstream end of the flapper 46 in the transport direction of the first guide 61 and the second guide 62 are arranged. Each convex part 37c, 38c, 61b, 62b does not need to be provided.

  -Each outer peripheral surface of each driving roller 41b-43b in the 1st-3rd conveyance roller pair 41-43 is each outer periphery in each driving roller 41b-43b of the other party by which the friction coefficient of these each outer peripheral surface is a pair. It may not be formed of a member having a higher coefficient of friction than the surface. However, in that case, the cut paper CS is not used, for example, the driving force between the drive rollers 41b to 43b and the driven rollers 41d to 43d in the first to third transport roller pairs 41 to 43 is strong. It is desirable that each of the driven rollers 41d to 43d does not idle when sandwiched.

  The first to third transport roller pairs 41 to 43 are not limited to those that move apart from the respective driving rollers 41b to 43b with which the driven rollers 41d to 43d are paired, but each driving roller 41b. ˜43b may be moved away from each other driven roller 41d˜43d on the other side. In addition, the first to third transport roller pairs 41 to 43 are not limited to one of the paired counterpart rollers that are separated from the other, and both rollers move away from each other in the direction away from each other. May be. Furthermore, the first to third transport roller pairs 41 to 43 are not limited to the pair formed by the drive roller and the driven roller, and may be a pair of drive rollers.

  The first fixed rollers in which the driven rollers 41d to 43d of the first to third transport roller pairs 41 to 43 are positioned on the side where the driven rollers 41d to 43d are arranged on the outer peripheral surface of the driven rollers 41d to 43d. The introduction guide 37, the first fixed reversing guide 44, and the second fixed reversing guide 45 do not have to move until they are located outside the transport path surfaces 37a, 44a, and 45a. However, in that case, each of the driven rollers 41d to 43d is desirably formed of a member having a relatively low coefficient of friction with respect to the cut paper CS.

  -Each driven roller 41d-43d of the 1st-3rd conveyance roller pair 41-43 is not restricted to what moves all together (at the same timing), For example, you may move separately.

-Three or more conveyance roller pairs may be arranged in the conveyance device 27. Also, it may be three or less.
The first conveyance roller pair 41 may not be provided between the first fixed introduction guide 37 and the flapper 46. In that case, a plurality of convex portions 61b at the end of the flapper 46 upstream in the conveying direction formed in a comb shape are formed in the comb shape of the first and second fixed introduction guides 37 and 38. It is desirable to engage with the plurality of recesses 37b, 38b at each end on the downstream side in the transport direction. In such a case, not only between the flapper 46 disposed adjacent to the continuous sheet S and the cut sheet CS in the transport direction and the first fixed reversing guide 44 and the first fixed transport guide 144 on the downstream side, but also the flapper thereof. Also between 46 and the upstream first and second fixed introduction guides 37, 38, no useless space is provided between the adjacent members. Therefore, when the flapper 46 is provided in the middle of the transport path so as to be displaceable, it is possible to further suppress the increase in size of the apparatus in the transport direction.

  The flapper 46 is not limited to the one formed by the two plate-like first guides 61 and the second guides 62. For example, the flapper 46 has a substantially rectangular shape, a triangular shape, or a circular shape when viewed from the bottom side in the conveyance direction. It may be a prism having a substantially triangular shape in a sectional view in which a concave portion such as an arc shape is provided along the conveying direction.

  In the above embodiment, the recording apparatus is embodied in the ink jet printer 11, but the recording apparatus is not limited to the printer, and may be embodied in a FAX apparatus, a copying apparatus, or a multifunction machine having a plurality of these functions. . Also, an ink jet printer may employ a recording apparatus that ejects or discharges liquid other than ink. The present invention can be used in various recording apparatuses including a recording head that discharges a minute amount of liquid droplets. The droplet means a state of the liquid ejected from the recording apparatus, and includes a liquid having a granular shape, a tear shape, or a thread shape. The liquid here may be any material that can be ejected by the recording apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ) And a liquid as one state of a substance, as well as a material in which particles of a functional material made of a solid such as a pigment or metal particles are dissolved, dispersed or mixed in a solvent. Further, representative examples of the liquid include ink and liquid crystal as described in the above embodiment. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. As a specific example of the liquid ejecting apparatus, for example, a liquid containing a material such as an electrode material or a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, a color filter, or the like in a dispersed or dissolved state. There may be used a recording apparatus for ejecting, a recording apparatus for ejecting a bio-organic matter used in biochip manufacturing, a recording apparatus for ejecting a liquid that is used as a precision pipette and a sample, a textile printing apparatus, a microdispenser, or the like. In addition, a transparent resin liquid such as ultraviolet curable resin is used to form a recording device that injects lubricating oil pinpointed into precision machines such as watches and cameras, and micro hemispherical lenses (optical lenses) used in optical communication elements. You may employ | adopt the recording apparatus which injects etching liquid, such as a recording device sprayed on a board | substrate, and an acid, an alkali, etc. in order to etch a board | substrate. The present invention can be applied to any one of these recording apparatuses.

  CS ... cut paper, S ... continuous paper as an example of a long recording medium, 11 ... printer as an example of a recording device, 19 ... recording head, 27 ... transport device, 37 ... first fixed introduction guide, 38 ... Second fixed introduction guide, 39... Reversing path forming member as an example of a transport path forming member, 44... First fixed reversing guide, 45... 2nd fixed reversing guide, 41. 41d ... driven roller, 42 ... second conveying roller, 41b ... driving roller, 42d ... driven roller, 43 ... third conveying roller pair, 43b ... driving roller, 43d ... driven roller, 46 ... flapper as an example of a path switching member , 61 ... 1st guide, 62 ... 2nd guide, 144 ... 1st fixed conveyance guide, 145 ... 2nd fixed conveyance guide.

Claims (5)

In a transport device that is disposed at a position downstream of the recording position at which recording is performed on the recording medium in the transport path and transports the recording medium from the upstream side to the downstream side of the transport path.
It is disposed at a position downstream of the curl correction unit that corrects the curl of the recording medium on which recording has been performed, and is provided at a position upstream of the carry-in port and a carry-in port for carrying the conveyed print medium. A case having a discharge port provided;
A reversing conveyance unit that conveys the recording medium carried into the case from the carry-in port to the discharge port while reversing the recording medium;
The reversing conveyance unit is
An inversion path forming member that forms an inversion path that leads to the discharge port while inverting the recording medium;
The recording medium is transported by rotating at least one of a roller located on one side of the recording medium and a roller located on the other side of the recording medium passing through the reversing path. and a transport roller pair for conveying along a path,
The transport roller pair has a length dimension along the transport direction of the recording medium when the recording medium passes between the rollers, and a position upstream of the position and the position where the transport roller pair is disposed. When the length is longer than the distance between the recording position and the recording position, the two rollers are not sandwiched with respect to the long recording medium. The transport roller pair moves in a direction perpendicular to the axial direction of the roller and away from the transport path when the two rollers are in the non-clamping state. The transport apparatus according to claim 1. The conveyance roller pair includes a drive roller that rotates while being in contact with one side of the recording medium, and a driven roller that is rotated in contact with the other side of the recording medium that is conveyed along with the drive rotation of the drive roller. The transport apparatus according to claim 1, wherein the driven roller moves in a direction away from the drive roller when transporting the long recording medium. The conveying device according to claim 3, wherein the roller surface of the driven roller is formed by a member having a friction coefficient of the roller surface higher than a friction coefficient of the roller surface of the driving roller. And recording means for performing recording on a recording medium conveyed to the downstream side from the upstream side of the conveying path, a curl correcting means for correcting the curl of the recording medium on which recording is performed by said recording means, before type recording A conveying device according to any one of claims 1 to 4 for conveying a medium ,
The curl correcting means transports the recording medium to the transport device without correcting the curl to the recording medium when recording by the recording means continues.
The recording apparatus according to claim 1, wherein the conveying apparatus sets the both rollers in a non-nipping state with respect to the recording medium conveyed in a curled state .

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