JP6107318B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus represented by a facsimile, a printer, and the like.

  In a recording apparatus typified by a facsimile or a printer, a recording paper as an example of a medium is jammed in a conveyance path (called a paper jam, jam, etc.), and the paper when such a paper jam occurs An apparatus configured to perform the removing operation with the rear cover opened is generally known (for example, Patent Documents 1 and 2).

  Further, in the recording apparatus described in Patent Document 3, a reversing roller that forms a reversing path for reversing the recording paper is provided in a curved reversing unit that can be attached to and detached from the recording apparatus main body. The sheet conveyance path inside the apparatus is configured to be exposed.

JP 2003-330239 A JP 2007-279298 A JP 2012-240813 A

  For example, in the recording apparatus described in Patent Document 3, the conveyance path is greatly exposed by removing the curve reversing unit from the apparatus main body, and thereby, it is possible to easily perform the sheet removing operation when a paper jam occurs.

  By the way, the size and weight of the recording apparatus differ depending on the maximum paper size that can be handled. Further, when a curved reversing unit such as that described in Patent Document 3 is configured in a recording apparatus that can handle a larger size of paper, the curved reversing unit is also increased in size and weight, and thus handling is reduced. It will be.

  Therefore, the present invention has been made in view of such a situation, and an object of the present invention is to ensure the ease of jam handling work by configuring the unit body constituting the paper transport path to be detachable from the apparatus main body. On the other hand, even in a recording apparatus that can handle a larger size of paper, it is to maintain good handleability.

  In order to solve the above problems, a recording apparatus according to a first aspect of the present invention includes an apparatus main body provided with a recording head for recording on a medium, an openable / closable opening / closing body provided in the apparatus main body, A unit body that is detachable from a mounting portion that is exposed by opening the opening / closing body in the apparatus main body, and that constitutes a medium transport path for transporting a medium in a state of being mounted on the mounting portion, The unit body includes a reversing roller for reversing the medium fed from the recording head side using the outer circumferential surface, and the outer circumferential surface for both the medium conveying path before reversing by the reversing roller and the medium conveying path after reversing. And a feed roller for applying a conveying force to the medium.

  According to this aspect, the unit body that is provided detachably with respect to the apparatus main body and forms the medium transport path is exposed to the mounting portion that is exposed by opening the openable opening / closing body provided in the apparatus main body. In other words, the unit body does not include the opening / closing body constituting the external appearance of the apparatus main body, and the opening / closing body and the unit body are configured separately, so that the unit body is lightweight. The unit body can be easily attached and detached. Therefore, even when the recording apparatus is increased in size, it is possible to suppress an increase in the weight of the unit body and ensure good handling properties.

  Further, the unit body includes a reversing roller for reversing a medium fed from the recording head side using an outer peripheral surface, a medium conveying path before the reversing by the reversing roller and a medium conveying path after the reversing of the outer peripheral surface. A feed roller that imparts a conveying force to the medium facing both sides, so that the length of the reverse path for reversing the medium by the feed roller can be secured, and the large diameter of the reverse roller Can be suppressed.

  Further, the feed roller faces both the medium transport path before reversing by the reversing roller and the medium transport path after reversal, and applies a transport force to the medium, so that one roller (the feed roller) is before the reversal. This contributes to both the medium transport path and the medium transport path after the reversal, whereby the number of rollers arranged can be reduced, and the cost increase can be suppressed.

The recording apparatus according to a second aspect of the present invention is characterized in that, in the first aspect, a closed posture is defined by contacting the unit body with the opening / closing body closed.
According to this aspect, since the closing posture is defined by contacting the unit body when the opening / closing body is closed, the relative positional relationship between the opening / closing body and the unit body is accurately determined. Thereby, when a medium conveyance path is formed by the opening / closing body and the unit body, the medium conveyance path can be appropriately formed.

  According to a third aspect of the present invention, in the second aspect, the recording apparatus includes a medium support tray that supports the medium before feeding, and the supply path of the medium supplied through the medium support tray is reversed. It is characterized by merging with a medium conveyance path formed by a roller.

  According to this aspect, the medium support tray that supports the medium before feeding is provided, and the supply path of the medium supplied via the medium support tray joins the medium conveyance path formed by the reversing roller. Since the reverse roller also constitutes a medium supply path from the medium support tray, it is possible to save space and reduce the number of parts.

  A recording apparatus according to a fourth aspect of the present invention is the recording apparatus according to the third aspect, wherein the medium support tray is provided on the opening / closing body, and is supplied via the medium support tray by opening the opening / closing body. It is characterized in that at least a part of the medium supply path is exposed.

  According to this aspect, the medium support tray is provided on the opening / closing body, and opening the opening / closing body exposes at least a part of the supply path of the medium supplied through the medium support tray. By opening the opening / closing body, the medium jammed in the supply path can be easily removed.

  A recording apparatus according to a fifth aspect of the present invention is the recording apparatus according to any one of the first to fourth aspects, further comprising a medium accommodating portion capable of accommodating a plurality of media, and supplying a medium fed from the medium accommodating portion. The feeding path is joined to a medium transport path formed by the reversing roller.

  According to this aspect, if the feeding path of the medium fed from the medium container that can accommodate a plurality of media merges with the medium transport path formed by the reversing roller, that is, if the reversing roller is only the reversing path. In addition, since a non-inversion path is also configured, it is possible to save space and reduce the number of parts.

  A recording apparatus according to a sixth aspect of the present invention is the recording apparatus according to the fifth aspect, wherein the unit body is removed from the mounting portion, whereby the joining portion of the feeding path and the medium transport path is removed together with the unit body. It is characterized by that.

  According to this aspect, even when a paper jam occurs in the feeding path and the medium conveyance path, the unit that the rear cover is opened and the merging section between the feeding path and the medium conveyance path is opened from the mounting portion. And the medium can be easily removed.

  According to a seventh aspect of the present invention, in the fifth or sixth aspect, the first driven roller that nips the medium with the reversing roller is provided in the feeding path of the medium fed from the medium accommodating portion. The first driven roller is provided on the opening / closing body, and the first driven roller is separated from the reversing roller by opening the opening / closing body.

  According to this aspect, the first driven roller is separated from the reversing roller by opening the opening / closing body, that is, the nip of the medium between the first driven roller and the reversing roller is released. When the medium is jammed in the feeding path of the medium fed from the storage unit, the medium can be easily removed.

  According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the unit body is connected to a drive transmission unit that transmits a driving force on the apparatus body side, and the drive transmission unit is driven. A driven transmission unit that transmits force to the reversing roller is provided.

  According to this aspect, the unit body includes a driven transmission unit that is connected to the drive transmission unit that transmits the driving force on the apparatus main body side and transmits the driving force of the drive transmission unit to the reversing roller. Therefore, it is not necessary to provide a drive source in the unit body, and an increase in the weight of the unit body can be suppressed.

  According to a ninth aspect of the present invention, in any one of the first to eighth aspects, the unit body includes an openable / closable cover including a second driven roller that nips a medium with the reversing roller. The second driven roller is separated from the reversing roller by opening the cover.

  According to this aspect, since the second driven roller is separated from the reversing roller by opening the cover, a medium clogged inside the unit body by opening the cover, for example, a small size medium Can be easily removed.

  According to a tenth aspect of the present invention, in the ninth aspect, the reversing roller and the feed roller are disposed on the rear side with respect to the recording head arrangement region in the apparatus front-rear direction, and in the apparatus height direction. It overlaps with the arrangement area of the recording head.

  According to this aspect, the reversing roller and the feed roller are arranged on the rear side with respect to the arrangement area of the recording head in the longitudinal direction of the apparatus and overlap the arrangement area of the recording head in the apparatus height direction. Therefore, it is possible to avoid overlap of the arrangement area of the recording head and the arrangement area of the reversing roller and the feed roller in the apparatus height direction, and suppress an increase in the dimension in the apparatus height direction.

According to an eleventh aspect of the present invention, in any one of the first to tenth aspects, the unit body is provided with a grip portion.
According to this aspect, since the unit body is provided with the grip portion, the workability when attaching and detaching the unit body is facilitated.

1 is a perspective view of a printer according to the present invention. FIG. 3 is a rear perspective view of the printer according to the invention. FIG. 3 is a side sectional view showing a paper conveyance path of the printer according to the invention. FIG. 3 is a side cross-sectional view illustrating a state where a transport unit is removed from the paper transport path of the printer according to the present invention. FIG. 4 is an enlarged view showing a periphery of a conveyance unit in a paper conveyance path of a printer according to the invention. The perspective view of the conveyance unit which concerns on this invention. FIG. 7A is a perspective view illustrating a state in which a sheet conveyance path is opened in the conveyance unit, and FIG. 7B is a perspective view as viewed from below the conveyance unit. FIG. 3 is a rear perspective view illustrating a state in which a back cover is opened in the printer according to the invention. (A) is the perspective view seen from upper direction in the state which opened the back cover in the printer which concerns on this invention, (B) is an enlarged view of the back cover in (A). FIG. 4A is a rear perspective view illustrating a state where a transport unit is removed from a printer, and FIG. 4B is an enlarged perspective view illustrating a stopper portion provided in the printer. (A) is explanatory drawing which shows the power transmission path | route to the conveyance unit which concerns on this invention, (B) is an enlarged view of the conveyance unit in (A). (A) is a sectional side view showing a state in which the back cover is opened in the printer according to the present invention, and (B) is a sectional side view showing a state in which the power transmission of the power transmission path in the transport unit is cut off. 12A is a side sectional view showing a state of the transport unit and the stopper portion of the printer in FIG. 12B, and FIG. 13B is a side sectional view showing a state where the transport unit is removed from the printer. The sectional side view of the printer with which the conveyance unit in the 2nd Example was attached. The sectional side view of the printer of the state which removed the conveyance unit in a 2nd Example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, about the same structure in each Example, the same code | symbol is attached | subjected and it demonstrates only in the first Example, The description of the structure is abbreviate | omitted in a subsequent Example.

  1 is a perspective view of a printer according to the present invention, FIG. 2 is a rear perspective view of the printer according to the present invention, and FIG. 3 is a side sectional view showing a paper conveyance path of the printer according to the present invention. 4 is a side sectional view showing a state in which the transport unit is removed from the paper transport path of the printer according to the present invention, and FIG. 5 is an enlarged view showing the periphery of the transport section in the paper transport path of the printer according to the present invention. 6 is a perspective view of the transport unit according to the present invention, FIG. 7A is a perspective view showing a state in which the paper transport path is opened in the transport unit, and FIG. 7B is a view from below of the transport unit. FIG.

  FIG. 8 is a rear perspective view showing a state where the back cover is opened in the printer according to the present invention, and FIG. 9A is a perspective view seen from above in a state where the back cover is opened in the printer according to the present invention. 9B is an enlarged view of the back cover in FIG. 9A, FIG. 10A is a rear perspective view showing a state where the transport unit is removed from the printer, and FIG. 10B is provided in the printer. FIG. 11A is an explanatory diagram showing a power transmission path to the transport unit according to the present invention, and FIG. 11B is an enlarged view of the transport unit in FIG. FIG.

  12A is a side sectional view showing a state in which the back cover is opened in the printer according to the present invention, and FIG. 12B is a side sectional view showing a state in which the power transmission of the power transmission path in the transport unit is cut off. 13A is a side sectional view showing the state of the transport unit and the stopper portion of the printer in FIG. 12B, and FIG. 13B is the side showing the state where the transport unit is removed from the printer. FIG. 14 is a sectional side view of the printer to which the transport unit according to the second embodiment is attached, and FIG. 15 is a side sectional view of the printer with the transport unit removed according to the second embodiment. is there.

  3 and 4 depict the rollers disposed on the paper transport path of the printer 10 in order to illustrate almost all the rollers on the same surface, the depth direction (the front and back direction of the paper in FIG. 3). ) Positions are not necessarily matched (in some cases, they are matched). In the XYZ coordinate system shown in each figure, the X direction indicates the scanning direction of the recording head, the Y direction indicates the depth direction of the recording apparatus, and the Z direction indicates the height direction of the printer. In each figure, the -Y direction is the front side of the apparatus, and the + Y direction side is the back side of the apparatus.

  Referring to FIGS. 1 and 2, a printer 10 according to the present invention is shown. The printer 10 includes an apparatus main body 12 and a document reading device 14 provided on an upper portion of the apparatus main body 12 so as to be rotatable with respect to the apparatus main body 12. The apparatus main body 12 includes an operation panel unit 16 for a user to operate the printer 10 on the front side of the apparatus (FIG. 1-Y direction side), a discharge port 18 opened on the front side of the apparatus, and a lower side of the discharge port 18. And a medium accommodating unit 20 disposed therein.

  In addition, the apparatus main body 12 includes a back cover 22 configured to be rotatable with respect to the apparatus main body 12 on the apparatus rear side (FIG. 2 + Y direction side). In FIG. 2, the back cover 22 is closed with respect to the apparatus main body 12. In addition, the back cover 22 includes a medium support tray 24 that is rotatably connected to the back cover 22 on the free end side that is opposite to a rotation shaft that will be described later.

  Next, with reference to FIGS. 3 and 5, the conveyance path of the paper P as the “medium” in the printer 10 will be described. The printer 10 includes a medium storage unit 20, a transport unit 26, a recording unit 28, and a discharge unit 30 in the apparatus main body 12.

  The medium storage unit 20 includes an upper tray 32 positioned on the upper side in the Z-axis direction, and a lower tray 34 positioned below the upper tray 32. The upper tray 32 and the lower tray 34 are configured to be attachable to and detachable from the apparatus main body 12 from the front side of the apparatus (the −Y direction in FIG. 3).

  The upper tray 32 and the lower tray 34 each contain a plurality of sheets P. In this embodiment, different types of paper are stored in the upper tray 32 and the lower tray 34, but hereinafter referred to as “paper P” unless it is necessary to distinguish between them. Note that the paper P is an example of a medium.

  Pickup rollers 36 and 38 that are rotationally driven by a driving source (not shown) are provided above the upper tray 32 and the lower tray 34, respectively. The pickup rollers 36 and 38 are provided on swing members 44 and 46 that swing around swing shafts 40 and 42, respectively.

  When the paper P stored in the upper tray 32 is fed to the downstream side of the transport path based on a command input from the operation panel unit 16, the pickup roller 36 is positioned at the uppermost position of the paper P stored in the upper tray 32. The uppermost sheet P is sent out from the upper tray 32 to the downstream side of the transport path. Similarly, when feeding the paper P stored in the lower tray 34 to the downstream side of the transport path, the pickup roller 38 rotates in contact with the uppermost one of the paper P stored in the lower tray 34. The uppermost sheet P is sent out from the lower tray 34 to the downstream side of the transport path.

  Further, when the back cover 22 is closed with respect to the apparatus main body 12, the inner surface thereof constitutes a part of the transport path of the paper P. For this reason, the feeding path portion 48 formed inside the back cover 22 guides the paper P sent out from the upper tray 32 and the lower tray 34 to the transport unit 26.

  The conveyance unit 26 includes a first roller 50 as a “reversing roller”, a second roller 52 as a “feed roller”, a first conveyance driven roller 54, a second conveyance driven roller 56, and a second roller as a “second driven roller”. 3 conveyance driven roller 58, 4th conveyance driven roller 60, 5th conveyance driven roller 62 as a "1st driven roller", and a pair of conveyance roller 64 are provided.

  Here, the first roller 50, the second roller 52, the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 are detachable from the apparatus main body 12 with a conveyance unit 66 (FIG. 3). 4 and FIG. 6). The transport unit 66 as the “unit body” will be described in detail later. In the present embodiment, the first roller 50 and the second roller 52 are driven to rotate counterclockwise in FIGS. 3 and 5 by a common drive motor 116 described later.

  The transport unit 26 will be described in detail later. The paper P is fed in the transport unit 26 along the transport path by the fifth transport driven roller 62 and the third transport driven roller 58 that contact the first roller 50 and the second transport driven roller 56 and the first transport driven roller 56 that contact the second roller 52. It is conveyed to the conveyance roller 64 via the conveyance driven roller 54. A recording unit 28 is provided on the downstream side of the conveyance path of the conveyance roller 64 of the conveyance unit 26.

  A recording unit 28 is provided on the downstream side of the conveyance path of the conveyance roller 64 of the conveyance unit 26. The recording unit 28 is provided in a lower part of the carriage 68 that can move in the scanning direction (X-axis direction in FIG. 3), a recording head 70 that ejects ink onto the paper P, and the recording head 70. And a platen 72 provided to support the paper P.

  Furthermore, a discharge unit 30 is provided on the downstream side of the conveyance path of the recording unit 28. The discharge unit 30 is provided with a pair of discharge rollers 74 and a discharge stacker 76 on which the paper P discharged from the discharge rollers 74 is placed so as to protrude from the discharge port 18 on the front side of the apparatus (−Y direction). Recording is performed on the first surface of the paper P sent from the transport unit 26 to the recording unit 28 along the transport path. After recording, the paper P is nipped by the discharge roller 74 and discharged to a discharge stacker 76 provided on the front side of the apparatus.

  Further, when recording is performed on both sides of the paper P in the printer 10, after the recording is performed on the first surface of the paper P by the recording unit 28, the paper P is moved backward by the transport roller 64 and the discharge roller 74. The side that was the trailing edge of the sheet when recording is performed on the first surface is the leading edge, and is positioned on the −Z direction side of the second roller 52 in the Z-axis direction. To the reversing path 78. The reverse path 78 is provided below the first roller 50 and the second roller 52 (in the −Z direction in FIG. 3), and is provided so as to merge with the transport path of the paper P from the medium storage unit 20. .

  For this reason, the paper P is sent again to the recording unit 28 from the reverse path 78 via the transport path, the transport path positioned above the first roller 50 and the second roller 52, and recording on the second surface is executed. . After execution of recording, the sheet P is nipped by the discharge roller 74 and discharged to a discharge stacker 76 provided on the front side of the apparatus.

■■■ First Example ■■■■
Next, the conveyance unit 26 will be described in detail with reference to FIGS. 3 and 5. Note that the solid line in FIG. 5 indicates the medium conveyance path from the medium accommodating unit 20, and the broken line indicates the reverse path of the paper P. The 1st roller 50 and the 2nd roller 52 are provided in the position which overlaps in the Z-axis direction in FIG. For this reason, the dimension of the arrangement area of the first roller 50 and the second roller 52 in the Z-axis direction can be minimized.

  Moreover, the 1st roller 50 and the 2nd roller 52 are arrange | positioned at intervals in the Y-axis direction. In the transport path of the paper P, the first roller 50 is positioned on the upstream side of the transport path, and the second roller 52 is positioned on the downstream side of the transport path. Further, the interval is set to be smaller than the minimum length in the conveyance path direction of the paper P corresponding to the printer 10.

  Further, the first roller 50 and the second roller 52 are rearward with respect to the arrangement area of the recording head 70 in the apparatus front-rear direction (Y-axis direction in FIGS. 3 and 5) with respect to the recording head 70 of the recording unit 28 described later. It is located on the side (+ Y direction) and overlaps with the arrangement area of the recording head 70 in the apparatus height direction (Z-axis direction). For this reason, the overlapping of the arrangement area of the recording head 70 in the apparatus height direction (Z-axis direction) and the arrangement area of the first roller 50 and the second roller 52 is avoided, and the arrangement in the apparatus height direction (Z-axis direction) is avoided. An increase in dimensions can be suppressed.

  Moreover, the 1st roller 50 reverses the 1st surface and the 2nd surface of the paper P which were sent from the recording head 70 side using the outer peripheral surface, as shown in FIG. Further, the second roller 52 is a first conveyance path of the paper P reversed by the first roller and a reversing path 78 that is a conveyance path of the paper P before the outer peripheral surface is reversed by the first roller 50. A conveying force is applied to the paper P facing both the conveying path above the roller 50 and the second roller 52.

  Further, the first transport driven roller 54 is positioned above the center axis of the second roller 52 in FIG. 3 and on the front side of the apparatus (the −Y direction side in FIG. 3), and contacts the second roller 52. For this reason, the first transport driven roller 54 nips the paper P with the second roller 52 and rotates following the paper P to transport the paper P. Further, the second transport driven roller 56 is positioned on the upstream side of the transport path from the first transport driven roller 54, and is positioned on the + Z direction side of the second roller 52 in the Z-axis direction in FIG. Abut. For this reason, the second transport driven roller 56 nips the paper P with the second roller 52 and is driven to rotate, and transports the paper P to the first transport driven roller 54.

  For this reason, when the paper P is transported along the transport path by the second roller, the paper P is nipped and transported by the first transport driven roller 54 and the second transport driven roller 56. P skew can be suppressed satisfactorily.

  Further, the third transport driven roller 58 is positioned on the upstream side of the transport path from the second transport driven roller 56, and is positioned on the + Z direction side of the first roller 50 in the Z-axis direction in FIG. Abut. For this reason, the third transport driven roller 58 nips the paper P between the first roller 50 and rotates, and transports the paper P toward the second roller 52.

  A pair of transport rollers 64 is provided on the downstream side of the transport path from the nip position between the second roller 52 and the first transport driven roller 54. As described above, the paper P is along the transport path between the first roller 50 and the third transport driven roller 58, between the second roller 52 and the second transport driven roller 56, and between the second roller 52 and the first transport. While being nipped in sequence with the driven roller 54, it is conveyed to the conveyance roller 64.

  For this reason, when the paper P is transported by the first roller 50 and the second roller 52 along the transport path, the paper P is fed by the third transport driven roller 58, the second transport driven roller 56, and the first transport driven roller 54. Since the sheets are conveyed while being nipped in order, the skew of the sheet P during the conveyance can be further suppressed.

  The path length from the nip position between the second roller 52 and the first transport driven roller 54 to the nip position of the pair of transport rollers 64 in the transport path is smaller than the minimum length in the transport path direction of the paper P corresponding to the printer 10. Is set too small.

  5, the path length of the paper P corresponding to the printer 10 is set so that the leading end side and the rear end side in the transport direction of the paper P do not overlap on the reverse transport path. It is set longer than the maximum length in the transport path direction.

  For this reason, the length of the reversing path 78 for reversing the paper P by the second roller 52 can be secured. Therefore, the increase in the diameter of the first roller 50 can be suppressed, and the second roller 52 can apply a conveying force to the reversing path before and after the reversal of the paper P. The number of arrangements can be reduced, and an increase in cost can be suppressed.

  Further, the fourth transport driven roller 60 is located on the −Z direction side of the second roller 52 in the Z-axis direction in FIG. 3, and contacts the second roller 52. Further, the fifth transport driven roller 62 is positioned on the upstream side of the transport path from the third transport driven roller 58, and the feed path section 48 of the back cover 22 constituting a part of the transport path from the medium storage unit 20. It is provided and contacts the first roller 50. The fifth transport driven roller 62 nips the paper P with the first roller 50 and is driven to rotate, and transports the paper P toward the third transport driven roller 58. Further, as will be described later, the fifth transport driven roller 62 is separated from the first roller 50 when the back cover 22 is open with respect to the apparatus main body 12.

  Here, the conveyance path of the paper P will be described again. The paper P sent out from the upper tray 32 and the lower tray 34 is guided to the feeding path section 48 of the back cover 22 and is connected to the first roller 50 and the first roller 50. 5 is nipped with the transport driven roller 62. Then, the paper P is fed along the outer peripheral surface of the first roller 50 and is nipped between the first roller 50 and the third transport driven roller 58. Then, the paper P is sent to the downstream side of the transport path.

  For this reason, the feeding path of the paper P fed from the medium storage unit 20 (the upper tray 32 and the lower tray 34) joins the transport path formed by the first roller 50. For this reason, the 1st roller 50 comprises a non-inversion path | route with the inversion path | route. This can save space and reduce the number of parts.

  Further, by removing the transport unit 66 from the mounting unit 106, the transport formed by the first roller 50 and the feeding path of the paper P fed from the medium storage unit 20 (the upper tray 32 and the lower tray 34). The junction with the path is removed from the mounting unit 106 together with the transport unit 66. Therefore, even if a paper jam occurs in the feeding path of the paper P fed from the medium storage unit 20 (the upper tray 32 and the lower tray 34) and the transport path formed by the first roller 50, the rear surface Since the cover 22 is opened and the joining portion between the feeding path and the medium transport path is removed together with the transport unit 66 from the mounting portion 106, the paper P can be easily removed.

  Further, the paper P supported by the medium support tray 24 passes through the section between the fifth transport driven roller 62 and the third transport driven roller 58 in the transport path from the medium support tray 24 through the feeding path section 80. The leading end is drawn into the transport path, and the tip thereof is nipped between the first roller 50 and the third transport driven roller 58. Then, the paper P sent from the medium support tray 24 joins the transport path of the paper P transported from the medium storage unit 20 and is sent to the downstream side of the transport path.

  For this reason, the supply path of the paper P supplied from the medium support tray 24 merges with the transport path formed by the first roller 50. For this reason, the first roller 50 can also form a medium supply path from the medium support tray 24. This can save space and reduce the number of parts.

  Further, as shown in FIG. 5, since the second roller 52 is positioned downstream of the first roller 50, the length of the supply path of the paper P supplied via the medium support tray 24 (the recording unit 28). The path length to reach (1) can be ensured. As a result, when the paper P is manually supplied by the user via the medium support tray 24, the user may insert the paper P deeply beyond the recommended setting position. If the leading end reaches the position facing the recording head 70, there is a possibility that recording cannot be performed properly. However, since the length of the supply path of the paper P supplied via the medium support tray 24 can be secured, the occurrence of such a problem can be avoided.

  Next, the sheet P is nipped between the second roller 52 and the second transport driven roller 56. Then, the paper P is sent to the downstream side of the transport path and is nipped between the second roller 52 and the first transport driven roller 54. Thereafter, the paper P is further transported to the pair of transport rollers 64, nipped by the transport rollers 64, sent to the recording unit 28 on the downstream side of the transport path, and recording is performed on the first surface of the paper P. After recording, the paper P is nipped by the discharge roller 74 and discharged to a discharge stacker 76 provided on the front side of the apparatus.

  Further, when recording is performed on both sides of the paper P in the printer 10, after the recording is performed on the first surface of the paper P by the recording unit 28, the paper P is moved backward by the transport roller 64 and the discharge roller 74. The side that was the trailing edge of the sheet when recording is performed on the first surface becomes the leading edge, and is sent to the reversing path 78 positioned on the −Z direction side of the second roller 52 in the Z-axis direction.

  The paper P sent into the reverse path 78 is nipped by the second roller 52 and the fourth transport driven roller 60 and sent to the outer peripheral surface of the first roller 50 on the −Z direction side. The paper P is nipped again between the first roller 50 and the fifth transport driven roller 62 along the outer peripheral surface of the first roller 50. For this reason, the sheet P is curved and inverted. Thereafter, the sheet P is recorded by the transport roller 64 via the first roller 50, the third transport driven roller 58, the second transport driven roller 56, the first transport driven roller 54, and the second roller 52 along the transport path. 28.

  For this reason, the second surface faces the recording head 70. The sheet P on which the recording on the second surface is performed by the recording unit 28 is nipped by the discharge roller 74 and discharged to a discharge stacker 76 provided on the front side of the apparatus.

■■■ Conveyor unit configuration ■■■■■■■■■■■■■■■■■■■■■■■■
Next, the transport unit 66 will be described with reference to FIGS. 6, 7 </ b> A, and 7 </ b> B. The transport unit 66 is configured to be detachable from the apparatus main body 12. A method for attaching / detaching the transport unit 66 to / from the apparatus main body 12 will be described later.

  The transport unit 66 includes a unit main body 82 and a cover portion 84. In this embodiment, the unit main body 82 is provided with a driven transmission portion 86 at the end on the + X direction side. The driven transmission portion 86 includes a first transmission gear 88, a second roller driving gear 90, a second transmission gear 92, and a first roller driving gear 94. The first transmission gear 88 engages with the second roller driving gear 90, the second roller driving gear 90 engages with the second transmission gear 92, and the second transmission gear 92 engages with the first roller driving gear 94. Match.

  The second roller driving gear 90 is connected to the second roller 52 by a shaft (not shown). The first roller driving gear 94 is also connected to the first roller 50 by a shaft (not shown).

  Further, the driven transmission portion 86 of the transport unit 66 is connected to a drive transmission portion 96 on the side of the apparatus main body 12 described later in a state where the transport unit 66 is attached to the apparatus main body 12, and receives driving force from the drive transmission section 96. . The driven transmission unit 86 drives the first roller 50 and the second roller 52 by the driving force of the drive transmission unit 96 on the apparatus main body 12 side. For this reason, it is not necessary to provide a drive source in the transport unit 66, and an increase in the weight of the transport unit 66 can be suppressed.

  In the present embodiment, the first roller 50 and the second roller 52 are arranged in the center in the width direction of the unit body 82 (X-axis direction in FIG. 7A). The first roller 50 is disposed on the rear end side of the unit main body 82 (+ Y direction side in FIG. 7A). The second roller 52 is disposed at a distance from the first roller 50 on the −Y direction side.

  In the present embodiment, the first roller 50 and the second roller 52 are set to have the same diameter. For this reason, the 1st roller 50 and the 2nd roller 52 can be comprised with a common member, and cost reduction can be achieved. In addition, since the first roller 50 and the second roller 52 have the same diameter, the peripheral speed of the outer periphery of the roller, that is, the paper conveyance speed can be easily equalized by making the rotation speeds of both rollers the same. In addition, by setting the first roller 50 and the second roller 52 to have the same diameter, the paper P that is transported in the transport path formed between the unit main body 82 and a cover portion 84 that will be described later is kept horizontal. Can do.

  In addition, since the sheet conveyance speeds of the first roller 50 and the second roller 52 can be made equal, the tensile force is not applied to the sheet P between the first roller 50 and the second roller 52, or the sheet P is bent. Absent. As a result, the paper P can be transported along the transport path.

  Further, the first roller 50 and the second roller 52 are driven by the driving force from the first transmission gear 88. For this reason, the drive source which drives the 1st roller 50 and the 2nd roller 52 can be made common. For this reason, since it is not necessary to provide the drive source of the 1st roller 50 and the 2nd roller 52 separately, a cost increase can be suppressed.

  Moreover, since the 1st roller 50 and the 2nd roller 52 comprise the conveyance unit 66 which can be attached or detached with respect to the apparatus main body 12, it was provided in the apparatus main body 12 by removing the conveyance unit 66 from the apparatus main body 12. The reversing path 78 is exposed, and the paper P jammed when the paper P is jammed (paper jam) can be easily removed.

  6 and 7A, the cover portion 84 is attached to a rotation shaft provided on the −Y direction side of the unit main body 82, and can be opened and closed by rotating with respect to the unit main body 82. It is configured. Specifically, the cover 84 can be in a state where it is closed with respect to the unit main body 82 shown in FIG. 6 and a state where it is open with respect to the unit main body 82 shown in FIG. Further, as shown in FIG. 7A, a first conveyance driven roller 54, a second conveyance driven roller 56, and a third conveyance driven roller 58 are rotatably provided on the inner surface 84a of the cover portion 84.

  The first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 are configured so that the first roller 50 and the second roller 52 are in contact with the unit body 82 when the cover portion 84 is in a closed state. It arrange | positions at the inner surface 84a so that it may contact | abut in the position shown in FIG.

  For this reason, the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 are in contact with the first roller 50 and the second roller 52 in a state where the cover portion 84 is closed with respect to the unit main body 82. Each abuts. Further, the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 are respectively connected to the first roller 50 and the second roller 52 in a state where the cover portion 84 is opened with respect to the unit main body 82. Separate.

  For this reason, by opening the cover 84, the paper P jammed inside the transport unit 66, for example, the small size paper P can be easily removed.

  The unit main body 82 includes an upper surface 82a and a lower surface 82b. When the cover portion 84 is closed with respect to the unit main body 82, the upper surface 82a faces the inner surface 84a of the cover portion 84 with a predetermined interval. For this reason, the upper surface 82a and the inner surface 84a constitute a part of the transport path of the paper P when the cover portion 84 is closed with respect to the unit main body 82. Further, the lower surface 82b has an inversion path 78 (see FIGS. 3 and 5) between the transport unit 66 and the support plate 98 (see FIGS. 3 and 5) of the apparatus body 12 when the transport unit 66 is attached to the apparatus body 12. Configure.

  Further, the first roller 50 and the second roller 52 protrude from the upper surface 82 a and the lower surface 82 b of the unit body 82 to the conveyance path and the reversing path 78. Further, the rear end side (Y direction side in FIG. 6) of the unit main body 82 is opened and exposed even when the cover portion 84 is closed.

  The rear end side (Y direction side in FIG. 6) of the unit main body 82 is the rear cover when the transport unit 66 is mounted on the apparatus main body 12 and the rear cover 22 is closed with respect to the apparatus main body 12. It faces the 22 feeding path portions 48. For this reason, the rear end side of the unit main body 82 and the feeding path portion 48 constitute a part of the transport path from the medium storage unit 20 and a part of the reverse path 78.

  Further, the first roller 50 protrudes from the rear end side of the unit main body 82 to the conveyance path formed by the rear end portion and the feeding path portion 48. For this reason, the outer surface of the first roller 50 protrudes to the transport path and the reverse path on the upper surface 82a, the rear end side, and the lower surface 82b of the unit body 82, and the rotation of the first roller 50 is used for transporting the paper P. be able to.

  In addition, gripping portions 100 projecting toward the + Y direction are provided at both ends in the width direction (X axis direction in FIG. 6) on the rear end side (+ Y direction side in FIG. 6) of the unit main body 82. For this reason, the workability when the transport unit 66 is attached to and detached from the apparatus main body 12 becomes easy.

  Further, on the lower surface 82b of the unit main body 82, protrusions 102 (in the −Z direction in FIG. 7B) project from the lower surface 82b to both ends of the unit main body 82 in the width direction (X-axis direction in FIG. 7B). 6 and 7B) are provided. Further, pressed portions 104 are provided at both ends in the width direction (X-axis direction in FIG. 6) on the rear end side (+ Y direction side in FIG. 6) of the unit main body 82, respectively. The protrusion 102 and the pressed part 104 will be described in detail later.

  Next, referring to FIGS. 8, 9A, 9B, 10A, and 10B, the back cover 22 and the mounting portion 106 of the transport unit 66 of the apparatus main body 12 (FIG. A) Reference) will be described. Referring to FIG. 8, the back cover 22 is open with respect to the apparatus main body 12. At this time, the transport unit 66 is mounted in the apparatus main body 12. Therefore, when the back cover 22 and the medium support tray 24 provided on the back cover 22 are opened with respect to the apparatus main body 12, at least the rear end side (+ Y direction side in FIG. 6) and the first roller 50 at least. A part is exposed to the outside of the apparatus main body 12.

  Therefore, a part of the transport path from the medium storage unit 20 and a part of the supply path from the medium support tray 24 are exposed to the outside of the apparatus main body 12. Further, since at least a part of the first roller 50 is also exposed, the paper P jammed in the transport path and the supply path can be exposed, and the paper P can be easily removed. Work becomes easy.

  Further, when the back cover 22 is open with respect to the apparatus main body 12, the first roller 50 of the transport unit 66 and the fifth transport driven roller 62 provided inside the back cover 22 are separated from each other. Become. For this reason, when the paper P sent from the medium storage unit 20 is jammed in the transport path from the medium storage unit 20, the paper P can be easily removed.

  Referring to FIGS. 9A and 9B, a feeding path portion 48 that constitutes a part of the transport path is provided inside the back cover 22. Further, pressing portions 108 are provided at both ends of the back cover 22 in the X-axis direction in FIG. The pressing portion 108 is provided at a position in the back cover 22 that engages with the pressed portion 104 of the transport unit 66 when the back cover 22 is closed with respect to the apparatus main body 12.

  For this reason, when the back cover 22 is closed with respect to the apparatus main body 12 in the state in which the transport unit 66 is attached to the apparatus main body 12, the pressed part 104 and the pressing part 108 are engaged. For this reason, the closed position of the back cover 22 is defined by contacting the transport unit 66 when the back cover 22 is closed with respect to the apparatus main body 12.

  For this reason, the relative positional relationship between the back cover 22 and the transport unit 66 is accurately determined. For this reason, when the transport path of the paper P is formed by the back cover and the transport unit 66, the feeding path portion 48 of the back cover 22 and the rear end side of the transport unit 66 face each other at an appropriate interval. In addition, the conveyance path of the paper P can be appropriately formed.

  Next, referring to FIG. 10A, a state in which the transport unit 66 is detached from the apparatus main body 12 is shown. The apparatus main body 12 is provided with a mounting portion 106 that is exposed toward the apparatus rear side (the + Y direction side in FIG. 10A) when the rear cover 22 is in an open state. The transport unit 66 can be mounted on the mounting unit 106 by inserting the transport unit 66 from the back side of the apparatus (+ Y direction side) to the −Y direction side.

  Further, since the transport unit 66 is mounted on the mounting portion 106 that is exposed by opening the openable and closable back cover 22 provided in the apparatus main body 12, it is possible to prevent the transport unit 66 from dropping unintentionally. . Further, since the transport unit 66 does not include members constituting the external appearance of the apparatus main body, that is, the back cover 22 and the transport unit 66 are separately configured, the transport unit 66 can be reduced in weight. The transport unit 66 can be easily attached and detached. Further, even when the printer 10 is increased in size, an increase in the weight of the transport unit 66 can be suppressed and good handleability can be ensured.

  Further, referring to FIG. 10B, an end portion on the + X direction side in the width direction of the mounting portion 106 (X-axis direction in FIGS. 10A and 10B) is shown. In the support plate 98 of the apparatus main body 12 constituting the reversing path 78, an inclined surface 110 is provided at an end portion on the + X direction side in the width direction. Although not shown, the inclined surface 110 is also provided at the end of the support plate 98 on the −X direction side. The inclined surface 110 is engaged with the protrusion 102 of the transport unit 66 at a second position (see FIG. 13A), which will be described later, and constitutes a holding unit 112 that holds the transport unit 66 at the second position.

■■■ Power transmission means ■■■■■■■■■■■■■■■■■■■■■■■■
Next, with reference to FIGS. 11A, 11B, 12A, 12B, 13A, and 13B, the apparatus main body 12 of the transport unit 66 is shown. The attachment / detachment method with respect to and the connection and disconnection of the power transmission means will be described.

  11A and 11B, the drive transmission unit 96 of the apparatus body 12 is connected to the driven transmission unit 86 of the transport unit 66. The position of the transport unit 66 with respect to the apparatus main body 12 in a state where the drive transmission unit 96 and the driven transmission unit 86 are connected in the apparatus front-rear direction (Y-axis direction in FIG. 11A) is the first position Y1 (FIG. See B).

  Here, the drive transmission part 96 is comprised as a toothed wheel row | line | column comprised from a some gearwheel. The drive gear 114 located at one end of the tooth wheel train is connected to the drive motor 116, and the third transmission gear 118 located at the other end is engaged with the first transmission gear 88 of the driven transmission portion 86. Here, the drive transmission unit 96 is configured such that the third transmission gear 118 always rotates counterclockwise in FIG. 11B regardless of the rotation direction of the drive motor 116.

  For this reason, when the drive transmission unit 96 and the driven transmission unit 86 are connected at the first position Y1, the first roller driving gear 94 and the second roller driving gear 90, that is, the first roller driving gear 90 are driven by the rotational driving force of the driving motor 116. The roller 50 and the second roller 52 are rotationally driven in the counterclockwise direction in FIG. 11B (the direction in which the paper P is fed along the transport path).

  Next, the second position Y2 will be described with reference to FIGS. 12 (A), 12 (B), and 13 (A). It should be noted that the driven transmission portion 86 is separated from the drive transmission portion 96 in the front-rear direction of the apparatus (the Y-axis direction in FIGS. 12B and 13A), the pulling side of the transport unit 66 with respect to the first position Y1. Is a second position Y2 (see FIG. 12B and FIG. 13A).

  12A, when the back cover 22 is opened with respect to the apparatus main body 12, the engaged state between the pressed portion 104 and the pressing portion 108 of the transport unit 66 is released. For this reason, the transport unit 66 is released from the restriction in the Y-axis direction with respect to the apparatus main body 12. Therefore, the transport unit 66 can be displaced in the + Y direction side with respect to the apparatus main body 12.

  Here, when the transport unit 66 grips the grip portion 100 and slides in the + Y direction, the transport unit 66 moves from the first position Y1 to the second position Y2 in the Y-axis direction as shown in FIG. 12B. Therefore, the engagement between the third transmission gear 118 of the drive transmission unit 96 and the first transmission gear 88 of the driven transmission unit 86 is released. For this reason, the driven transmission portion 86 is separated from the drive transmission portion 96 and the driving force of the driving motor 116 is not transmitted.

  For this reason, the 1st transmission gear 88, the 2nd roller drive gear 90, the 2nd transmission gear 92, and the 1st roller drive gear 94 which constitute driven driven part 86 will be in the state where free rotation is possible. Therefore, the first roller 50 and the second roller 52 rotated by the driven transmission unit 86 are also in a freely rotatable state.

  At this time, the protrusion 102 of the transport unit 66 engages with the inclined surface 110 provided on the support plate 98 when the transport unit 66 slides from the first position Y1 to the second position Y2. Therefore, when a pulling force of a predetermined size or less acts on the transport unit 66, the transport unit 66 is held at the second position Y2 in the Y-axis direction by the holding means 112 configured by the protrusion 102 and the inclined surface 110. Is done.

  Accordingly, the transport unit 66 has a first position Y1 where the driven transmission portion 86 is connected to the drive transmission portion 96 in a state where it is mounted on the apparatus main body 12, and the driven transmission portion 86 is separated from the drive transmission portion 96. The first position is configured to be displaceable from the second position Y2, which is the position on the pulling side of the transport unit 66.

  Further, when a pulling force of a predetermined size or more acts on the transport unit 66, the protrusion 102 moves over the inclined surface 110 along the + Z direction in FIG. The holding at the two position Y2 can be released. For this reason, as shown in FIG. 13B, the transport unit 66 moves from the mounting portion 106 of the apparatus main body 12 to the outside of the apparatus main body 12 and is detached from the apparatus main body 12.

  For this reason, when a pulling force of a predetermined level or more is applied to the transport unit 66, the transport unit 66 can be pulled out from the mounting portion 106. Therefore, the transport unit 66 in the second position Y2 is in a completely locked state. In comparison, the workability when pulling out the transport unit 66 is facilitated.

  Further, when the transport unit 66 is mounted on the apparatus main body 12, it is inserted into the mounting portion 106 from the + Y direction in FIG. Then, the back cover 22 is closed with respect to the apparatus main body 12 in a state where the transport unit 66 is located at the second position Y2 with respect to the apparatus main body 12. For this reason, the pressing portion 108 (see FIG. 9A) of the back cover 22 is engaged with the pressed portion 104 (see FIG. 8) of the transport unit 66 to press the pressed portion 104 in the −Y direction. The transport unit 66 is pushed into the first position Y1. As a result, the driven transmission portion 86 is connected to the drive transmission portion 96, and the driving force from the drive motor 116 is transmitted.

■■■ Paper jam handling method ■■■■■■■■■■■■■■■■■■■■■■■■
Next, referring to FIG. 11 (A), FIG. 11 (B), FIG. 12 (A), FIG. 12 (B), FIG. 13 (A), and FIG. Jam processing when a paper jam occurs in the path P will be described.

  In FIG. 11A, when the paper P causes a paper jam on the transport path, the rear cover 22 is first opened with respect to the apparatus main body 12. For this reason, the conveyance path from the medium accommodating unit 20 to the conveyance unit 66 is exposed, and the paper P in which the paper jam has occurred can be confirmed. For this reason, it is possible to easily remove the paper P causing the paper jam on the transport path from the medium accommodating unit 20 to the transport unit 66.

  Next, a paper jam occurs in the state of being nipped by the first roller 50, the second roller 52, the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58, and the back cover is attached to the apparatus main body 12. When it is opened, a part of the paper P jammed at the rear end side of the transport unit 66 is exposed. At this time, since the driven transmission portion 86 of the transport unit 66 is connected to the drive transmission portion 96, the force for pulling out the paper P nipped between the rollers holds the transport unit 66 at the first position Y1. Greater than the power to do. Therefore, when the sheet P exposed to the outside is pulled from the rear end side of the transport unit 66, the transport unit 66 can be moved from the first position Y1 to the second position Y2.

  For this reason, when the transport unit 66 is in the second position Y2, the driven transmission portion 86 of the transport unit 66 is separated from the drive transmission portion 96, so that no driving force is transmitted to the transport unit 66. As a result, since the first roller 50 and the second roller 52 provided in the transport unit 66 are in a freely rotatable state, the paper P in contact with the first roller 50 and the second roller 52 can be easily pulled out, Jam handling work can be easily performed.

  Further, even when there are a plurality of nip positions of the paper P, the connection between the driving transmission unit 96 and the driven transmission unit 86 is released, so that the driving force is not transmitted in the entire transport unit 66, that is, a plurality of the nip positions. Paper P at locations (between the first roller 50 and the third transport driven roller 58, between the second roller 52 and the second transport driven roller 56, and between the second roller 52 and the first transport driven roller 54). Each roller can freely rotate at the nip position. For this reason, in the configuration having the nip positions of the paper P at a plurality of places, the paper P can be easily removed while avoiding the complexity of the structure.

  Further, the first roller 50, the second roller 52, the first transport driven roller 54, the second transport driven roller 56, and the third transport driven roller 58 are nipped, and a part of the paper P is placed on the rear end side of the transport unit 66. By pulling out the paper P that has been ejected, the transport unit 66 moves to the second position Y2, so that it is not necessary for the user to move the transport unit 66 from the first position Y1 to the second position Y2. It becomes easy.

  Further, when the transport unit 66 is moved from the first position Y1 to the second position Y2, the printer 10 includes the protrusion 102 and the inclined surface 110 that are holding means 112 for holding the transport unit 66 at the second position Y2. It is possible to prevent the transport unit 66 from returning to the first position Y1 unintentionally during the jam handling operation for the paper P.

  In addition, since the printer 10 includes the holding unit 112 that holds the transport unit 66 at the second position Y2, the first roller 50 and the second roller 52 in a state where the transport unit 66 is held at the second position Y2. When the paper P nipped by the first transport driven roller 54, the second transport driven roller 56, and the third transport driven roller 58 is pulled out, the transport unit 66 is maintained in the second position Y2, while the paper P is maintained. Is pulled out between the first roller 50 and the third transport driven roller 58, between the second roller 52 and the second transport driven roller 56, and between the second roller 52 and the first transport driven roller 54.

  Further, since the holding force of the transport unit 66 at the second position Y2 is larger than the pulling force when the paper P is pulled out from the transport unit 66, when the paper P is pulled out from the transport unit 66, the holding force of the transport unit 66 is increased. Thus, the problem that the transport unit 66 is also pulled out from the apparatus main body 12 can be avoided.

<<< Modification of the first embodiment >>>
(1) In the present embodiment, the first roller 50 and the second roller 52 are provided one by one in the center in the width direction in the unit main body 82 of the transport unit 66 that is a direction intersecting the transport direction of the paper P. A plurality of at least one of the first roller 50 and the second roller 52 may be provided along the width direction of the unit body 82 which is the intersecting direction. In particular, in the configuration in which a plurality of second rollers 52 are provided in the width direction, the sheet P contacts the second roller 52 at a plurality of positions in the width direction of the sheet P, so that skew during conveyance of the sheet P can be suppressed.
(2) In the configuration in which a plurality of at least one of the first roller 50 and the second roller 52 are provided along the width direction of the unit main body 82 that is the intersecting direction, the first roller 50 and the second roller 52 are respectively contacted. A plurality of the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 that are in contact with each other may be provided in the width direction. With this configuration, it is possible to further prevent skewing during the conveyance of the paper P.
(3) In this embodiment, the projection 102 of the holding means 112 is provided on the conveyance unit 66 side and the inclined surface 110 is provided on the apparatus main body 12 side. However, the projection 102 is conveyed on the apparatus main body 12 side and the inclined surface 110 is conveyed. It is good also as a structure provided in the unit 66 side.
(4) In the present embodiment, the first roller 50 and the second roller 52 are configured to transport the paper P using the outer peripheral surface thereof, but are endless between the first roller 50 and the second roller 52. It is good also as a structure which winds a belt and conveys the paper P with the said endless belt driven with rotation of the 1st roller 50 and the 2nd roller 52. FIG.

■■■ Second Example ■■■■
14 and 15, there is shown a printer 120 according to a second embodiment of the present invention. The printer 120 is different from the first embodiment in that the first conveyance driven roller 54, the second conveyance driven roller 56, and the third conveyance driven roller 58 are provided not in the conveyance unit 122 but in the apparatus main body 124.

  As shown in FIGS. 14 and 15, the printer 120 is configured so that the transport unit 122 can be attached to and detached from the apparatus main body 124. The transport unit 122 is attached and detached by opening and closing the back cover 22 with respect to the apparatus main body 124. The transport unit 122 is provided with a first roller 50 and a second roller 52 as in the first embodiment. In the first roller 50 and the second roller 52, the transport unit 122 is mounted on the apparatus main body 124 as in the first embodiment, and the driven transmission section 86 of the transport unit 122 is connected to the drive transmission section 96 of the apparatus main body 124. When this is done, a driving force is supplied from the apparatus main body 124 and driven to rotate.

  When the transport unit 122 is mounted on the apparatus main body 124, the first transport driven roller 54, the second transport driven roller 56, and the third transport driven roller 58 are respectively connected to the apparatus main body 124. Are provided with a first conveyance driven roller 54, a second conveyance driven roller 56, and a third conveyance driven roller 58.

  A pressed portion 104 (see FIGS. 6 and 8) is provided on the rear end side of the transport unit 122. On the other hand, a pressing portion 108 (see FIGS. 9A and 9B) is provided on the side facing the apparatus main body 124 on the inner surface side of the back cover 22.

  In this embodiment, when the transport unit 122 is attached to the apparatus main body 124 and the back cover 22 is closed, the pressed portion 104 and the pressing portion 108 come into contact with each other, and the pressing portion 108 presses the pressed portion 104. Therefore, the transport unit 122 moves from the second position Y2 to the apparatus front side (the −Y direction side in FIGS. 14 and 15) with respect to the apparatus main body 124, and becomes the first position Y1. For this reason, the driven transmission part 86 is connected to the drive transmission part 96, and the paper P can be conveyed.

  Further, when the rear cover 22 is opened with respect to the apparatus main body 124 with the transport unit 122 mounted on the apparatus main body 124, the engaged state between the pressed portion 104 and the pressing portion 108 is canceled. Further, the apparatus main body 124 is provided with a biasing means (not shown) that biases the transport unit 66 in the + Y direction in FIG. 15 when the pressed portion 104 and the pressing portion 108 are in a disengaged state. For this reason, in this embodiment, when the back cover 22 is opened with respect to the apparatus main body 124, the transport unit 122 is displaced from the first position Y1 to the second position Y2 by the urging means (not shown).

  In this embodiment, the transport unit 122 is held at the first position Y1 by the back cover 22 when the back cover 22 is closed, and the transport unit 122 is moved to the first position Y1 by opening the back cover 22 in the closed state. To the second position.

  For this reason, since the transport unit 122 is displaced from the first position Y1 to the second position Y2, the user does not need to move the transport unit 122 itself from the first position Y1 to the second position Y2, thereby facilitating workability. .

<<< Modification of Second Embodiment >>>
(1) The first roller 50 and the second roller 52 are driven by a common drive motor 116. Instead of this configuration, the first roller 50 and the second roller 52 are rotated by independent drive motors. It is good also as a structure driven.
(2) The first roller 50 and the second roller 52 are configured to have the same diameter, but instead of this configuration, the first roller 50 and the second roller 52 are configured to have different diameters. May be.

(3) Although the two rollers of the first roller 50 and the second roller 52 are configured as drive rollers, two or more plural rollers may be configured as drive rollers instead of this configuration.
(4) In this embodiment, at least one of the first roller 50 and the second roller 52 may be provided along the intersecting direction, that is, the width direction of the transport unit 122. In addition, a plurality of first transport driven rollers 54, second transport driven rollers 56, and third transport driven rollers 58 may be provided in the width direction of the apparatus main body 124.

  In addition, in each of the above-described embodiments, the transport units 66 and 122 according to the present invention are applied to an ink jet printer as an example of a recording apparatus, but other liquid ejecting apparatuses can also be applied in general.

  Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copier, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device for ejecting a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to the recording medium, and attaching the liquid to the ejected medium.

  In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

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

10, 120 Printer, 12, 124 Device body, 14 Document reader,
16 operation panel section, 18 discharge port, 20 medium accommodating section, 22 back cover,
24 medium support tray, 26 transport section, 28 recording section, 30 discharge section,
32 Upper tray, 34 Lower tray, 36, 38 Pickup roller,
40, 42 oscillating shaft, 44, 46 oscillating member, 48 transport path section, 50 first roller,
52 second roller, 54 first transport driven roller, 56 second transport driven roller,
58 third transport driven roller, 60 fourth transport driven roller,
62 5th transport driven roller, 64 transport roller, 66, 122 transport unit,
68 carriage, 70 recording head, 72 platen, 74 discharge roller,
76 discharge stacker, 78 reversing path, 80 feeding path section, 82 unit body,
82a upper surface, 82b lower surface, 84 cover portion, 84a inner surface, 86 driven transmission portion,
88 1st transmission gear, 90 2nd roller drive gear, 92 2nd transmission gear,
94 1st roller drive gear, 96 drive transmission part, 98 support plate, 100 grip part,
102 projection, 104 pressed part, 106 mounting part, 108 pressing part, 110 inclined surface, 112 holding means, 114 drive gear, 116 drive motor, 118 third transmission gear, P paper, Y1 first position, Y2 second position

Claims (11)

An apparatus body including a recording head for recording on a medium;
An openable and closable opening / closing body provided in the apparatus body;
A unit body that is detachable from the mounting portion exposed by opening the opening / closing body in the apparatus main body, and that constitutes a medium transport path for transporting a medium in a state of being mounted on the mounting portion;
A medium support tray for supporting the medium before feeding,
The unit body includes both a reversing roller for reversing the medium fed from the recording head side using an outer peripheral surface, and a medium conveying path before and after reversing the outer peripheral surface by the reversing roller. A feed roller that faces the medium and imparts a conveying force to the medium,
The recording apparatus, wherein a supply path of a medium supplied via the medium support tray merges with a medium conveyance path formed by the reverse roller.   The recording apparatus according to claim 1, wherein a closed posture is defined by contacting the unit body with the opening / closing body in a closed state. The recording apparatus according to claim 1, wherein the medium support tray is provided on the opening / closing body,
By opening the opening / closing body, at least a part of a supply path of a medium supplied via the medium support tray is exposed. An apparatus body including a recording head for recording on a medium;
An openable and closable opening / closing body provided in the apparatus body;
A unit body that is detachable from the mounting portion exposed by opening the opening / closing body in the apparatus main body, and that constitutes a medium transport path for transporting a medium in a state of being mounted on the mounting portion;
A medium accommodating portion capable of accommodating a plurality of media,
The unit body includes both a reversing roller for reversing the medium fed from the recording head side using an outer peripheral surface, and a medium conveying path before and after reversing the outer peripheral surface by the reversing roller. A feed roller that faces the medium and imparts a conveying force to the medium,
The feeding path of the medium fed from the medium storage unit merges with the medium conveyance path formed by the reverse roller ,
The medium fed from the medium container is conveyed to the recording head via the reversing roller, the medium conveying path after reversing by the reversing roller, and the feeding roller, and the recording head is formed on the first surface of the medium. After the recording by the reverse roller operation, the medium is transported to the reverse roller through the medium transport path before reversal by the feed roller and the reverse roller, and again the medium transport path after reversal by the reverse roller, A recording apparatus, wherein the recording apparatus is transported to the recording head via a feed roller, and recording is performed on the second surface of the medium by the recording head. The recording apparatus according to claim 4 , wherein a merging portion between the feeding path and the medium conveyance path is removed together with the unit body by removing the unit body from the mounting portion. . The recording apparatus according to claim 4 or 5 , further comprising a first driven roller that nips the medium between the reversing roller and a feeding path of the medium fed from the medium container.
The recording apparatus, wherein the first driven roller is provided on the opening / closing body, and the first driven roller is separated from the reversing roller by opening the opening / closing body. The recording apparatus according to any one of claims 1 to 6, wherein the unit body, the apparatus main body, connected to the drive transmitting portion for transmitting a driving force, the inversion of the driving force of the drive transmission unit A recording apparatus comprising a driven transmission unit that transmits to a roller. An apparatus body including a recording head for recording on a medium;
An openable and closable opening / closing body provided in the apparatus body;
A unit body that is detachable from a mounting portion that is exposed by opening the opening and closing body in the apparatus main body, and that constitutes a medium transport path for transporting a medium in a state of being mounted on the mounting portion,
The unit body includes both a reversing roller for reversing the medium fed from the recording head side using an outer peripheral surface, and a medium conveying path before and after reversing the outer peripheral surface by the reversing roller. An openable / closable cover provided with a feed roller that imparts a conveying force to the medium facing the medium, and a driven roller that nips the medium between the reversing rollers,
The recording apparatus, wherein the driven roller is separated from the reversing roller by opening the cover. 9. The recording apparatus according to claim 8 , wherein the reversing roller and the feed roller are disposed on a rear side with respect to the arrangement area of the recording head in the apparatus front-rear direction, and the arrangement area of the recording head in the apparatus height direction. And a recording apparatus characterized by overlapping. An apparatus body including a recording head for recording on a medium;
An openable and closable opening / closing body provided in the apparatus body;
A unit body that is detachable from the mounting portion exposed by opening the opening / closing body in the apparatus main body, and that constitutes a medium transport path for transporting a medium in a state of being mounted on the mounting portion;
A medium support tray for supporting the medium before feeding,
The unit body includes both a reversing roller for reversing the medium fed from the recording head side using an outer peripheral surface, and a medium conveying path before and after reversing the outer peripheral surface by the reversing roller. A feed roller that faces the medium and imparts a conveying force to the medium,
The recording apparatus, wherein a supply path of a medium supplied via the medium support tray joins the inverted medium conveyance path. The recording apparatus according to any one of claims 1 to 10, wherein the unit body grip portion is provided, recording apparatus characterized.

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