JP6201512B2 - Recording device - Google Patents

Description

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

  Conventionally, a recording apparatus includes a carriage that can move in the scanning direction of the recording head, and a recording head that discharges ink toward a recording surface of a recording medium is provided on the lower surface of the carriage. In this recording apparatus, there is a recording medium that performs recording on an envelope, a cardboard, an optical disk or the like in addition to plain paper.

  Since the thicknesses of these recording media are different, the distance between the recording head and the recording surface of the recording medium changes. Therefore, the distance between the recording head and the supporting surface of the recording medium is changed according to the recording medium. There is a need. For this reason, some recording apparatuses adjust the distance by moving the carriage in the direction of adjusting the distance between the recording head and the support surface of the recording medium according to the type of the recording medium (Patent Document 1). ).

JP 2012-213986 A

  In this recording apparatus, a sliding portion that moves in the scanning direction together with the carriage is provided on the back side of the carriage, and the sliding portion directly slides in contact with the guide portion. Further, an interval control member is provided between the sliding portion and the carriage. The spacing control member is configured such that the thickness in the orthogonal direction changes along the scanning direction.

  In addition, a switching unit that is displaceable in a reciprocating manner within an area in which the interval control member slides is provided in the chassis of the recording apparatus. In the recording apparatus, the switching unit is brought into contact with the sliding interval control member, and the carriage is moved in the orthogonal direction by moving the interval control member relative to the carriage in the scanning direction. The interval with the recording medium was adjusted.

  By the way, in this recording apparatus, when the switching unit protrudes into the slide region in the region in which the interval control member slides, the carriage may be positioned in the slide region and prevent the switching unit from protruding. As an example, after a paper jam occurs in the recording apparatus and the user clears the paper jam, the recording apparatus is turned off, the carriage is moved to the slide area, and the jammed paper is removed. In some cases, the recording apparatus is powered on.

  In this case, when the power is turned on to the recording apparatus, the switching unit tries to protrude into the slide area in order to return the interval between the recording head and the support surface of the recording medium to the initial setting. At this time, since the carriage is positioned in the slide area, the switching portion is prevented from protruding. As a result, since the force that causes the switching unit to protrude into the slide region acts on the switching unit, an excessive force is applied to the switching unit, and the switching unit may be damaged. Even if the switching unit is not damaged, an error state may occur in the recording apparatus, and the job being worked on may be interrupted. As a result, the user is forced to perform an operation for resolving the error state and restarting the interrupted job, so that the convenience of the recording apparatus is lowered.

  The present invention has been made in view of the above problems, and provides a recording apparatus that can prevent parts from being damaged or an error from occurring due to an unexpected situation in the recording apparatus. Objective.

To achieve the above object, a recording apparatus according to a first aspect of the present invention includes a recording head that performs recording on a recording medium, the carriage being movable in the scanning direction of the recording head, and the engagement with the carriage. A first posture in which the engaging portion engages with the carriage and a second posture in which the engaging portion is separated from the carriage. And a pressing means for swinging the swinging member from the second posture toward the first posture by pressing a pressed portion formed on the swinging member. And the swinging shaft is displaceable when the pressing means presses the pressed part in a state where the swing of the engaging part is restricted.

According to this aspect, in the state where the swing of the engaging portion engageable with the carriage is restricted, when the pressing means presses the pressed portion of the swing member, the swing shaft is displaced. The swing member can be displaced so as to reduce a load received from the pressing means. Accordingly, since the load acting on the swing member is reduced, the possibility that the swing member is damaged can be reduced. Further, since the engaging portion can be retracted from the carriage movement area by displacing the swing shaft, it is possible to avoid the occurrence of an error in the recording apparatus.

  A recording apparatus according to a second aspect of the present invention is the recording apparatus according to the first aspect, wherein a medium support portion that supports the recording medium in a region where recording is performed by the recording head, and a engaged portion that engages with the engaging portion. Provided in the carriage, which has a joining portion, and that changes a distance between the medium support portion and the recording head by moving the carriage in a state where the engaging portion is engaged with the engaged portion. And an interval adjusting means.

  According to this aspect, since the engaging portion is engageable with the engaged portion of the interval adjusting means in the first posture, the swing member is swung from the second posture to the first posture. When moved, the interval adjusting means can change the interval between the recording head and the medium support portion. Further, when the swinging member is in the second posture, the movement of the carriage is not hindered, so that the engaging portion and the engaged portion are moved only when the interval adjustment of the interval adjusting means is necessary. The spacing can be adjusted by engaging.

  The recording apparatus according to a third aspect of the present invention is the recording apparatus according to the first or second aspect, wherein a holding member that holds the swing shaft so as to be displaceable, and a restriction surface that restricts a position of the swing shaft in the holding member. And a first urging means for urging the swing shaft toward the head.

  According to this aspect, since the holding member includes the first urging means for urging the oscillating shaft toward the regulating surface that regulates the position of the oscillating shaft, the first urging member is provided on the oscillating member. When a pressing force greater than the urging force of the urging means is applied, the oscillating shaft can be displaced so as to reduce the load acting on the oscillating member, and when the load ceases to act, the oscillation The shaft can be biased toward the restriction surface, and the position of the swing shaft can be restricted to the restriction surface.

  The recording apparatus according to a fourth aspect of the present invention is the recording apparatus according to the third aspect, wherein the holding member includes a bearing portion that is formed with the restricting surface and receives the swing shaft, and the swing shaft of the bearing portion. The holding length is longer than the amount of displacement of the rocking shaft when the pressing means presses the pressed portion.

  According to this aspect, the holding length of the oscillating shaft in the bearing portion that receives the oscillating shaft is set to be longer than the displacement amount of the oscillating shaft when the pressing means presses the pressed portion. Therefore, even if the rocking member is displaced by the pressing means, the rocking member does not fall off the holding member. Therefore, the holding member can reliably hold the swing member displaced by the pressing means.

  In the recording apparatus according to the fifth aspect of the present invention, in the third or fourth aspect, the swing member is provided with a swing restricting portion, and the swing restricting portion is engaged with the holding member. The swinging range of the swinging member is restricted.

  According to this aspect, since the swing range of the swing member is restricted by the swing restricting portion engaging with the holding member, the swing member does not exceed the swing range. When the swing member swings beyond the swing range, the urging means is prevented from falling off the swing member. Further, when the pressed portion is pressed by the pressing means and the swinging member swings, the position of the engaging portion can be positioned in the direction in which the interval changes. The engagement with can be ensured.

  A recording apparatus according to a sixth aspect of the present invention is the recording apparatus according to any one of the third to fifth aspects, further comprising: a second urging unit that urges the swing member from the first attitude to the second attitude. It is characterized by providing.

  According to this aspect, since the second urging means for urging the oscillating member from the first attitude to the second attitude is provided, the oscillating member oscillated to the first attitude is set to the second attitude. Can be swung. Thereby, the said engaging part can be reliably spaced apart from the said to-be-engaged part of the said space | interval adjustment means. Accordingly, since the swinging member assumes the first posture only when the pressing means presses the pressed portion, the engaging portion engages with the engaged portion only when the interval of the interval adjusting means is adjusted. In addition, since the engaged state between the engaging portion and the engaged portion is canceled except at the time of adjusting the distance, the swinging member can be prevented from obstructing the movement of the carriage.

FIG. 3 is a perspective view of the printer according to the present invention as viewed from the front side of the apparatus. FIG. 3 is a perspective view of the printer according to the present invention as viewed from the rear side of the apparatus. FIG. 2 is a perspective view showing the apparatus main body 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. 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. Expansive explanatory drawing of the rib in the rear-end side edge part in a conveyance unit. (A) is a sectional side view of the rib arranged near the first roller at the rear end side end portion in the transport unit, and (B) is a side sectional view of the rib disposed near the side portion of the transport unit. FIG. 3 is a perspective view illustrating a conveyance path from a conveyance unit to a recording unit in a paper conveyance path. (A) is a perspective view showing a paper presser in the paper transport path, and (B) is a plan view of the paper presser in the paper transport path. FIG. 3 is a schematic view of a carriage gap adjusting unit according to the present invention. (A) is a perspective view of the gap switching mechanism according to the present invention, (B) is a perspective view seen from the back side of the gap switching mechanism. (A) is a side view which shows the 2nd attitude | position of the rocking | swiveling member in a gap switching mechanism, (B) is a side view which shows the 1st attitude | position of the rocking | swiveling member in a gap switching mechanism. (A) is a sectional side view showing the second posture of the swing member in the gap switching mechanism, (B) is a side sectional view showing the first posture of the swing member in the gap switching mechanism. (A) is an enlarged view of the engaging part of the swing member in the second posture in the apparatus main body, (B) is an enlarged view of the engaging part of the swing member in the first posture in the apparatus main body. (A) is a side view showing the first posture of the swing member in the gap switching mechanism, (B) is a side view showing a state in which the swing shaft is displaced in the first posture of the swing member in the gap switching mechanism.

  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.

  FIG. 1 is a perspective view of the printer according to the present invention as viewed from the front side of the printer, FIG. 2 is a perspective view of the printer according to the present invention as viewed from the rear side, and FIG. 3 is a perspective view of the printer of the present invention. FIG. 4 is a side sectional view showing a 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. FIG. 6 is a perspective view of the transport unit according to the present invention.

  FIG. 7 is an enlarged explanatory view of a rib at a rear end side end portion in the transport unit, and FIG. 8A is a side sectional view of a rib arranged near the first roller at a rear end side end portion in the transport unit. 8B is a side sectional view of the rib arranged near the side of the transport unit, and FIG. 9 is a perspective view showing the transport path from the transport unit to the recording unit in the paper transport path. FIG. 10A is a perspective view showing the paper presser in the paper transport path, FIG. 10B is a plan view of the paper presser in the paper transport path, and FIG. 11 is a schematic diagram of the carriage gap adjusting means according to the present invention. FIG. 12A is a perspective view of the gap switching mechanism according to the present invention, and FIG. 12B is a perspective view of the gap switching mechanism as viewed from the back side.

  13A is a side view showing the second posture of the swing member in the gap switching mechanism, and FIG. 13B is a side view showing the first posture of the swing member in the gap switching mechanism. 14A is a side sectional view showing a second posture of the swing member in the gap switching mechanism, and FIG. 14B is a side sectional view showing the first posture of the swing member in the gap switching mechanism. 15 (A) is an enlarged view of the engaging portion of the swinging member in the second posture in the apparatus main body, and FIG. 15 (B) is an enlarged view of the engaging portion of the swinging member in the first posture in the main body. 16A is a side view showing a first posture of the swing member in the gap switching mechanism, and FIG. 16B shows a state in which the swing shaft is displaced in the first posture of the swing member in the gap switching mechanism. FIG.

  In the XYZ coordinate system shown in each figure, the X direction is the scanning direction of the recording head, the Y direction is the depth direction of the recording apparatus, and the Z direction is the distance (gap) between the recording head and the medium. The direction, that is, the device height direction is shown. 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.

■■■ About the printer overview ■■■■■■■
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. The back cover 22 includes a medium support tray 24 that is rotatably connected to the back cover 22 on the side opposite to the rotation shaft, that is, on the free end side.

  Referring to FIG. 3, a carriage 26 is provided in the apparatus main body 12 closer to the front side of the apparatus (the Y direction side in FIG. 1). The carriage 26 is configured to reciprocate in the X-axis direction (scanning direction) in FIG. Further, in the apparatus main body 12, a conveyance unit 28 configured to be detachable from the apparatus main body 12 is disposed behind the carriage 26 (on the apparatus rear side (FIG. 3 + Y direction side)). The transport unit 28 will be described in detail later.

  Next, with reference to FIGS. 4 and 5, the conveyance path of the paper P as the “recording medium” in the printer 10 will be described. The printer 10 includes a medium storage unit 20, a transport unit 30, a recording unit 32, and a discharge unit 34 in the apparatus main body 12.

  The medium storage unit 20 includes an upper tray 36 positioned on the upper side in the Z-axis direction, and a lower tray 38 positioned below the upper tray 36. The upper tray 36 and the lower tray 38 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. 4).

  Each of the upper tray 36 and the lower tray 38 contains a plurality of sheets P. In this embodiment, different types of paper are stored in the upper tray 36 and the lower tray 38, 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 40 and 42 that are rotationally driven by a driving source (not shown) are provided above the upper tray 36 and the lower tray 38, respectively. The pickup rollers 40 and 42 are configured to be swingable about swing shafts 44 and 46, respectively.

  When feeding the paper P stored in the upper tray 36 to the downstream side of the transport path based on a command input from the operation panel unit 16, the pickup roller 40 is positioned at the uppermost position of the paper P stored in the upper tray 36. The uppermost sheet P is sent out from the upper tray 36 to the downstream side of the transport path. Similarly, when feeding the paper P stored in the lower tray 38 to the downstream side of the transport path, the pickup roller 42 rotates in contact with the uppermost one of the paper P stored in the lower tray 38. The uppermost sheet P is sent out from the lower tray 38 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. Therefore, the feeding path portion 48 formed inside the back cover 22 guides the paper P sent out from the upper tray 36 and the lower tray 38 to the transport unit 30.

  The transport unit 30 includes a first roller 50, a second roller 52, a first transport driven roller 54, a second transport driven roller 56, a third transport driven roller 58, a fourth transport driven roller 60, a fifth transport driven roller 62, and A pair of transport rollers 64 is provided. The transport roller 64 includes a transport drive roller 66 and a transport driven roller 68.

  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 (FIG. 3). 4 to 6). The transport unit 28 will be described in detail later. In this embodiment, the first roller 50 and the second roller 52 are driven to rotate counterclockwise in FIGS. 4 and 5 by a drive motor (not shown).

  The paper P is fed by the fifth conveyance driven roller 62 and the third conveyance driven roller 58 that contact the first roller 50 along the conveyance path in the conveyance unit 30 and the second conveyance driven roller 56 and the first conveyance 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 32 is provided on the downstream side of the conveyance path of the conveyance roller 64 of the conveyance unit 30.

  The recording unit 32 is provided in the lower part of the carriage 26 that can move in the scanning direction (X-axis direction in FIG. 3), the recording head 70 that ejects ink onto the paper P, and the recording head 70. And a platen 72 as a “medium support portion” provided to support the paper P.

  Furthermore, a discharge unit 34 is provided on the downstream side of the conveyance path of the recording unit 32. The discharge section 34 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 30 to the recording unit 32 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.

  4 and 5, a solid line indicates a conveyance path 78 of the paper P that is conveyed from the medium storage unit 20 to the recording unit 32 via the conveyance unit 30. A broken line indicates a reverse path 80 of the paper P that is returned from the recording unit 32 to the conveyance unit 30 and conveyed to the recording unit 32 again.

  Next, the inversion path 80 will be described. When recording is performed on both sides of the paper P in the printer 10, the recording is performed on the first surface of the paper P by the recording unit 32, and then the paper P is moved backward by the transport roller 64 and the discharge roller 74. The reversing path located on the −Z direction side of the second roller 52 in the Z-axis direction (located below the transport unit 28), with the side that was the trailing edge of the sheet when recording is performed on one surface as the leading edge 80. The inversion path 80 is provided along the lower side of the first roller 50 and the second roller 52 (the −Z direction in FIG. 3), and is provided so as to join the transport path of the paper P from the medium storage unit 20. .

  For this reason, the sheet P is sent again from the reverse path 80 to the recording unit 32 via the transport path, the transport path 78 positioned above the first roller 50 and the second roller 52, and recording on the second surface is executed. The 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.

■■■ About the transport unit ■■■■■■■
Next, the transport unit 28 will be described with reference to FIGS. 6, 7, 8 </ b> A, and 8 </ b> B. The transport unit 28 is configured to be detachable from the apparatus main body 12. 4, when the back cover 22 is opened with respect to the apparatus main body 12, the transport unit 28 can be attached to and detached from the apparatus main body 12 on the back side of the apparatus main body 12 (+ Y-axis direction side in FIG. 4). it can.

  The transport unit 28 includes a unit main body 82 and a cover portion 84 that can be in an open state (not shown) or a closed state (see FIG. 6) with respect to the unit main body. By setting the cover portion 84 in an open state with respect to the unit main body 82, a part of a conveyance path described later is exposed. 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 plurality of gears and is configured as a common drive mechanism that drives the first roller 50 and the second roller 52.

  A driving force is supplied to the driven transmission portion 86 from a driving source (not shown) with the transport unit 28 attached to the apparatus main body 12. When a driving force from a driving source (not shown) is supplied to the driven transmission unit 86, the first roller 50 and the second roller 52 are rotationally driven in the counterclockwise direction in FIGS. Thereby, it is not necessary to provide a drive source in the transport unit 28, and an increase in the weight of the transport unit 28 can be suppressed.

  In the present embodiment, the first roller 50 and the second roller 52 are disposed in the center in the width direction of the unit main body 82 (X-axis direction in FIG. 6). The first roller 50 is disposed on the rear end side (+ Y direction side in FIG. 6) of the unit main body 82. 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 sheet P conveyed in the conveyance path formed between the unit main body 82 and the cover portion 84 can be kept horizontal. .

  Further, on the rear end side (+ Y direction side in FIG. 6) of the unit main body 82, a plurality of curved ribs 88 and 90 are provided at appropriate intervals in the X-axis direction in FIG. . The ribs 88 and 90 face the feeding path portion 48 formed on the inner side of the back cover 22 when the back cover 22 is closed with respect to the main body 12 when the transport unit 28 is attached to the main body 12. In addition, a part of the transport path from the medium storage unit 20 to the recording unit 32 is configured together with the feeding path unit 48.

  As shown in FIG. 7, the rib 88 is near the center in the width direction (X-axis direction in FIG. 6) of the unit body 82 on the rear end side (+ Y direction side in FIG. 6) of the unit body 82, that is, the first roller 50. Are arranged at appropriate intervals in the vicinity of. The ribs 90 are provided at appropriate intervals on the rear end side (+ Y direction side in FIG. 6) of the unit main body 82, outside the ribs 88, that is, near both ends in the X-axis direction in FIG.

  Here, in FIGS. 7, 8 </ b> A, and 8 </ b> B, when the position of the end of the first roller 50 on the Y-axis direction side is Y <b> 1, the end of the rib 88 is illustrated in FIGS. ) At the position Y2 in the Y-axis direction, and the end of the rib 90 is positioned at the position Y3 in the Y-axis direction in FIGS. 7 and 8B. The position Y2 of the rib 88 in the Y-axis direction is set to a position separated by a distance L1 from the position Y1 of the first roller 50 in the Y-axis direction. Further, the position Y3 of the rib 90 in the Y-axis direction is set to a position separated by a distance L2 from the position Y1 of the first roller 50 in the Y-axis direction. The distance L1 is set larger than the distance L2. In this embodiment, as an example, L1 is set to 1.5 mm, and L2 is set to 0.3 mm.

  For this reason, when the paper P comes into contact with the end portion located at the position Y1 on the Y-axis direction side of the first roller 50 in the transport path, the paper P has its central portion in the width direction (X-axis direction in FIG. 7). The first roller 50 is supported by the end portion located at the position Y1 in the Y-axis direction, and the both end portions in the width direction are supported by the end portions located at the position Y3 in the Y-axis direction of the rib 90. That is, the paper P is transported to the downstream side of the transport path in a state where the central portion is supported by the first roller and the both side portions are supported by the ribs 90.

  Further, as shown in FIG. 7, by reducing the distance L3 between the end portion of the rib 90 located at the position Y3 in the Y-axis direction and the end portion of the first roller 50 located at the position Y1 in the Y-axis direction. The gap between the end portion of the rib 90 located at the position Y3 in the Y-axis direction and the feeding path portion 48 becomes small.

  As a result, when the paper P is transported through a curved transport path (see FIGS. 4 and 5) located on the rear end side of the unit main body 82 of the transport unit 28, it corresponds to both sides in the width direction of the paper P. Since the gap in the transport path is small, it is possible to prevent the leading ends of both sides of the transported paper P from being displaced in the direction of the gap. Thereby, it is possible to suppress a difference in the sheet feeding amount due to the difference between the left and right displacement amounts of the sheet P generated by the displacement of the leading ends of both sides of the conveyed sheet P in the gap direction, and the position of the first roller 50. It is possible to suppress the rotation of the paper P around the end located at Y1 (see FIG. 7).

■■■ About the paper presser ■■■■■■■
Referring to FIG. 9, the conveyance unit 30 is shown. In the transport path 78 (see FIGS. 4 and 5), a plurality of paper pressers 92 are provided on the downstream side in the transport direction of the transport unit 28 in the X-axis direction in FIG. The paper presser 92 is provided with a swing shaft 94. The paper presser 92 is swingably attached to a frame (not shown) of the apparatus main body 12 via a swing shaft 94. A conveyance driven roller 68 is rotatably provided at an end portion 92 a on the free end side of the paper presser 92.

  The paper retainer 92 includes a plurality of torsion springs 96. The torsion spring 96 biases the paper presser 92 so that the transport driven roller 68 contacts the transport drive roller 66 by the biasing force. Therefore, when the paper P is transported through the transport path 78, the paper P can be nipped between the transport driving roller 66 and the transport driven roller 68. Further, the end of the paper presser 92 opposite to the free end is configured as a cam engaging portion 92b.

  Further, a cam 100 is provided on the drive shaft 98 extending in the X-axis direction in FIG. As the drive shaft 98 rotates, the cam 100 presses the cam engaging portion 92 b of the paper presser 92. As a result, the end 92 a on the free end side of the paper presser 92 is displaced so that the transport driven roller 68 is separated from the transport driving roller 66. Therefore, since the conveyance driven roller 68 is separated from the conveyance driving roller 66, the nip state of the paper P that is nipped between the conveyance driving roller 66 and the conveyance driven roller 68 can be released.

  Further, as shown in FIG. 10B, in this embodiment, the position where the swing shaft 94 is provided in the X-axis direction is the same as the position where the cam 100 of the drive shaft 98 contacts the cam engaging portion 92b. It is on a straight line (see the alternate long and short dash line in FIG. 10B). With this configuration, a pressing force acts near the support point in the paper presser 92. Therefore, the Z-axis direction of the paper presser 92 in FIG. 10A is compared with a configuration in which the pressing force acts at a position away from the support point. The amount of deflection can be reduced. That is, the deformation of the paper presser 92 in the Z-axis direction in FIG. 10A can be suppressed.

  Further, since the deformation of the paper presser 92 can be reduced, it is possible to secure the amount of displacement of the paper presser 92 with respect to the transport drive roller 66 when the transport driven roller 68 is separated from the transport drive roller 66 (release state). Therefore, when the paper presser 92 is separated from the transport driving roller 66, it is possible to prevent the displacement amount of the paper presser 92 from being insufficient and the nip state of the paper P from being solved.

■■■ First Example ■■■■■■■
■■■ Gap switching mechanism ■■■■■■■
Next, the switching mechanism 110 of the interval adjusting means 102 that adjusts the interval between the recording head 70 of the carriage 26 and the platen 72 (hereinafter referred to as gap PG) will be described with reference to FIGS. .

  Referring to FIG. 11, the carriage 26 includes a distance adjusting unit 102. In this embodiment, the interval adjusting means 102 includes a slider member 104 as an “engaged portion” and a cam member 106. The slider member 104 slides on the guide rail 108 provided in the apparatus main body 12 as the carriage 26 moves. Furthermore, the slider member 104 includes an engaging portion 104a that engages with the cam member.

  Further, the cam member 106 includes a cam 106 a formed in a step shape on the side facing the slider member 104. When the slider member 104 and the cam member 106 are relatively moved, the engaging portion 104 a of the slider member 104 is sequentially engaged with the stepped cam 106 a of the cam member 106. Accordingly, the height of the cam member 106 with respect to the guide rail 108 in the Z-axis direction in FIG. 11 changes. As a result, the height of the carriage 26 with respect to the guide rail 108 in the Z-axis direction in FIG. 11 is displaced, and as a result, the gap PG between the recording head 70 and the platen 72 changes.

  The switching mechanism 110 will be described with reference to FIGS. 12 (A) to 16 (B). In this embodiment, the switching mechanism 110 is releasably engaged with the slider member 104, and relatively moves the slider member 104 and the cam member 106 when the carriage 26 moves in the X-axis direction in FIG. In this embodiment, the switching mechanism 110 is provided at the end on the + X-axis direction side in the movement region of the carriage 26 in FIG.

  The switching mechanism 110 includes a swing member 112 and a holding member 114 as shown in FIGS. 12 (A) and 12 (B). As shown in FIGS. 13A and 13B, the swing member 112 includes a swing shaft 116, an engaging portion 118, and a pressed portion 120. The swing shaft 116 is configured as a pair of pins protruding in the X-axis direction in the swing member 112 as shown in FIG.

  Further, as shown in FIGS. 13A and 13B, the engaging portion 118 is arranged at a distance from the swing shaft 116 in the swing member 112, and the swing member 112 extends from the tip of the swing member 112. Projecting in the rocking direction (clockwise direction in FIG. 13A). The pressed portion 120 is disposed on the opposite side of the engaging portion 118 via the swing shaft 116 in the swing member 112. Further, the urging member contact portion 122 (see FIGS. 13A and 13B) and the swing regulating portion 124 (FIG. 14) are located on the same side of the swing member 112 as the side on which the pressed portion 120 is disposed. (See FIG. 14A and FIG. 14B).

  As shown in FIGS. 14A and 14B, the holding member 114 includes a bearing portion 126, a first urging member holding portion 128, a second urging member holding portion 130, and a swing restricting portion holding. Part 132. The bearing 126 is configured as a groove that receives the swing shaft 116 of the swing member 112 from the outside of the holding member 114 and extends in the Z-axis direction in FIGS. 14 (A) and 14 (B).

  Furthermore, the bearing portion 126 includes a regulating surface 134 that regulates the position of the swing shaft 116 at the end portion on the + Z-axis direction side in FIGS. 14A and 14B. Further, the length of the bearing 126 in the Z-axis direction in FIGS. 14A and 14B is set to be longer than the displacement in the Z-axis direction of the swing shaft 116 described later.

  The switching mechanism 110 includes a first urging member 136 as “first urging means” and a second urging member 138 as “second urging means”. The first urging member 136 has one end connected to the first urging member holding portion 128 of the holding member 114 and the other end connected to the swing shaft 116 of the swing member 112. In addition, the 1st biasing member 136 is comprised as a coil spring in a present Example.

  The second urging member 138 has one end connected to the second urging member holding part 130 of the holding member 114 and the other end connected to the urging member abutting part 122 of the swinging member 112. In addition, the 2nd biasing member 138 is comprised as a torsion spring in a present Example.

■■■ Operation of the switching mechanism ■■■■■■■
Next, the operation of the switching mechanism 110 will be described with reference to FIGS. 13 (A) and 13 (B). In the switching mechanism 110, the swing member 112 can take a first posture in which the engaging portion 118 is engaged with the carriage 26 and a second posture in which the engaging portion 118 is separated from the carriage 26.

  The swing member 112 is engaged with the holding member 114 in a state in which the swing member 112 is biased to the restriction surface 134 of the bearing portion 126 of the holding member 114 by the biasing force of the first biasing member 136 connected to the swing shaft 116. ing. The drive shaft 98 is provided with a cam 140 as “pressing means”. A pressing portion 142 is formed on the cam 140.

  As shown in FIG. 13A, when the pressing portion 142 of the cam 140 is not engaged with the pressed portion 120 of the swinging member 112, the swinging member 112 is a view of the second biasing member 138. 13 (A) receives a counterclockwise urging force. At this time, as shown in FIG. 15A, the engaging portion 118 of the swinging member 112 is not protruding from the opening 108a provided in the guide rail 108 on which the carriage 26 moves.

  In this state, since the engaging portion 118 is located on the −Z direction side in the Z-axis direction in FIG. 15A with respect to the guide rail 108, the engaging portion 118 is not engaged with the carriage 26, that is, is separated from the carriage 26. It has become. This state is referred to as a second posture in the swing member 112.

  Next, when the drive shaft 98 rotates counterclockwise in FIG. 13B, the cam 140 also rotates counterclockwise, and the pressing portion 142 engages with the pressed portion 120 of the swinging member 112, The pressing part 120 is pressed. As a result, the swing member 112 swings in the clockwise direction in FIG. 13B with the swing shaft 116 as the swing center against the biasing force of the second biasing member 138.

  Accordingly, as shown in FIG. 15B, the engaging portion 118 of the swinging member 112 protrudes from the opening 108a provided in the guide rail 108. This state is referred to as a first posture in the swing member 112. In this state, when the carriage 26 moves on the guide rail 108, the engaging portion 118 engages with the slider member 104 of the interval adjusting means 102. Thus, the gap PG between the recording head 70 and the platen 72 can be changed by relatively moving the slider member 104 and the cam member 106.

  That is, since the engaging portion 118 can engage with the slider member 104 of the interval adjusting unit 102 in the first posture, the interval adjusting unit 102 is moved when the swinging member 112 is swung from the second posture to the first posture. The gap PG between the recording head 70 and the platen 72 can be changed. Further, when the swinging member 112 is in the second posture, it does not hinder the movement of the carriage 26 in the X-axis direction in FIG. 3, so that it engages only when the gap PG of the interval adjusting means 102 needs to be adjusted. The gap PG can be adjusted by engaging the portion 118 and the slider member 104.

  Further, when the swinging member 112 is in the first posture, when the drive shaft 98 is rotated in the clockwise direction in FIG. 13A, the cam 140 is also rotated in the clockwise direction, so that the pressing portion 142 and the swinging member 112 are rotated. 13 is disengaged from the pressed portion 120, and the swinging member 112 receives the biasing force of the second biasing member 138 on the biasing member abutting portion 122, and the swinging shaft 116 is moved around the swinging shaft 116. ) In the clockwise direction to change from the first posture to the second posture.

  14A and 14B, when the swing member 112 is in the second posture, the swing restricting portion 124 provided in the swing member 112 is provided in the holding member 114. It is in a state of being separated from the rocking restricting portion holding portion 132. When the swing member 112 is displaced from the second posture to the first posture, the swing restricting portion 124 approaches the swing restricting portion holding portion 132. Further, when the swing member 112 is swung from the first posture in the counterclockwise direction in FIG. 14B, the swing restriction portion 124 and the swing restriction portion holding portion 132 are engaged, and the swing member 112 is swung. The swing of the member 112 is restricted.

  Accordingly, the swinging member 112 is restricted from swinging in the counterclockwise direction in FIG. 14B from the first posture, so that the first biasing member 136 and the second biasing member 138 are biased members. The possibility of falling off from the contact portion 122 can be reduced or suppressed.

  Next, referring to FIGS. 16A and 16B, when the swinging member 112 is in the first posture, the swinging member 112 is placed on the −Z axis in FIGS. 16A and 16B. The operation of the switching mechanism 110 when a load in the direction is applied will be described.

In FIG. 16A, when the swinging member 112 is in the first posture, the swinging shaft 116 is biased by the first biasing member 136 and comes into contact with the regulating surface 134 of the bearing portion 126 of the holding member 114. Is in a state. In this state, as shown in FIG. 13B, the pressed portion 120 of the swinging member 112 is engaged with the pressing portion 142 of the cam 140 and pressed by the pressing portion 142. Accordingly, the swinging of the total circumference direction, ie, the first position when that put in FIG. 16 (A) of the swing member 112 to the second position is restricted.

Further, the swing member 112, since where the pivotal range limiting portion 124 and the pivotal range limiting portion holding part 132 as shown in FIG. 14 (B) is engaged, counterclockwise in FIG. 16 from the first posture (A) Oscillation in the circumferential direction is restricted. Therefore, when the swinging member 112 is in the first posture, the swinging in the clockwise direction and the counterclockwise direction in FIG. 16A is restricted.

  As shown in FIG. 16B, when the swinging member 112 is in a state where swinging in the clockwise direction and the counterclockwise direction is restricted in the first posture, the engaging portion 118 or the swinging member 112 is engaged. When a pressing force (load) in the −Z-axis direction in FIG. 16B is applied to at least a part of the rocking member, the swinging member 112 maintains the first posture in the −Z-axis direction in FIG. Displace.

  Specifically, when a pressing force (load) in the −Z-axis direction is applied to the swing member 112, the swing shaft 116 resists the biasing force of the first biasing member 136 and restricts the swing shaft 116. The engagement with the surface 134 is released, and the swing shaft 116 is displaced to the −Z direction side along the bearing portion 126 extending in the Z axis direction. Note that the length of the bearing portion 126 in FIG. 16B in the Z-axis direction is set longer than the amount of displacement of the swing shaft 116 in the −Z direction, so that the swing member 112 is held by the holding member 114. Can be prevented from falling off.

  As a result, when a pressing force (load) in the −Z-axis direction acts on the swing member 112 in a state where the swing of the swing member 112 is restricted, the swing member 112 is displaced toward the −Z direction side, The pressing force (load) acting on the swing member 112 can be reduced. Therefore, the possibility that the swinging member 112 is damaged can be reduced or suppressed.

  15A, the carriage 26 moves onto the opening 108a of the guide rail 108 when the engagement portion 118 is in the second posture. Thereafter, when the pressing portion 142 of the cam 140 presses the pressed portion 120 of the swinging member 112 and the engaging portion 118 changes from the second posture to the first posture, the engaging portion 118 becomes a carriage on the opening 108a. 26 abuts. At this time, the engaging portion 118 is prevented from swinging from the second posture to the first posture by the carriage 26.

  When the pressing force from the pressing portion 142 to the pressed portion 120 becomes larger than the urging force of the first urging member 136, the swing shaft 116 moves in the bearing portion 126 in the −Z axis direction in FIG. The pressing force that is displaced and acts on the swing member 112 is reduced or suppressed. As a result, the swinging member 112 is also displaced in the −Z-axis direction, so that the engaging portion 118 is retracted from the moving area of the carriage 26 and the movement of the carriage 26 is not hindered, so that an error in the printer 10 is avoided. be able to.

  That is, when the displacement of the engaging portion 118 that can be engaged with the carriage 26 is restricted, when the cam 140 presses the pressed portion 120 of the swing member 112, the swing shaft 116 is displaced. The member 112 can be displaced to reduce the load it receives from the cam 140. Therefore, since the load acting on the swing member 112 is reduced, the possibility that the swing member 112 is damaged can be reduced. In addition, since the engaging portion 118 can be retracted from the moving region of the carriage 26 by displacing the swing shaft 116, it is possible to avoid an error in the printer 10.

  Further, since the first urging member 136 that urges the oscillating shaft 116 toward the regulating surface 134 that regulates the position of the oscillating shaft 116 in the holding member 114 is provided, the first urging member 136 is provided on the oscillating member 112. When a pressing force equal to or greater than the urging force is applied, the swing shaft 116 can be displaced so as to reduce the load acting on the swing member 112, and when the load stops working, the swing shaft 116 is moved. The position of the swing shaft 116 can be regulated by the regulating surface 134 by urging the regulating surface 134.

  In addition, since the holding length of the swing shaft 116 in the bearing portion 126 that receives the swing shaft 116 is set to be longer than the displacement amount of the swing shaft 116 when the cam 140 presses the pressed portion 120. Even if the swing member 112 is displaced by the cam 140, the swing member 112 does not fall off the holding member 114. Therefore, the holding member 114 can reliably hold the swinging member 112 that is displaced by the cam 140.

  In addition, since the swinging range of the swinging member 112 is restricted when the swinging restricting unit 124 engages with the swinging restricting unit holding unit 132, the swinging member 112 does not exceed the swinging range, and the swinging member 112 does not exceed the swinging range. When the moving member 112 swings beyond the swing range, the first biasing member 136 and the second biasing member 138 are prevented from falling off the swinging member 112. Further, when the pressed portion 120 is pressed by the cam 140 and the swinging member 112 swings, the position of the engaging portion 118 can be positioned in the direction in which the gap PG changes. The match can be ensured.

  Further, since the second biasing member 138 that biases the swinging member 112 from the first posture to the second posture is provided, the swinging member 112 swinging to the first posture is swung to the second posture. Can do. Thereby, the engaging portion 118 can be reliably separated from the slider member 104 of the interval adjusting means 102. Therefore, since the swinging member 112 assumes the first posture only when the cam 140 presses the pressed portion 120, the engaging portion 118 engages with the slider member 104 only when the gap PG of the interval adjusting means 102 is adjusted, Since the engagement state between the engagement portion 118 and the slider member 104 is canceled except when the gap PG is adjusted, it is possible to prevent the swinging member 112 from obstructing the movement of the carriage 26.

<<< Modification >>>
(1) In this embodiment, the engaging portion 118 of the swinging member 112 and the slider member 104 of the interval adjusting means 102 are engaged with each other, but instead of this configuration, the engaging portion 118 and the cam member 106 are engaged. It is good also as a structure which engages.
(2) In the present embodiment, the paper presser 92 and the switching mechanism 110 are driven by the common drive shaft 98. However, instead of this configuration, the paper presser 92 and the switching mechanism 110 may be driven independently. Good.

  In summary, the printer 10 according to the present embodiment includes the recording head 70 that records on the paper P, the carriage 26 that is movable in the scanning direction of the recording head 70, and the engagement that can be engaged with the carriage 26. A first posture in which the engaging portion 118 is engaged with the carriage 26 and a second posture in which the engaging portion 118 is separated from the carriage 26 by having the joint portion 118 and swinging about the swing shaft 116. And a cam 140 that swings the swinging member 112 from the second posture toward the first posture by pressing the pressed portion 120 formed on the swinging member 112. . When the cam 140 presses the pressed portion 120 in a state where the displacement of the engaging portion 118 is restricted, the swing shaft 116 can be displaced.

  In a region where recording is performed by the recording head 70, the platen 72 that supports the paper P and the slider member 104 or the cam member 106 that engages with the engaging portion 118 are included, and the engaging portion 118 is the slider member 104 or cam member 106. And an interval adjusting means 102 provided in the carriage 26 for changing the gap PG between the platen 72 and the recording head 70 by moving the carriage 26 in the engaged state.

  A holding member 114 that holds the swinging shaft 116 so as to be displaceable, and a first biasing member 136 that biases the swinging shaft 116 toward a restriction surface 134 that restricts the position of the swinging shaft 116 in the holding member 114; Is provided.

  The holding member 114 includes a bearing portion 126 that is formed with a regulating surface 134 and that receives the swing shaft 116. The holding length of the swing shaft 116 of the bearing portion 126 is such that the cam 140 presses the pressed portion 120. This is longer than the displacement amount of the swinging shaft 116 associated therewith.

  The swing member 112 is provided with a swing restricting portion 124, and the swing restricting portion 124 is engaged with the swing restricting portion holding portion 132, thereby restricting the swing range of the swing member 112. A second biasing member 138 that biases the swing member 112 from the first posture to the second posture is provided.

In this embodiment, the switching mechanism 110 according to the present invention is applied to an ink jet printer as an example of a recording apparatus. However, the switching mechanism 110 can be applied to other liquid ejecting apparatuses 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.

DESCRIPTION OF SYMBOLS 10 Printer, 12 Apparatus main body, 14 Original reading apparatus, 16 Operation panel part,
18 discharge port, 20 medium accommodating portion, 22 back cover, 24 medium support tray,
26 Carriage, 28 Transport unit, 30 Transport section, 32 Recording section, 34 Ejection section,
36 Upper tray, 38 Lower tray, 40, 42 Pickup roller,
44, 46 Oscillating shaft, 48 Feed path section, 50 First roller, 52 Second roller,
54 1st conveyance driven roller, 56 2nd conveyance driven roller,
58 third transport driven roller, 60 fourth transport driven roller,
62 fifth transport driven roller, 64 transport roller, 66 transport drive roller,
68 transport driven roller, 70 recording head, 72 platen, 74 discharge roller,
76 discharge stacker, 78 transport path, 80 reverse path, 82 unit body,
84 Cover part, 86 Driven transmission part, 88, 90 Rib, 92 Paper presser,
92a end, 92b cam engaging portion, 94, 116 swing shaft, 96 spring, 98 drive shaft,
100 cam, 102 interval adjusting means, 104 slider member,
104a, 118 engaging portion, 106 cam member, 106a, 140 cam,
108 guide rail, 108a opening, 110 switching mechanism, 112 swing member,
114 holding member, 120 pressed portion, 122 biasing member contact portion, 124 swing regulating portion,
126 bearing portions, 128 first biasing member holding portion, 130 second biasing member holding portion,
132 rocking restricting portion holding portion, 134 restricting surface, 136 first urging member,
138 Second urging member, 142 pressing portion, L1, L2, L3 distance, P paper,
PG gap

Claims (6)

A carriage having a recording head for recording on a recording medium and movable in the scanning direction of the recording head;
A first posture in which the engaging portion engages with the carriage by having the engaging portion engageable with the carriage and swinging about a swing shaft, and the engaging portion from the carriage A swinging member capable of taking a second posture to be separated;
Pressing means for swinging the swing member from the second posture toward the first posture by pressing a pressed portion formed on the swing member;
The swing shaft is displaceable when the pressing means presses the pressed portion in a state where swing of the engaging portion is restricted.
A recording apparatus. The recording apparatus according to claim 1, wherein a medium support unit that supports the recording medium in a region where recording is performed by the recording head;
An engaged portion that engages with the engaging portion, and the carriage moves in a state in which the engaging portion engages with the engaged portion, whereby the medium support portion and the recording head An interval adjusting means provided in the carriage for changing the interval, and
A recording apparatus. The recording apparatus according to claim 1 or 2, wherein a holding member that holds the swing shaft in a displaceable manner;
First urging means for urging the oscillating shaft toward a regulating surface that regulates the position of the oscillating shaft in the holding member;
A recording apparatus. The recording apparatus according to claim 3, wherein the holding member includes a bearing portion that is formed with the restriction surface and that receives the swing shaft,
The rocking shaft holding length of the bearing portion is longer than the displacement amount of the rocking shaft caused by the pressing means pressing the pressed portion.
A recording apparatus. The recording apparatus according to claim 3 or 4, wherein the swing member is provided with a swing restricting portion,
The swing range of the swing member is restricted by the swing restricting portion engaging with the holding member.
A recording apparatus. 6. The recording apparatus according to claim 3, further comprising a second urging unit that urges the swinging member from the first attitude to the second attitude.
A recording apparatus.

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