JP2018167332A - Cutting mechanism - Google Patents

Abstract

To provide a cutting mechanism which can cut a medium accurately.SOLUTION: A cutting mechanism includes a cutter blade 51 which can cut a medium, a cutter unit 70 on which the cutter blade is mounted, and a rack gear 64 which supports the cutter unit. When the cutter unit moves in an advancing direction along a guide rail, the cutter blade cuts the medium. The cutter unit includes a second pinion gear 92 and a fourth roller 84 which are in contact with the guide rail so as to be held by the guide rail. The second pinion gear and the fourth roller are arranged so as to interpose the cutter blade in the advancing direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a cutting mechanism provided in a recording apparatus such as a printer.

  As an example of the recording apparatus, there is a printer including a cutting mechanism that cuts a medium on which an image such as a character and a photograph is recorded into a desired size. Patent Document 1 describes a cutting device that cuts roll paper by moving a cutter unit having a rotary blade along a guide rail as an example of a cutting mechanism.

JP, 2006-55379, A

  In the cutting device described in Patent Document 1, for example, depending on how the cutter unit and the guide rail are attached, the cutter unit may rattle when the cutter unit moves along the guide rail. If the cutter unit rattles, there is a possibility that the medium cannot be cut accurately.

  An object of the present invention is to provide a cutting mechanism capable of cutting a medium with high accuracy.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A cutting mechanism that solves the above problem includes a cutter blade capable of cutting a medium, a cutter unit to which the cutter blade is attached, and a guide rail that supports the cutter unit, and the cutter unit follows the guide rail. The cutter blade is configured to cut the medium by moving in the advancing direction, and the cutter unit is in contact with the guide rail to be held by the guide rail. The first holding part and the second holding part are arranged so as to sandwich the cutter blade in the traveling direction.

  When the cutter unit moves in the traveling direction and cuts the medium, a moment is generated in the cutter unit that rotates the cutter unit with the cutting position of the medium by the cutter blade as a fulcrum. According to the said structure, since the 1st holding | maintenance part and the 2nd holding | maintenance part are arrange | positioned on both sides of a cutter blade, the shakiness of the cutter unit by trying to rotate using a cutting position as a fulcrum can be reduced. Therefore, the medium can be cut with high accuracy.

In the cutting mechanism, it is preferable that the first holding part and the second holding part are arranged so as to sandwich the guide rail.
According to this structure, since the 1st holding | maintenance part and the 2nd holding | maintenance part are arrange | positioned so that a guide rail may be pinched | interposed, shakiness of a cutter unit can be reduced.

  In the cutting mechanism, the first holding portion is disposed rearward of the cutter blade in the traveling direction, and a distance between the first holding portion and the cutter blade in the traveling direction is the first distance in the traveling direction. It is preferable that it is comprised so that it may become larger than the distance of 2 holding | maintenance parts and the said cutter blade.

  According to this structure, since the 1st holding | maintenance part is arrange | positioned rather than the 2nd holding | maintenance part with respect to the cutter blade in the advancing direction, the shakiness of a cutter unit can be reduced more.

  In the cutting mechanism, the guide rail is configured by a rack gear, the cutter unit has a drive gear arranged to mesh with the rack gear, and the drive gear moves the cutter unit in the traveling direction. At this time, it is preferable that the cutter blade is rotated by meshing with the rack gear, and the cutter blade is configured to rotate by rotating the drive gear when the cutter unit moves in the moving direction.

According to this configuration, the medium can be easily cut by rotating the cutter blade.
In the cutting mechanism, it is preferable that the first holding portion is constituted by a pinion gear that can mesh with the rack gear.

  According to this structure, since the pinion gear which is a 1st holding part meshes with a rack gear, the shakiness of a cutter unit can be reduced compared with the case where a 1st holding part is a roller, for example.

The side view which shows typically the internal structure of one Embodiment of a recording device provided with a cutting | disconnection mechanism. The perspective view of a cutting mechanism. The front view of a cutting mechanism. The side view of a cutting mechanism. Sectional drawing of a cutting mechanism.

Hereinafter, an embodiment of a recording apparatus including a cutting mechanism will be described with reference to the drawings.
As shown in FIG. 1, the recording apparatus 11 has a rectangular parallelepiped housing 12. The recording device 11 includes a recording unit 20 that records images such as characters and photographs on the medium S, and a first support member 31 and a second support member 32 that support the medium S in the housing 12. The recording apparatus 11 includes a transport unit 40 that transports the medium S and a cutting mechanism 50 that cuts the medium S recorded by the recording unit 20 in the housing 12. That is, the recording unit 20, the first and second support members 31 and 32, the transport unit 40, and the cutting mechanism 50 are accommodated in the housing 12.

  In the housing 12, for example, a roll body R in which a medium S that is paper is wound in a roll shape is arranged. The roll body R is disposed behind the housing 12 on the right side in FIG. The roll body R is rotatably supported by a shaft 13 provided so as to extend in the width direction X of the medium S. In the present embodiment, the medium S is unwound from the roll body R when the shaft 13 rotates counterclockwise in FIG. The unrolled medium S is transported by the transport unit 40 and discharged from the housing 12 to the outside of the housing 12 through the discharge port 15 opened in the front surface 14 of the housing 12. That is, in the present embodiment, the direction from the rear to the front of the housing 12 and the direction from the right to the left in FIG. 2 is the transport direction Y of the medium S transported by the transport unit 40. The front surface 14 of the housing 12 is a surface having a spread in the vertical direction Z and the width direction X.

  The recording unit 20 includes a head 21 that ejects a liquid such as ink toward the medium S, and a carriage 22 on which the head 21 is mounted. The carriage 22 is supported by a frame 16 provided in the housing 12 and a guide shaft 17 attached to the frame 16. The guide shaft 17 extends in the width direction X of the medium S. The carriage 22 is movable along the guide shaft 17. That is, the carriage 22 is movable in the width direction X. The head 21 can eject liquid onto the medium S over the entire region in the width direction X by moving the carriage 22 along the guide shaft 17.

  The 1st, 2nd support members 31 and 32 are comprised by the plate-shaped member. The first support member 31 is disposed upstream of the second support member 32 in the transport direction Y, and guides the medium S unwound from the roll body R toward the recording unit 20. The second support member 32 is disposed so as to face the head 21 of the recording unit 20.

  The transport unit 40 transports the medium S unwound from the roll body R from the inside of the housing 12 toward the discharge port 15 along the first and second support members 31 and 32. The transport unit 40 includes a first transport roller pair 41, a second transport roller pair 42, a third transport roller pair 43, and a fourth transport roller pair 44 in order from the upstream side to the downstream side in the transport direction Y. ing. The first transport roller pair 41 is disposed upstream of the head 21 in the transport direction Y, and is disposed at a position between the first support member 31 and the second support member 32. The second, third, and fourth transport roller pairs 42, 43, and 44 are disposed on the downstream side of the head 21 in the transport direction Y.

  The first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 can be driven and rotated by a driving roller 45 that can be driven and rotated by a motor (not shown) and the rotation of the driving roller 45. And a driven roller 46. The first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 transport the medium S by rotating in a state where the medium S is sandwiched between the driving roller 45 and the driven roller 46. The driving roller 45 is disposed so as to contact the medium S from below. The driven roller 46 is disposed so as to contact the medium S from above. That is, when the medium S is transported, the driven roller 46 in the second, third, and fourth transport roller pairs 42, 43, 44 contacts the surface on which the liquid is ejected. Therefore, the driven roller 46 in the second, third, and fourth transport roller pairs 42, 43, and 44 is a star having a small contact area with respect to the medium S in order to reduce deterioration of the quality of the image recorded on the medium S. It is composed of wheels. A plurality of first, second, third, and fourth transport roller pairs 41, 42, 43, and 44 are arranged in the width direction X at predetermined intervals.

  The cutting mechanism 50 is disposed between the third conveyance roller pair 43 and the fourth conveyance roller pair 44 in the conveyance direction Y. The medium S cut by the cutting mechanism 50 is discharged from the discharge port 15 by being transported by the fourth transport roller pair 44. Note that the recording apparatus 11 in the present embodiment is configured such that the interval in the vertical direction Z at the opening of the discharge port 15 is relatively small so that the user cannot insert a hand into the housing 12 from the discharge port 15. Yes.

  The recording apparatus 11 in the present embodiment is normally used in a state where it is installed on a floor surface that extends horizontally. The casing 12 of the recording apparatus 11 is provided so as to have a rectangular parallelepiped shape such that the front surface 14 intersects with the floor surface and ideally orthogonally. At this time, considering a Cartesian coordinate system composed of three axes of the X axis, the Y axis, and the Z axis, the floor surface on which the recording apparatus 11 is installed is a plane composed of the X axis and the Y axis, and the front surface 14 of the housing 12 is defined as X The coordinate system is taken to be a plane composed of an axis and a Z axis. Then, the width direction X coincides with the direction in which the X axis extends, the transport direction Y coincides with the direction in which the Y axis extends, and the vertical direction Z coincides with the direction in which the Z axis extends. The X axis extending in the width direction X, the Y axis extending in the transport direction Y, and the Z axis extending in the vertical direction Z are in a mutually orthogonal relationship. That is, in the present embodiment, the width direction X, the transport direction Y, and the vertical direction Z indicate three different directions.

Next, the cutting mechanism 50 will be described.
As shown in FIG. 2, the cutting mechanism 50 includes a cutter blade 51 for cutting the medium S, a cutter unit 70 to which the cutter blade 51 is attached, and a guide frame 60 that supports the cutter unit 70. . The guide frame 60 extends in the width direction X so as to be longer than the roll body R on which the recording apparatus 11 can be loaded. That is, the longitudinal direction of the guide frame 60 coincides with the width direction X. The cutter unit 70 can reciprocate along the guide frame 60. The cutting mechanism 50 cuts the medium S by the cutter blade 51 as the cutter unit 70 moves along the guide frame 60. For convenience of explanation, in the width direction X, the left side in FIG. 2 is the + X side, and the right side, which is the opposite side, is the −X side. In the present embodiment, as shown in FIG. 2, the end portion on the + X side in the width direction X of the guide frame 60 is the home position HP of the cutter unit 70.

  The guide frame 60 is configured by bending a sheet metal. The guide frame 60 is formed to have a claw shape when viewed from the width direction X. The guide frame 60 includes a bottom wall 61, a front wall 62 and a rear wall 63 that are bent and extended upward from the bottom wall 61. The front wall 62 is located on the downstream side of the rear wall 63 in the transport direction Y, and extends from the bottom wall 61 so that its length is shorter than that of the rear wall 63 in the vertical direction Z.

  The guide frame 60 has a rack gear 64 extending in the width direction X. The rack gear 64 is attached to a surface on the downstream side in the transport direction Y on the rear wall 63 of the guide frame 60. The rack gear 64 is disposed along the upper edge of the rear wall 63, and is provided so that the length in the width direction X is slightly shorter than the guide frame 60. The rack gear 64 has teeth 65 extending in the width direction X at a lower portion thereof. The rack gear 64 has a groove 66 for guiding the movement of the cutter unit 70 in the width direction X in the upper portion thereof.

  As shown in FIGS. 2 and 3, the cutter unit 70 includes a holding body 71 that holds the cutter blade 51 and a moving body 72 that is held by the guide frame 60. 2 and 3 is located at the home position HP. The holding body 71 and the moving body 72 are fixed to each other so that they can be handled integrally. The holding body 71 and the moving body 72 are fixed so as to partially overlap each other when viewed from the transport direction Y. Specifically, the holding body 71 and the moving body 72 are arranged so that the lower part of the holding body 71 and the upper part of the moving body 72 overlap in the vertical direction Z.

  The holding body 71 is attached to a surface of the moving body 72 that is on the downstream side in the transport direction Y. The holding body 71 has a medium passage 73 extending in the width direction X at a position above the moving body 72 in the vertical direction Z. The medium passage 73 is a passage through which the medium S passes through the holding body 71 when the cutter unit 70 moves in the width direction X along the guide frame 60. A portion of the medium passage 73 that is on the −X side in the width direction X is an introduction port 74 for introducing the medium S into the medium passage 73. In order to facilitate introduction of the medium S into the medium passage 73, the introduction port 74 is configured such that the opening in the vertical direction Z gradually increases in the width direction X from the + X side to the −X side.

  The holding body 71 holds the cutter blade 51 at a position in the middle of the medium passage 73. That is, the medium passage 73 guides the medium S toward the cutter blade 51 when the cutter unit 70 moves in the width direction X. The cutter blade 51 is disposed on the + X side with respect to the introduction port 74 in the width direction X, and is positioned adjacent to the introduction port 74. The cutter blade 51 includes a disk-shaped drive blade 52 and a driven blade 53. The driving blade 52 and the driven blade 53 are rotatably attached to the holding body 71. The driving blade 52 and the driven blade 53 are provided so as to be aligned in the vertical direction Z, and are disposed so as to sandwich the medium passage 73. The driving blade 52 is positioned below the driven blade 53 in the vertical direction Z, and is positioned downstream of the driven blade 53 in the transport direction Y.

  When viewed from the conveyance direction Y, the cutter blade 51 is held by the holding body 71 such that the blade tip that is the upper portion of the drive blade 52 and the blade tip that is the lower portion of the driven blade 53 overlap each other. The cutting edge of the driving blade 52 and the cutting edge of the driven blade 53 are in contact with each other at a cutting position Q that is a position closer to the −X side in the width direction X in the portion where the cutting edges overlap each other. The drive blade 52 in the present embodiment is held by the holding body 71 in a posture in which the rotation axis is inclined by a predetermined angle with respect to the driven blade 53 extending in the transport direction Y. The cutter blade 51 cuts the medium S at the cutting position Q where the cutting edges of the driving blade 52 and the driven blade 53 come into contact with each other as the driving blade 52 and the driven blade 53 rotate. That is, when the cutter unit 70 moves from the + X side to the −X side in the width direction X, the cutting mechanism 50 sandwiches the medium S passing through the medium passage 73 with the rotating driving blade 52 and the driven blade 53. Cut by. In the present embodiment, the direction from the + X side to the −X side in the width direction X is a traveling direction in which the cutter unit 70 advances when the cutter blade 51 cuts the medium S. That is, in the cutter unit 70, the + X side in the width direction X is the rear side in the traveling direction, and the −X side in the width direction X is the front side in the traveling direction. The cutting mechanism 50 in the present embodiment cuts the medium S by moving from the + X side to the −X side in the width direction X, and then moves from the −X side to the + X side to the home position HP. Return.

  The holding body 71 has a lever 75 for connecting the carriage 22 of the recording unit 20 and the cutter unit 70 at the upper part thereof. The lever 75 is engageable with an engaging portion (not shown) provided on the carriage 22, for example, a claw extending from the carriage 22. That is, the cutter unit 70 can be moved in the width direction X as the carriage 22 moves by being connected to the carriage 22 via the lever 75. The lever 75 is configured to be switchable between an engaged state that engages with the engaging portion and a released state that does not engage with the engaging portion by an actuator, a motor, or the like. In the present embodiment, for example, when the recording unit 20 records on the medium S, the lever 75 is released, and when the cutting mechanism 50 cuts the medium S, the lever 75 is engaged. When the lever 75 is released, the cutter unit 70 does not move as the carriage 22 moves, and when the lever 75 is engaged, the cutter unit 70 moves as the carriage 22 moves.

  As shown in FIGS. 3 and 4, the moving body 72 has a first roller 81, a second roller 82, and a third roller 83 arranged so as to sandwich the front wall 62 of the guide frame 60 at the lower part thereof. ing. The first and second rollers 81 and 82 are arranged on the front wall 62 so that the peripheral surfaces thereof are in contact with the surface on the downstream side in the transport direction Y. The third roller 83 is disposed on the front wall 62 so that the circumferential surface thereof is in contact with the surface on the upstream side in the transport direction Y. The 1st roller 81 is located in the edge part which becomes the + X side of the width direction X in the mobile body 72, and the 2nd roller 82 is located in the edge part which becomes the -X side. The third roller 83 is located between the first roller 81 and the second roller 82 in the width direction X. The first, second, and third rollers 81, 82, and 83 rotate by friction with the front wall 62 when the rotation axis extends in the vertical direction Z and the moving body 72 moves in the width direction X. That is, the first, second, and third rollers 81, 82, and 83 guide the movement of the cutter unit 70 along the front wall 62.

  As shown in FIGS. 4 and 5, the moving body 72 has a fourth roller 84 and a fifth roller 85 arranged so that a part of the moving body 72 fits in a groove 66 of the rack gear 64. The peripheral surfaces of the fourth and fifth rollers 84 and 85 are arranged so as to contact the bottom surface 67 of the groove 66. The fourth roller 84 is located at the end portion on the −X side in the width direction X of the moving body 72, and the fifth roller 85 is located at the end portion on the + X side in the width direction X. That is, the fourth roller 84 is positioned forward of the cutter blade 51 and the fifth roller 85 is positioned rearward of the cutter blade 51 in the traveling direction of the cutter unit 70. The cutter unit 70 in the present embodiment is configured such that in the traveling direction, the distance between the fifth roller 85 and the cutter blade 51 is larger than the distance between the fourth roller 84 and the cutter blade 51 in the traveling direction. .

  The fourth roller 84 is located above the second roller 82, and the fifth roller 85 is located above the first roller 81. The fourth and fifth rollers 84 and 85 rotate by friction with the bottom surface 67 of the groove 66 when the rotating shaft extends in the transport direction Y and the moving body 72 moves in the width direction X. That is, the fourth and fifth rollers 84 and 85 guide the movement of the cutter unit 70 along the groove 66 of the rack gear 64. In other words, the cutter unit 70 moves along the rack gear 64. In summary, the first, second, third, fourth, and fifth rollers 81, 82, 83, 84, and 85 guide the movement of the cutter unit 70 along the guide frame 60.

  The moving body 72 has a first pinion gear 91 and a second pinion gear 92 that can mesh with the teeth 65 of the rack gear 64. That is, the cutter unit 70 has a plurality of pinion gears. The first and second pinion gears 91 and 92 are rotatably attached to the moving body 72. The first and second pinion gears 91 and 92 have teeth 93 and 94 on their peripheral surfaces, and are arranged with a gap in the width direction X. The first pinion gear 91 is disposed on the −X side of the second pinion gear 92 in the width direction X. The first pinion gear 91 is located directly below the cutter blade 51. The second pinion gear 92 is located behind the cutter blade 51 in the traveling direction of the cutter unit 70. In the present embodiment, the second pinion gear 92 is arranged such that the distance between the second pinion gear 92 and the cutter blade 51 is greater than the distance between the fourth roller 84 and the cutter blade 51 in the traveling direction of the cutter unit 70. Has been. The first and second pinion gears 91 and 92 rotate while meshing with the rack gear 64 when the cutter unit 70 moves along the guide frame 60.

  As shown in FIG. 5, the cutter unit 70 is attached to the rack gear 64 by the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92 sandwiching the rack gear 64 in the vertical direction Z. . That is, in the present embodiment, the rack gear 64 functions as a guide rail that supports the cutter unit 70. In the present embodiment, the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92 function as a holding portion that contacts the rack gear 64 so that the cutter unit 70 is held by the rack gear 64. It can be said that the cutter unit 70 is held by the rack gear 64 via the fourth and fifth rollers 84 and 85 and the first and second pinion gears 91 and 92.

  The cutter unit 70 has a transmission gear (not shown) that transmits the rotation of the first pinion gear 91 to the drive blade 52. That is, the cutter unit 70 is configured such that the drive blade 52 rotates with the rotation of the first pinion gear 91 when moving in the width direction X along the guide frame 60. In the present embodiment, the first pinion gear 91 functions as a drive gear that rotates the drive blade 52. In FIG. 3 of the present embodiment, when the cutter unit 70 moves from the + X side in the width direction X toward the −X side, that is, when moving in the traveling direction, the drive blade 52 rotates in the counterclockwise direction. It is configured. The driven blade 53 rotates following the rotation of the drive blade 52 when the blade edge contacts the blade edge of the drive blade 52.

Next, the operation of the cutting mechanism 50 provided in the recording apparatus 11 configured as described above will be described.
As shown in FIG. 5, when the cutting mechanism 50 cuts the medium S, the cutter unit 70 moves in the direction from the + X side in the width direction X toward the −X side as the carriage 22 connected by the lever 75 moves. That is, it moves in the traveling direction. The cutter unit 70 cuts the medium S by the cutter blade 51 by moving in the traveling direction along the rack gear 64. At this time, a force from the + X side to the −X side in the width direction X is applied to the cutter unit 70 from the carriage 22 of the recording unit 20 to the lever 75 positioned above the holding body 71. Therefore, when the medium S is cut, a moment may be generated around the fulcrum of the cutter unit 70 with the lever 75 as a power point and the cutting position Q where the cutter blade 51 and the medium S are in contact with each other. When a moment is generated around the cutting position Q, the cutter unit 70 tries to rotate around the cutting position Q in the traveling direction. As a result, the cutter unit 70 may rattle with respect to the rack gear 64. In this regard, the cutting mechanism 50 in the present embodiment includes a first holding part and a second holding part for reducing the rattling of the cutter unit 70.

  When the cutter unit 70 moves in the traveling direction in order to cut the medium S, the cutter unit 70 tries to rotate counterclockwise in FIG. 5 with the cutting position Q as a fulcrum. That is, the cutter unit 70 tends to rotate so that the rear portion in the traveling direction moves upward, so that the front portion in the traveling direction moves downward. At this time, the second pinion gear 92 is strongly pressed against the rack gear 64 from below, and the fourth roller 84 is strongly pressed against the rack gear 64 from above. That is, the second pinion gear 92 and the fourth roller 84 hold the cutter unit 70 on the rack gear 64 so that the rotation of the cutter unit 70 is suppressed. Therefore, in this embodiment, the 2nd pinion gear 92 functions as a 1st holding | maintenance part, and the 4th roller 84 functions as a 2nd holding | maintenance part. In summary, rattling of the cutter unit 70 is reduced by the first holding part and the second holding part that are arranged so as to sandwich the cutter blade 51 in the traveling direction.

According to the above embodiment, the following effects can be obtained.
(1) When the cutter unit 70 moves in the traveling direction and cuts the medium S, a moment is generated in the cutter unit 70 to rotate the cutter unit 70 with the cutting position Q of the medium S by the cutter blade 51 as a fulcrum. In this regard, in the cutting mechanism 50, a second pinion gear (first holding portion) 92 and a fourth roller (second holding portion) 84 are arranged with the cutter blade 51 interposed therebetween. Therefore, shakiness of the cutter unit 70 due to rotation about the cutting position Q can be reduced. Therefore, the medium S can be cut with high accuracy.

  (2) Since the second pinion gear (first holding portion) 92 and the fourth roller (second holding portion) 84 are arranged so as to sandwich the rack gear (guide rail) 64, rattling of the cutter unit 70 can be reduced. .

  (3) In the traveling direction of the cutter unit 70, the second pinion gear (first holding portion) 92 is disposed away from the cutter blade 51 than the fourth roller (second holding portion) 84. . Therefore, rattling of the cutter unit 70 can be further reduced. That is, the cutting mechanism 50 effectively reduces the rotation of the cutter unit 70 with the cutting position Q as a fulcrum by increasing the distance between the cutting position Q and the fourth roller (second holding portion) 84 in the traveling direction. To do.

  (4) The cutter blade 51 is configured to rotate when the first pinion gear (drive gear) 91 rotates when the cutter unit 70 moves in the traveling direction. Therefore, the medium S can be easily cut by rotating the cutter blade 51.

  (5) Since the 1st pinion gear 91 which is a 1st holding part meshes with the rack gear 64, the rattling of the cutter unit 70 can be reduced compared with the case where a 1st holding part is a roller, for example.

  (6) The first holding portion is provided as a pinion gear (second pinion gear 92). Further, a plurality of pinion gears including the first pinion gear 91 and the second pinion gear 92 are meshed with the rack gear 64. Thereby, when the cutter unit 70 moves along the rack gear 64, it is possible to reduce the possibility that the first pinion gear 91 skips teeth with respect to the rack gear 64. By reducing the tooth skipping of the first pinion gear 91, the cutter blade 51 rotates at a constant cycle, so that the medium S can be cut with high accuracy.

  (7) The cutting mechanism 50 includes a first pinion gear 91 and a fifth roller 85. Therefore, even if the cutter unit 70 rotates in the clockwise direction in FIG. 5 with the cutting position Q as a fulcrum, the rattling can be reduced.

In addition, you may change the said embodiment as follows. Further, the following modifications may be combined as appropriate.
-A 1st holding | maintenance part may be a roller, for example. In this case, the rack gear 64 preferably has grooves instead of the teeth 65.

The guide rail is not limited to the rack gear 64 but may be a simple rail. In this case, the first pinion gear 91 and the second pinion gear 92 are preferably rollers.
The cutter blade 51 is not limited to a rotating configuration and may be a fixed blade. In this case, the first pinion gear 91 may not transmit the driving force for rotation to the cutter blade 51. That is, the drive gear may not be provided.

  The drive blade 52 may be configured to be rotated by a motor or the like. In this case, the first pinion gear 91 may not transmit the driving force for rotation to the cutter blade 51. That is, the drive gear may not be provided.

  In the transport direction Y, the distance between the second pinion gear 92 that functions as the first holding unit and the cutter blade 51 may be the same as the distance between the fourth roller 84 that functions as the second holding unit and the cutter blade 51, It may be small.

-The 5th roller 85 does not need to be provided.
The cutter unit 70 may be configured to move separately by a drive source such as a motor. Even in such a case, there is a considerable possibility that the cutter unit 70 will rattle.

  The recording device 11 is a fluid other than ink (including a liquid, a liquid obtained by dispersing or mixing functional material particles in a liquid, a fluid such as a gel, and a solid that can be ejected as a fluid) It may be a fluid ejecting apparatus that performs recording by ejecting or ejecting ink. For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. A liquid ejecting apparatus may be used. Also, a fluid injection device for injecting a fluid such as a gel (eg, physical gel), a powder injection device (eg, a toner jet type) for injecting a solid such as powder (particles) such as toner Recording device). The present invention can be applied to any one of these fluid ejecting apparatuses. In this specification, “fluid” means, for example, liquid (including inorganic solvent, organic solvent, solution, liquid resin, liquid metal (metal melt), etc.), liquid, fluid, powder (grain) Body and powder).

  DESCRIPTION OF SYMBOLS 50 ... Cutting mechanism, 51 ... Cutter blade, 52 ... Drive blade, 53 ... Driven blade, 60 ... Guide frame, 61 ... Bottom wall, 62 ... Front wall, 64 ... Rack gear (guide rail), 65 ... Tooth, 66 ... Groove , 67 ... bottom surface, 70 ... cutter unit, 71 ... holding body, 73 ... medium passage, 74 ... introduction port, 75 ... lever, 81 ... first roller, 82 ... second roller, 83 ... third roller, 84 ... first 4 rollers (second holding part), 85 ... fifth roller, 91 ... first pinion gear (driving gear), 92 ... second pinion gear (first holding part), 93 ... teeth, 94 ... teeth, HP ... home position, Q: cutting position, S: medium, X: width direction, Y: transport direction, Z: vertical direction.

Claims (5)

A cutter blade capable of cutting the medium;
A cutter unit to which the cutter blade is attached;
A guide rail that supports the cutter unit,
The cutter unit is configured so that the cutter blade cuts the medium by moving in the traveling direction along the guide rail,
The cutter unit has a first holding part and a second holding part that come into contact with the guide rail to be held by the guide rail,
The cutting mechanism, wherein the first holding part and the second holding part are arranged so as to sandwich the cutter blade in the traveling direction.   The cutting mechanism according to claim 1, wherein the first holding part and the second holding part are arranged so as to sandwich the guide rail. The first holding part is arranged behind the cutter blade in the traveling direction,
The distance between the first holding portion and the cutter blade in the traveling direction is configured to be larger than the distance between the second holding portion and the cutter blade in the traveling direction. The cutting mechanism according to claim 1 or 2. The guide rail is composed of a rack gear,
The cutter unit has a drive gear arranged to mesh with the rack gear,
The drive gear rotates by meshing with the rack gear when the cutter unit moves in the traveling direction,
The said cutter blade is comprised so that it may rotate by the said drive gear rotating, when the said cutter unit moves to the said advancing direction, The one of Claims 1 thru | or 3 characterized by the above-mentioned. The cutting mechanism according to one item.   The cutting mechanism according to claim 4, wherein the first holding portion is configured by a pinion gear that can mesh with the rack gear.