JP2009107768A - Medium transport apparatus and recording apparatus - Google Patents

Abstract

A suction platen 250 for conveying a recording paper 150.
An endless belt 254 having a belt side suction hole 253 and a support portion 252 having a support portion side suction hole 251 communicating with a pressure reducing source and supporting the endless belt 254 are provided. A suction platen 250 that generates a suction force when the support portion side suction hole 251 overlaps and conveys the recording paper 150 to the surface of the endless belt 254, and the support portion side suction hole 251 has a lattice shape. The belt-side suction hole 253 has a maximum length in the transport direction that is greater than the closest distance between the outer peripheries of the two support portion-side suction holes 251 adjacent in the transport direction and is disposed adjacent to the transport direction. Between the two belt side suction holes 253, at least one belt side suction hole 253 adjacent in the direction orthogonal to the transport direction is arranged.
[Selection] Figure 5

Description

  The present invention relates to a transported medium transport apparatus and a recording apparatus. More specifically, the present invention relates to a transported medium transport apparatus that transports a sheet-shaped transported medium while sucking it, and a recording apparatus including the transported medium transport apparatus.

  There is a transported medium transport apparatus that transports a sheet-shaped transported medium such as paper, a resin film, and a textile product. In this type of apparatus, a medium to be transported is placed on a belt stretched between a pair of rolls, and is moved as the belt travels.

  Furthermore, the transported medium may be attracted to the belt for the purpose of preventing the transported medium from moving on the belt or causing wrinkles or slack in the transported medium. Accordingly, the transport amount can be reliably controlled, and since no sliding occurs between the transported medium and the belt, it is possible to prevent the surface of the transported medium from being scratched.

  As a method of attracting the transported medium to the belt, there is a method of electrostatically attracting the belt by charging, and a method of attracting the belt by forming a suction hole communicating with a negative pressure. As a result, it can be conveyed by being adsorbed to the belt without selecting the surface property and electrical property of the medium to be conveyed.

In Patent Document 1 below, a conveyor belt that travels with a through-hole penetrating the front and back, a suction device that has a plurality of openings that communicate with negative pressure, a conveyor belt that has an aperture that penetrates the front and back, and A recording material transport device is described that includes an open / close belt disposed between suction devices. In this recording material conveying apparatus, in a region where the opening of the suction device and the opening of the open / close belt coincide, the recording material is sucked onto the surface of the conveying belt and moves together with the conveying belt. Further, Patent Document 2 below describes a recording medium transport mechanism including a suction roller having a number of suction holes.
JP 07-281495 A JP 2001-335183 A

  However, in the transported medium transport device that transports the transported medium by being attracted to the belt, the support portion side suction hole that supports the belt while being connected to the negative pressure is fixed, whereas the front and back surfaces of the belt are penetrated. Since the suction hole formed in this manner moves continuously with the belt, the suction force on the surface of the belt varies. For this reason, the suction force varies depending on the area of the transported medium, and the transported medium may be deformed.

  Therefore, in order to solve the above problems, as a first embodiment of the present invention, an endless belt having a plurality of belt side suction holes penetrating the front and back sides and a plurality of support part side suction holes communicating with a decompression source are provided. A support portion that supports and guides part of the driven endless belt, and generates a suction force when the belt side suction hole and the support portion side suction hole substantially overlap each other, thereby generating a surface of the endless belt. A transported medium transport device that sucks the transported medium supported by the transport medium and transports the transported medium in a predetermined direction, wherein the plurality of support unit side suction holes are formed on the support unit in the transport direction and the transport direction. The belt-side suction hole has a maximum length in the transport direction that is greater than the closest distance between the outer peripheries of the two support part-side suction holes adjacent to each other in the transport direction. Two belt side suctions arranged adjacent to each other Between, adjacent the belt side suction holes the direction perpendicular to the conveying direction the conveyed medium transport apparatus is provided which is characterized in that at least one disposed. Thus, when the transported medium is sucked and transported, a uniform suction force is continuously maintained in the entire region where the endless belt is in contact with the transported medium.

  Further, as a second embodiment of the present invention, an endless belt having a plurality of belt side suction holes penetrating the front and back, and a plurality of support portion side suction holes communicating with a decompression source, A support medium that supports and guides a part of the medium, and a transported medium that is supported on the surface of the endless belt by generating a suction force when the belt side suction hole and the support part side suction hole substantially overlap each other The plurality of belt-side suction holes are arranged in a lattice shape in the transport direction of the transported medium and in a direction perpendicular to the transport direction. The maximum length in the transport direction in the support portion side suction hole is formed larger than the closest distance between the outer circumferences of the two belt side suction holes adjacent to each other in the transport direction, and is disposed adjacent to the transport direction. Directly in the transport direction between the two support side suction holes The conveyed medium transport apparatus is provided that the supporting portion side suction hole adjacent the direction in which is characterized in that the at least one provided. Even in this case, when the transported medium is sucked and transported, a uniform suction force is continuously maintained in the entire region where the endless belt is in contact with the transported medium.

  In the transported medium transporting device, at least one of the belt-side suction holes and the support part-side suction holes is arranged at a constant suction hole interval in the transport direction and in a direction orthogonal to the transport direction. None, a plurality of assemblies may be arranged at a larger assembly interval than the suction hole interval. Thereby, a uniform suction force can be generated using a small number of belt side suction holes and support part side suction holes.

  Furthermore, as a third aspect of the present invention, a recording head that ejects ink while reciprocating and a plurality of belt-side suction holes penetrating the front and back surfaces, the reciprocating direction at a position facing the recording head. An endless belt that travels in a conveying direction that intersects the belt, and a support portion that has a plurality of support portion side suction holes that communicate with a pressure reducing source and supports and guides a part of the driven endless belt. Recording in which a suction force is generated when the side suction hole and the support portion side suction hole substantially overlap each other to suck the transported medium supported on the surface of the endless belt and transport the transported medium in a predetermined direction. The plurality of support part side suction holes are arranged in a lattice shape on the support part in the transport direction and in a direction orthogonal to the transport direction, and the maximum length of the belt side suction holes in the transport direction is mutually Two support side suctions adjacent to the transport direction At least one belt-side suction hole adjacent to the direction perpendicular to the transport direction is disposed between two belt-side suction holes that are formed to be larger than the nearest distance of the outer periphery of the belt and disposed adjacent to the transport direction. A recording apparatus is provided. Thereby, the above-described effect can be enjoyed in the recording apparatus.

  Furthermore, as a fourth embodiment of the present invention, a recording head that ejects ink while reciprocating and a plurality of belt-side suction holes penetrating the front and back are provided, and the reciprocating movement is performed at a position facing the recording head. An endless belt that travels in a conveying direction that intersects the direction, and a support portion that has a plurality of support portion side suction holes that communicate with a decompression source and supports and guides a part of the driven endless belt, When the belt side suction hole and the support part side suction hole substantially overlap each other, a suction force is generated to suck the transport medium supported on the surface of the endless belt and transport the transport medium in a predetermined direction. In the recording apparatus, the plurality of belt side suction holes are arranged in a lattice shape in the transport direction of the transported medium and in a direction orthogonal to the transport direction, and the maximum length in the transport direction of the support unit side suction holes is Two belts adjacent to each other in the transport direction Between the two support part side suction holes formed larger than the nearest distance of the outer periphery of the suction hole and arranged adjacent to the transport direction, there is at least a support part side suction hole adjacent in the direction orthogonal to the transport direction. There is provided a recording apparatus characterized in that one recording device is provided. Thereby, the recording apparatus can enjoy the above-described effects.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. Further, a sub-combination of these feature groups can be an invention.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is a perspective view showing an appearance of an ink jet recording apparatus 100 according to an embodiment. The ink jet recording apparatus 100 performs recording by ejecting ink onto a large single sheet such as a JIS standard A0 size or a JIS standard B0 size, or roll paper having the same paper width as the single sheet. In addition to paper, a resin film or the like can be used as the recording medium.

  As shown in the figure, the ink jet recording apparatus 100 includes a casing 110 including an upper casing 112 and a lower casing 114 that are stacked on each other, and a small casing 116 that is suspended below the lower casing 114. Have The housing 110 is lifted and supported by the legs 120 from below. As a result, a space for discharging the recorded recording paper 150 is formed below the housing 110.

  The upper casing 112 is provided with an operation panel 130 that is used when the ink jet recording apparatus 100 is operated in a stand-alone manner. The operation panel 130 may be provided with a display panel, a display lamp, and the like that indicate the operation state of the ink jet recording apparatus 100. On the other hand, the lower housing 114 is provided with a cartridge holder 140 into which an ink cartridge 240 containing ink is loaded.

  In the ink jet recording apparatus 100, the recording sheet 150 on which an image is recorded is sent forward from between the upper casing 112 and the lower casing 114. The fed recording sheet 150 hangs downward due to its own weight. Therefore, a smooth guide surface 115 that smoothly guides the recording paper 150 is formed at the front end of the suction platen 250 that can be seen in the gap between the upper housing 112 and the lower housing 114.

  FIG. 2 is a perspective view showing the ink jet recording apparatus 100 as seen from the back. As shown in the figure, on the rear surface of the ink jet recording apparatus 100, a spindle 160 that is horizontally stretched and a roll 152 that is horizontally supported by being inserted through the spindle 160 are disposed at the rear of the lower housing 114. Installed. The roll 152 is formed by winding a long recording sheet 150. The recording paper 150 shown in FIG. 1 corresponds to the front end of the recording paper 150 pulled out from the roll 152 and passing through the inside of the housing 110 and then pulled out to the front.

  FIG. 3 is a perspective view schematically showing the structure of the internal mechanism 200 of the ink jet recording apparatus 100. As shown in the figure, the internal mechanism 200 includes a guide shaft 270, a recording head assembly 230, and a suction platen 250.

  The guide shaft 270 extends horizontally in the longitudinal direction of the housing 110. The recording head assembly 230 includes a recording head 310 and a pair of ultraviolet irradiation heads 320 that sandwich the recording head 310 in the extending direction of the guide shaft 270, and a reciprocating movement direction indicated by arrows in the drawing along the guide shaft 270. Move back and forth to M.

  The recording head 310 has a nozzle on its lower surface and discharges ultraviolet curable ink. On the other hand, the ultraviolet irradiation head 320 includes an ultraviolet light source that generates ultraviolet light and a reflecting mirror that guides the ultraviolet light generated by the ultraviolet light source to the surface of the recording paper 150.

  Examples of the ultraviolet light source include ultraviolet lamps such as metal halide lamps, xenon lamps, carbon arc lamps, chemical lamps, low pressure mercury lamps, and high pressure mercury lamps. Further, a light-emitting diode made of indium gallium nitride (InGaN), gallium nitride (GaN), aluminum gallium nitride (AlGaN), or the like can be used as an ultraviolet light source. The reflecting mirror can be formed of an aluminum plate having a mirror-finished reflecting surface.

  Behind the guide shaft 270, a timing belt 220 hung on a pair of pulleys 260 is disposed. One of the pulleys 260 is rotationally driven by a carriage motor 222. Therefore, by operating the carriage motor 222, the timing belt 220 travels between the pulleys 260 in parallel with the guide shaft 270. Further, a portion of the timing belt 220 is coupled to the recording head assembly 230. Accordingly, the recording head assembly 230 moves along the reciprocating movement direction M in accordance with the operation of the carriage motor 222.

  Further, a linear scale 214 parallel to the reciprocating movement direction M is disposed above the guide shaft 270. The linear scale 214 includes a transparent carrier and a light shielding band formed on the carrier at a constant period in the reciprocating direction M. On the other hand, the recording head assembly 230 includes a detection unit that detects and counts light shielding bands. As a result, the amount of movement of the recording head assembly 230 is accurately detected. The guide shaft 270, the recording head assembly 230, the timing belt 220, and the linear scale 214 are accommodated in the upper housing 112.

  On the other hand, a suction platen 250 is disposed below the moving range of the recording head assembly 230. The suction platen 250 is accommodated in the lower housing 114. The suction platen 250 supports and adsorbs the recording paper 150 from below. As a result, the recording paper 150 with curl or the like is also held flat below the recording head 310.

  The suction platen 250 also serves as a transport device that pulls out the recording paper 150 from the roll 152 and transports the recording paper 150 toward the front surface of the ink jet recording apparatus 100. The detailed structure and operation of the suction platen 250 will be described later with reference to FIG.

  Further, a flushing portion 290 and a cap 280 are sequentially arranged outside the suction platen 250 in the moving direction of the recording head assembly 230. The flushing unit 290 absorbs the ejected ink when the flushing for ejecting a large amount of ink from the recording head 310 is executed. By such flushing, the thickened ink can be removed from the recording head 310.

  Further, the cap 280 hermetically seals the lower surface of the recording head 310 during a period when the ink jet recording apparatus 100 is at rest. This prevents the ink from thickening or solidifying in the recording head 310.

  FIG. 4 is a view showing the structure of the suction platen 250 in a cross section cut along the conveyance direction S of the recording paper 150. As shown in the figure, the suction platen 250 includes a pair of rollers 256, an endless belt 254 spanned between the rollers 256, and a support portion 252 that supports the upper endless belt 254 between the rollers 256 from below. Including.

  The rollers 256 are urged in directions away from each other by the urging member 255. This prevents the endless belt 254 from becoming slack. The inside of the support portion 252 communicates with the suction fan 258 via the duct 257. The suction fan 258 communicates with the outside through the duct 259. Thus, by operating the suction fan 258, the air inside the support portion 252 is exhausted and negative pressure is generated.

  FIG. 5 is a plan view showing a state in which the support portion 252 and the endless belt 254 are looked down from above. Further, a part A of the endless belt 254 is enlarged, and a change in state according to the displacement of the endless belt 254 is also shown.

  As shown in the figure, the support portion 252 has a plurality of support portion side suction holes 251 arranged in a matrix along the transport direction S and the reciprocating direction M on the upper surface. The support part side suction hole 251 communicates with the negative pressure inside the support part 252.

  On the other hand, the endless belt 254 also has a plurality of belt-side suction holes 253 penetrating the front and back surfaces thereof. The belt side suction holes 253 are also two-dimensionally arranged. However, while a linear row is formed with respect to the transport direction S, an inclined row is formed with respect to the transport direction M.

  Accordingly, the belt-side suction holes 253 forming the row Y adjacent to each other in the reciprocating movement direction M between the farthest end portions of the two belt-side suction holes 253 forming the row X arranged adjacent to the transport direction S. Is arranged. Further, the diameter, which is the maximum length in the transport direction, at the belt side suction hole 253 is larger than the closest distance between the outer circumferences of the two support portion side suction holes 251 adjacent to each other in the transport direction.

  When the support part side suction holes 251 and the belt side suction holes 253 forming the row X are in the same position (state 1), as shown in an enlarged view of the state transition of the part A on the right side, the support part side suction holes 251 and the belt side suction hole 253 communicate with each other, and the recording paper 150 on the endless belt 254 is adsorbed. Eventually, the endless belt 254 moves and begins to deviate from the support part side suction hole 251 and the belt side suction hole 253, but in the adjacent row Y, the other belt side suction hole 253 and the other support part side suction hole 251. (State 2), and the suction force starts to increase in the belt-side suction holes 253 of the row Y.

  When the endless belt 254 further moves and the overlap between the support portion side suction holes 251 and the belt side suction holes 253 in the row X starts to become smaller (state 3), in the row Y, the support portion side suction holes 251 and the belt side suction holes become smaller. The overlap of H.253 increases. Therefore, when the two adjacent rows X and Y are combined, the suction force of the entire portion A hardly changes.

  When the endless belt 254 further moves (state 4), in the row X, the overlap between the support portion side suction holes 251 and the belt side suction holes 253 becomes very small, but in the row Y, the support portion side suction holes 251 and the belt side. The suction holes 253 overlap almost completely. When the endless belt 254 is further moved (state 5), the support portion side suction holes 251 and the belt side suction holes 253 in the row X are hardly overlapped, but the support portion side suction holes 251 and the belt side suction holes 253 in the row Y are It overlaps completely, and the same suction force as in the initial state 1 is generated in the portion A.

  Hereinafter, since the transition of the above state is repeated according to the movement of the endless belt 254, the endless belt 254 continuously adsorbs the recording paper 150. Since the recording paper 150 adsorbed to the endless belt 254 is conveyed along with the movement of the endless belt 254, the conveyance amount of the recording paper 150 can be accurately controlled by controlling the movement amount of the endless belt 254.

  Further, since the recording paper 150 moves while being attracted to the endless belt 254, there is no sliding between the recording paper 150 and the endless belt 254. Therefore, scratches on the recording paper 150 due to sliding are fundamentally prevented.

  In the above example, the support side suction holes 251 are arranged in parallel to both the transport direction S and the reciprocating direction M, but the belt side suction holes 253 are straight in the transport direction S. On the other hand, the reciprocating direction was arranged non-linearly. However, the same effect can be obtained even when the support portion side suction holes 251 are arranged non-linearly by reversing this.

  In the ink jet recording apparatus 100 having the above-described structure, first, the suction platen 250 feeds a new area of the recording paper 150 below the recording head 310. The fed recording paper 150 is held flat below the recording head 310.

  The recording head 310 ejects ink toward the surface of the recording paper 150 while moving in the reciprocating movement direction M. The ultraviolet irradiation head 320 on the side following the recording head 310 irradiates the ultraviolet curable ink immediately after the recording head 310 discharges onto the recording paper 150 with ultraviolet rays. Accordingly, the ultraviolet curable ink is sequentially cured, and the image is fixed on the surface of the recording paper 150.

  Hereinafter, the conveyance of the recording paper 150 in the conveyance direction S by the suction platen 250 and the operation of ejecting the ultraviolet curable ink while the recording head 310 reciprocates in the reciprocating movement direction M are alternately repeated, and the surface of the recording paper 150 An image is formed by adhering ink to an arbitrary area. The ultraviolet rays emitted from the ultraviolet light source unit 322 include all bands that can cure all types of ultraviolet curable ink ejected from the recording head 310, and the ultraviolet curable ink attached to the recording paper 150 is used. It can be cured at once.

  FIG. 6 to FIG. 10 are plan views showing the structure of the suction platen 250 that also serves as a transport device according to another embodiment, in contrast to FIG. Except for the unique points described below, the suction platen 250 according to each embodiment has the same structure as the suction platen 250 and the ink jet recording apparatus 100 shown in FIGS. 1 to 5. Therefore, the same components are assigned the same reference numerals, and duplicate descriptions are omitted.

  The suction platen 250 shown in FIG. 6 has a wide gap between the belt-side suction holes 253 forming the rows X and Y in the endless belt 254. On the other hand, in the row direction, the support portion side suction holes 251 have the same interval as that of the embodiment shown in FIG.

  However, at least one belt-side suction hole 253 forming a row Y adjacent to the reciprocating movement direction M is arranged between two belt-side suction holes 253 arranged adjacent to the transport direction S and forming the row X. The Further, the diameter, which is the maximum length in the transport direction, at the belt side suction hole 253 is larger than the closest distance between the outer circumferences of the two support portion side suction holes 251 adjacent to each other in the transport direction. Accordingly, as in the embodiment shown in FIG. 5, a continuous suction force is generated on the surface of the endless belt 254. Accordingly, the endless belt 254 moves and conveys the recording paper 150 while adsorbing it.

  In the suction platen 250 shown in FIG. 6, the distance between the belt-side suction holes 253 forming the rows X and Y in the endless belt 254 is wide. On the other hand, in the row direction, the support portion side suction holes 251 have the same interval as that of the embodiment shown in FIG.

  However, at least one belt-side suction hole 253 forming a row Y adjacent to the reciprocating movement direction M is arranged between two belt-side suction holes 253 arranged adjacent to the transport direction S and forming the row X. The Further, the diameter, which is the maximum length in the transport direction, at the belt side suction hole 253 is larger than the closest distance between the outer circumferences of the two support portion side suction holes 251 adjacent to each other in the transport direction. Accordingly, as in the embodiment shown in FIG. 5, a continuous suction force is generated on the surface of the endless belt 254, and the endless belt 254 moves and conveys the recording paper 150 while adsorbed.

  In the suction platen 250 shown in FIG. 7, both the spacing between the belt side suction holes 253 forming the rows X and Y in the endless belt 254 and the spacing in the row direction of the support portion side suction holes 251 are shown in FIG. This is the same as the embodiment. However, in the reciprocating movement direction M, the belt side located between the farthest ends of the two belt side suction holes 253 adjacent to the row X and forming the row Y and the row Z and adjacent to the transport direction S in the row X Each has a suction hole 253. Thereby, the fluctuation of the suction force on the surface of the endless belt 254 is further leveled, and the recording paper 150 is stably held and conveyed.

  As in the suction platen 250 shown in FIG. 7, the suction platen 250 shown in FIG. 8 forms a row Y and a row Z adjacent to the row X in the reciprocating movement direction M, and is adjacent to the transport direction S in the row X. Each belt side suction hole 253 has a belt side suction hole 253 located between the farthest ends. However, in each row X, Y, and Z, the distance between the belt side suction holes 253 in the transport direction S is twice that of the support portion side suction holes 251.

  However, also in the suction platen 250, the diameter, which is the maximum length in the transport direction, in the belt-side suction hole 253 is larger than the closest distance between the outer peripheries of the two support part-side suction holes 251 adjacent to each other in the transport direction. Accordingly, as in the embodiment shown in FIG. 5, a continuous suction force is generated on the surface of the endless belt 254, and the endless belt 254 moves and conveys the recording paper 150 while adsorbed.

  The suction platen 250 shown in FIG. 9 has a wider distance between the belt-side suction holes 253 in each row X, Y, Z than the suction platen 250 shown in FIG. There are three times the interval. However, also in this suction platen 250, the diameter, which is the maximum length in the transport direction, in the belt side suction hole 253 is larger than the closest distance between the outer circumferences of the two support portion side suction holes 251 adjacent to each other in the transport direction. A continuous suction force is generated on the surface of the endless belt 254. Accordingly, the endless belt 254 moves and conveys the recording paper 150 while adsorbing it.

  In the suction platen 250 shown in FIG. 10, the support portion 252 has a plurality of groups each including four support portion side suction holes 251 adjacent to each other in the transport direction S and the reciprocating direction M. On the other hand, the endless belt 254 includes a plurality of groups including a pair of belt-side suction holes 253 arranged at different positions in the transport direction S.

  However, paying attention to each row, X, and Y, the diameter, which is the maximum length in the conveyance direction, of the belt-side suction hole 253 is smaller than the closest distance between the outer circumferences of the two support portion-side suction holes 251 adjacent to each other in the conveyance direction. Is also big. Further, the belt side suction holes 253 in the row Y are located between the farthest ends of the two belt side suction holes 253 adjacent to each other in the transport direction S in the row X. Therefore, the suction platen 250 also generates a continuous suction force, and the endless belt 254 moves and conveys the recording paper 150 while adsorbing it.

  11 and 12 are cross-sectional views showing the structure of a suction platen 250 according to another embodiment in contrast to FIG. Except for the parts described below, the suction platen 250 has the same structure as the suction platen 250 shown in FIG. Therefore, common constituent elements are given the same reference numerals, and redundant description is omitted.

  In the suction platen 250 shown in FIG. 11, the endless belt 254 has teeth formed on the inner surface at a constant cycle. On the other hand, each of the rollers 256 is formed with teeth on its peripheral surface to form a gear. The teeth of the endless belt 254 and the teeth of the roller 256 have shapes complementary to each other and mesh with each other. Thereby, the endless belt 254 travels according to the rotation of the roller 256 without sliding at all with respect to the roller 256. Therefore, the conveyance amount of the recording paper 150 by the endless belt 254 can be accurately controlled based on the rotation amount of the roller 256.

  The suction platen 250 shown in FIG. 12 includes a pinch roller 356 that presses the endless belt 254 against the roller 256 that is rotationally driven. The pinch roller 356 is mounted so as to be rotatable about an axis parallel to the rotation axis of the roller 256. As a result, the pinch roller 356 is rotated along with the rotation of the roller 256. Therefore, the endless belt 254 is pressed against the roller 256 while the rotation of the roller 256 is not hindered.

  Thereby, the endless belt 254 travels according to the rotation of the roller 256 without sliding with respect to the roller 256. Therefore, the conveyance amount of the recording paper 150 by the endless belt 254 can be accurately controlled based on the rotation amount of the roller 256.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. In addition, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 is a perspective view illustrating an appearance of an ink jet recording apparatus 100 as viewed from the front. 1 is a perspective view illustrating an appearance of an inkjet recording apparatus 100 as viewed from the back. 2 is a perspective view showing an internal mechanism 200 of the ink jet recording apparatus 100. FIG. 3 is a cross-sectional view showing a structure of a suction platen 250. FIG. 3 is a plan view showing a structure of a suction platen 250. FIG. 6 is a plan view showing the structure of another suction platen 250. FIG. 6 is a plan view showing the structure of another suction platen 250. FIG. 6 is a plan view showing the structure of another suction platen 250. FIG. 6 is a plan view showing the structure of another suction platen 250. FIG. 6 is a plan view showing the structure of another suction platen 250. FIG. FIG. 6 is a cross-sectional view showing the structure of another suction platen 250. FIG. 6 is a cross-sectional view showing the structure of another suction platen 250.

Explanation of symbols

100 Inkjet recording device, 110, 328 Case, 112 Upper case, 114 Lower case, 115 Guide surface, 116 Small case, 120 Leg, 130 Operation panel, 140 Cartridge holder, 150 Recording paper, 152 Roll, 160 spindle, 200 internal mechanism, 220 timing belt, 222 carriage motor, 230 recording head assembly, 240 ink cartridge, 250 suction platen, 260 pulley, 270 guide shaft, 280 cap, 290 flushing section, 310 recording head, 320 UV irradiation Head, 251 Support part side suction hole, 252 Support part, 253 Belt side suction hole, 254 Endless belt, 255 Energizing member, 256 Roller, 257, 259 Duct, 258 Suction fan, 356 Pinchiro La

Claims (5)

An endless belt having a plurality of belt side suction holes penetrating the front and back, and
A plurality of support part side suction holes communicating with the decompression source, and a support part for supporting and guiding a part of the driven endless belt,
A suction force is generated when the belt side suction hole and the support part side suction hole substantially overlap each other, and the transported medium supported on the surface of the endless belt is sucked to place the transported medium in a predetermined direction. A transported medium transport device for transporting to
The plurality of support part side suction holes are arranged in a lattice shape in the transport direction on the support part and in a direction orthogonal to the transport direction,
The maximum length in the transport direction in the belt-side suction hole is formed to be larger than the closest distance between the outer peripheries of the two support part-side suction holes adjacent to each other in the transport direction,
At least one belt side suction hole adjacent in the direction orthogonal to the transport direction is disposed between the two belt side suction holes disposed adjacent to each other in the transport direction. apparatus. An endless belt having a plurality of belt side suction holes penetrating the front and back, and
A plurality of support part side suction holes communicating with the decompression source, and a support part for supporting and guiding a part of the driven endless belt,
A suction force is generated when the belt side suction hole and the support part side suction hole substantially overlap each other, and the transported medium supported on the surface of the endless belt is sucked to place the transported medium in a predetermined direction. A transported medium transport device for transporting to
The plurality of belt-side suction holes are arranged in a lattice shape in the transport direction of the transported medium and in a direction orthogonal to the transport direction,
The maximum length in the transport direction in the support portion side suction hole is formed larger than the closest distance between the outer circumferences of the two belt side suction holes adjacent to each other in the transport direction,
Between the two support part side suction holes arranged adjacent to each other in the transport direction, at least one support part side suction hole adjacent to the direction orthogonal to the transport direction is disposed. Medium transport device. At least one of the belt side suction hole and the support part side suction hole is arranged in a plurality at a constant suction hole interval in the transport direction and in a direction orthogonal to the transport direction to form an assembly,
The transported medium transport apparatus according to claim 1, wherein a plurality of the aggregates are arranged at a wider assembly interval than the suction hole interval. A recording head that ejects ink while reciprocating; and
An endless belt that has a plurality of belt-side suction holes that penetrate the front and back, and that travels in a transport direction that intersects the reciprocating direction at a position facing the recording head;
A plurality of support part side suction holes communicating with the decompression source, and a support part for supporting and guiding a part of the driven endless belt,
A suction force is generated when the belt side suction hole and the support part side suction hole substantially overlap each other, and the transported medium supported on the surface of the endless belt is sucked to place the transported medium in a predetermined direction. A recording device for conveying to
The plurality of support part side suction holes are arranged in a lattice shape in the transport direction on the support part and in a direction orthogonal to the transport direction,
The maximum length in the transport direction in the belt-side suction hole is formed to be larger than the closest distance between the outer peripheries of the two support part-side suction holes adjacent to each other in the transport direction,
The recording apparatus, wherein at least one belt side suction hole adjacent in a direction orthogonal to the transport direction is disposed between the two belt side suction holes disposed adjacent to each other in the transport direction. A recording head that ejects ink while reciprocating; and
An endless belt that has a plurality of belt-side suction holes that penetrate the front and back, and that travels in a transport direction that intersects the reciprocating direction at a position facing the recording head;
A plurality of support part side suction holes communicating with the decompression source, and a support part for supporting and guiding a part of the driven endless belt,
A suction force is generated when the belt side suction hole and the support part side suction hole substantially overlap each other, and the transported medium supported on the surface of the endless belt is sucked to place the transported medium in a predetermined direction. A recording device for conveying to
The plurality of belt-side suction holes are arranged in a lattice shape in the transport direction of the transported medium and in a direction orthogonal to the transport direction,
The maximum length in the transport direction in the support portion side suction hole is formed larger than the closest distance between the outer circumferences of the two belt side suction holes adjacent to each other in the transport direction,
At least one support part side suction hole adjacent in the direction orthogonal to the transport direction is disposed between the two support part side suction holes disposed adjacent to each other in the transport direction. .

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