JP4911307B2 - Recording apparatus and liquid ejecting apparatus - Google Patents

Description

  The present invention relates to a recording apparatus and a liquid ejecting apparatus that include a platen that faces a recording head and supports a recording medium to be conveyed, and an ink absorbing material that is provided in the platen and can absorb ink.

Here, the liquid ejecting apparatus refers to an ink jet recording apparatus, a copying machine, a facsimile, or the like that performs recording on a recording material by ejecting ink from a recording head as a liquid ejecting head to a recording material such as recording paper. In addition to the recording apparatus, instead of ink, a liquid corresponding to a specific application is ejected from the liquid ejecting head corresponding to the recording head to the ejected material corresponding to the recording material, and the liquid is ejected to the ejected material. Used to include the device to be attached. In addition to the recording head described above, the liquid ejecting head includes a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material used for electrode formation such as an organic EL display and a surface emitting display (FED) Examples thereof include a conductive paste) ejection head, a bio-organic matter ejection head used for biochip manufacturing, and a sample ejection head that ejects a sample as a precision pipette.
The recording apparatus includes types such as an ink jet printer, a wire dot printer, a laser printer, a line printer, a copying machine, and a facsimile.

  2. Description of the Related Art Conventionally, a recording apparatus has a recording head that performs recording by ejecting ink onto a conveyed paper, a platen that supports the paper from below at a position facing the recording head, and ink in the platen. And an ink absorbing material for absorbing. Then, in order to perform recording up to the edge of the leading edge which is the downstream end in the sheet conveying direction and the trailing edge which is the upstream end, ribs on the upstream and downstream sides in the conveying direction in the range of the nozzle openings of the recording head in the platen Diamond diamond ribs spaced apart from each other are provided (for example, Patent Document 1).

And when recording the leading edge of the paper, the leading edge of the paper is transported between the diamond rib and the downstream rib in the transport direction, and the ink absorbing material between the leading edge of the paper and the diamond rib and the downstream rib. Ink-less recording was performed by ejecting ink toward the head.
On the other hand, when recording the trailing edge of the paper, the trailing edge of the paper is transported between the diamond rib and the upstream rib in the transport direction, and between the trailing edge of the paper and the diamond rib and the upstream rib. Borderless recording was performed by ejecting ink toward the ink absorbing material.
JP 2006-062309 A

  However, the ink absorbing material appears between the diamond rib and the downstream rib in order to absorb the ink discarded outside the edge of the paper in the entire range in which the paper passes in the width direction of the paper. Yes. Therefore, when the leading edge of the paper hangs down, the leading edge of the paper may come into contact with the ink absorbing material and be damaged.

  The present invention has been made in view of such circumstances, and the problem is that the recording medium is soiled when the recording medium comes into contact with the ink absorbing material provided on the platen facing the recording head. It is an object to provide a recording apparatus and a liquid ejecting apparatus that prevent this.

  In order to achieve the above object, a recording apparatus according to a first aspect of the present invention includes a platen that faces a recording head and supports a recording medium to be conveyed, and an ink that is provided in the platen and can absorb ink. In the direction of the nozzle opening row formed in the recording head in the transport direction in the absorbing material and the platen, the ink absorbing material is formed in the direction in which the recording head and the platen face each other. Ink absorption in a direction in which the first rib protruding toward the recording head, the second rib within the platen and separated from the first rib in the transport direction, and the recording head and the platen face each other. A linear member located between the material and the top of the first rib and extending in the transport direction between the first rib and the second rib. That.

  According to the first aspect of the present invention, the recording apparatus is located between the ink absorbent and the top of the first rib in a direction in which the recording head and the platen face each other, and in the transport direction. And a linear member extending between the first rib and the second rib. That is, the linear member can be provided so as to bridge between the first rib and the second rib in the transport direction.

Therefore, even when the recording medium hangs down to the ink absorbing material side in the direction in which the recording head and the platen face each other, there is no possibility that the recording medium contacts the ink absorbing material. As a result, there is no possibility that the recording medium is soiled by the ink absorbing material.
For example, it is very effective when the recording medium hangs down to the ink absorbing material side due to the ink ejected from the recording head adhering to the recording medium.

  A recording apparatus according to a second aspect of the present invention includes a platen that faces a recording head and supports a recording medium to be transported, an ink absorber that is provided in the platen and can absorb ink, and the platen And formed in the range of nozzle openings formed in the recording head in the transport direction, and protrudes from the ink absorbing material toward the recording head in a direction in which the recording head and the platen face each other. A first rib, a second rib within the platen that is spaced apart from the first rib in the transport direction, a third rib within the platen that is spaced apart from the first rib in the transport direction, and It is located between the ink absorbing material and the top of the first rib in the direction in which the recording head and the platen face each other, and in the transport direction, the third rib and the second rib. Characterized in that it and a linear member extending in the.

According to the second aspect of the present invention, the recording apparatus is located between the ink absorbent and the top of the first rib in a direction in which the recording head and the platen face each other, and in the transport direction. And a linear member extending between the third rib and the second rib. That is, the linear member can be provided so as to bridge between the third rib and the second rib in the transport direction.
Therefore, the same effect as the first aspect can be obtained.

  According to a third aspect of the present invention, in the first or second aspect, on the upstream side in the transport direction of the second rib, gradually from the ink absorbing material side toward the recording head side toward the downstream side in the transport direction. An inclined portion that is inclined so as to protrude is provided, and the linear member includes an upstream end in the transport direction of the second rib and a top portion of the first rib in a direction in which the recording head and the platen face each other. It is provided between them.

  According to the third aspect of the present invention, in addition to the same function and effect as the first or second aspect, the linear member is formed of the second rib in a direction in which the recording head and the platen face each other. It is provided between the conveyance direction upstream end and the top of the first rib. Therefore, there is no possibility that the leading end of the recording medium on the downstream side in the transport direction is caught on the upstream side in the transport direction of the second rib. As a result, there is no possibility that a so-called jam occurs in which the recording medium is jammed in the conveyance path and the recording apparatus stops.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the linear member is positioned inside the both side ends of the recording medium in the width direction of the recording medium to be conveyed. The both side ends are provided so as to be capable of being guided downstream in the transport direction.

According to the fourth aspect of the present invention, in addition to the same function and effect as in any one of the first to third aspects, the linear member has a recording medium in the width direction of the recording medium to be conveyed. The both side ends are provided so as to be guided downstream in the transport direction. Therefore, it is possible to prevent the recording medium from being caught by the side edge and from being contaminated by the contact with the ink absorbing material.
In particular, it is possible to prevent the leading end that is the downstream end in the transport direction of the recording medium from being caught and soiled by the contact. This is very effective when the recording medium tends to curl due to adhesion of ink ejected from the recording head.

According to a fifth aspect of the present invention, in the fourth aspect, the linear member is provided adjacent to a set of two.
According to the 5th aspect of this invention, in addition to the effect similar to a 4th aspect, the said linear member is provided adjacent to 2 sets. Therefore, in the linear member, the ink adhering to the recording head side can be retreated from the recording head side by a capillary phenomenon generated by adjoining a pair of two. As a result, the linear member can reduce the possibility that the recording medium will be soiled by contact with the linear member.

According to a sixth aspect of the present invention, in the fifth aspect, one of the two linear members is provided at a position different from the other in the direction in which the recording head and the platen face each other. It is characterized by that.
According to the sixth aspect of the present invention, in addition to the same function and effect as the fifth aspect, one of the two linear members is arranged in the direction in which the recording head and the platen face each other. It is provided at a different position. Therefore, the contact area when the recording medium comes into contact with the linear member is compared with the contact area when two are provided at the same position in the direction in which the recording head and the platen face each other. Can be small. As a result, the linear member can further reduce the possibility that the recording medium will be soiled by contact with the linear member.

  Further, the adhering ink is moved further from the outer circumference on the recording head side of the linear member closer to the recording head than in the case where it is provided at the same position as the other in the facing direction. Can be made.

  A liquid ejecting apparatus according to a seventh aspect of the present invention includes a mounting unit on which a liquid ejecting medium is placed, a feeding unit that feeds the placed liquid ejecting medium, and a feed from the feeding unit. A liquid ejecting apparatus comprising: a liquid ejecting unit that ejects a liquid onto a fed liquid ejecting medium by a liquid ejecting head; and a discharge unit that ejects the liquid ejecting medium, wherein the liquid ejecting unit includes the liquid A platen that opposes the ejection head and supports the liquid ejection medium to be transported, a liquid absorber provided in the platen and capable of absorbing liquid, and the liquid ejection in the transport direction in the platen A first rib formed in a range of nozzle openings formed in the head and projecting from the liquid absorbent to the liquid ejecting head side in a direction in which the liquid ejecting head and the platen face each other; And the first And the second rib spaced apart in the transport direction, and the liquid ejecting head and the platen in a direction facing each other, and located between the liquid absorbent material and the top of the first rib. And a linear member extending between the first rib and the second rib.

  A liquid ejecting apparatus according to an eighth aspect of the present invention includes a mounting unit on which a liquid ejecting medium is placed, a feeding unit that feeds the placed liquid ejecting medium, and a feed from the feeding unit. A liquid ejecting apparatus comprising: a liquid ejecting unit that ejects a liquid onto a fed liquid ejecting medium by a liquid ejecting head; and a discharge unit that ejects the liquid ejecting medium, wherein the liquid ejecting unit includes the liquid A platen that opposes the ejection head and supports the liquid ejection medium to be transported, a liquid absorber provided in the platen and capable of absorbing liquid, and the liquid ejection in the transport direction in the platen A first rib formed in a range of nozzle openings formed in the head and projecting from the liquid absorbent to the liquid ejecting head side in a direction in which the liquid ejecting head and the platen face each other; And the first A second rib that is spaced apart from the first rib in the transport direction, a third rib that is spaced from the first rib in the transport direction, and a direction in which the liquid ejecting head and the platen face each other. A linear member located between the absorbent material and the top of the first rib and extending in the transport direction between the third rib and the second rib. To do.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall perspective view showing an outline of a recording apparatus which is an example of a liquid ejecting apparatus according to the invention. FIG. 2 is an overall plan view showing an outline of the recording apparatus according to the present invention.
On the back side of the main body of the recording apparatus 100, a hopper 101 of a placement unit 145 on which a sheet P as a recording medium is placed and stacked is in contact with and separated from a feed roller 190 described later of the feed unit 144. It is provided to be movable. Specifically, the hopper 101 is provided so as to swing about a pair of hopper shafts (not shown) provided above the hopper 101 in the width direction X of the paper P to be placed.

  Then, the paper P placed on the top of the hopper 101 is fed by the feeding unit 144 to the recording unit side, which is the downstream side in the transport direction. Specifically, the loaded paper P is guided to the left and right paper guides 103 and 103 by the feed roller 190 driven by the feed motor 104, and the transport roller pair 207 (on the downstream side in the transport direction Y). 3 and 4). The sheet P fed to the transport roller pair 207 (see FIGS. 3 and 4) is further transported in the transport direction Y by a transport roller pair 207 (see FIGS. 3 and 4) driven by a transport motor (not shown). To the recording unit 143 on the downstream side.

  The recording unit 143, which is an example of a liquid ejecting unit, includes a platen 105 that supports the paper P from below and a carriage 107 that is provided to face the platen 105. Among them, the carriage 107 is driven by the carriage motor 102 while being guided by a carriage guide shaft (not shown) extending in the main scanning direction which is the width direction X of the paper P to be conveyed. Further, a recording head 106 that is an example of a liquid ejecting head that discharges ink that is an example of liquid toward the paper P is provided on the bottom surface of the carriage 107. The paper P recorded by the recording unit 143 is conveyed further downstream and is discharged from the front side of the recording apparatus 100 by a discharge roller pair 210 (see FIG. 4) as the discharge unit 146.

  Further, an ink cartridge (not shown) is loaded below the main body of the recording apparatus 100, and ink is supplied to an ink supply path (not shown) via an ink supply needle (not shown). Further, the ink is supplied to the recording head 106 of the carriage 107 via the ink supply tube 110. When the recording head 106 is flushed and cleaned, ink is ejected and sucked in the ink suction device 200 that is provided on the first digit side and maintains the ejection characteristics of the recording unit 143. The ink suction device 200 includes a cap unit 204, and is configured to seal the recording head 106 by moving the cap unit 204 in the vertical direction.

FIG. 3 is a perspective view schematically showing the platen of the recording unit according to the present invention. FIG. 4 is a side sectional view showing the outline of the platen of the recording unit according to the present invention. Further, FIG. 5 is an enlarged front sectional view showing a main part of the linear member according to the present invention.
FIG. 5 is a cross-sectional view of an upstream side rib and a central rib, which will be described later, viewed from the upstream side in the transport direction.

  As shown in FIGS. 3 to 5, the recording unit 143 is provided with a platen base 220 that forms the platen 105. The platen base portion 220 is provided so as to rotatably hold the transport roller pair 207. The conveyance roller pair 207 includes a conveyance drive roller 208 that is driven by the power of the conveyance motor, and a plurality of conveyance driven rollers 209, 209, and the like that rotate according to the rotation of the conveyance drive roller 208.

Further, the platen base portion 220 is provided so as to hold the discharge roller pair 210 in a rotatable manner. The discharge roller pair 210 includes a discharge drive roller 211 that is driven by the power of the conveying motor transmitted by the gear unit 206, and a plurality of discharge driven knurled rollers 212, 212... That rotate according to the rotation of the discharge drive roller 211. .
Further, the platen base 220 is formed with a plurality of upstream ribs 222, 222, a plurality of central ribs 223, 223, and a plurality of downstream ribs 224, 224,. Yes.

  In the transport direction Y, a recess 221 is provided between the plurality of upstream ribs 222, 222... And the plurality of downstream ribs 224, 224. In the concave portion 221, an ink absorbing material 225 that is an example of a liquid absorbing material that can absorb ink discarded from the nozzle opening row 205 provided in the recording head 106 is disposed.

  Here, the nozzle opening row 205 is a range narrower in the transport direction Y than the downstream end in the transport direction Y of the upstream ribs 222, 222... And the upstream end in the transport direction of the downstream ribs 224, 224. Is formed. That is, the nozzle opening row 205 is formed in the range of the recess 221 in the transport direction Y. In other words, the ink ejected from the nozzle opening row 205 is configured not to scatter outside the recess 221 in the transport direction Y.

The recesses 221 are provided such that the central ribs 223, 223... Are separated from the upstream ribs 222, 222... And the downstream ribs 224, 224. The central ribs 223, 223,... Are provided in a range in which the nozzle opening row 205 of the recording head 106 is formed in the transport direction Y.
Further, a plurality of central ribs 223, 223,... Are arranged at positions where several types of paper P of a predetermined size can be supported from the lower side on both sides in the width direction X from below.

Then, in the width direction X of the platen 105, a concave portion 221 is formed in the vicinity of the outside of both side ends of several types of paper P of a predetermined size, and an ink absorbing material 225 is disposed.
That is, when performing borderless recording, the central ribs 223, 223,... Are arranged so that the ink discharged to the outside of both side ends in the width direction X of the paper P of a predetermined size is absorbed by the ink absorbing material. It is divided in the width direction X and provided.

  Further, between the central ribs 223, 223... And the downstream ribs 224, 224..., Recesses 221 are formed in the entire range in which the paper P is conveyed in the width direction X. Therefore, when the leading end (downstream end in the transport direction) of the paper P reaches between the central ribs 223, 223... And the downstream ribs 224, 224. By ejecting ink from the row 205, borderless recording can be performed on the leading edge of the paper P.

  Similarly, between the upstream ribs 222, 222... And the central ribs 223, 223... In the transport direction Y, recesses 221 are formed in the entire range in which the paper P is transported in the width direction X. Therefore, when the rear end (upstream end in the transport direction) of the paper P reaches between the upstream ribs 222, 222... And the central ribs 223, 223. By ejecting ink from the nozzle opening row 205, borderless recording can be performed on the trailing edge of the paper P.

Furthermore, the 1st inclination part 223a, 223a ... is provided in the conveyance direction upstream of the center ribs 223, 223 .... The first inclined portions 223a, 223a,... Are inclined so as to be separated from the recording head 106 in the direction Z in which the recording head 106 and the platen 105 face each other toward the upstream side in the transport direction.
Similarly, second inclined portions 224a, 224a,... Are provided upstream of the downstream ribs 224, 224,. The second inclined portions 224a, 224a,... Are also inclined so as to be separated from the recording head 106 in the direction Z in which the recording head 106 and the platen 105 face each other toward the upstream side in the transport direction.

  Further, in the width direction X of the concave portion 221, a set of two linear members 230, 230 extending in the transport direction Y is provided in the vicinity of the inner side of both side edges of several types of paper P of a predetermined size. Has been. That is, a plurality of sets of linear members 230, 230... Are provided in the width direction X for several types of paper P. One end of each of the linear members 230 and 230 is firmly engaged with the first engaging portion 240 (see FIG. 4) on the downstream side of the upstream ribs 222, 222... Of the platen base 220, and the other end is on the downstream side. The ribs 224, 224... Are provided so as to be firmly engaged with the second engaging portions 241 (see FIG. 4) on the upstream side. That is, the linear members 230 and 230 are provided so as to bridge the upper surface of the ink absorbing material 225 of the recess 221.

  In the direction Z in which the recording head 106 and the platen 105 face each other, the linear members 230 and 230 are provided between the top portions 223b, 223b,... Of the central ribs 223, 223, and the ink absorbing material 225. . Further, in the facing direction Z, the position of the outer circumferential surface 230a on the recording head side of the linear members 230, 230 is the position of the upstream end in the transport direction of the second inclined portions 224a, 224a,. Thus, the recording head side is configured.

Further, in the facing direction Z, the position of the outer peripheral surface 230a on the recording head side in the linear members 230, 230 is the position of the upstream end in the transport direction of the first inclined portions 223a, 223a,. Thus, the recording head side is configured.
Further, the two linear members 230 and 230 are provided at the same position in the opposing direction Z. The pair of linear members 230, 230 are provided so as to be adjacent to each other.

Next, the function and effect of the pair of linear members 230 and 230 will be described.
As shown in FIG. 4, when the paper P is conveyed, ink is ejected from the nozzle opening row 205 of the recording head 106. At this time, the leading edge of the paper P tends to drop toward the ink absorbing material due to the weight of the ink. This tendency is particularly strong in the case of the paper P having a weak stiffness. The leading edge of the lowered paper P comes into contact with a pair of linear members 230 and 230. Therefore, the linear members 230 and 230 can prevent the paper P from coming into contact with the ink absorbing material 225.

  Subsequently, when the paper P is further conveyed, the pair of linear members 230 and 230 guides the leading end of the paper P to the second inclined portion side without contacting the ink absorbing material 225. Can do. As described above, in the facing direction Z, the position of the outer peripheral surface 230a on the recording head side in the linear members 230, 230 is the position of the second inclined portions 224a, 224a,. It is configured to be closer to the recording head than the position of the upstream end.

  Therefore, the set of two linear members 230, 230 can guide the leading edge of the paper P to the inclined surfaces of the second inclined portions 224a, 224a,. That is, the set of two linear members 230, 230 can prevent the leading edge of the paper P from being caught in the recesses 221 between the central ribs 223, 223, and the downstream ribs 224, 224,. As a result, there is no possibility that the recording apparatus 100 stops due to a paper jam in which the leading edge of the paper P is caught in the concave portion 221 of the platen 105.

  Here, the linear members 230 and 230 are very thin lines. Therefore, even when the ink is discarded into the recess 221 for borderless recording, the amount of ink that lands on the linear members 230 and 230 is very small. As a result, even when the linear members 230 and 230 are in contact with the paper P, the amount of ink adhering to the back side of the paper P is almost zero. That is, there is almost no possibility that the back side of the paper P is soiled.

  Further, curling tends to occur when the paper P is applied to the ink. Specifically, the surface, which is the surface on the recording head side, of the paper P is expanded by the ink, and thus tends to be warped in a convex shape. In particular, both side edges in the width direction X of the leading edge of the paper P tend to be lowered toward the ink absorbing material. Even in such a case, the pair of linear members 230 and 230 are disposed in the width direction X in the vicinity of the inner sides of both side edges in the width direction X of the paper P. Can be guided to the inclined surfaces of the second inclined portions 224a, 224a,... Of the downstream ribs 224, 224,.

  Furthermore, the linear members 230 and 230 are provided so as to be adjacent to each other in pairs at the same position in the opposite direction Z, that is, at the same height. Therefore, even when the ink droplet L1 has landed on the outer circumferential surface 230a on the recording head side of the linear members 230, 230, the ink phenomenon is caused by the so-called capillary phenomenon acting between the adjacent linear members 230, 230. The droplet L1 can be moved between a pair of linear members 230, 230.

  That is, the ink droplet L1 can be moved so as to retract from the outer peripheral surface 230a of the linear members 230, 230 on the recording head side. As a result, there can be no ink droplets on the outer peripheral surface 230a on the recording head side of the linear members 230, 230. That is, even when the paper P is in contact with the linear members 230 and 230, there is no possibility that the paper P is soiled.

Furthermore, the linear members 230 and 230 are firmly engaged with the first engaging portion 240 (see FIG. 4) and the second engaging portion 241 (see FIG. 4). Therefore, the linear members 230 and 230 can hold the ink absorbing material 225 in the recess 221. At this time, the linear members 230 and 230 can accurately position the surface of the ink absorbing material 225 on the recording head side. That is, the occurrence of so-called mist can be reduced by shortening the distance from the nozzle opening row 205 to the surface on the recording head side of the ink absorbing material as much as possible.
In addition, the linear members 230 and 230 are so good that they are thin. The diameter is desirably 1 mm or less. The material is preferably made of metal. It may be an elastic member. For example, a rod-shaped spring may be used. In such a case, it is possible to have a single engaging portion.

As described above, the description has been given between the central ribs 223, 223, and the downstream ribs 224, 224, but the same effect can be obtained between the upstream ribs 222, 222, and the central ribs 223, 223,. Can do. This is particularly effective when the range of the nozzle opening row 205 is long in the transport direction Y or when the amount of ink discharged is large.
Further, the linear members 230, 230 are configured to bridge between the upstream ribs 222, 222, and the downstream ribs 224, 224, but the upstream ribs 222, 222, and the central rib 223, .., Or only between the central ribs 223, 223... And the downstream ribs 224, 224.

  The recording apparatus 100 according to the present embodiment is opposed to the recording head 106 and supports a platen 105 that supports a sheet P that is an example of a recording medium to be conveyed, and an ink absorber 225 that is provided in the platen and can absorb ink. In the direction of the nozzle opening 205 formed in the recording head 106 in the transport direction Y in the transport direction Y, and in the direction Z in which the recording head 106 and the platen 105 face each other, the ink absorbing material 225 .., Which are first ribs that protrude toward the recording head, and within the platen, are separated from the central ribs 223, 223,... In the transport direction Y and are guided to a discharge unit 146 that discharges the paper P. In the direction Z in which the downstream ribs 224, 224..., Which are the second ribs, and the recording head 106 and the platen 105 face each other, the ink absorbing material 22 is used. Are linear members extending between the central ribs 223, 223 ... and the downstream ribs 224, 224 ... in the conveying direction Y. 230, 230...

  The recording apparatus 100 according to the present embodiment includes a platen 105 that faces the recording head 106 and supports the paper P to be conveyed, an ink absorber 225 that is provided in the platen and can absorb ink, and a platen. Thus, in the transport direction Y, it is formed within the range of the nozzle opening row 205 formed in the recording head 106, and protrudes from the ink absorbing material 225 to the recording head side in the direction Z in which the recording head 106 and the platen 105 face each other. Are the first ribs that are in the platen and are spaced apart from the central ribs 223, 223,... In the transport direction Y, and are guided to the discharge unit 146 that discharges the paper P. The downstream ribs 224, 224,... Are separated from the central ribs 223, 223,. In the direction Z in which the recording head 106 and the platen 105 face each other, the upstream side ribs 222, 222, which are third ribs guided to the side 223, and the top portions 223b of the center ribs 223, 223,. Are arranged between the upstream ribs 222, 222, and the downstream ribs 224, 224, etc. in the transport direction Y. It is characterized by that.

  Further, in the present embodiment, the downstream ribs 224, 224... Are formed as inclined portions that are inclined so as to gradually protrude from the ink absorbing material side toward the recording head side toward the downstream side in the conveyance direction. Are arranged in the direction Z in which the recording head 106 and the platen 105 face each other. The second inclined portions 224a, 224a of the downstream ribs 224, 224,. Are provided between the upstream end in the conveying direction and the top portions 223b, 223b, and so on of the central ribs 223, 223, and so on.

In the present embodiment, the linear members 230 and 230 are positioned inside the both side edges of several predetermined size papers P in the width direction X of the paper P to be transported, and the both side edges are downstream in the transport direction. It is provided so that it can be guided to the side.
Further, the linear members 230 and 230 of the present embodiment are provided adjacent to each other in pairs.

[Other embodiment 1]
FIG. 6 is an enlarged front sectional view of a main part showing a linear member according to another embodiment 1.
As shown in FIG. 6, the linear members 330 adjacent to each other in the set of other embodiment 1 are composed of a first linear member 331 and a second linear member 332. The first linear member 331 is provided at a position different from the second linear member 332 in the direction Z in which the recording head 106 and the platen 105 face each other. That is, the first linear member 331 is provided so as to be shifted from the position of the second linear member 332 in the facing direction Z.
Since other members are the same as those in the above-described embodiment, the same reference numerals are used and description thereof is omitted.

  Therefore, when the paper P is lowered and contacts the linear member 330 as described above, only the first linear member 331 is in contact with the paper P. That is, the contact area between the sheet P and the linear member 330 can be halved while maintaining the above-described effect of retracting the ink droplet as compared with the above-described embodiment. As a result, it is possible to reduce the possibility that the ink droplets immediately after landing on the linear member 330 will contaminate the paper P.

Further, compared to the above-described embodiment, the above-described ink droplet can be further separated from the outer peripheral surface 331a on the recording head side of the first linear member 331. As a result, the retracted ink droplet L2 can be more reliably prevented from coming into contact with the paper P.
Furthermore, by shifting the positions of the first linear member 331 and the second linear member 332, different roles can be achieved. The first linear member 331 can prevent the paper P from coming into contact with the ink absorbing material 225. On the other hand, the second linear member 332 can regulate the position of the ink absorbing material 225.

Then, the first linear member 331 and the second linear member 332 form a pair, so that the landed ink droplet can be retreated as described above. At this time, as described above, the retracted ink droplet L2 can be more retracted than in the above-described embodiment.
In the other embodiment 1, the first linear member 331 that is one of the two linear members 330 is the second linear member that is the other in the direction Z in which the recording head 106 and the platen 105 face each other. It is provided at a position different from 332.

Note that the linear member has a shape in which a portion in contact with the sheet P as a recording member is in point contact or line contact, and has a slight gap in which capillary action occurs, and the position of the surface on the recording head side in the ink absorbing member is determined. Anything that can be positioned is acceptable. In such a case, an equivalent effect can be expected. For example, even if the linear member 230 is a member in which two thin metal plates are stacked or a plurality of linear members in the recording medium conveyance direction, it is needless to say that the same effect can be obtained.
Of course, the cross-sectional shape of the linear member is not limited to a circle. It may be a polygon.

[Other embodiment 2]
FIG. 7 is a perspective view schematically showing a platen of a recording unit according to another embodiment 2.
As shown in FIG. 7, a first ink absorbing material 401 and second ink absorbing materials 402, 402... Are provided as the ink absorbing material 400 in the concave portion 221 of the platen 105. The second ink absorbing materials 402, 402... Are slightly projected from the first ink absorbing material 401 toward the recording head in the direction Z in which the recording head 106 and the platen 105 face each other. Specifically, the second ink absorbing materials 402, 402... Protrude from the bottom (downward) of the recess 221 through the first ink absorbing material 401 to the recording head side.

Here, the first ink absorbing material 401 is formed of a sponge as an example of a material having a property of penetrating ink. On the other hand, the second ink absorbing materials 402, 402,... Are formed by a bell eater as an example of a material having a characteristic of holding ink.
The protruding portions 402a, 402a,... Of the second ink absorbers 402, 402,. By providing the protruding portions 402a, 402a,... In the same manner as the linear member 230 of the above-described embodiment, it is possible to prevent the paper P from coming into contact with the first ink absorbing material 401.

That is, when the paper P is lowered in the facing direction Z, the protruding portions 402a, 402a,... Of the second ink absorbers 402, 402,. Contact with 401 can be prevented. The protruding portions 402a, 402a,... Can obtain the same effects as the linear member 230 of the above-described embodiment.
The second ink absorbing materials 402, 402... Have a strong ink holding force, and therefore the paper P may be soiled even when the second ink absorbing materials 402, 402. There is no.

Further, the protruding portions 402a, 402a,... Of the second ink absorbers 402, 402,... Are provided in the same position as the linear member 230 of the above-described embodiment in the width direction X.
Further, the protruding portions 402a, 402a,... Of the second ink absorbers 402, 402,... Extend in the transport direction Y from the downstream side of the upstream ribs 222, 222, to the upstream side of the downstream ribs 224, 224,. Can be provided.
In such a case, it is possible to obtain the same effect as the linear member 230 of the above-described embodiment.
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.

1 is an overall perspective view showing an outline of a recording apparatus according to the present invention. 1 is an overall plan view showing an outline of a recording apparatus according to the present invention. FIG. 3 is a perspective view illustrating an outline of a platen of a recording unit according to the invention. FIG. 3 is a side sectional view showing an outline of a platen of a recording unit according to the invention. The principal part expanded front sectional view which shows the linear member which concerns on this invention. The principal part expanded front sectional view which shows the linear member which concerns on other Embodiment 1. FIG. FIG. 9 is a perspective view illustrating an outline of a platen of a recording unit according to another embodiment 2.

Explanation of symbols

100 recording device, 101 hopper, 102 carriage motor, 103 paper guide,
104 feeding motor, 105 platen, 106 recording head, 107 carriage,
110 Ink supply tube, 143 recording unit, 144 feeding unit, 145 mounting unit,
146 Discharging unit, 190 feeding roller, 200 ink suction device, 204 cap unit,
205 nozzle opening row, 206 gear unit, 207 pair of transport rollers,
208 conveying drive roller, 209 conveying driven roller, 210 discharge roller pair,
211 discharge driving roller, 212 discharge driven knurled roller, 220 platen base portion,
221 concave portion, 222 upstream rib, 223 central rib, 223a first inclined portion,
223b top portion, 224 downstream rib, 224a second inclined portion, 225 ink absorbing material,
230 linear member, 230a outer peripheral surface on the recording head side, 240 first engaging portion,
241 2nd engaging part, 330 linear member (of other embodiment 1), 331 1st linear member,
331a outer peripheral surface on the recording head side, 332 second linear member,
400, an ink absorbing material (of other embodiment 2), 401 a first ink absorbing material,
402 second ink absorbing material, 402a protruding portion, L1 ink droplet,
L2 (Embodiment 1) withdrawn ink droplets, P paper, X (paper) width direction,
Y transport direction, Z facing direction (recording head and platen)

Claims (8)

A platen that faces the recording head and supports the recording medium to be conveyed;
An ink absorber provided in the platen and capable of absorbing ink;
In the platen, in the transport direction, is formed within a range of nozzle opening rows formed in the recording head, and in the direction in which the recording head and the platen face each other, the ink absorbing material is closer to the recording head. A first rib protruding to
A second rib within the platen and spaced apart from the first rib in the transport direction;
It is located between the ink absorbing material and the top of the first rib in the direction in which the recording head and the platen face each other, and extends between the first rib and the second rib in the transport direction. And a linear member. A platen that faces the recording head and supports the recording medium to be conveyed;
An ink absorber provided in the platen and capable of absorbing ink;
In the platen, in the transport direction, is formed within a range of nozzle opening rows formed in the recording head, and in the direction in which the recording head and the platen face each other, the ink absorbing material is closer to the recording head. A first rib protruding to
A second rib within the platen and spaced apart from the first rib in the transport direction;
A third rib within the platen and spaced apart from the first rib in the transport direction;
It is located between the ink absorbing material and the top of the first rib in the direction in which the recording head and the platen face each other, and extends between the third rib and the second rib in the transport direction. And a linear member. 3. The recording apparatus according to claim 1, wherein the second rib is inclined to the upstream side in the transport direction so as to gradually protrude from the ink absorbing material side toward the recording head side toward the downstream side in the transport direction. An inclined part is provided,
The linear member is a recording apparatus provided between the upstream end in the transport direction of the second rib and the top of the first rib in a direction in which the recording head and the platen face each other.   4. The recording apparatus according to claim 1, wherein the linear member is positioned inside both ends of the recording medium in the width direction of the recording medium to be conveyed, A recording apparatus provided such that the end can be guided downstream in the transport direction.   The recording apparatus according to claim 4, wherein the linear members are provided adjacent to each other in pairs.   6. The recording apparatus according to claim 5, wherein one of the two linear members is provided at a position different from the other in the direction in which the recording head and the platen face each other. A placement unit on which the liquid ejection medium is placed;
A feeding unit that feeds the liquid ejecting medium placed thereon;
A liquid ejecting unit that ejects liquid onto the liquid ejecting medium fed from the feeding unit by a liquid ejecting head;
A liquid ejecting apparatus comprising: a discharge unit that discharges the liquid ejecting medium;
The liquid ejecting unit is
A platen facing the liquid ejecting head and supporting a liquid ejecting medium to be conveyed;
A liquid absorbent material provided in the platen and capable of absorbing liquid;
The liquid is formed in the platen within a range of nozzle openings formed in the liquid ejecting head in the transport direction, and the liquid absorbing material absorbs the liquid in a direction in which the liquid ejecting head and the platen face each other. A first rib protruding toward the ejection head;
A second rib within the platen and spaced apart from the first rib in the transport direction;
In the direction in which the liquid ejecting head and the platen face each other, the liquid ejecting head is located between the liquid absorbent material and the top of the first rib, and extends between the first rib and the second rib in the transport direction. And a linear member provided. A placement unit on which the liquid ejection medium is placed;
A feeding unit that feeds the liquid ejecting medium placed thereon;
A liquid ejecting unit that ejects liquid onto the liquid ejecting medium fed from the feeding unit by a liquid ejecting head;
A liquid ejecting apparatus comprising: a discharge unit that discharges the liquid ejecting medium;
The liquid ejecting unit is
A platen facing the liquid ejecting head and supporting a liquid ejecting medium to be conveyed;
A liquid absorbent material provided in the platen and capable of absorbing liquid;
The liquid is formed in the platen within a range of nozzle openings formed in the liquid ejecting head in the transport direction, and the liquid absorbing material absorbs the liquid in a direction in which the liquid ejecting head and the platen face each other. A first rib protruding toward the ejection head;
A second rib within the platen and spaced apart from the first rib in the transport direction;
A third rib within the platen and spaced apart from the first rib in the transport direction;
In the direction in which the liquid ejecting head and the platen face each other, the liquid ejecting head is located between the liquid absorbent material and the top of the first rib, and extends between the third rib and the second rib in the transport direction. And a linear member provided.

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