JP2016113222A - Recording device and recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress oblique transportation of a medium.SOLUTION: A recording device comprises: a transportation section 9 capable of transporting a medium P; a detection section 8 capable of detecting a transportation direction A of the medium P by the transportation section 9; a recording section 12 capable of performing recording onto the medium P transported by the transportation section 9; rotating bodies 6 being provided with contactable regions R2(R3) where friction coefficients are increased to the other sides of the medium P with respect to one sides in an intersection direction B intersecting with the transportation direction A and contactable regions R3(R2) where the friction coefficients are decreased to the other sides with respect to the one sides, capable of being brought into contact with a surface 17 of an opposite side to a recording surface 16 performed with the recording by the recording section 12 in the medium P and having rotation axes of the intersection direction B; and a control section 23 controlling the rotating bodies 6 on the basis of detection results of the detection section 8 and setting the contact regions of the rotating bodies 6 with respect to the medium P.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a recording apparatus and a recording method.

2. Description of the Related Art Conventionally, a recording apparatus that transports a medium and records on the transported medium has been used. In such a recording apparatus, when the medium is transported obliquely, the quality of the recorded image may be deteriorated, or an image or medium recorded when the medium and the recording unit come into contact with the medium due to wrinkles. In addition, there is a risk of damaging the recording part. For this reason, a technique aimed at suppressing the oblique conveyance of the medium is disclosed.
For example, Patent Document 1 discloses a transport apparatus including a skew correction roller pair having a roller provided with contact areas having different friction coefficients with respect to a medium.

JP 2013-107713 A

However, since the transport device of Patent Document 1 is configured to contact the upper roller of the skew correction roller pair with the upper surface of the medium, when used in a recording apparatus, the roller is brought into contact with the recording surface of the medium. There is a risk of damage to the recording surface. In addition, since the configuration assumes correction of skew feeding of a single-cut medium, it cannot be used for a continuous medium such as a roll-shaped medium, and a usable medium is limited.
As described above, in a recording apparatus that transports a conventional medium and records it on the transported medium, it may be difficult to suppress the oblique transport of the medium.

  Therefore, an object of the present invention is to suppress the oblique conveyance of the medium.

  The recording apparatus according to the first aspect of the present invention for solving the above-described problem includes a transport unit capable of transporting a medium, a detection unit capable of detecting the transport direction of the medium by the transport unit, and transported by the transport unit. A recording section capable of recording on the medium, a contactable area in which a coefficient of friction with respect to the medium on the other side increases with respect to one side in the crossing direction intersecting the transport direction, and the other side with respect to the one side A rotation area having a rotation axis in the intersecting direction that is capable of contacting a surface of the medium opposite to a recording surface on which recording is performed by the recording unit. And a control unit that controls the rotating body to change a contact area of the rotating body with respect to the medium based on a detection result of the detecting unit.

  The recording apparatus according to the second aspect of the present invention is capable of recording on a conveyance unit capable of conveying a medium, a detection unit capable of detecting a conveyance direction of the medium by the conveyance unit, and the medium conveyed by the conveyance unit. A contact area where the contact area with respect to the medium on the other side with respect to one side in the crossing direction intersecting with the transport direction is large, and a contact area with respect to the medium on the other side with respect to the one side A rotating body having a rotation axis in the intersecting direction, which can be in contact with a surface of the medium opposite to a recording surface on which recording is performed by the recording unit, A control unit that controls the rotating body based on a detection result to change a contact area of the rotating body with respect to the medium.

  A recording apparatus according to a third aspect of the present invention is the recording apparatus according to the first or second aspect, further comprising a moving body that moves together with the recording unit in the intersecting direction, and the detection unit is provided in the moving body. It is characterized by that.

  The recording apparatus according to a fourth aspect of the present invention is characterized in that, in the first or second aspect, the detection unit is provided upstream of the recording unit in the transport direction.

  A recording apparatus according to a fifth aspect of the present invention includes, in the first or second aspect, a winding unit that is provided on the downstream side in the transport direction from the recording unit and that can wind up the medium. The detection unit is provided downstream of the recording unit in the transport direction and upstream of the winding unit in the transport direction.

  The recording apparatus according to a sixth aspect of the present invention is the recording apparatus according to any one of the first to fifth aspects, wherein the length of the rotating body in the intersecting direction is the intersecting direction of the medium in the medium transport path. It is more than the conveyance length of this.

  A recording apparatus according to a seventh aspect of the present invention is the recording apparatus according to any one of the first to sixth aspects, wherein the recording apparatus is provided on the downstream side in the transport direction from the recording unit, and the recording apparatus is disposed on the medium in the intersecting direction. On the other hand, it comprises a tension generating section that makes contact with the contact section and applies tension to the medium, and the rotating body is provided in the contact section.

  According to an eighth aspect of the present invention, there is provided a recording method capable of recording on a medium capable of conveying a medium, a detection part capable of detecting a conveyance direction of the medium by the conveyance part, and the medium conveyed by the conveyance part. A recording method comprising: a recording unit comprising: a recording region, a contactable region in which a coefficient of friction with respect to the medium on the other side is greater than one side in a crossing direction intersecting the transport direction, and the one side And a contactable area with a small friction coefficient with respect to the medium on the other side, and the rotation in the intersecting direction capable of contacting the surface of the medium opposite to the recording surface on which recording is performed by the recording unit. A contact area of a rotating body having an axis is set based on a detection result of the detection unit, and the medium is transported and recorded on the medium.

  The recording method according to the ninth aspect of the present invention is capable of recording on a transport unit capable of transporting a medium, a detection unit capable of detecting the transport direction of the medium by the transport unit, and the medium transported by the transport unit. A recording area comprising: a recording area, a contact area where the contact area with respect to the medium on the other side is larger than one side in the crossing direction intersecting the transport direction, and the one side And a contactable region with a smaller contact area with respect to the medium on the other side is provided, and the rotation in the intersecting direction can contact the surface of the medium opposite to the recording surface on which recording is performed by the recording unit. A contact area of a rotating body having an axis is set based on a detection result of the detection unit, and the medium is transported and recorded on the medium.

  According to the present invention, skew feeding of a medium can be suppressed.

1 is a schematic side view illustrating a recording apparatus according to a first embodiment of the invention. 1 is a schematic perspective view illustrating a recording apparatus according to a first embodiment of the invention. 1 is a schematic diagram illustrating a main part of a recording apparatus according to Embodiment 1 of the invention. 1 is a block diagram of a recording apparatus according to Embodiment 1 of the present invention. FIG. 3 is a schematic plan view illustrating a main part of the recording apparatus according to the first embodiment of the invention. Schematic showing the principal part of the recording device which concerns on Example 2 of this invention. Schematic showing the principal part of the recording device which concerns on Example 3 of this invention. FIG. 6 is a schematic side view illustrating a recording apparatus according to a fourth embodiment of the invention. FIG. 10 is a schematic plan view illustrating a main part of a recording apparatus according to a fifth embodiment of the invention. 6 is a flowchart of a recording method according to an embodiment of the present invention.

Hereinafter, a recording apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[Example 1] (FIGS. 1 to 5)
FIG. 1 is a schematic side view showing the recording apparatus 1 of the present embodiment, and FIG. 2 is a schematic perspective view showing the recording apparatus 1 of the present embodiment. FIGS. 1 and 2 both show the components of the recording apparatus 1 such as a housing part omitted, and particularly FIG. 2 shows a rotation that can adjust the conveyance direction of the medium, which is a main part of the present embodiment. The carriage 11 is also omitted from the illustration so that the body 6 can be easily seen.

  As shown in FIG. 1, the recording apparatus 1 according to the present exemplary embodiment includes a platen 2, a platen 3, and a platen 4 that are support parts of the recording medium P from a set unit 14 of the recording medium P (medium). Thus, the recording medium P is conveyed in the conveying direction A to the winding unit 15 of the recording medium P. That is, the set unit 14 to the winding unit 15 are transport paths of the recording medium P in the recording apparatus 1, and the platen 2, the platen 3, and the platen 4 are support parts of the recording medium P provided in the transport path. is there. The set unit 14 rotates in the rotation direction C to send out the recording medium P, and the winding unit 15 rotates in the rotation direction C to wind up the recording medium P.

In this embodiment, since the roll type recording medium P wound so that the recording surface 16 is on the outer side is used, when the recording medium P is sent from the setting section 14, the setting section 14 The rotation shaft rotates in the rotation direction C. On the other hand, when using a roll-type recording medium P wound so that the recording surface 16 is on the inner side, the rotating shaft of the set unit 14 can be sent out in the reverse direction to the rotation direction C. is there.
Similarly, the winding unit 15 of the present embodiment winds the recording surface 16 of the recording medium P so that the recording surface 16 is on the outer side, so that the rotation shaft of the winding unit 15 rotates in the rotation direction C. On the other hand, when winding so that the recording surface 16 is on the inner side, the rotating shaft of the winding unit 15 can be wound in the reverse direction of the rotation direction C.

  The recording apparatus 1 of the present embodiment has a configuration capable of recording on a roll-shaped recording medium P. However, the recording apparatus 1 is not limited to such a configuration, and recording is performed on a single-sheet recording medium P. The structure which can perform is also sufficient. When the recording medium P has a configuration capable of recording on a single-sheet recording medium P, for example, a so-called sheet feeding (feeding) tray and sheet feeding (feeding) cassette may be used as the set unit 14 for the recording medium P. You may use what is called. Further, as the collecting unit for the recording medium P, as a collecting unit other than the winding unit 15, for example, a so-called discharge receiving unit, a paper discharge (discharge) tray, a paper discharge (discharge) cassette, or the like is used. May be.

Further, the recording apparatus 1 of the present embodiment has a recording medium P that is a surface opposite to the recording surface 16 having a rotation axis in the intersecting direction B intersecting the transport direction A between the platen 2 and the platen 3. A driving roller 5 for applying a feeding force to the surface 17 is provided.
A driven roller 7 having a rotation axis in the cross direction B is provided on the side of the transport path of the recording medium P facing the driving roller 5. Then, the recording medium P can be held between the driving roller 5 and the driven roller 7 constituting the roller pair. With such a configuration, the conveyance unit 9 is configured by the driving roller 5 and the driven roller 7. Here, the driven roller means a roller that rotates as the recording medium P is conveyed.
When the recording medium P is transported in the transport direction A, the driving roller 5 rotates in the rotation direction C, and the driven roller 7 rotates in the direction opposite to the rotation direction C.

  Further, the recording apparatus 1 of this embodiment is provided with a recording head 12 as a recording unit on the side facing the platen 3. The recording apparatus 1 forms a desired image by ejecting ink from the nozzle formation surface F of the recording head 12 to the recording medium P while reciprocating the recording head 12 in the intersecting direction B via the carriage 11. With such a configuration, the recording head 12 can eject ink onto the recording medium P.

The recording apparatus 1 according to the present exemplary embodiment includes the recording head 12 that performs recording while reciprocating. However, the recording apparatus 1 includes a so-called line head in which a plurality of nozzles that eject ink are provided in the intersecting direction B that intersects the transport direction A. A recording device may be used.
Here, the “line head” is provided so that the nozzle area formed in the cross direction B intersecting the transport direction A of the recording medium P can cover the entire cross direction B of the recording medium P. The recording head is used in a recording apparatus that forms an image by relatively moving the recording head or the recording medium P. Note that the nozzle area in the cross direction B of the line head may not be able to cover the entire cross direction B of all the recording media P supported by the printing apparatus.
The recording head 12 of the present embodiment is a recording unit that can record by ejecting ink as a liquid onto the recording medium P. However, the recording head 12 is not limited to such a recording unit. A transfer-type recording unit that transfers and records on the recording medium P may be used.

The carriage 11 is provided with a sensor 8 that can detect both ends of the recording medium P in the cross direction B.
As described above, the carriage 11 as the moving body that moves together with the recording head 12 in the intersecting direction B is provided with the sensor 8 as a detection unit that can detect the conveyance direction of the recording medium P by the conveyance unit 9. The end of the recording medium P in the cross direction B can be easily detected. For this reason, it is possible to detect the skew feeding without detecting the leading edge and the trailing edge of the recording medium P in the conveyance direction A. Therefore, the recording apparatus 1 of the present embodiment uses a continuous medium such as a roll-shaped recording medium P as a medium by adjusting the transport direction by a rotating body 6 described later based on the detection result of the sensor 8. Even in such a case, the skew feeding of the recording medium P can be suppressed.

  Further, the recording apparatus 1 of the present embodiment includes a rotating body 6 that is a roller having a rotation axis in the intersecting direction B on the downstream side of the recording head 12 in the transport direction A in the transport path of the recording medium P. The rotating body 6 is disposed at a position between the platen 3 and the platen 4 and in contact with a surface 17 on the recording medium P opposite to the recording surface 16 on which recording is performed by the recording head 12. ing.

Here, the rotating body 6 will be described in detail.
FIG. 3 is a schematic diagram of a rotating body 6 that is a main part of the recording apparatus 1 of the present embodiment.
The rotating body 6 of this embodiment is a cylindrical roller, and the circumferential surface thereof is divided into three regions R1, R2, and R3 as regions that can contact the recording medium P. Then, the recording apparatus 1 of the present embodiment rotates the rotating body 6 in the rotation direction C to change the position of the circumferential surface, whereby the surface 17 of the recording medium P and any one of the regions R1, R2, and R3. Can be contacted.
Here, FIG. 3 (A) represents a region R1 as the contactable region of the rotating body 6, and FIG. 3 (B) represents a region R2 as the contactable region of the rotating body 6. 3 (C) represents a region R3 as the contactable region of the rotating body 6.
3 is a direction corresponding to the intersecting direction B when the rotating body 6 is attached to the recording apparatus 1. The left-right direction (the longitudinal direction of the rotating body 6) in FIG.

  As shown in FIG. 3A, the region R1 is composed of one region 6b. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R1, a frictional force is equally applied in the left-right direction in the drawing.

Further, as shown in FIG. 3B, the region R2 is composed of two regions 6a and 6b. Here, the region 6a is configured to have a higher friction coefficient with respect to the recording medium P than the region 6b. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R2, a large frictional force is applied to the right side in the horizontal direction in the drawing.
The method of configuring the region 6a so that the friction coefficient with respect to the recording medium P is higher than that of the region 6b is not particularly limited. In addition to the method of configuring the regions 6a and 6b with different materials, the regions 6a and 6b are finely divided. It can be configured by a method of providing unevenness and making the unevenness density different between the region 6a and the region 6b.

  As shown in FIG. 3C, the region R3 is also composed of two regions 6a and 6b, similar to the region R2. Here, since the region 6a is configured to have a higher coefficient of friction with respect to the recording medium P than the region 6b, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R3, the region R2 Contrary to the case of contact, a large frictional force is applied to the left side in the left-right direction in the figure.

As described above, the rotating body 6 of the present embodiment has the contactable region R2 in which the coefficient of friction with respect to the recording medium P increases from one side to the other side in the cross direction B and from the one side to the other side. A contactable region R3 having a small friction coefficient with respect to the medium is provided. In addition, since the rotation axis is in the cross direction B, the contact area that is brought into contact with the recording medium P by rotating in the rotation direction C can be easily changed to any of the areas R1, R2, and R3. The recording surface 16 of the recording medium P is not damaged by being provided at a position in contact with the surface 17 opposite to the recording surface 16 of the recording medium P.
Here, in the above description, the correspondence relationship between the one side and the other side and the contactable regions R2 and R3 may be reversed.

Next, the electrical configuration of the recording apparatus 1 of the present embodiment will be described.
FIG. 4 is a block diagram of the recording apparatus 1 of the present embodiment.
The control unit 23 is provided with a CPU 24 that controls the entire recording apparatus 1. The CPU 24 is connected via a system bus 25 to a ROM 26 that stores various control programs executed by the CPU 24 and a RAM 27 that can temporarily store data.

The CPU 24 is connected to a head driving unit 28 for driving the recording head 12 via the system bus 25.
The CPU 24 also has a carriage motor 30 for moving the carriage 11 via the system bus 25, a feed motor 31 that is a drive source for the set unit 14, a transport motor 32 that is a drive source for the drive roller 5, and a winding unit. 15 is connected to a motor drive unit 29 for driving a take-up motor 33 which is a drive source of 15 and a rotary body drive motor 22 capable of rotating the rotary body 6 in the rotational direction C.
Further, the CPU 24 is connected to the input / output unit 19 via the system bus 25. The input / output unit 19 is the sensor 8, the PC 20 which is an external device for inputting recording data and the like to the recording device 1, and information by the user. Is connected to a touch panel 21 capable of accepting input and displaying information related to the recording apparatus 1.

With this configuration, the control unit 23 according to the present embodiment sets the contact area in the rotating body 6 that contacts the surface 17 opposite to the recording surface 16 of the recording medium P based on the detection result of the sensor 8. Any one of R1, R2 and R3 can be set (changed).
As described above, in the recording apparatus 1 of the present embodiment, the contactable region R2 (R3) in which the friction coefficient with respect to the recording medium P increases from one side to the other side in the cross direction B and the one side to the other side. A contactable region R3 (R2) in which the friction coefficient with respect to the recording medium P becomes smaller toward the recording medium P is provided, and the rotating body 6 that can contact the surface 17 on the opposite side of the recording surface 16 of the recording medium P is provided. Yes. A control unit 23 is provided that controls the rotating body 6 based on the detection result of the sensor 8 to set the contact area of the rotating body 6 with respect to the recording medium P from the areas R1, R2, and R3. For this reason, since the contact area of the rotating body having a different frictional force distribution can be set in accordance with the direction of the oblique conveyance, the oblique conveyance of the recording medium P can be performed without damaging the recording surface 16 of the recording medium P. It is the structure which can be suppressed.
In addition, although the rotary body 6 of a present Example is provided between the platen 3 and the platen 4, there is no limitation in particular in the position in which the rotary body 6 is provided. However, like the recording apparatus 1 of the present embodiment, it is preferable that the contact area between the rotating body 6 and the recording medium P is provided at a position where it is as wide as possible.

Note that, as described above, the rotating body 6 of this embodiment has the contactable region R2 (R3) in which the friction coefficient with respect to the recording medium P increases from one side to the other side in the intersecting direction B and from the one side. A contactable region R3 (R2) having a smaller friction coefficient with respect to the recording medium P toward the other side is provided.
However, instead of the rotating body 6 of the present embodiment, the contactable region R2 (R3) in which the contact area with respect to the recording medium P increases from one side to the other side in the crossing direction B and the one side to the other side. Alternatively, a rotating body 6 provided with a contactable region R3 (R2) in which the contact area with the recording medium P decreases toward the recording medium P may be used. Specifically, for example, the rotating body 6 may be configured such that the region 6a is convex with respect to the region 6b in FIG. 3 to form the regions R2 and R3. With such a configuration, only the region 6a is in contact with the recording medium P in the regions R2 and R3, and the region R2 shown in FIG. However, the contact area with respect to the recording medium P becomes larger, and in the region R3 shown in FIG.
Even when the rotator 6 having such a configuration is used, the control unit 23 sets the contact area of the rotator with different frictional force distributions according to the direction of the skew feeding, similarly to the recording apparatus 1 of the present embodiment. Since (change) can be performed, it is possible to suppress the oblique conveyance of the recording medium P without damaging the recording surface 16 of the recording medium P.

Further, the recording apparatus 1 of the present embodiment has three types of contactable areas R1, R2, and R3, but is not limited to such a configuration. For example, it is good also as a structure which provides 4 or more types of contactable area | regions. Further, when the recording medium P is not conveyed obliquely, the control unit 23 prevents the rotating body 6 from coming into contact with the recording medium P when the contactable areas are two types of areas R2 and R3. It is good also as a structure which controls to change the position.
In addition, although the rotary body 6 of a present Example is provided between the platen 3 and the platen 4, there is no limitation in particular in the position in which the rotary body 6 is provided.

Next, in the recording apparatus 1 of the present embodiment, when the skew conveyance occurs, the specific control of the rotating body 6 by the control unit 23, that is, the setting of the contact area with respect to the recording medium P in the rotating body 6 is performed. explain.
FIG. 5 is a schematic plan view showing a peripheral portion of the rotating body 6 which is a main part of the recording apparatus 1 of the present embodiment. Among these, FIG. 5A shows a state in which no skew feeding occurs in the recording apparatus 1 of the present embodiment. FIG. 5B shows a state in which the recording medium P is transported obliquely so as to shift to the left side in the drawing as it proceeds downstream in the transport direction A in the recording apparatus 1 of the present embodiment. Yes. FIG. 5C shows a state in which the recording medium P is transported obliquely so as to shift to the right side in the drawing as it proceeds downstream in the transport direction A in the recording apparatus 1 of the present embodiment. Yes.

Note that the recording apparatus 1 of the present embodiment controls the conveyance operation of the recording medium P in the conveyance direction A under the control of the control unit 23 and the carriage 11 in which the conveyance operation is stopped and the recording head 12 is provided. The ejection operation of ejecting ink from the recording head 12 while moving to B is alternately and repeatedly recorded. That is, the recording apparatus 1 of the present embodiment forms an image while intermittently transporting the recording medium P under the control of the control unit 23.
The sensor 8 of the present embodiment is provided on the carriage 11 and can detect both ends in the intersecting direction B of the recording medium P. Therefore, before and after the transport operation, the discharge operation is performed. It is possible to detect the end of the. For this reason, from the detection position of the end portion before and after the transport operation, the control unit 23 confirms whether or not the recording medium P is skewed and the recording medium P is skewed so as to be shifted to the left side in the drawing. It can be determined whether the recording medium P is being conveyed in a skewed manner so as to be shifted to the right side in the drawing.

Here, as shown in FIG. 5A, in the state where the skew feeding is not generated, the recording apparatus 1 of the present embodiment controls the recording medium on the rotating body 6 under the control of the control unit 23. The contact area with respect to P is set to area R1. Here, the region R1 is configured only by the region 6b. For this reason, in this state, the frictional force applied to the recording medium P is equal to the left and right when viewed from the conveyance direction A, and thus the state where the oblique conveyance is not generated is maintained.
Note that the frictional force in the direction opposite to the conveyance direction A applied to the recording medium P by the region 6b is a weak frictional force Fw.

  As shown in FIG. 5A, the length L1 in the intersecting direction B of the rotating body 6 in the recording apparatus 1 of the present embodiment is the length (width) L2 in the intersecting direction B of the recording medium P. That's it. In other words, the length L1 in the intersecting direction B of the rotator 6 is equal to or longer than the transport length in the intersecting direction B of the recording medium P in the transport path of the recording medium P. For this reason, the rotator 6 can reliably contact the recording medium P in the width direction of the recording medium P, and can effectively suppress the oblique conveyance of the recording medium P. ing.

  On the other hand, as shown in FIG. 5B, in the state where the recording medium P is transported obliquely so as to shift to the left side in the drawing as it proceeds downstream in the transport direction A, this embodiment The recording apparatus 1 sets the contact area of the rotating body 6 with respect to the recording medium P to the area R2 under the control of the control unit 23. Here, the frictional force in the direction opposite to the conveyance direction A applied to the recording medium P by the region 6a becomes a frictional force Fs stronger than the frictional force applied to the recording medium P by the region 6b. For this reason, in this state, the frictional force in the direction opposite to the conveyance direction A applied to the recording medium P is greater on the right side in the drawing than on the left side in the drawing. That is, the recording medium P is more strongly pulled toward the upstream side in the transport direction A on the right side in the drawing than on the left side in the drawing. When such a force is applied to the recording medium P, the left side in the drawing is conveyed by a larger conveyance amount than the right side in the drawing in the carrying operation, and the skew feeding is improved.

  On the contrary, as shown in FIG. 5C, in the state where the recording medium P is transported obliquely so as to shift to the right side in the drawing as it proceeds downstream in the transport direction A, the present embodiment is performed. The recording apparatus 1 in the example sets the contact area of the rotating body 6 with respect to the recording medium P in the area R3 under the control of the control unit 23. For this reason, in this state, the frictional force in the direction opposite to the conveyance direction A applied to the recording medium P is greater on the left side in the drawing than on the right side in the drawing. That is, the recording medium P is applied with a force that is strongly pulled to the upstream side in the transport direction A on the left side in the drawing than on the right side in the drawing. When such a force is applied to the recording medium P, the right side in the drawing is conveyed by a larger conveyance amount than the left side in the drawing in the carrying operation, and the skew feeding is improved.

As described above, the recording apparatus 1 of the present embodiment has a configuration in which the sensor 8 is provided on the carriage 11 provided with the recording head 12. However, it is not limited to such a configuration.
For example, the sensor 8 may be provided upstream of the recording head 12 in the transport direction A. With such a configuration, since the oblique conveyance of the recording medium P can be detected before recording, it is possible to effectively suppress the deterioration of the quality of the image recorded on the recording medium P.

  On the other hand, as in the recording apparatus 1 of the present embodiment, in the configuration including the winding unit 15 that can wind up the recording medium P downstream of the recording head 12 in the transport direction A, the sensor 8 is connected to the recording head 12. Alternatively, it may be configured to be provided on the downstream side in the transport direction A and upstream of the winding unit 15 in the transport direction A. With such a configuration, since the skew feeding can be detected effectively before the recording medium P is wound up, the recording medium P is wound up at an angle in the winding unit 15 or the like. Winding failure can be effectively suppressed.

[Example 2] (FIG. 6)
Next, the recording apparatus of Example 2 will be described in detail with reference to the accompanying drawings.
FIG. 6 is a schematic diagram of a rotating body 6 that is a main part of the recording apparatus 1 of the present embodiment, and corresponds to FIG. 3 of the recording apparatus 1 of the first embodiment. In addition, the structural member which is common in the said Example 1 is shown with the same code | symbol, and abbreviate | omits detailed description.
The recording apparatus 1 of the present embodiment has the same configuration as that of the recording apparatus 1 of the first embodiment except for the configuration of the rotating body 6.

The rotating body 6 of Example 1 is a cylindrical roller, and has a configuration in which regions R1, R2, and R3 as contactable regions are provided on the circumferential surface thereof.
On the other hand, the rotating body 6 of the present embodiment is a triangular prism-shaped rotating body, and has a configuration in which regions R1, R2, and R3 as contactable regions are provided on the side surfaces thereof.

  FIG. 6A shows one side surface of the triangular prism-shaped rotating body 6 as the region R1, and the region R1 is composed of one region 6b. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R1, a frictional force is equally applied in the left-right direction in the drawing.

  FIG. 6B shows one side surface of the triangular prism-shaped rotating body 6 as the region R2, and the region R2 includes two regions 6a and 6b. Here, similarly to the rotating body 6 of Example 1, the region 6a is configured to have a higher coefficient of friction with respect to the recording medium P than the region 6b. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R2, a large frictional force is applied to the right side in the horizontal direction in the drawing.

  FIG. 6C shows one side surface of the triangular prism-shaped rotating body 6 as the region R3, and the region R3 is also composed of two regions 6a and 6b, similarly to the region R2. Here, since the region 6a is configured to have a higher coefficient of friction with respect to the recording medium P than the region 6b, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R3, the region R2 Contrary to the case of contact, a large frictional force is applied to the left side in the left-right direction in the figure.

From the above, the recording apparatus 1 of the present embodiment has the same effect as the recording apparatus 1 of the first embodiment.
In addition, compared with the polygonal column-shaped thing like the rotating body 6 of a present Example, the cylindrical thing like the rotating body 6 of Example 1 has the movement of the rotating body 6 when changing a contact area. There is an advantage that it is smooth and it is difficult to give vibration to the recording medium P.

[Example 3] (FIG. 7)
Next, the recording apparatus of Example 3 will be described in detail with reference to the accompanying drawings.
FIG. 7 is a schematic diagram of the rotating body 6 that is a main part of the recording apparatus 1 of the present embodiment, and corresponds to FIG. 3 of the recording apparatus 1 of the first embodiment. In addition, the structural member which is common in the said Example 1 and 2 is shown with the same code | symbol, and abbreviate | omits detailed description.
The recording apparatus 1 of the present embodiment has the same configuration as that of the recording apparatus 1 of the first embodiment except for the configuration of the rotating body 6.

The rotating body 6 of Example 1 is a cylindrical roller, and has a configuration in which regions R1, R2, and R3 as contactable regions are provided on the circumferential surface thereof. In the regions R2 and R3, the region 6a (region 6b) whose area continuously changes in the longitudinal direction with respect to the region 6b so that the frictional force continuously changes in the longitudinal direction corresponding to the intersecting direction B. In other words, a region having a larger friction coefficient with respect to the recording medium P is provided.
On the other hand, the rotating body 6 of the present embodiment is a cylindrical roller, and the configuration in which the regions R1, R2, and R3 as the contactable regions are provided on the circumferential surface is the same as that of the rotating body 6 of the first embodiment. is there. However, in the regions R2 and R3, regions 6a whose areas are intermittently changed in order in the longitudinal direction are arranged at intervals with respect to the region 6b so that the frictional force is intermittently changed in the longitudinal direction. It is a configuration.

  In the region R1 shown in FIG. 7A, the region R1 is composed of one region 6b, and is the same as the region R1 of the rotating body 6 in the first embodiment. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R1, a frictional force is equally applied in the left-right direction in the drawing.

  The region R2 shown in FIG. 7B is composed of two regions 6a and 6b. Here, similarly to the rotating body 6 of Example 1, the region 6a is configured to have a higher coefficient of friction with respect to the recording medium P than the region 6b. And the area | region of the some area | region 6a becomes large as it goes to the right side in a figure. For this reason, when the recording medium P to be conveyed comes into contact with the rotating body 6 in the region R2, a large frictional force is applied to the right side in the horizontal direction in the drawing.

  In addition, the region R3 represented in FIG. 7C is composed of two regions 6a and 6b, similarly to the region R2. And the area | region of the some area | region 6a becomes large as it goes to the left side in a figure. For this reason, when the recording medium P to be conveyed contacts the rotating body 6 in the region R2, a large frictional force is applied to the left side in the left-right direction in the drawing. As a shape of the plurality of regions 6a, for example, a trapezoid, a rectangle, or an ellipse can be applied. Further, the region 6a may be configured as a collection of minute squares, rectangles, circles, and ellipses. Further, it is also possible to change the number of contacts of the regions 6a where the plurality of regions 6a contact the recording medium P by making the lengths of the plurality of regions 6a different in the rotation direction. Thereby, the conveyance load can be reduced.

  From the above, the recording apparatus 1 of the present embodiment also has the same effect as the recording apparatuses 1 of the first and second embodiments.

Example 4 (FIG. 8)
Next, a recording apparatus of Example 4 will be described in detail with reference to the accompanying drawings.
FIG. 8 is a schematic side view of the recording apparatus 1 of the present embodiment and corresponds to FIG. 1 of the recording apparatus 1 of the first embodiment. In addition, the structural member which is common in the said Examples 1-3 is shown with the same code | symbol, and abbreviate | omits detailed description.
Note that the recording apparatus 1 of the present embodiment includes a tension generating unit 10 that applies tension to the recording medium P conveyed in the conveying direction A in order to improve the winding property of the recording medium P in the winding unit 15. The configuration is the same as that of the recording apparatus 1 of the first embodiment except that the rotating body 6 is provided in the tension generator 10.

The rotating body 6 of Example 1 was provided between the platen 3 and the platen 4.
On the other hand, the rotating body 6 of the present embodiment contacts the surface 17 of the recording medium P in the cross direction B in the tension generation unit 10 that applies tension to the recording medium P conveyed in the conveyance direction A. A possible contact portion 13 is provided. Note that the rotating body 6 of the present embodiment also has the same configuration as the rotating body 6 of the first embodiment.

In other words, in the recording apparatus 1 of the present embodiment, the rotating body having the same configuration as the rotating body 6 of the first embodiment is provided downstream of the recording head 12 in the transport direction A and extends in the intersecting direction B. The contact portion 13 is provided in the tension generating section 10 that contacts the recording medium P at the contact section 13 and applies tension to the recording medium P. For this reason, the tension generating unit 10 also has a function of suppressing the skew feeding, and it is possible to omit the configuration of the rotating body separately from the tension generating unit 10 and to simplify the recording apparatus 1 and reduce the cost. Yes.
The phrase “contact with the recording medium P in the intersecting direction B at the contact portion 13” includes the case where there is a portion that is not partially in contact with the recording medium P in the intersecting direction B.

Example 5 (FIG. 9)
Next, a recording apparatus of Example 5 will be described in detail with reference to the accompanying drawings.
FIG. 9 is a schematic plan view of the recording apparatus 1 of the present embodiment. In addition, the structural member which is common in the said Examples 1-4 is shown with the same code | symbol, and abbreviate | omits detailed description.
The recording apparatus 1 of the present embodiment has the same configuration as that of the recording apparatus 1 of the first embodiment except for the configuration of the sensor 8.

  FIG. 9 is a schematic plan view showing a peripheral portion of the sensor 8 in the recording apparatus 1 of the present embodiment using a sensor different from the sensor of the recording apparatus 1 of the first embodiment. Among these, FIG. 9A is a diagram showing a state in which the recording medium P is conveyed without being obliquely conveyed. On the other hand, FIG. 9B is a diagram illustrating a state in which the recording medium P is transported so as to shift to the left side (sensor 8b side) in the drawing as it proceeds downstream in the transport direction A.

  As shown in FIG. 9, the recording apparatus 1 according to the present embodiment has a sensor 8 a serving as a first speed sensor as a sensor 8 that detects the transport speed of the transported recording medium P, and a transport direction A. And a sensor 8b as a second speed sensor provided at a position different from the sensor 8a in the intersecting direction B intersecting the transport direction A. Then, the control unit 23 can obtain a relative speed difference based on the detection speeds of the sensors 8a and 8b as the skew detection unit, and detect the skew state of the recording medium P from the relative speed difference.

  In this way, for example, the relative speed difference is obtained at different positions in the intersecting direction B, such as the left side and the right side when viewed from the transport direction A of the recording medium P, and the skewed state (skew degree of the transported body is determined from the relative speed difference. ), The absolute speed cannot be detected with high accuracy even when a speed sensor that cannot detect the absolute speed with high accuracy is used as the first speed sensor and the second speed sensor. Can be complemented. That is, the detection accuracy of the skew state of the recording medium P can be increased.

Even when a speed sensor that cannot detect the absolute speed with high accuracy is used as the first speed sensor and the second speed sensor, it can be supplemented that the absolute speed cannot be detected with high accuracy. The reason is as follows.
The control unit 23 calculates the relative speed difference based on the detection speed detected by the sensor 8a and the sensor 8b as follows.
In the recording apparatus 1 of the present embodiment, both the sensor 8a and the sensor 8b are provided so that the position in the intersecting direction B can be changed. Therefore, the user can arrange the distance from the right end of the recording medium P to the sensor 8a in FIG. 9 to be equal to the distance from the left end of the recording medium P to the sensor 8b. . When the sensor 8a and the sensor 8b are arranged in this way, the detection speed of the sensor 8a is V1, and the detection speed of the sensor 8b is V2, the transport speed Vave as the entire recording medium P is Vave = (V1 + V2) / 2. It becomes. The control unit 23 calculates ((V1−V2) / Vave) × 100 (%), and uses this value as a relative speed difference.
In addition, although the control part 23 of a present Example makes ((V1-V2) / Vave) * 100 (%) the relative speed difference, it is good also considering V1-V2 as a relative speed difference.

As described above, the skew state of the recording medium P is determined on the basis of the relative speed difference. Therefore, the configuration such as the recording apparatus 1 of this embodiment uses a speed sensor that cannot detect the absolute speed with high accuracy. Even if it is used, the detection of the skew state of the recording medium P becomes highly accurate.
For example, when the skew state is determined based on the absolute speed of the detection speed V1 of the sensor 8a and the detection speed V2 of the sensor 8b, the detected value of the absolute speed changes depending on the type of the recording medium P and the accurate skew state is determined. There are cases where it is not possible.
On the other hand, according to this embodiment, even if the detection speed V1 of the sensor 8a and the detection speed V2 of the sensor 8b change, the ratio of V1 and V2 to Vave does not change, so ((V1-V2) / Vave) × The value of 100 (%) does not change. For this reason, an accurate skew state can be determined.
Even if the relative speed difference is the same, the conveyance state naturally changes according to the distance between the sensor 8a and the sensor 8b. Therefore, the skew state is determined based on the distance between the sensors 8a and 8b.

Further, in the conventional skew detection in which the leading edge of the recording medium P is detected, the skew detection sensor is not installed at a position where the recording medium P is largely displaced by the skew in the conveyance path of the recording medium P. Effective detection was difficult. On the other hand, the recording apparatus 1 of the present embodiment is configured to convey a recording medium P that is continuous in a so-called roll-to-roll manner from the setting unit 14 to the winding unit 15. For this reason, in any conveyance path of the recording medium P, there is a tendency that the skewing degree when the recording medium P is conveyed obliquely does not greatly differ. For this reason, the relative speed difference (degree of skew) tends to be substantially unchanged at any position in the transport path of the recording medium P. Therefore, the freedom degree of the installation position of the 1st speed sensor 8a and the 2nd speed sensor 8b can be made high.
Even when the recording medium P is not transported continuously in roll to roll, the skew feeding of the recording medium P can be determined by determining the skew feeding based on the relative speed difference of the recording medium P. It is possible to determine the skew feeding with high accuracy by arranging the sensor 8 at a position other than the position where the values accumulate. For this reason, it is impossible to determine the skew state with high accuracy unless the recording medium P is disposed at a position where the skew conveyance is accumulated, and the structure or the recording target for determining the skew state by detecting the absolute speed of the recording medium P. Compared to the configuration in which the leading end of the medium P is detected to determine the skew state, the degree of freedom of the installation position of the sensor 8 can be increased.
In addition, the sensor 8a and the sensor 8b of a present Example are the same structures. However, speed sensors with different configurations may be used.

In the state of FIG. 9A, there is no difference between the conveyance speed of the recording medium P detected by the sensor 8a and the conveyance speed of the recording medium P detected by the sensor 8b. For this reason, the control unit 23 determines that there is no relative speed difference based on the detection speeds of the sensors 8a and 8b.
On the other hand, in the state of FIG. 9B, the transport speed of the recording medium P detected by the sensor 8a and the transport speed of the recording medium P detected by the sensor 8b are detected by the sensor 8a. The conveyance speed of the recording medium P becomes faster. Since the conveyance speed of the recording medium P detected by the sensor 8a is faster, the conveyance amount on the sensor 8a side is larger than that on the sensor 8b side, and shifts toward the sensor 8b side as it proceeds downstream in the conveyance direction A. It is because it is conveyed. For this reason, there is a relative speed difference based on the detection speeds of the sensor 8a and the sensor 8b, and the control unit 23 determines that the sensor 8a side in the cross direction B is faster.

Here, the sensor 8a and the sensor 8b of this embodiment both emit electromagnetic waves (light) to the recording medium P, receive electromagnetic waves reflected from the recording medium P, and record from the frequency change due to the Doppler effect. The conveyance speed of the medium P is obtained.
The speed sensor that determines the conveyance speed of the recording medium P from the frequency change due to the Doppler effect may change the detection speed value (absolute speed value) depending on the type of the recording medium P. This is because if the type of the recording medium P changes, the state of scattered light reflected by the recording medium P may also change. When such a speed sensor obtains the skew state of the recording medium P using the detected speed value as it is, it is difficult to accurately detect the skew state under the influence of the type of the recording medium P. There is a case.
On the other hand, as described above, the recording apparatus 1 according to the present embodiment obtains a relative speed difference based on the detection speeds detected by the sensors 8a and 8b, and detects the skew state of the recording medium P from the relative speed difference. Therefore, the change amount of the detection speed detected by the sensor 8a and the sensor 8b due to the difference in the type of the recording medium P can be canceled out, so that the skew state can be detected with high accuracy.
Both the sensor 8a and the sensor 8b of this embodiment are configured to emit an electromagnetic wave to the recording medium P and receive an electromagnetic wave reflected from the recording medium P. However, the sensor 8a and the sensor 8b emit a sound wave to the recording medium P. It is also possible to receive a sound wave reflected from the recording medium P.

Here, a preferred specific example of a speed sensor capable of obtaining the conveyance speed of the recording medium P from the frequency change due to the Doppler effect will be described.
As a first example, two irradiation lights are emitted from the upstream side and the downstream side in the conveyance direction A of the recording medium P, and reflected light (scattered light) from the recording medium P based on the respective irradiation lights. Is received by the same light receiving unit. The scattered light includes velocity information in the conveyance direction A of the recording medium P in the form of a change in the wavelength of the light, and the scattered light derived from the upstream irradiation light has a longer wavelength and the downstream irradiation. Scattered light derived from light has a shorter wavelength. Accordingly, the conveyance speed of the recording medium P can be obtained by detecting the wavelength by heterodyne detection of the wavelength difference between these two wavelengths.
As a second example, scattered light (returned light) whose wavelength has been changed by irradiating the recording medium P moving in the transport direction A from the laser and being reflected by the recording medium P is reflected by the laser. It is the structure which receives light. When the return light returns to the laser, the output of the laser slightly increases when the irradiation light and the return light are in phase, but the increase speed is used to determine the transport speed of the recording medium P. Can do.
Note that the sensor 8a and the sensor 8b of the present embodiment have the configuration of the first example.

  Further, a sensor different from the above sensor can be used. As a sensor further different from the above sensor, for example, the end of the recording medium P can be detected by using a motion sensor including a plurality of light emitting units and one light receiving unit.

[Example of Recording Method] (FIG. 10)
Next, a recording method according to an embodiment will be described with reference to FIG.
Note that the recording method of the present embodiment is an example of a recording method executed using the recording apparatus 1 of the first embodiment. However, the recording apparatus 1 according to the second to fourth embodiments can be used in the same manner as the recording method according to the present embodiment.

  When recording data is input from the PC 20 and the recording method of the present embodiment is started, first, in step S110, under the control of the control unit 23, the end portions on both sides of the recording medium P in the crossing direction B are controlled by the sensor 8. The position of is detected.

  Next, in step S120, the recording medium P is conveyed to a predetermined position. Note that the conveyance of the recording medium P in this step corresponds to the conveyance of the recording medium P to the recording start position or one conveyance in the intermittent conveyance.

  Then, after the conveyance of the recording medium P in step S120 is completed, the positions of the end portions on both sides of the recording medium P in the intersecting direction B are detected by the sensor 8 under the control of the control unit 23 in step S130.

Next, in step S140, the control unit 23 causes the recording medium P to be inclined based on the detection results of the positions of the end portions on both sides of the recording medium P in the intersecting direction B by the sensor 8 before and after transporting the medium in step S120. Determine if the line is being conveyed.
If it is determined in this step that the recording medium P is not conveyed obliquely, the process proceeds to step S150. If it is determined that the recording medium P is conveyed obliquely in this step, the process proceeds to step S160.

  In step S150, the control unit 23 controls the rotating body 6 so that the contact area of the rotating body 6 with respect to the recording medium P is set to the area R1 from the areas R1, R2, and R3 that are the contactable areas.

On the other hand, in step S160, the control unit 23 sets the contact area of the rotator 6 with respect to the recording medium P to the area R2 or R3 from the areas R1, R2, and R3 that are the contactable areas. To control.
In detail, as shown in FIG. 5B, in a state where the recording medium P is being conveyed obliquely so as to be shifted to the left side in the drawing as it proceeds downstream in the conveyance direction A, The recording apparatus 1 of the present embodiment sets the contact area to the area R2. Then, as shown in FIG. 5C, in the state where the recording medium P is being transported obliquely so as to be shifted to the right side in the drawing as it proceeds downstream in the transport direction A, The recording apparatus 1 sets the contact area to the area R3.

Then, after step S150 or step S160 ends, in step S170, the control unit 23 performs recording based on the recording data input from the PC 20, and determines whether recording based on the recording data has ended.
If it is determined in this step that the recording has been completed, the recording method of this embodiment is terminated. On the other hand, if it is determined in this step that the recording has not ended, the process returns to step S120 and is repeated from step S120 to step S170.
In this embodiment, the rotating body 6 is moved when the recording medium P is stopped when the recording medium P is intermittently transported in step S160. However, the recording medium when the recording medium P is intermittently transported is moved. The rotating body 6 may be moved when the medium P is moved or when the recording medium P is moved when the recording medium P is continuously conveyed.

  Like the recording method of the present embodiment, the contactable region R2 (R3) where the friction coefficient with respect to the recording medium P increases from one side to the other side in the cross direction B and from the one side to the other side. A contactable region R3 (R2) having a small friction coefficient with respect to the recording medium P is provided, and a contact region of the rotating body 6 that can contact the surface 17 opposite to the recording surface 16 of the recording medium P is detected. By setting the region R1 to R3 based on the detection result of the unit 8, conveying the recording medium P and recording it on the medium P, the recording surface 16 of the recording medium P is not damaged. Recording can be performed while suppressing the oblique conveyance of the recording medium P.

  Further, a contactable region R2 (R3) where the contact area with respect to the recording medium P increases from one side to the other side in the cross direction B and the contact area with respect to the recording medium P from the one side toward the other side. Based on the detection result of the detection unit 8, the contact area of the rotating body 6 that is provided with a small contactable area R3 (R2) and can contact the surface 17 on the opposite side of the recording surface 16 of the recording medium P is detected. It is also possible to set the area R2 and the area R3 and the area R1 in which the contact area with respect to the recording medium P does not change from the one side toward the other side, convey the recording medium P, and record on the medium P. Thus, the recording medium P can be recorded while suppressing the oblique conveyance without damaging the recording surface 16 of the recording medium P.

In addition, this invention is not limited to the said Example, A various deformation | transformation is possible within the range of the invention described in the claim, and it cannot be overemphasized that they are also contained in the scope of the present invention.
The present invention has been described in detail based on the specific embodiments. Here, the present invention will be described once more collectively.

  The recording apparatus 1 according to the first aspect of the present invention is transported by a transport unit 9 that can transport the medium P, a detection unit 8 that can detect the transport direction A of the medium P by the transport unit 9, and the transport unit 9. The recording unit 12 capable of recording on the medium P, the contactable region R2 (R3) in which the coefficient of friction with respect to the medium P increases from one side to the other side in the intersecting direction B intersecting the transport direction A, and the one side from the one side. A contactable region R3 (R2) in which the friction coefficient with respect to the medium P becomes smaller toward the other side is provided, and can be brought into contact with the surface 17 opposite to the recording surface 16 on which recording is performed by the recording unit 12 on the medium P. A rotating body 6 having a rotation axis in the intersecting direction B, and a control unit 23 that controls the rotating body 6 and sets a contact area of the rotating body 6 with respect to the medium P based on the detection result of the detection unit 8. It is characterized by that.

According to this aspect, the contactable region R2 (R3) where the friction coefficient with respect to the medium P increases from one side to the other side in the cross direction B and the friction coefficient with respect to the medium P from the one side toward the other side. A smaller contactable region R3 (R2) is provided, and a rotating body 6 that can contact the surface 17 of the medium P opposite to the recording surface 16 is provided. And the control part 23 which controls the rotary body 6 based on the detection result of the detection part 8 and sets the contact area | region of the rotary body 6 with respect to the medium P is provided. For this reason, since the contact area of the rotating body 6 having a different frictional force distribution can be set in accordance with the direction of the oblique conveyance, the oblique conveyance of the medium P can be suppressed without damaging the recording surface 16 of the medium P. Can do.
Note that “the conveyance direction A can be detected” means, for example, that the position of the end of the medium P in the intersecting direction B intersecting the conveyance direction A is detected or the conveyance speed of the medium P is detected. This means that the conveyance direction A can be detected.

  The recording apparatus 1 according to the second aspect of the present invention is transported by the transport unit 9 that can transport the medium P, the detection unit 8 that can detect the transport direction A of the medium P by the transport unit 9, and the transport unit 9. The recording unit 12 capable of recording on the medium P, the contactable region R2 (R3) in which the contact area with respect to the medium P increases from one side to the other side in the intersecting direction B intersecting the transport direction A, and the one side from the one side. A contactable region R3 (R2) that has a smaller contact area with the medium P toward the other side is provided, and can be in contact with the surface 17 on the opposite side of the recording surface 16 on which the recording is performed by the recording unit 12 on the medium P. A rotating body 6 having a rotation axis in the intersecting direction B, and a control unit 23 that controls the rotating body 6 and sets a contact area of the rotating body 6 with respect to the medium P based on the detection result of the detection unit 8. It is characterized by that.

  According to this aspect, the contact area R2 (R3) in which the contact area with the medium P increases from one side to the other side in the cross direction B and the contact area with the medium P from the one side to the other side. A smaller contactable region R3 (R2) is provided, and a rotating body 6 that can contact the surface 17 of the medium P opposite to the recording surface 16 is provided. And the control part 23 which controls the rotary body 6 based on the detection result of the detection part 8 and sets the contact area | region of the rotary body 6 with respect to the medium P is provided. For this reason, since the contact area of the rotating body 6 having a different frictional force distribution can be set in accordance with the direction of the oblique conveyance, the oblique conveyance of the medium P can be suppressed without damaging the recording surface 16 of the medium P. Can do.

  The recording apparatus 1 according to the third aspect of the present invention includes the moving body 11 that moves together with the recording unit 12 in the intersecting direction B in the first or second aspect, and the detection unit 8 is provided in the moving body 11. It is characterized by.

  According to this aspect, the detection unit 8 is provided on the moving body 11 that moves together with the recording unit 12 in the intersecting direction B. For this reason, since the detection unit 8 can easily detect the end of the medium P in the cross direction B, even when a continuous medium such as a roll-shaped medium P is used as the medium P, the skew feeding of the medium P is suppressed. can do.

  The recording apparatus 1 according to a fourth aspect of the present invention is characterized in that, in the first or second aspect, the detection unit 8 is provided upstream of the recording unit 12 in the transport direction A.

  According to this aspect, the detection unit 8 is provided upstream of the recording unit 12 in the transport direction A. For this reason, since skew feeding can be detected before recording, it is possible to effectively suppress degradation of the quality of the image recorded on the medium P.

  The recording apparatus 1 according to the fifth aspect of the present invention includes, in the first or second aspect, the winding unit 15 provided on the downstream side in the transport direction A from the recording unit 12 and capable of winding the medium P. The detection unit 8 is provided downstream of the recording unit 12 in the transport direction A and upstream of the winding unit 15 in the transport direction A.

  According to this aspect, the detection unit 8 is provided downstream of the recording unit 12 in the conveyance direction A and upstream of the winding unit 15 in the conveyance direction A. For this reason, since the skew feeding can be detected effectively before the medium P is wound, the winding failure of the medium P such as the medium P being wound obliquely can be effectively suppressed.

  In the recording apparatus 1 according to the sixth aspect of the present invention, in any one of the first to fifth aspects, the length L1 of the rotating body 6 in the intersecting direction B is the intersection of the medium P in the transport path of the medium P. It is more than the conveyance length of the direction B, It is characterized by the above-mentioned.

Here, “the transport length in the cross direction B of the medium P in the transport path of the medium P” means the maximum length in the cross direction B of the medium P that is supposed to be used.
According to this aspect, the length L1 of the rotating body 6 in the intersecting direction B is equal to or longer than the transport length of the medium P in the intersecting direction B in the transport path of the medium P, that is, the length of the medium P in the intersecting direction B. L2 or more. For this reason, the rotating body 6 can surely contact the medium P in the width direction of the medium P, and the oblique conveyance of the medium P can be effectively suppressed.

  In any one of the first to sixth aspects, the recording apparatus 1 according to the seventh aspect of the present invention is provided on the downstream side in the transport direction A from the recording unit 12, and the medium P extends in the intersecting direction B. The tension generating unit 10 that applies tension to the medium P by contacting with the contact unit 13 is provided, and the rotating body 6 is provided in the contact unit 13.

According to this aspect, the rotator 6 is provided downstream of the recording unit 12 in the transport direction A and contacts the medium P in the crossing direction B at the contact unit 13 to apply tension to the medium P. The tension generator 10 is provided at the contact portion 13. For this reason, it is possible to omit the rotation body 6 from being provided separately from the tension generation unit 10 by having the tension generation unit 10 also serve as a skew feeding suppression function.
The phrase “contact with the medium P in the intersecting direction B at the contact portion 13” means that there is a case where there is a portion that is not partially in contact with the medium P in the intersecting direction B.

  The recording method according to the eighth aspect of the present invention includes a transport unit 9 capable of transporting the medium P, a detection unit 8 capable of detecting a transport direction A of the medium P by the transport unit 9, and a medium transported by the transport unit 9. A recording method in a recording apparatus 1 including a recording unit 12 capable of recording on P, and a contact with which a coefficient of friction with respect to the medium P increases from one side to the other side in an intersecting direction B intersecting the transport direction A is possible. An area R2 (R3) and a contactable area R3 (R2) where the coefficient of friction with respect to the medium P decreases from the one side toward the other side are provided, and the recording surface 16 on which the recording is performed by the recording unit 12 on the medium P. A contact area of the rotating body 6 having a rotation axis in the intersecting direction B that can contact the surface 17 on the opposite side is set based on the detection result of the detection unit 8, and the medium P is conveyed to the medium P Features to record To.

  According to this aspect, the contactable region R2 (R3) where the friction coefficient with respect to the medium P increases from one side to the other side in the cross direction B and the friction coefficient with respect to the medium P from the one side toward the other side. A contactable region R3 (R2) that is smaller is provided, and a contact region of the rotating body 6 that can contact the surface 17 of the medium P opposite to the recording surface 16 is set based on the detection result of the detection unit 8. Then, the medium P is conveyed and recorded on the medium P. Therefore, it is possible to perform recording while suppressing the oblique conveyance of the medium P without damaging the recording surface 16 of the medium P.

  The recording method according to the ninth aspect of the present invention includes a transport unit 9 capable of transporting the medium P, a detection unit 8 capable of detecting the transport direction A of the medium P by the transport unit 9, and a medium transported by the transport unit 9. A recording method in a recording apparatus 1 including a recording unit 12 capable of recording on P, and a contact is possible in which the contact area with respect to the medium P increases from one side to the other side in an intersecting direction B intersecting the transport direction A. An area R2 (R3) and a contactable area R3 (R2) in which the contact area with respect to the medium P decreases from the one side toward the other side are provided, and the recording surface 16 on which recording is performed by the recording unit 12 on the medium P. A contact area of the rotating body 6 having a rotation axis in the intersecting direction B that can contact the surface 17 on the opposite side is set based on the detection result of the detection unit 8, and the medium P is conveyed to the medium P Features to record To.

  According to this aspect, the contact area R2 (R3) in which the contact area with the medium P increases from one side to the other side in the cross direction B and the contact area with the medium P from the one side to the other side. A contactable region R3 (R2) that is smaller is provided, and a contact region of the rotating body 6 that can contact the surface 17 of the medium P opposite to the recording surface 16 is set based on the detection result of the detection unit 8. Then, the medium P is conveyed and recorded on the medium P. Therefore, it is possible to perform recording while suppressing the oblique conveyance of the medium P without damaging the recording surface 16 of the medium P.

1 recording device, 2 platen, 3 platen, 4 platen,
5 driving roller, 6 rotating body, 7 driven roller, 8 sensor (detection unit),
9 Conveying section, 10 Tension generating section, 11 Carriage (moving body),
12 recording head (recording section), 13 contact section, 14 set section, 15 winding section,
16 recording surface of the recording medium P, 17 surface opposite to the recording surface of the recording medium P,
19 Input / output unit, 20 PC, 21 Touch panel, 22 Rotating body drive motor,
23 control unit, 24 CPU, 25 system bus, 26 ROM, 27 RAM,
28 head drive unit, 29 motor drive unit, 30 carriage motor,
31 Sending motor, 32 Conveying motor, 33 Winding motor, F Nozzle forming surface,
L1 The length of the rotating body 6 in the cross direction B, L2 The length of the recording medium P in the cross direction B,
P Recording medium (medium)

Claims (9)

A transport unit capable of transporting a medium;
A detection unit capable of detecting a conveyance direction of the medium by the conveyance unit;
A recording unit capable of recording on the medium conveyed by the conveyance unit;
A contactable region in which the friction coefficient with respect to the medium on the other side is increased with respect to one side in a crossing direction intersecting the transport direction, and a contactable region with a friction coefficient with respect to the medium on the other side is decreased with respect to the one side. A rotating body having a rotation axis in the intersecting direction, which can contact a surface of the medium opposite to a recording surface on which recording is performed by the recording unit;
A control unit that controls the rotating body to change a contact area of the rotating body with respect to the medium based on a detection result of the detecting unit;
A recording apparatus comprising: A transport unit capable of transporting a medium;
A detection unit capable of detecting a conveyance direction of the medium by the conveyance unit;
A recording unit capable of recording on the medium conveyed by the conveyance unit;
A contactable region in which the contact area with respect to the medium on the other side increases with respect to one side in the crossing direction intersecting the transport direction, and a contactable region with a contact area with respect to the medium on the other side that decreases with respect to the one side. A rotating body having a rotation axis in the intersecting direction, which can contact a surface of the medium opposite to a recording surface on which recording is performed by the recording unit;
A control unit that controls the rotating body to change a contact area of the rotating body with respect to the medium based on a detection result of the detecting unit;
A recording apparatus comprising: The recording apparatus according to claim 1 or 2,
A moving body that moves together with the recording unit in the crossing direction;
The recording apparatus, wherein the detection unit is provided in the moving body. The recording apparatus according to claim 1 or 2,
The recording apparatus, wherein the detection unit is provided upstream of the recording unit in the transport direction. The recording apparatus according to claim 1 or 2,
Provided on the downstream side in the transport direction from the recording unit, comprising a winding unit capable of winding the medium,
The recording apparatus according to claim 1, wherein the detection unit is provided downstream of the recording unit in the transport direction and upstream of the winding unit in the transport direction. The recording apparatus according to any one of claims 1 to 5,
The length of the rotating body in the intersecting direction is greater than or equal to the transport length of the medium in the intersecting direction in the medium transport path. The recording apparatus according to any one of claims 1 to 6,
A tension generation unit that is provided downstream of the recording unit in the transport direction, contacts the medium at the contact unit over the intersecting direction, and applies tension to the medium;
The recording apparatus according to claim 1, wherein the rotating body is provided in the contact portion. A recording method in a recording apparatus, comprising: a conveyance unit capable of conveying a medium; a detection unit capable of detecting a conveyance direction of the medium by the conveyance unit; and a recording unit capable of recording on the medium conveyed by the conveyance unit. Because
A contactable region in which the friction coefficient with respect to the medium on the other side is increased with respect to one side in a crossing direction intersecting the transport direction, and a contactable region with a friction coefficient with respect to the medium on the other side is decreased with respect to the one side. The detection result of the detection unit is a contact area of the rotating body having the rotation axis in the intersecting direction that can contact the surface of the medium opposite to the recording surface on which recording is performed by the recording unit. The recording method is characterized in that the medium is conveyed and recorded on the medium. A recording method in a recording apparatus, comprising: a conveyance unit capable of conveying a medium; a detection unit capable of detecting a conveyance direction of the medium by the conveyance unit; and a recording unit capable of recording on the medium conveyed by the conveyance unit. Because
A contactable region in which the contact area with respect to the medium on the other side increases with respect to one side in the crossing direction intersecting the transport direction, and a contactable region with a contact area with respect to the medium on the other side that decreases with respect to the one side. The detection result of the detection unit is a contact area of the rotating body having the rotation axis in the intersecting direction that can contact the surface of the medium opposite to the recording surface on which recording is performed by the recording unit. The recording method is characterized in that the medium is conveyed and recorded on the medium.

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