JP5157808B2 - Inkjet printing device - Google Patents

Description

  The present invention relates to an ink jet printing apparatus for printing a cloth by ejecting ink from an ink jet recording head.

  Conventionally, a screen printing apparatus using a dyeing die has been used for printing on cotton, silk, wool, chemical fiber, blended fabric, etc. In recent years, due to improvements in the technology of ink jet printers, printing by an ink jet method has been used. Inkjet textile printing apparatuses that perform printing have attracted attention.

  Ink-jet printing does not require the dye used in screen printing, and a digitized design can be used. Therefore, it is possible to quickly respond to a fine design change according to the customer's request, and to greatly reduce the production time. In addition, there is an advantage that the degree of freedom in design is large, such as being able to express color gradation.

  In an ink jet textile printing apparatus, when transporting a cloth as a recording medium to a printing section that performs ink jet textile printing, the cloth is attached to a transport belt having adhesiveness on the surface in order to improve the transport accuracy. The belt is driven by a conveying roller or the like to convey the cloth.

  However, when a cloth is attached to the conveyance belt having adhesiveness on the surface, air bubbles may enter between the conveyance belt and the cloth, and the cloth may partially float from the conveyance belt.

  When the cloth is lifted by such bubbles and the cloth is transported below the printing section, the floating cloth contacts the recording head of the printing section and stains the cloth. May break. In addition, when printing is performed on a fabric in which bubbles are floated, there is a problem that the quality of the printed image is deteriorated. In particular, when a wide cloth is used, it is more difficult to uniformly apply the cloth to the transport belt, and these problems are remarkable.

In order to apply the cloth evenly to the conveyor belt, in the conventional ink jet printing apparatus 31, as shown in FIG. An affixing roller 32 provided to press the cloth with an urging force was provided (Patent Document 1).
JP-A-7-214766

  However, in such a configuration, when the cloth floats over a wide range due to large air bubbles, the cloth is squeezed between the sticking roller and the transport roller and stuck to the transport belt in a wrinkled state. There is a risk of being attached.

  An object of the present invention is to attach a cloth onto a conveyance belt having adhesiveness on the surface, and to convey a cloth between the conveyance belt and the cloth when the cloth is conveyed below the printing unit. An object of the present invention is to provide an ink-jet printing apparatus capable of performing printing with high image quality by causing the float to adhere evenly by uniformly dispersing the bubbles.

  In order to solve the above problems, the invention of the ink jet printing apparatus according to the first aspect of the present invention includes a printing unit that discharges ink from a recording head to print on a recording medium, and a conveyance belt that has adhesiveness on the surface. And a recording medium floating prevention means provided on the upstream side of the printing unit, and the recording medium floating prevention means is placed on the recording medium that is adhesively supported by the conveyance belt, and the conveyance belt And a free roller configured to be movable in a direction opposite to the transport direction.

  The free roller provided as the recording medium floating prevention means is placed on a cloth that is a recording medium that is adhesively supported on the transport belt, and the shaft of the free roller is not fixed. The cloth and the conveyor belt are arranged in a state where only the weight of the free roller is applied. That is, the free roller is configured to be freely movable in the transport direction of the transport belt and in the opposite direction. Therefore, when the conveyance belt of the recording medium conveyance unit is driven, the free roller can freely roll on the conveyance belt in the belt conveyance direction and in the opposite direction. And since the axis | shaft of the said free roller is not being fixed as mentioned above, the rolling motion is not regular.

  According to this aspect, the cloth formed by air bubbles entering between the conveyance belt and the cloth due to the “irregular movement (rolling)” of the free roller on the conveyance belt on the upstream side of the printing unit. The floats can be evenly dispersed without causing wrinkles and adhered to the conveyor belt evenly. The “irregular movement” of the free roller will be described in detail below.

  As in the conventional example, the cloth 2 is squeezed between the conveyor belt 7 as shown in FIG. 11 with the sticking roller 32 having a fixed shaft and pressed with a predetermined urging force. Therefore, since excessive force is applied to the cloth 2, it is easy to make wrinkles.

  In the present invention, the free roller is freely movable as described above. For this reason, when the free roller rolls up and the fabric is swelled by pushing the air bubbles between the transport belt and the fabric, the free roller is repelled by the swell and rolls in a direction without swell. After that, when the free roller hits the swell of the fabric again, the free roller is bounced and rolled again. By repeating such an “irregular movement” of the free roller, the air bubbles between the transport belt and the cloth are evenly distributed uniformly and can be flattened without wrinkling the cloth.

  For example, when one free roller is used, the free roller is set to be longer than the width of the recording medium and configured to disperse the bubbles on the entire surface of the recording medium. preferable. In addition, large bubbles that collide with the recording head of the printing unit are relatively less likely to occur, and when printing is not performed on the entire surface of the recording medium, only bubbles generated in the printing range are dispersed and uniformed. It is also possible to set the free roller short and to limit the range in the width direction in which the free roller rolls.

  Here, in the ink jet textile printing apparatus according to the aspect, it is preferable that a plurality of the free rollers are arranged side by side in the conveyance direction of the conveyance belt.

  According to this, since the plurality of free rollers roll on the recording medium while performing the above-mentioned “irregular movement” independently, the recording medium conveys bubbles between the conveyance belt and the recording medium. Can be reliably dispersed and flattened while being done.

  According to a second aspect of the present invention, there is provided the inkjet printing apparatus according to the first aspect, wherein a plurality of the free rollers are arranged in the transport direction of the transport belt, and the plurality of free rollers have a roller diameter. , And is set to increase as it goes from the upstream side to the downstream side in the conveyance direction of the conveyance belt.

  If the air bubbles formed between the cloth serving as the recording medium and the conveying belt are large, if the free roller with a large roller diameter and a heavy roller rolls over the large air bubbles, there is a risk that wrinkles may be formed on the cloth.

  According to this aspect, in addition to the same effects as in the first aspect, the large air bubbles are reduced to some extent by the smallest free light roller on the upstream side in the conveying direction of the conveying belt without wrinkling the cloth. can do. And as the roller diameter of the free roller is set larger toward the downstream side, a heavier free roller larger than the small diameter free roller is allowed to act on the air bubbles slightly reduced by the small diameter free roller. Air bubbles can be dispersed. In this way, by applying a large free roller in a stepwise manner from the upstream side to the downstream side in the conveyance direction of the conveyance belt, a large bubble is easily formed between the conveyance belt and the fabric. The bubbles can be uniformly dispersed and flattened without forming a fold.

  According to a third aspect of the present invention, there is provided an ink jet textile printing apparatus according to the first aspect, wherein the conveyor belt is intermittently driven.

  According to this aspect, in addition to the same effects as in the first aspect, the free roller easily moves due to the reaction in which the conveyance belt is intermittently driven. Therefore, the air bubbles between the recording medium and the conveyance belt are efficiently leveled. The recording medium on the conveyor belt can be flattened.

  The invention of the ink jet textile printing apparatus according to the fourth aspect of the present invention comprises a movement restricting member for restricting the movement range of the free roller in any one of the first to third aspects. It is characterized by.

  According to this aspect, in addition to the same effects as any one of the first aspect to the third aspect, the free roller can be freely moved within the set range, whereby the above-described “irregularity of the free roller” is achieved. Can be performed stably.

The invention of the ink jet textile printing apparatus according to the fifth aspect of the present invention includes, in any one of the first to fourth aspects, a roller movement facilitating means for facilitating the movement of the free roller. It is characterized by.
Here, “facilitating” the movement of the free roller is a structure that receives a rebounding force so that the free roller does not stand still when the free roller approaches and abuts the roller movement facilitating means. It means that there is.

  According to this aspect, in addition to the same operational effects as any one of the first aspect to the fourth aspect, the roller movement promoting means for promoting the free movement of the free roller is provided, so that it is more efficient. In particular, air bubbles between the recording medium and the conveying belt can be leveled, and the recording medium on the conveying belt can be uniformly flattened.

According to a sixth aspect of the present invention, there is provided the ink jet textile printing apparatus according to the fifth aspect, wherein the roller movement facilitating means is a resilient member such as a spring or a resin, or a shape part that is easily rebounded by colliding with the free roller. It is characterized by being comprised.
According to this aspect, the structure can be simplified and the promoting effect can be expressed.

  Here, in any one of the first to sixth aspects, the recording medium floating prevention means may be configured by a plurality of the free rollers shorter than the width of the recording medium.

  As a result, the free roller is short, so that the movement of the free roller irregularly becomes finer, the air bubbles between the recording medium and the conveying belt are efficiently leveled, and the recording medium on the conveying belt is flattened. Can do.

  The plurality of free rollers shorter than the width of the recording medium are arranged so that a part of each free roller overlaps in the width direction of the recording medium so that the bubbles on the entire surface of the recording medium can be dispersed. It is preferable that it is comprised. In addition, large bubbles that collide with the recording head of the printing unit are relatively less likely to occur, and when printing is not performed on the entire surface of the recording medium, only bubbles generated in the printing range are dispersed and uniformed. The short free roller may be partially disposed to limit the range in the width direction in which the free roller rolls.

  According to a seventh aspect of the present invention, there is provided the ink-jet printing apparatus according to any one of the first to fourth aspects, wherein the recording medium floating prevention means includes a plurality of shorter than the width of the recording medium. The free roller is slanted so that the end of the free roller close to the side of the recording medium is located downstream of the other end in the transport direction of the transport belt. It is characterized by being arranged.

  According to this aspect, since the free roller is short, the movement of the free roller irregularly rolling becomes finer, the air bubbles between the recording medium and the conveyance belt are efficiently leveled, and the recording medium on the conveyance belt is flattened. Can be Furthermore, the movement of the free roller can easily act to push out the bubbles between the recording medium and the conveying belt to the side of the recording medium, and the bubbles can be leveled efficiently.

  The plurality of free rollers shorter than the width of the recording medium are arranged obliquely so that a part of each free roller overlaps in the width direction of the recording medium, and the bubbles on the entire surface of the recording medium are dispersed. It is preferable to be configured to be able to. In addition, large bubbles that collide with the recording head of the printing unit are relatively less likely to occur, and when printing is not performed on the entire surface of the recording medium, only bubbles generated in the printing range are dispersed and uniformed. The short free roller may be partially disposed to limit the range in the width direction in which the free roller rolls.

  Further, in any one of the first to seventh aspects, the free roller is held by a plate-like roller holding member having an opening serving as a frame surrounding the free roller. Also good.

  According to this structure, in addition to the same effect as any one of the first to seventh aspects, the structure can be simplified and the free roller can be held.

  According to the present invention, when a recording medium is affixed on a conveyance belt having adhesiveness on the surface and the recording medium is conveyed below the printing unit, air bubbles enter between the conveyance belt and the recording medium. The resulting recording medium can be kept flat and adhered evenly. A recording medium that is uniformly and flatly attached to the conveyance belt is conveyed to the printing unit, so that high image quality printing can be performed.

<Example 1>
FIG. 1 is a main part schematic diagram showing an example of an ink jet textile printing apparatus 1 according to the present invention. The recording medium in the present embodiment is a cloth 2 such as cotton, silk, wool, chemical fiber, and mixed spinning. The cloth 2 before ink-jet printing is usually wound in a roll shape, and is unwound from the cloth roll 10 by the supply roller 11, and the recording medium passes through the intermediate roller 12, the intermediate roller 13, and the intermediate roller 14. Guided to the conveyor belt 7 of the conveyor 3.

  The recording medium conveyance unit 3 is configured such that a loop-shaped conveyance belt 7 is driven by a conveyance roller 15 and a conveyance roller 16. A white arrow in FIG. 1 is a driving direction of the conveying belt 7 and a conveying direction of the cloth 2.

  An adhesive pressure-sensitive adhesive layer (not shown) called a glue is provided on the surface of the conveyor belt 7, and the cloth 2 unwound from the cloth roll 10 is adhesively supported on the surface of the conveyor belt 7. Then, it is conveyed below the printing unit 4. The arrangement of the conveyance rollers for conveying the conveyance belt 7 is not limited to this configuration, and the conveyance roller 7 is disposed between the conveyance rollers so that the cloth 2 attached to the surface of the conveyance belt 7 is stably conveyed. In addition, an auxiliary roller for assisting the conveyance of the conveyance belt 7 and a platen roller for supporting the belt below the printing unit 4 may be provided.

  The intermediate roller 14 disposed immediately before the upstream side of the transport belt 7 is disposed slightly below the height of the transport surface of the transport belt 7 so that the cloth 2 can easily stick to the surface of the transport belt 7. It is desirable that

  The printing unit 4 includes a recording head 6 that performs printing by an ink jet method, and performs printing by discharging ink to the cloth 2 conveyed below the printing unit 4. . After printing on the cloth 2 below the recording head 6 of the printing section 4, the cloth 2 is peeled off from the conveyor belt 7 and wound up by a winding roller.

  On the upstream side of the printing unit 4, a free roller 5 is provided as a means for preventing the recording medium from floating on the conveying belt 7. FIG. 2 is a perspective view showing an example of the recording medium floating prevention means of the inkjet textile printing apparatus 1 according to the present invention. When the cloth 2 is affixed to the conveyor belt 7, bubbles may enter between the conveyor belt 7 and the cloth 2, and the cloth 2 may partially float from the conveyor belt 7. As described above, the recording medium floating prevention means indicates that the cloth 2 is partially lifted from the conveying belt 7 on the upstream side of the printing unit 4 (the white arrow in FIG. 2 is the conveying direction of the cloth 2). This prevents the cloth 2 from being conveyed below the printing unit 4 in a state where the cloth is floating.

The free roller 5 will be described in detail below.
The free roller 5 is a rod-shaped roller and can be formed of, for example, metal or ceramic. The free roller 5 is longer than the width of the cloth 2 that is a recording medium, and is placed on the cloth 2 that is adhesively supported by the transport belt 7, and freely moves in the transport direction of the transport belt 7 and in the opposite direction. It is configured to be movable. That is, the shaft of the free roller 5 is not fixed. Only the own weight of the free roller 5 is applied to the cloth 2 and the conveyor belt 7. The diameter and weight of the free roller 5 are desirably set according to the type and thickness of the cloth 2 as a recording medium.

  In the case where one free roller 5 is used as in the present embodiment, the free roller 5 is set longer than the width of the cloth 2 as the recording medium and disperses the bubbles on the entire cloth surface. It is preferable to be arranged so that In addition, large bubbles that collide with the recording head 6 of the printing unit 4 are relatively less likely to be generated, and when printing is not performed on the entire surface of the cloth, only the bubbles generated in the printing range are dispersed and made uniform. It is also possible to set the free roller 5 short and to limit the range in the width direction in which the free roller 5 rolls.

  When the transport belt 7 of the recording medium transport unit 3 is driven, the free roller 5 freely rolls on the transport belt 7 in the belt transport direction and in the opposite direction. Since the shaft of the free roller 5 is not fixed, its rolling is not regular.

  Bubbles between the conveyor belt 7 and the cloth 2 are pushed by the rolling of the free roller 5. When the swell of the cloth 2 that can be wrinkled (similar to the swell of the cloth made by the sticking roller 32 shown in FIG. 11) is made, the free roller 5 is repelled by the swell, and the free roller 5 is raised. Can roll in no direction. If there are other bubbles at the tip of the rolling direction, the bubbles are pushed by the rolling of the free roller 5 and the cloth 2 rises, and the free roller 5 is repelled by the rising.

  By repeating the “irregular movement (rolling)” of the free roller 5, the air bubbles between the conveyor belt 7 and the cloth 2 are evenly distributed uniformly and flattened without wrinkling the cloth 2. Can do.

  In this embodiment, the range of free movement of the free roller 5 is set within a predetermined range by the movement restricting member 8. By making the free roller 5 freely movable within the set range, the above-mentioned “irregular movement” of the free roller 5 can be stably performed. This range of free movement is preferably set according to the diameter of the free roller 5 and the type and thickness of the cloth 2 as a recording medium. Further, the movement restricting portion 18 of the movement restricting member 8 is configured to be movable, and the range of the free movement can be changed, so that various cloths can be supported.

  Further, as shown in FIG. 3, the movement restricting portion 18 of the movement restricting member 8 is provided with a resilient member 19 which is a roller movement facilitating means that facilitates free movement of the free roller 5, that is, facilitates the movement. Can be provided. Thus, when the free roller 5 hits the movement restricting portion 18, the free roller 5 is easy to roll without being stopped at that position. Examples of the elastic member 19 include a spring and a resin having a property that the free roller easily rebounds. Further, as shown in FIG. 4, the movement restricting portion 18 may be formed into a convex shape that easily rebounds when the free roller 5 hits. Since the free roller 5 is easily biased to the downstream side in the transport direction of the transport belt, the elastic member 19 may be provided only on the downstream movement restricting portion 18.

  The roller movement facilitating means pushes the free roller back from the downstream side to the upstream side in the conveyance direction of the conveyance belt or from the upstream side to the downstream side, not limited to the elastic member 19 provided in the movement restriction unit 18. A component member may be provided separately.

  Further, if the conveyor belt 7 is intermittently driven and printing printing is performed by the printing unit 4 while the conveyor belt 7 is stopped, the free roller is driven by the intermittently driven reaction of the conveyor belt 7. Since 5 becomes easy to move, the bubbles between the cloth 2 and the conveyor belt 7 can be leveled efficiently, and the cloth 2 on the conveyor belt 7 can be flattened.

<Example 2>
Next, another aspect of the recording medium floating prevention means in the ink jet textile printing apparatus 1 according to the present invention will be described. As shown in FIG. 5, the recording medium floating prevention means in this embodiment is configured such that a plurality of the free rollers 5 are arranged side by side in the conveying direction of the conveying belt 7. FIG. 5A shows an example in which a plurality of free rollers 5 are provided within a predetermined range, and FIG. 5B shows an example in which a movement restricting member 8 is provided for each free roller 5. .

  As shown in FIG. 5A, when a plurality of free rollers 5 are provided within a predetermined range, the free rollers 5 collide with each other, and each free roller 5 moves differently. In this way, the air bubbles between the cloth 2 and the conveying belt 7 can be efficiently leveled by the “free and irregular movement” of the plurality of free rollers 5.

  Further, as shown in FIG. 5B, a movement restricting member 8 may be provided for each free roller 5. By dividing the movement restricting member 8 for each free roller, for example, the moving range of movement of each free roller 5 is changed from the upstream side to the downstream side in the conveyance direction (white arrow in the figure) of the conveyance belt 7. Therefore, the “irregular movement” of the free roller 5 can be finely controlled in accordance with the type and thickness of the cloth 2 as a recording medium.

Furthermore, as shown in FIG. 6, the diameter of the plurality of free rollers 5a, 5b, 5c can be set larger from the upstream side to the downstream side in the transport direction of the transport belt. Free rollers made of the same material increase in weight as the roller diameter increases.
When the air bubbles formed between the cloth 2 and the conveyor belt 7 are large, there is a possibility that wrinkles may be formed on the cloth 2 when a free roller having a large roller diameter and a large roller rolls over the large air bubbles.

  According to the present embodiment, the large bubbles can be reduced to some extent without causing wrinkles on the cloth 2 by the lightest free roller 5a having the smallest diameter on the upstream side in the conveying direction of the conveying belt. And since the medium-diameter free roller 5b and the large-diameter free roller 5c are arranged as going downstream, the air bubbles slightly reduced by the small-diameter light free roller 5a are heavier than the free roller 5a. The medium-diameter free roller 5b acts to further disperse the bubbles, and finally the cloth is firmly leveled by the heavier large-diameter free roller 5c. Therefore, even with respect to a cloth that easily generates large bubbles between the transport belt and the cloth, the bubbles can be uniformly dispersed and flattened without forming a wrinkle.

<Example 3>
Still another aspect of the recording medium floating prevention means in the ink jet textile printing apparatus 1 according to the present invention will be described. FIG. 7 is a perspective view showing still another example of the recording medium floating prevention means of the inkjet textile printing apparatus 1 according to the present invention.

  The recording medium floating prevention means in this embodiment includes a plurality of free rollers 5d that are shorter than the width of the cloth 2, and the free rollers 5d are plate-shaped roller holders having openings 22 that serve as frames surrounding the free rollers 5d. It is held by the member 21. The opening 22 is set to a size that allows the free roller 5d to perform the “irregular movement” of the free roller described in the first embodiment.

  If the length of the free roller is short, the free movement in which the free roller 5d rolls irregularly becomes finer, and air bubbles between the cloth 2 and the conveyor belt 7 are efficiently leveled, and the cloth on the conveyor belt 7 2 can be planarized. In particular, when the cloth 2 is wide, it is effective to use a plurality of free rollers 5d shorter than the width of the cloth 2 as in this embodiment.

  For example, as shown in FIG. 8, the plurality of free rollers 5d are arranged in the width direction of the cloth 2 so as to prevent any of the free rollers 5d from acting on the entire width of the cloth 2 as a recording medium. A part of each free roller 5d is arranged to overlap.

  Further, as shown in FIG. 9, the end 24a of the free roller 5d closer to the side 25 of the cloth 2 is downstream of the other end 24b in the transport direction of the transport belt (white arrow in the figure). It can also arrange | position diagonally so that it may become a side. This is effective because the free roller 5d easily acts to push out the bubbles toward the side 25 of the cloth 2. 8 and 9, the free roller 5d that performs “irregular movement” is indicated by a dotted line inside the opening 22.

  It should be noted that large bubbles that collide with the recording head 6 of the printing unit 4 are relatively unlikely to be generated, and when printing is not performed on the entire surface of the cloth, only the bubbles generated in the printing range are dispersed and made uniform. Alternatively, the short free roller 5d may be partially disposed to limit the range in the width direction in which the free roller 5d rolls.

  Further, a portion indicated by reference numeral 23 inside the opening 22 of the roller holding member 21 is a portion where the roller surface of the free roller collides, and a resilient member 19 is provided here, or the free roller 5d collides and rebounds. The free roller 5d can be easily moved freely by forming it into an easy shape.

  INDUSTRIAL APPLICABILITY The present invention can be used for an ink jet printing apparatus that prints cloth by ejecting ink from an ink jet recording head.

FIG. 2 is a schematic view of a main part showing an example of an ink jet textile printing apparatus according to the present invention. FIG. 3 is a perspective view showing an example of a recording medium floating prevention unit of the ink jet textile printing apparatus according to the present invention. The figure which shows an example of a movement control member. The figure which shows the other example of a movement control member. It is a side view which shows the other example of the recording-medium floating prevention means of the inkjet textile printing apparatus which concerns on this invention. (A) is an example when a plurality of free rollers are provided within a predetermined range, and (B) is an example when a movement restricting member is provided for each free roller. The side view which shows the further another example of the recording-medium floating prevention means of the inkjet textile printing apparatus which concerns on this invention. The perspective view which shows the further another example of the recording-medium floating prevention means of the inkjet textile printing apparatus which concerns on this invention. The figure which shows an example of the roller holding member holding a free roller. The figure which shows the other example of the roller holding member holding a free roller. Schematic of the principal part of a conventional inkjet printing apparatus. The sectional side view which shows the problem which arises in the conventional inkjet textile printing apparatus.

Explanation of symbols

    DESCRIPTION OF SYMBOLS 1 Inkjet printing apparatus, 2 cloth (recording medium), 3 recording medium conveyance part, 4 printing part, 5, 5a, 5b, 5c, 5d free roller, 6 recording head, 7 conveyance belt, 8 movement control member, 10 cloth Roll, 11 Supply roller, 12, 13, 14 Intermediate roller, 15, 16 Conveyance roller, 17 Winding roller, 18 Movement restricting part, 19 Ejection member, 21 Roller holding member, 22 Opening, 24a, 24b Free roller 5d edge

Claims (7)

A printing unit that ejects ink from the recording head and prints on a recording medium;
A conveyor belt having adhesiveness on the surface;
A recording medium floating prevention means provided on the upstream side of the printing part,
The recording medium floating prevention means includes a free roller that is placed on the recording medium that is adhesively supported by the conveyance belt and configured to be movable in a conveyance direction of the conveyance belt and in a direction opposite to the conveyance direction. An ink jet textile printing apparatus.   2. The inkjet printing apparatus according to claim 1, wherein a plurality of the free rollers are arranged side by side in the transport direction of the transport belt, and the plurality of free rollers have a roller diameter upstream of the transport direction of the transport belt. An ink jet printing apparatus, characterized in that it is set to increase as it goes downstream.   2. The ink jet printing apparatus according to claim 1, wherein the transport belt is configured to be intermittently driven.   The inkjet printing apparatus according to any one of claims 1 to 3, further comprising a movement regulating member that regulates a movement range of the free roller.   5. The inkjet printing apparatus according to claim 1, further comprising a roller movement facilitating unit that facilitates the movement of the free roller. 6.   6. The ink jet textile printing apparatus according to claim 5, wherein the roller movement facilitating means is configured by a resilient member such as a spring or a resin, or a shape portion that is easily rebounded by colliding with the free roller. Inkjet printing equipment.   5. The inkjet printing apparatus according to claim 1, wherein the recording medium floating prevention unit includes a plurality of free rollers shorter than a width of the recording medium, and the free rollers are the free rollers. Ink jet textile printing, characterized in that the end of the roller near the side of the recording medium is disposed obliquely so as to be downstream of the other end in the transport direction of the transport belt apparatus.

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