JP2002266224A - Ink jet printer for cloth and method for transporting cloth for ink jet printing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink jet printer for cloth, capable of preventing the deformation of the cloth caused by its stretchability by a simple structure and enabling the printing of especially a broad cloth with high-quality print at a low cost. SOLUTION: A cloth unwound from a cloth roll is pressed from above with a press roller against a transfer roller, transported by the rotation of the transfer roller, printed with a recording head to print by the ejection of an ink and discharged from the printer. In the above method, the cloth is pressed between the transfer roller and the press roller placed at the upstream side of the transfer direction of the cloth relative to the recording head interposing a medium under the cloth and printed by transferring to the position of the recording head.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer for fabrics, and more particularly to a high-quality printing on a soft and thin woven fabric or an elastic woven fabric.

[0002]

2. Description of the Related Art Printers can be classified into a thermal type, a wire dot type, an ink jet type, and the like according to a recording method. Among these, an ink jet system (ink jet printer) is one in which a recording medium (for example, paper) is transported by a pressing roller and a transport roller, and an ink droplet is ejected from a printer head to form an image or the like. Until now, ink jet printers have been used as printing devices for paper and the like, but have also been used for printing on woven fabrics.

Various materials such as natural fibers such as silk, wool and cotton, and synthetic fibers such as polyester, acryl and nylon are used for fabrics for printing. These have different characteristics due to differences in fiber thickness and weaving, as well as brushed piles and knitted fibers like knits, so they must be handled differently than when printing on paper. become. As a recording medium, compared to paper or a film sheet, the woven fabric has no so-called stiffness, and in an ink jet printer, when conveyed by a pressing roller and a conveying roller as described above, the cloth is easily wrinkled, and the elasticity is increased. Use of a woven fabric such as a knit causes distortion in the fabric shape. Further, as the width of the fabric is increased, wrinkles and distortion of the shape of the fabric are liable to occur. It has become.

[0004] Therefore, in order to prevent distortion and wrinkles from occurring in the fabric, a polyester film disclosed in Japanese Patent No. 2925013, which can be used repeatedly, is coated with an acrylic micro-adhesive, and this is laminated to the fabric. The invention to perform printing and printing, the roller for conveying the fabric disclosed in JP-A-9-254370 is formed of a soft or semi-rigid foam, further provided with an elastic member to be in contact with the surface of the fabric to flatten, In addition, an invention in which a cloth is conveyed while changing the direction in which the cloth is conveyed upward or downward at a predetermined angle in a printer to flatten the cloth in the vicinity of a printer head, and Japanese Patent Application Laid-Open No. And the air-permeable sheet made of non-woven fabric is superimposed, transported and printed, and after printing, the fabric and non-woven fabric are also superposed. Such as winding take invention together in a state in which there has been proposed.

[0005]

In these inventions, the structure and control for preventing wrinkling and distortion of the fabric are complicated, or the structure requires high precision.
When printing equipment is expensive, requires frequent maintenance, and when printing on wide fabrics, polyester film (carrier) having the same width or more, or a large amount of However, since an adhesive and a nonwoven fabric are required, the printing cost is further increased. SUMMARY OF THE INVENTION The present invention provides an ink jet printer for fabric that can print wrinkles and distortion of the fabric with a simple configuration and print a high-quality image at low cost.

[0006]

According to the first aspect of the present invention,
The fabric drawn from the original roll is pressed from above by a pressing roller against a transport roller, transported by the rotation of the transport roller, and discharged through a recording head that performs printing by ink discharge. In a fabric transport method of a printer, a medium is interposed below the fabric between the transport roller and the pressing roller disposed on the upstream side of the recording head in the fabric transport direction and the pressing roller, and the fabric is transported to the print head. It is characterized by printing.

According to a second aspect of the present invention, the coefficient of friction between the transport roller and the medium is μ1, the coefficient of friction between the medium and the cloth is μ2, and the coefficient of friction between the cloth and the pressing roller is μ3. In this case, μ1 ≧ μ2> μ3 is satisfied.

According to a third aspect of the present invention, there is provided a fabric for printing on a fabric by pressing the fabric against a transport roller by a pressing roller, transporting the fabric by rotation of the transport roller, and discharging ink from a recording head. In the ink jet printer, a fabric original winding and a medium original winding are respectively arranged on the upstream side of the recording head in the fabric conveying direction, and the medium drawn from the medium original winding is overlapped under the fabric drawn from the fabric original winding. In addition, there is provided a conveying unit that is interposed between the conveying roller and the pressing roller and conveys to the recording head position.

According to a fourth aspect of the present invention, there is provided a fabric for printing a fabric by pressing the fabric against a transport roller by a pressing roller, transporting the fabric by rotation of the transport roller, and discharging ink from a recording head. In the ink jet printer, a fabric roll is arranged upstream of the recording head in the fabric transport direction, a medium is arranged endlessly so as to face the recording head, and the medium is placed under the fabric drawn from the fabric roll. And a conveying means for conveying the recording head to the recording head position by sandwiching the recording paper between the conveying roller and the pressing roller.

According to a fifth aspect of the present invention, the coefficient of friction between the transport roller and the medium is μ1, the coefficient of friction between the medium and the cloth is μ2, and the coefficient of friction between the cloth and the pressing roller is μ3. In this case, μ1 ≧ μ2> μ3 is satisfied.

The invention according to claim 6 is the invention according to any one of claims 3 to 5, wherein the medium is made of a paper material.

[0012]

FIG. 1 is a schematic structural view showing an ink jet printer 1 for fabric according to the present invention. The fabric ink jet printer 1 includes a recording head 2 that discharges ink from nozzles, and performs printing by scanning the recording head 2 while ejecting ink to a fabric 3 disposed below the recording head 2. The recording head 2 is provided on a carriage 4, and the carriage 4 is scanned by a scanning unit (not shown) orthogonally to the transport direction of the cloth. An image forming table 8 is provided below the recording head 2, and printing is performed by ejecting ink droplets to the cloth 3 on the upper surface of the image forming table 8, which is flat and smooth. In the vicinity of the end of the drawing table 8 on the upstream side in the transport direction of the fabric 3 from the position of the recording head 2, a transport roller 9 having a cylindrical shape as transport means for transporting the fabric 3 (via a medium 5 described later) is provided. A press roller 10 is provided. The cloth 3 is sandwiched between these two rollers, and the cloth 3 is sent out to the upper surface of the drawing table 8 by the rotation of the conveying roller 9 and is conveyed to the position of the recording head 2. Here, the cloth 3 is a recording medium made of cloth such as a knit, and a medium 5 described later is, for example, a paper material having hygroscopicity used as an underlay of the cloth 3 during printing. The medium 5 has a width equal to or larger than that of the cloth 3.

The fabric base roll 6 of the fabric 3 is rotatably attached to the ink jet printer 1 at a position upstream of the recording head 2 in the transport direction of the fabric 3. Also,
The fabric base roll 6 is disposed, for example, near the floor on which the inkjet printer 1 is installed, and is detachably attached to a frame or the like of the ink jet printer 1 that can sufficiently withstand the pivot of the fabric base roll 6. . A feed roller 12 and a tensioner 13 are provided above the main fabric roll 6 and between the recording head 2 and the main fabric roll 6 in order from the upstream in the transport direction of the fabric 3. The feed roller 12 is disposed above the fabric base roll 6 and downstream of the fabric 3 in the transport direction, and is rotatably supported by a frame of the inkjet printer 1 or a panel having sufficient rigidity. I have.

The feed roller 12 and the transport roller 9
The tensioner 13 is provided between the two. The tensioner 13 is a cylindrical roller.
It is supported by a pressing means (not shown), and is configured to be able to move up and down from the same height as the upper end of the transport roller 9 to a position lower than the feed roller 12 by this pressing means. The medium roll 7 has the medium 5 wound thereon, and is rotatably mounted below the ink jet printer 1 (below the feed roller 12 and the tensioner 13) like the fabric roll 6 as described above. It is configured to be detachable from the inkjet printer 1. The medium roll 7 is arranged downstream of the fabric roll 6 in the transport direction of the fabric 3, and the medium 5 pulled out from the medium roll 7 is transported in the ink jet printer 1, and the transport rollers 9 And the pressing roller 10, the fabric 3 is laid underneath.

The transport roller 9 is connected to the drawing table 8.
Of the ink jet printer 1 for fabric, or a frame having sufficient strength, so that the outermost uppermost portion of the conveying roller 9 does not protrude from the upper surface of the drawing table 8. It is pivotally supported by a rigid panel or the like, and is rotationally driven counterclockwise by driving means not shown in FIG. The pressing roller 10 is disposed above the transport roller 9, is rotatably supported by a pressing unit 11, and sandwiches the fabric 3 and the medium 5 between the transport roller 9 and applies a predetermined pressure. A feed roller 14 is provided at the other end of the drawing table 8 (downstream in the transport direction of the cloth 3), and supports the cloth 3 immediately after printing sent from the drawing table 8. Both the transport roller 9 and the feed roller 14 are arranged such that the outermost ends of the rollers are at the same height as or below the upper surface of the drawing table 8, and between the two rollers, the fabric 3 (and the fabric 3) is placed. The placed medium 5) is configured to be conveyed in parallel with the upper surface of the drawing table 8. A feed roller 15 is provided on the lower side of the feed roller 14 in the transport direction of the fabric 3.
Are provided (rotatably) in the same manner as the other feed rollers.

In the ink jet printer 1 configured as described above, the fabric 3 pulled out from the main fabric roll 6 is transported in the direction indicated by the arrow A1, and is drawn to the transport roller 9. The medium 5 pulled out from the medium roll 7 is also conveyed in the direction indicated by the arrow B <b> 1, and is drawn to the conveying roller 9. The cloth 3 and the medium 5 are sandwiched between the transport roller 9 and the pressing roller 10 and the upper surface of the drawing table 8 is indicated by an arrow AB.
Transported in the direction indicated by. At this time, the medium 5 pulled out from the medium roll 7 disposed on the lower side (of the fabric roll 6) in the transport direction indicated by the arrow AB, when sandwiched between the transport roller 9 and the press roller 10, It is in a state of being superimposed so that it is laid under. In this way, the cloth 3 and the medium 5 are superimposed, the upper surface of the drawing table 8 is conveyed, and the ink is ejected from the recording head 2 arranged above the drawing table 8.
Printing is performed on the fabric 3.

The printed fabric 3 and the medium 5 are separated, for example, after passing through a feed roller 14.
After passing through the storage unit 16 in the direction indicated by the arrow A2.
Is stored in The medium 5 separated from the fabric 3 is
The sheet is conveyed in the direction indicated by the arrow B <b> 2 and stored in the storage unit 17.

As described above, the printing process (printing) of the fabric 3 is performed.
When a material having large elasticity is used, when the material is sandwiched between the transport roller 9 and the pressing roller 10,
When the fabric 3 is sent out to the image forming table 8 by the transport roller 9 and the pressing roller 10, the fabric 3 partially expands and contracts, and is deformed in the thickness, the width direction, the transport direction, and the like. Disappears. This is more noticeable as the cloth is thinner and the dimensions (width direction) are larger, and even if ink is ejected from the recording head 2 to form an image with high accuracy, the recording medium is distorted.
Print quality will be degraded.

It is difficult to effectively prevent the generation of wrinkles, crimps, etc. of the fabric simply by using the paper for the underlaying of the fabric. And paste a sheet etc. as an underlay,
There were many things that prevented wrinkles and stretching. However, when the size of the fabric is increased and the fabric having a width of 1600 mm is handled, a large underlay is naturally required, and the printing cost is further increased. Therefore, there has been a problem of printing by the ink jet method.

Therefore, as an inexpensive underlaying material that can effectively prevent the generation of wrinkles and the like of the cloth, for example, appropriate rigidity (waist) and flexibility that does not cause wrinkles (fold marks) when passing through each roller ( A paper material having a following property is used for the medium 5. Since the medium 5 prevents deformation of the fabric 3, it is required to have rigidity (waist) that does not cause expansion or contraction during transport and flexibility that does not separate from the fabric when passing through each roller or the like.
Further, by using a paper material having a high hygroscopic property, it is possible to prevent the ink attached to the fabric from bleeding, particularly when a thin fabric is used, and to absorb excess ink on the fabric surface by absorbing moisture. Wrinkling can also be reduced. Further, the medium is preferably of a thin thickness so that it is not necessary to make a major design change for each mechanism to be transported in the printer. The medium 5 has a low cost because of its cost and ease of handling. Paper is suitable.

Here, the frictional force generated between the cloth 3 and the medium 5 for simultaneous transport without separating the cloth 3 and the medium 5 without using an adhesive or the like between the cloth 3 and the medium 5 In order to prevent the deformation of the cloth 3 which hinders printing when the cloth 3 and the medium 5 are superimposed on each other, between the transport roller 9 and the medium 5, between the cloth 3 and the medium 5, The friction roller 5 and the pressing roller 10 are configured so as to satisfy a predetermined condition.

FIG. 2 shows a conveying roller 9 constituting the conveying means.
FIG. 2 is a schematic configuration diagram of the pressing roller 10 viewed from the side.
As shown in FIG. 2, when the fabric 3 and the medium 5 are sandwiched and transported by the transport roller and the pressing roller,
The coefficient of friction μ1 between the medium 5 and the transport roller 9 is
The friction expressed by the friction coefficient μ2 between the medium 3 and the medium 5 and the friction expressed by the friction coefficient μ3 between the cloth 3 and the pressing roller 10 are applied. For these friction coefficients, μ1 ≧ μ2> μ3
When the configuration is such that the following condition is satisfied, the fabric 3 is wrinkled,
The fabric 3 can be superposed on the medium 5 while preventing the occurrence of distortion or the like due to expansion and contraction, and the cloth 3 can be conveyed while utilizing the rigidity (waist) of the medium 5.

When the above condition is not satisfied, μ1
Is smaller than μ2 (μ1 <μ2), the cloth 3 and the medium 5 are superposed, and the transport roller 9 and the pressing roller 10
When the cloth 3 is sandwiched between the medium 3 and the medium 3, the cloth 3 does not smoothly overlap
Is caught locally, so that wrinkles and cramps are likely to occur. When μ2 is smaller than μ3 (μ2 <μ3), the press roller 10 acts to apply a brake to the cloth 3 conveyed over the medium 5, so that the medium 5 and the cloth 3 overlap. In this case, the cloth 3 is wrinkled and crimped.

In particular, in the relationship between μ2 and μ3 (μ2> μ3), it is preferable that the ratio is large. Since the coefficient of friction is relatively determined by the two materials that come into contact with each other, the material used for the cloth, the material of the medium, the material forming the outer periphery of the transport roller 9, and the material forming the outer periphery of the holding roller 10 are selected. The condition of each of the above-mentioned friction coefficients is satisfied. Since the condition that needs to be satisfied here is the friction coefficient, the shape of the cloth 3 can be stabilized by selecting the medium 5 used for the underlay without being affected by the pressing of the pressing roller 10.

FIG. 3 is a table showing the materials combined with the medium, the conveying roller and the pressing roller, and the friction coefficients at the respective contact portions when the knit is used as the cloth. Here, the transport roller, which is not easy to replace in forming an ink jet printer, is a fixed roller (for example, a roller formed of a generally used hard foam or the like), and the pressing roller is relatively easy to replace. The material is changed for the medium and they are combined (for convenience, the fabric and the transport roller are fixed).

The friction coefficient μ1 when the transport roller is brought into contact with each medium is 0.75 for medium A, 0.73 for medium B, 0.71 for medium C, 0.68 for medium D, and 0.68 for medium D.
The medium E is 0.82 and the medium F is 1.18. Among them, the medium F has the highest friction coefficient, and μ1 ≧ μ2> μ3
It is most advantageous to satisfy the condition.

Similarly, when each medium is brought into contact with a cloth (knit) to be superimposed thereon, the friction coefficient μ2 of the medium A
0.27 for medium B, 0.41 for medium B, 0.4 for medium C
9, medium D 0.52, medium E 0.48, medium F
Is 0.54, and all the media exemplified here are μ1 ≧ μ
Condition 2 is satisfied.

Further, the friction coefficient μ when the cloth (knit) is brought into contact with a pressing roller for pressing the cloth from above is described.
3 is 1.19 for a sponge roller having a roller surface made of sponge, 0.39 for a stainless roller made of stainless steel, and 0.58 for an aluminum roller made of an aluminum alloy. It is most advantageous for the stainless roller to satisfy the condition of μ1 ≧ μ2> μ3.

When printing on a knit using a combination of the media illustrated in FIG. 3 (medium and press roller),
Each of the media B, C, D, E, and F can be used by using a stainless roller as the pressing roller so as to satisfy the condition of μ1 ≧ μ2> μ3. Preferably, μ1 ≧ μ2>
The medium F that satisfies the condition of> μ3 is most suitable. At this time, μ1 (1.18) ≧ μ2 (0.54) >> μ3
(0.39), and when the fabric is a knit, it is most effective to use the medium F and the stainless roller among the examples shown here.

The operation of the ink jet printer 1 shown in FIGS. 1 and 2 configured to satisfy the condition of the friction coefficient described above will be described. The fabric 3 drawn upward from the fabric base roll 6 is hung above the outer peripheral surface of the feed roller 12, conveyed upward in the ink jet printer 1, supported from below the fabric 3, and formed on the drawing table 8 (recording head 2). Is transported in the direction indicated by arrow A1.
The cloth 3 that has passed through the feed roller 12 is pressed down from above by a predetermined force by the tensioner 13 provided between the feed roller 12 and the transport roller 9 to generate tension (tension). This prevents wrinkles and the like from occurring. Needless to say, the tension by the tensioner 13 is applied to the entire width of the fabric 3 and stabilizes the shape of the fabric 3 while keeping the expansion and contraction of the fabric 3 constant.

The cloth 3 whose shape has been stabilized is transported by the conveying roller 9.
When it is sandwiched between the medium 5 and the pressing roller 10, the medium 5 pulled out from the medium main winding 7 is laid on the underlay. This is because, as shown in FIG. 2, the cloth 3 and the medium 5 are separated by a predetermined pressure applied from above the cloth 3 (in FIG. 2, obliquely above) by the pressing roller 10 (this pressure is adjusted by the pressing means 11). The fabric 3 and the medium 5 are superimposed, and are further pressed against the transport roller 9. When the fabric 3 and the medium 5 are transported in the direction indicated by the arrow A, the transport roller 9 rotates counterclockwise, and the pressing roller 10 rotates clockwise. The transport roller 9 and the pressing roller 1
0, the rotational driving force of the conveying roller 9 is transmitted to the medium 5 by the friction coefficient μ1, further transmitted to the cloth 3 by the friction coefficient μ2 from the medium 5, and from the cloth 3 to the pressing roller by the friction coefficient μ3. It is conveyed to 10.

At this time, the friction coefficient relationship (μ
1 ≧ μ2> μ3), the fabric 3 is superimposed on the medium 5 without causing any deformation that may hinder printing, and the rotational driving force of the transport roller 9 and the pressing roller 10
It is transported without being deformed by the resistance (braking). The medium 5 sandwiched between the transport roller 9 and the pressing roller 10 and the fabric 3 superposed on the medium 5 are sent to the upper surface of the drawing table 8 in a substantially close contact state. When the medium 5 is fed by the rotational driving force of the transport roller 9,
Due to the rigidity of the fabric 3, the fabric 3 is not deformed and the upper surface of the drawing table 8 (recording head 2
Downward). On the cloth 3 whose shape is stable on the upper surface of the drawing table 8, ink is ejected from the recording head 2 above the cloth 3 to form an image. In order to apply an appropriate tension to the cloth 3 located on the upper surface of the drawing table 8 during the printing process so as not to cause bending or the like, the cloth 3 is hung downward by a proper amount between the feed roller 14 and the feed roller 15, and Drawing table 8 by working gravity
, The fabric 3 is pulled toward the feed roller 14.

In the example illustrated in FIG. 1, the printed (printed) cloth 3 is separated from the medium 5 after passing through the feed roller 14 and passes through the feed roller 15 so that the ink is sufficiently dried. In the means 16, it is folded and stored at an appropriate length. Or, a winding means is provided,
The printed (printed) fabric may be wound up and stored on a winding roll or the like. Further, at the time of winding, the fabric 3 and the medium 5 may be wound in a state of being overlapped.

After passing through the feed roller 14, the medium 5 separated from the cloth 3 is stored in the storage means 17 as described above and reused, or when the ink or the like adheres to the medium 5 and the stain is severe. Discard. Alternatively, even after passing through the feed roller 14, the sheet may be conveyed in a state of being superimposed on the cloth 3 as described above, and may be stored in the storage unit 16 as described above.

As described above, processing such as application of an adhesive or the like to the medium 5 is unnecessary, and the price of the medium 5 can be suppressed. In addition, by using recycled paper or the like as the medium 5, resources can be reused, and the cost can be suppressed because the dirty medium 5 can be easily discarded as compared with the case where a sheet or the like is used. Can be. In addition, by suppressing the price of the medium, printing on a wide, long, and large-sized cloth can be performed at a lower cost without deteriorating the image quality.

In the ink jet printer 1 described above, the medium 5 is pulled out from the medium roll 7, laid under the cloth 3, and stored (discarded) after printing.
The ink jet printer 1a shown in FIG. 1 is configured so that media 5a are connected in a ring shape and circulated inside the printer. The medium 5a can be made of the same material as the medium 5, but is always transported while the printer 1a is in operation. Therefore, a material having sufficient durability to withstand this is used. .

The ink jet printer 1a has the same configuration as that of the ink jet printer 1 described above, except for the transport path of the medium 5, the medium roll 7, and the storage means 17. In the inkjet printer 1a, transport rollers 9,
Below the feed roller 14 and upstream of the position of the recording head 2 in the transport direction of the fabric 3, and downstream of the feed roller 12 in the transport direction of the fabric 3,
1 is arranged. Similarly, below the transport roller 9 and the feed roller 14, the downstream side in the transport direction of the fabric 3 from the position of the recording head 2.
, The feed roller 20 is located upstream of the cloth 3 in the conveying direction.
Is arranged. These feed rollers 20 and 21 are rotatably supported by a frame of the ink jet printer 1a or a panel having sufficient strength and rigidity like other feed rollers.

Here, after the fabric 3 is pulled out from the main fabric roll 6, the fabric 3 is conveyed in the direction indicated by the arrow A1, passes through the feed roller 12, and moves toward the conveying roller 9 while being given a predetermined tension by the tensioner 13. . Thereafter, when the cloth 3 is sandwiched between the conveying roller 9 and the pressing roller 10, the cloth 3 is overlaid on the medium 5 a as an underlay, and is conveyed in a stable shape on the upper surface of the drawing table 8.
An image is formed by attaching ink droplets ejected from the printer. Thereafter, the cloth 3 is transferred to the medium 5 after passing through the feed roller 14.
The sheet is separated from the sheet a and passes through the feed roller 15, is conveyed in the direction indicated by the arrow A <b> 2, and is stored in the storage unit 16. As described above, the conveyance of the fabric 3 is the same as that of the above-described inkjet printer 1.

The ink jet printer 1a is configured so that the annular medium 5a circulates between the transport roller 9, the feed roller 14, the feed roller 20, and the feed roller 21. The medium 5a is conveyed in the direction indicated by the arrow B3, stacked so as to be under the cloth 3, sandwiched between the conveying roller 9 and the pressing roller 10, and fed from the conveying roller 9 by the rotational driving force of the conveying roller 9. The upper surface of the drawing table 8 is moved together with the cloth 3 (substantially in close contact) toward the roller 14. The medium 5a that has passed through the feed roller 14 is
It is separated from the fabric 3 and transported in the direction indicated by the arrow B4,
After passing through the feed roller 20, it is conveyed in the direction indicated by the arrow B <b> 5 and passes through the feed roller 21. Then, the sheet is transported again in the direction indicated by the arrow B3, and is superimposed on the cloth 3 on the transport roller 9 and the pressing roller 10. The medium 5a repeats such a circulating operation.

The circulating medium 5a is replaced in a timely manner when dirt adheres or when the medium is severely damaged.

[0041]

According to the method of transporting a fabric of an ink jet printer for fabric of the present invention, a medium is interposed below the fabric between a transport roller and a pressing roller, and the fabric is transported to a recording head for printing. As a result, the cloth can be conveyed without causing deformation due to expansion and contraction.

The coefficient of friction between the transport roller and the medium is μ1, and the coefficient of friction between the medium and the cloth is μ1.
2, and the friction coefficient between the cloth and the pressing roller is μ.
When μ3 ≧ 3, μ1 ≧ μ2> μ3. Therefore, when the cloth is sandwiched and conveyed by the conveyance roller and the pressing roller, deformation due to expansion and contraction of the cloth can be prevented, and the print quality of the cloth can be prevented. Can be increased.

Further, according to the ink jet printer for fabric of the present invention, under the fabric pulled out from the fabric roll,
The medium pulled out from the medium roll is superimposed, sandwiched between the conveyance roller and the pressing roller, and has a conveyance means for conveying to the recording head position. It is possible to obtain an ink jet printer for fabric which can perform high-quality printing while being economical.

Further, according to the ink jet printer for fabric of the present invention, the endless medium is superimposed under the fabric drawn from the original winding of the fabric, and is conveyed to the recording head position by being sandwiched between the conveying roller and the pressing roller. Since it has a transporting means, it is possible to transport the fabric with a simple configuration while preventing deformation due to expansion and contraction of the fabric, and to obtain an inkjet printer for a fabric that enables high-quality printing of a long fabric economically. be able to.

Further, when the friction coefficient between the transport roller and the medium is μ1, the friction coefficient between the medium and the cloth is μ2, and the friction coefficient between the cloth and the pressing roller is μ3, μ1 ≧ Since μ2> μ3, it is possible to prevent deformation due to expansion and contraction of the fabric when the fabric is sandwiched and transported between the transport roller and the pressing roller with a simple configuration, and to improve the print quality of the fabric. Can be.

Further, since the medium is constituted, it is possible to economically perform high-quality printing even when printing on a wide cloth, and furthermore, it is possible to reuse resources while maintaining maintenance and the like. An ink jet printer for fabric which can be easily handled can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a configuration of an inkjet printer according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a configuration of a transport unit.

FIG. 3 is a table showing respective friction coefficients between a conveyance roller and a medium, between a medium and a cloth, and between a cloth and a pressing roller.

FIG. 4 is a schematic configuration diagram illustrating a configuration of an inkjet printer according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Ink jet printer 2 Recording head 3 Fabric 4 Carriage 5 Medium 6 Fabric original winding 7 Medium original winding 8 Drawing table 9 Conveyance roller 10 Pressing roller 11 Pressing means 12, 14, 15, 20, 21 Feeding roller 13 Tensioner 16, 17 Storage means

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) D06P 5/00 111 B41J 3/04 101Z

Claims (6)

[Claims] 1. A textile drawn out from a main winding of a textile is pressed against a transport roller from above by a pressing roller, is transported by the rotation of the transport roller, and is printed after printing through a recording head that prints by discharging ink. In the method of transporting a fabric of an inkjet printer for a fabric to be discharged, a medium is interposed below the fabric between the transport roller and the pressing roller disposed upstream of the recording head in the fabric transport direction, and the recording is performed. A method of transporting a fabric by an inkjet printer for fabric, wherein the fabric is transported to a head for printing. 2. When the friction coefficient between the transport roller and the medium is μ1, the friction coefficient between the medium and the cloth is μ2, and the friction coefficient between the cloth and the pressing roller is μ3, μ1 ≧ 2. The method according to claim 1, wherein μ2> μ3. 3. An ink jet printer for fabric which presses the fabric against a conveying roller by a pressing roller, conveys the fabric by rotation of the conveying roller, discharges ink from a recording head, and prints the fabric. A fabric original winding and a medium original winding are respectively arranged on the upstream side in the fabric transport direction from the head, and the medium drawn from the medium original winding is overlapped under the fabric drawn from the fabric original winding, and the conveying roller and An ink jet printer for fabric, comprising a conveying unit that is interposed between the press roller and the conveying head to convey the recording head. 4. A fabric ink jet printer for pressing a fabric against a transport roller by a pressing roller, transporting the fabric by rotation of the transport roller, and discharging ink from a recording head to print the fabric. A fabric roll is disposed upstream of the head in the fabric transport direction, a medium is disposed endlessly so as to face the recording head, and the medium is superimposed under the fabric drawn from the fabric roll and transported. An ink jet printer for fabric, comprising a conveying unit that is interposed between a roller and the pressing roller and conveys to the recording head position. 5. When the friction coefficient between the transport roller and the medium is μ1, the friction coefficient between the medium and the cloth is μ2, and the friction coefficient between the cloth and the pressing roller is μ3, μ1 ≧ 5. The ink jet printer for fabric according to claim 3, wherein μ2> μ3. 6. The ink jet printer for fabric according to claim 3, wherein the medium is made of a paper material.