JP5928679B2 - Inkjet printing apparatus and method for producing printed matter - Google Patents

Description

  The present invention relates to an inkjet printing apparatus that performs printing on a fabric, that is, a material to be printed by an inkjet method, and a method for manufacturing a printed product.

Conventionally, when ink is ejected to the front side, which is one side of the fabric, and images such as designs and characters are printed, the ink penetrates deeply into the back side, which is the other side of the fabric. Thus, a textile printing technique is known in which the image can be confirmed (viewed) from the other surface.
In this case, a technique of applying a penetrating liquid as an auxiliary agent for promoting ink permeation to the one surface prior to discharging the ink to the one surface is described in Patent Document 1 below.

US 2011/0879825

  However, according to the technique disclosed in Patent Document 1, since the penetrating liquid is applied to one side of the fabric that becomes the printing surface, the ink subsequently ejected toward the one side is the other side. Although the penetrability of the ink toward the surface is improved, the penetrating liquid may cause bleeding in the surface direction, and a clear image may not be printed.

  An object of the present invention is to enable printing in which a printed image printed on one side of the fabric can be viewed not only from one side of the fabric but also from the other side in a state where ink bleeding is suppressed. There is to do.

  In order to solve the above problems, a first aspect of an ink jet printing apparatus according to the present invention includes a printing head that forms a printed image by ejecting ink onto one surface of a printing material, and the other of the printing material. And an application member that applies the penetrating liquid in contact with the surface of the coating, and the application operation part includes a region facing the nozzle row of the printing head, and a discharge target region in which ink is discharged from the head And an upstream region located on the upstream side in the conveyance direction of the printing material from the discharge region, and a downstream region located on the downstream side in the conveyance direction of the printing material from the discharge region, It is provided in at least one or more regions.

  Here, “printed material” means “fabric” to be printed, natural fibers such as cotton, silk and wool, chemical fibers such as nylon, and composite fibers such as woven fabrics, knitted fabrics and nonwoven fabrics. Etc., and includes both a long one wound in a roll shape and one cut into a predetermined length. Furthermore, in addition to the types of furniture such as handkerchiefs, scarves, towels, curtains, sheets, and bed covers after sewing, fabrics before and after cutting that exist as parts before sewing are also included.

According to this aspect, the application surface of the application member that applies the penetrating liquid in contact with the other surface of the printing material is provided on the other surface of the printing material opposite to the ink ejection surface. It takes some time for the penetrating liquid to penetrate one side of the material to be printed on which the printed image is directly formed. Accordingly, ink bleeding caused by the ink discharged from the printing head coming into contact with the penetrating liquid is suppressed, and a clear printed image is formed.
In addition, when the application portion of the application member is provided in the lower region of the printing head, that is, in the discharge region, or in the vicinity of the discharge region on the upstream side or the downstream side, When the coating member comes into contact with the other surface of the material to be printed, the downward bending of the material to be printed at the portion where the printing is performed is suppressed, and printing with good image quality can be executed.

  According to a second aspect of the inkjet printing apparatus of the present invention, in the first aspect, the coating action part is provided so as to be movable in a direction along a conveying direction of the printing material, and the coating action part It is characterized by having a control part which controls the movement speed of the above.

  According to this aspect, the penetrating liquid can be continuously applied to the other surface of the recording material by the movement of the application action portion. In addition, if the moving speed of the coating action portion is increased, the amount of the penetrating liquid applied is increased accordingly. Therefore, if the moving speed of the coating action portion is controlled by the control portion, the property of the printing material to be used is increased. An appropriate amount of penetrant applied can be set accordingly.

  According to a third aspect of the ink jet printing apparatus of the present invention, in the second aspect, the application member includes an application roller that rotates in a direction along a conveyance direction of the material to be printed, and the application action of the application roller. The section is provided in the upstream region.

According to this aspect, since the coating member includes the coating roller that rotates in the direction along the conveyance direction of the printing material, the structure of the coating member can be configured in a compact manner. The range of contact between the application surface of the application roller and the other surface of the material to be printed is narrow, but when combined with the conveyance of the material to be printed, the penetrating liquid can be applied to a wide area on the other surface of the material to be printed. Is possible.
Further, since the application roller is provided in the upstream region below the printing head, it is possible to apply the penetrating liquid prior to the ejection of the ink.

  A fourth aspect of the ink jet printing apparatus according to the present invention is the ink jet printing apparatus according to the second aspect, wherein the coating member includes an endless belt-shaped coating belt having a coating action portion having a length covering the entire length of the nozzle row of the printing head. And the application action portion of the application belt is provided in the discharge area.

According to this aspect, by rotating and driving the endless belt-shaped application belt constituting the application member, it is possible to apply the necessary amount of penetrating liquid at once to a wide range covering the entire length of the nozzle row of the printing head. It becomes possible. That is, a necessary amount of penetrating liquid can be applied by the action of only the application portion of the application belt without being combined with the conveyance of the printing material.
Therefore, in the case of this mode, it is possible to apply the penetrating liquid prior to the discharge of the ink as in the case of the third mode, even if the application portion is located in the discharge target region of the printing head. Become. In addition, the material to be printed in the lower region of the printing head can be supported by the coating belt over a wide range, thereby improving the printing quality.

  According to a fifth aspect of the ink jet textile printing apparatus of the present invention, in any one of the second to fourth aspects, the application operation unit includes the discharge area, the upstream area, and the downstream side. A plurality of regions are arranged at different positions in the region formed by the region, and when the control unit executes printing first and applies the penetrating liquid after printing, and when the penetrating liquid is applied first and then printed The application member to be used is switched between when performing the above.

According to this aspect, it is possible to adjust the penetrant application timing before or after ink ejection by switching the application member to be used.
Therefore, when it is desired to form a sharp and clear printed image according to the user's preference, the application timing of the penetrating liquid is delayed, and when the effect of ink bleeding is to be produced, the application timing of the penetrating liquid is used. It is possible to select such as speeding up.

  According to a sixth aspect of the inkjet textile printing apparatus of the present invention, in the second aspect, the application action portion of the application member is movable in each of the discharge target area, the upstream area, and the downstream area. The coating operation is performed when the control unit executes printing first and applies the penetrating liquid after printing, and when the penetrating liquid is applied first and printing is performed after coating. The position of the part is switched.

According to this aspect, it is possible to appropriately move the position of the coating action portion by providing the movement mechanism that moves the coating action portion between the upstream area and the downstream area with the discharge area interposed therebetween. become. As a result, it is possible to adjust the penetrant application timing before ink discharge, after ink discharge, or simultaneously.
Therefore, as in the fifth aspect, when it is desired to form a sharp and clear printed image according to the user's preference, the application timing of the penetrating liquid is delayed and the effect of ink bleeding is to be produced. In this case, it is possible to select, for example, to accelerate the application timing of the penetrant.

  In the ink jet printing apparatus according to any one of the first to sixth aspects, the application member of the application member may have a structure in which a recess for storing a penetrating liquid is formed. is there.

  By providing the concave portion, the amount of penetrating liquid that can be stored in the entire application working surface of the applying member increases, so that more penetrating liquid is carried to the other surface of the printing material to increase the penetrating efficiency of the penetrating liquid. It becomes possible to improve.

  According to a seventh aspect of the present invention, there is provided a method for producing a printed material, wherein the printing is performed on one surface of a material to be printed using the inkjet printing apparatus according to any one of the first to sixth aspects. A method for producing a printed material, comprising: a surface on which a desired printing image is formed by ejecting ink on a material to be printed; and a surface on which a penetrating liquid is applied to the material to be printed while supporting the material to be printed. It is characterized in that a printed product is produced by executing printing in different ways.

  According to this aspect, in the production of the printed matter, the operational effect of the ink jet printing apparatus according to any one of the first to sixth aspects can be obtained, and the printed image can be visually recognized on both the front and back sides of the printed matter. And high-quality printed matter with less ink bleeding can be produced efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view showing a schematic configuration of a main part of an inkjet printing apparatus according to Embodiment 1 of the present invention. FIG. 3 is a side cross-sectional view illustrating the application timing of the penetrating liquid and the ejection timing of the ink in the inkjet printing apparatus according to the first embodiment of the present invention in three stages (A), (B), and (C). The perspective view which shows the three aspects of (A) (B) (C) of the application | coating surface of the application roller of the inkjet printing apparatus which concerns on Example 1 of this invention. FIG. 5 is a side sectional view showing a schematic configuration of a main part of an ink jet printing apparatus according to a second embodiment of the present invention. FIG. 6 is a side cross-sectional view showing the timing of penetrating liquid application and ink ejection in the inkjet textile printing apparatus according to Embodiment 2 of the present invention in three stages (A), (B), and (C). FIG. 5 is a side sectional view showing a schematic configuration of a main part of an ink jet textile printing apparatus according to Embodiment 3 of the present invention. The sectional side view which shows separately the usage mode of the application | coating member of the inkjet textile printing apparatus which concerns on Example 3 of this invention in the case (A) which precedes application | coating of a osmotic solution, and the case (B) which precedes discharge of an ink. 9 is a flowchart showing a flow of operation start of an application member and a printing head of an ink jet printing apparatus according to Embodiment 3 of the present invention. FIG. 6 is a side sectional view showing a schematic configuration of a main part of an ink jet textile printing apparatus according to Embodiment 4 of the present invention. The sectional side view which shows separately the usage mode of the application | coating member of the inkjet textile printing apparatus which concerns on Example 4 of this invention in the case (A) which precedes application | coating of a osmotic solution, and the case (B) which precedes discharge of an ink. 10 is a flowchart showing a flow of operation start of an application member and a printing head of an inkjet printing apparatus according to Embodiment 4 of the present invention. The sectional side view which shows schematic structure of the principal part of the inkjet textile printing apparatus which concerns on the other Example of this invention.

Hereinafter, based on Example 1 to Example 4, the structure of the ink jet printing apparatus 1 of the present invention and the method for producing a printed material executed by using the ink jet printing apparatus 1 will be described.
As shown in FIG. 1, the inkjet printing apparatus 1 has one surface (hereinafter also referred to as “front surface” and “printed surface”) 7 of a material to be printed (hereinafter also referred to as “fabric”) T. A coating head 3 that forms a desired printed image by ejecting ink C onto the other side of the printing material T and the other side (hereinafter also referred to as “back side surface” and “coated surface”) 9 of the printed material T The coating member 5 which the part 11A contacts and applies the osmotic solution S is provided.

Further, the application portion 11A of the application member 5 includes an area M that includes an area facing the nozzle row 6 of the printing head 3 and from which the ink C is ejected from the head 3; At least an upstream region L positioned on the upstream side in the transport direction A of the printing material T and a downstream region N positioned on the downstream side in the transport direction A of the printing material T with respect to the discharge region M It is provided in one or more areas.
In other words, the application operation section 11A has a discharge target region M below the nozzle row length of the textile printing head 3 (meaning the length of the nozzle row 6 in the transport direction A), its upstream region L, and downstream region N. Or at two or more locations. The application portion 11A of the application member 5 that contacts the other surface 9 of the printing material T is in a direction along the conveyance direction A of the printing material T (the same direction as the conveyance direction A and opposite to the conveyance direction A). (Including the return direction D of the direction).

In addition, the inkjet textile printing apparatus 1 winds up a conveyance roller 13 as conveyance means for conveying the printing material T, a feeding roller (not shown) for feeding the printing material T, and the printing material T after printing. A winding roller (not shown) and a guide roller (not shown) for guiding the slack of the printing material T being conveyed are provided.
Further, the inkjet textile printing apparatus 1 has a control for controlling the moving speed of the application portion 11A of the application member 5, the ejection timing of the ink C ejected from the textile printing head 3, the feed speed of the transport roller 13, and the like. A portion 15 is provided.

[Example 1] (See FIGS. 1 to 3)
FIG. 1 shows a schematic configuration of a main part of an ink jet textile printing apparatus 1A according to the first embodiment. Hereinafter, the above-described constituent members constituting the ink jet printing apparatus 1 of the present invention will be described more specifically by taking Example 1 as an example.
The printing head 3 is a member that discharges the ink C supplied from a not-shown ink cartridge or the like through a tube or the like to one surface 7 of the printing material T. The printing head 3 includes a so-called serial type printing head 3 which is mounted on a carriage (not shown) and ejects ink C while reciprocating in the width direction intersecting the conveyance direction A of the printing material T, and the printing material. There is a so-called line-type printing head 3 that prints at once the printing range in the width direction of T, and any of these types of printing heads 3 can be used.

On the surface of the printing head 3 facing the material to be printed T, nozzle ports for discharging ink C of each color are arranged in the width direction, for example, and the above-described nozzle row 6 having a predetermined length is formed.
The coating member 5 includes a storage container 17 that stores a penetrating liquid S that is formed of a liquid that is permeable to the printing material T, and a coating roller that rotates in a direction along the conveying direction A of the printing material T. 19 and an application amount adjusting blade 21 that performs a scraping action in order to make an appropriate amount of the penetrating liquid S adhering to the surface serving as the application operation surface of the application roller 19.

Further, in this embodiment, the application portion 11A of the application roller 19 is provided in the upstream region L in the vicinity of the discharge target region M below the printing head 3 as shown in FIG. In this configuration, it is possible to apply the penetrating liquid S prior to the discharge of the ink C while ensuring the necessary supporting action of the printing material T. Here, the “vicinity” in the “vicinity of the discharge region M” is more preferably a range of 5 cm from the nozzle located on the most upstream side in the transport direction A, and more preferably a range of 1 cm to 2 cm.
The penetrant S used in this embodiment is a penetrant or a surfactant that is usually used in inks for inkjet printing.

Examples of such penetrants include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, propylene glycol, butylene glycol, 1,2,6-hexanetriol, thioglycol, hexylene glycol, glycerin, and trimethylol. Polyhydric alcohols such as ethane and trimethylolpropane, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol monoisobutyl ether, diethylene glycol monohexyl ether, triethylene glycol monomethyl Ether Polyhydric alcohols such as ethylene glycol monoethyl ether, triethylene glycol monobutyl ether, hexaethylene glycol monoethyl hexyl ether (Nippon Emulsifier Co., Ltd .: New Coal 1006), tetraethylene glycol monoethyl hexyl ether (Nippon Emulsifier Co., Ltd .: New Coal 1004) Alkyl ethers, urea, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, and the like.
Examples of polyhydric alcohol alkyl ethers include triethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, diethylene glycol monoisobutyl ether, diethylene glycol monohexyl ether, hexaethylene glycol monoethyl hexyl ether, tetraethylene glycol. Monoethylhexyl ether may be used alone or in combination of two or more.

Examples of the surfactant include fatty acid salts; anionic surfactants such as alkyl sulfate esters; nonionic surfactants such as polyoxyethylene alkylphenyl ether; Surfynol 61, 82, 104, 440, 465 , 485 (all trade names, manufactured by Air Products and Chemicals), olphine E1010, olfin STG, olfin Y (all trade names, manufactured by Nissin Chemical), and the like; Cationic surfactants; amphoteric surfactants, organopolysiloxane surfactants such as KF-353A, KF6017, X-22-6551, AW-3 (all trade names, manufactured by Shin-Etsu Chemical Co., Ltd.), etc. Can be mentioned.
It is preferable that the penetrant contains about 10 to 30% by mass of the above penetrant and about 0.1 to 3.0% by mass of the surfactant with respect to the total mass of the penetrant.

Moreover, it is possible to employ | adopt the structure which can store the said osmosis | permeation liquid S as shown to FIG. 3 (A) (B) (C) in the application | coating operation surface of the said application | coating roller 19. FIG.
Among these, FIG. 3 (A) shows a configuration in which a large number of recesses 23 that can store the permeating liquid S are provided independently on the entire circumference of the application surface of the application roller 19.
The recess 23 may be a continuous groove extending linearly or spirally in the axial direction of the application roller 19, or an annular continuous groove formed in the circumferential direction of the application roller 19. It may be in a shape.

  FIG. 3B shows a case in which a liquid absorbing layer 25 having liquid absorbing properties is formed on the outer peripheral portion serving as a coating working surface of the coating roller 19. As the liquid absorbing layer 25, for example, a porous sponge material or felt material in which continuous cavities are formed can be used.

  FIG. 3C shows a cylindrical brush-shaped application roller 19 in which a large number of raised portions 27 are formed radially on the outer peripheral portion serving as the application surface of the application roller 19. In the case of this aspect, the penetrating liquid S is stored in the space formed between the adjacent raised portions 27 and is sequentially conveyed to the other surface 9 which is the coated surface of the printing material T.

  Next, the operation mode of the ink jet textile printing apparatus 1A according to the first embodiment configured as described above will be described with reference to the control of the timing of the application of the penetrating liquid S and the discharge of the ink C by the control unit 15 in FIG. The description will be divided into the start of application shown in A), the start of printing shown in FIG. 2B, and the execution of application / printing shown in FIG.

(A) At the start of application When execution of printing is instructed from the control unit 15, the material T to be printed, which is a fabric, receives a conveying force from the conveying roller 13 and is sent in the conveying direction A at a predetermined conveying speed.
Before the starting end of the material to be printed T reaches the application action part 11 on the application roller 19, the application roller 19 starts to rotate and starts to apply the penetrating liquid S to the other surface 9 of the material to be printed T.
In addition, the application roller 19 is preliminarily rotated, and the permeation liquid S is stored in advance on the outer peripheral surface of the application roller 19.

(B) At the start of printing When the printing material T is transported and the starting end of the printing material T reaches the printing start position in the discharge area M below the printing head 3, the controller 15 sends the printing head 3 to the printing head 3. A command to start printing is issued, and discharge of ink C onto one surface 7 of the printing material T is started. In the present embodiment, an example is shown in which printing is performed without a margin from the starting end of the printing material T. In some cases, the ejection of the ink C to the one surface 7 is started after the printing material T is conveyed to a position where a margin is formed at the starting end.
At this time, the application roller 19 continues to rotate. As an example, the rotation speed and rotation direction of the coating roller 19 are set to be the same as the conveyance speed and conveyance direction of the printing material T.

Further, the rotation speed of the application roller 19 is configured to be controlled by the control unit 15 as described above, and is appropriately determined according to the difference in properties such as the type and thickness of the printing material T to be used. It is adjusted to the rotation speed.
Then, by the rotation of the application roller 19, the application of the penetrating liquid S to the other surface 9 toward the end of the printing material T is sequentially performed prior to the discharge of the ink C from the printing head 3. go.

(C) At the time of application / printing In the same way, the execution of the printing of the ink C on the one surface 7 toward the end of the printing material T and the execution of the application of the penetrating liquid S on the other surface 9 are similarly performed. However, the execution of the application of the penetrating liquid S is always continued in the preceding form.
Therefore, in the case of the present embodiment, the permeation of the permeate S from the other surface 9 of the material to be printed T proceeds by applying the permeate S first. Accordingly, the penetrating liquid S can be deeply penetrated into the printing material T at the timing when the ink C is discharged onto the one surface 7 of the printing material T. Thus, the ink C that has landed on one surface 7 of the printing material T can permeate from one surface 7 of the printing material T to the other surface 9 side by the action of the penetrating liquid S. Further, by penetrating the penetrating liquid S from the other surface 9 side as described above, it is possible to suppress ink bleeding in the surface direction of the landed ink C as compared with the case of penetrating from the one surface 7 side.

[Example 2] (See FIGS. 4 and 5)
FIG. 4 shows a schematic configuration of a main part of the ink jet printing apparatus 1B according to the second embodiment. Note that the inkjet textile printing apparatus 1B of the present embodiment is different from the first embodiment only in the configuration of the coating member 5, and the other configurations are the same as the first embodiment. The description of the same configuration is omitted, and the configuration of the coating member 5 that is different from the first embodiment will be mainly described.

That is, in this embodiment, the coating member 5 moves in a direction along the transporting direction A of the printing material T and the storage container 17 that stores the penetrant S, and covers the entire length of the nozzle row 6 of the printing head 3. An endless belt-like coating belt 29 having a coating application portion 11B having a length, a drive motor (not shown) for driving the coating belt 29, a drive pulley 31 connected to the output shaft of the drive motor, and the coating belt 29 It is comprised as an example by providing the driven pulley 33 and the tension pulley 35 which maintain a posture in a tension | tensile_strength state.
Here, the total length of the nozzle row 6 means the length from the most upstream nozzle (the right end in FIG. 4) constituting the nozzle row 6 to the most downstream nozzle (the left end in FIG. 4). ing. The length covering the entire length of the nozzle row 6 means a length larger than the total length of the nozzle row 6.

Further, in this embodiment, since the coating action portion 11B is provided in a wide range covering the discharge area M below the printing head 3, there is only a narrow range of the coating action portion 11A as in the first embodiment. Is different. In other words, the application portion 11B is provided in a range that covers the discharged region M, and is in contact with the printing material T in a wider range than the application portion 11A of the first embodiment.
Accordingly, in the present embodiment, the application action portion 11B of the application belt 29 is provided so as to be positioned in the discharge target region M, and the entire discharge range of the ink C is provided by disposing the application action portion 11B at this position. It is possible to support the printing material T over the entire area.

Even when the ink jet printing apparatus 1B having such a configuration is adopted, as shown in FIGS. 5A to 5C, it is possible to execute printing with the ink C preceded by the application of the penetrating liquid S. Thus, the same actions and effects as those of the first embodiment are exhibited.
In the case of this embodiment, the control of the coating amount of the penetrating liquid S according to the properties of the material to be printed T is performed by the amount of feeding of the coating belt 29, for example, twice that of the coating action portion 11B. When it is desired to obtain the feed amount of the coating belt 29, when the printing material T moves in the transport direction A by the discharge area M, the coating belt 29 is twice as long as the coating action portion 11B. This can be done by moving the distance between point a and point b.

[Example 3] (See FIGS. 6 to 8)
FIG. 6 illustrates a schematic configuration of a main part of an inkjet printing apparatus 1C according to the third embodiment. In addition, the inkjet textile printing apparatus 1C of the present embodiment is different from the first embodiment only in the configuration of the coating member 5, and the other configurations are the same as the first embodiment. The description of the same configuration is omitted, and the configuration of the coating member 5 that is different from the first embodiment will be mainly described.

That is, in this embodiment, two application rollers 37 and 39 similar to the application roller 19 employed in the first embodiment are arranged separately in an upstream area L and a downstream area N in the vicinity of the discharge target area M. . In the present embodiment, a bearing roller 41 having a smaller diameter than the coating rollers 37 and 39 that only supports the other surface 9 of the printing material T in the ejection region M between the regions L and N. Is arranged.
Further, the two application rollers 37 and 39 are configured to be able to move up and down independently between a contact position in contact with the other surface 9 of the printing material T and a retracted position not in contact by a lifting mechanism (not shown). Has been.

Incidentally, when the penetrating liquid S is first applied to the other surface 9 of the printing material T and printing of the ink C is performed after the application, as shown in FIG. The existing application roller 37 is raised and positioned at the contact position, and the application roller 39 existing in the downstream area N is lowered and positioned at the retracted position.
When the ink C is first printed and the penetrating liquid S is applied after the printing, the application roller 39 existing in the downstream region N is raised as shown in FIG. And the application roller 37 existing in the upstream region L is lowered and positioned at the retracted position.

Next, the flow of operation start of the coating member 5 and the printing head 3 of the ink jet printing apparatus 1C according to the third embodiment will be described with reference to the flowchart shown in FIG.
First, it is determined whether or not the penetrant S is applied in step S1. If it is determined in step S1 that the penetrating liquid S is applied, the process proceeds to step S2 to determine whether or not the application of the penetrating liquid S precedes the ejection of the ink C.

If it is determined in step S2 that the application of the penetrant S is preceded, the process proceeds to step S3, where the upstream application roller 37 is moved to the “contact position” and the downstream application roller 39 is moved to the “retracted position”.
Subsequently, the process proceeds to step S4, where the upstream application roller 37 and the intermediate support roller 41 are rotated.

Next, the process proceeds to step S5, where a command for driving the conveying roller 13 is issued from the control unit 15, and the printing material T is sent to the printing start position to start printing.
In the case of following the flow of steps S2, S3, S4, and S5, the application of the penetrating liquid S is performed by the upstream application roller 37 prior to the printing of the ink C. .

If it is determined in step S2 that the printing of the ink C precedes the application of the penetrating liquid S, the process proceeds to step S6 where the downstream application roller 39 is set to the “contact position” and the upstream application roller. 37 is moved to the “retraction position”.
Subsequently, the process proceeds to step S7, where the downstream application roller 39 and the intermediate support roller 41 are rotated.

Next, the process proceeds to step S5, and in the same manner as described above, a command to drive the conveying roller 13 is issued from the control unit 15, and the printing material T is sent to the printing start position to start printing.
In the case of following the flow of steps S2, S6, S7, and S5, the printing of the ink C is preceded, and thereafter, the application of the penetrating liquid S is performed by the downstream coating roller 39.

If it is determined in step S1 that the penetrant S is not applied, the process proceeds to step S8, and both the upstream application roller 37 and the downstream application roller 39 are moved to the retracted position F.
Subsequently, the process proceeds to step S9 where only the intermediate support roller 41 is rotated.
Next, the process proceeds to step S5, and in the same manner as described above, a command to drive the conveying roller 13 is issued from the control unit 15, and the printing material T is sent to the printing start position to start printing.

In the case of following the flow of steps S1, S8, S9, and S5, the printing image is visible only from one side 7 of the printed material A because the application of the penetrating liquid S is not executed. Product A is obtained.
Even when the inkjet textile printing apparatus 1C having such a configuration is adopted, the same operation and effect as those of the first embodiment can be exhibited. Further, in this embodiment, the user's preference can be obtained. It becomes possible to produce a printed product with a different size.

  Even if the same penetrating liquid S is used for the fabric to be printed T, even if it is the same penetrating liquid S, there is a difference in permeability. Therefore, it is desirable to vary the application timing of the penetrant S according to the difference in the permeability. Different materials include cotton and silk, cotton and polyester. The difference in permeability is cotton <silk, cotton <polyester. Moreover, even if the same material is used, there is a difference in permeability between dense and sparsely woven fabrics and different thicknesses (such as shirt pockets and bases).

It is preferable to apply the penetrating liquid S prior to the discharge of the ink C to the fabric having relatively low permeability. By applying the penetrating liquid S in advance to this type of fabric, the penetrating liquid S can be permeated into the surface 7 on the fabric front side before the ink C is discharged.
Accordingly, it is possible to promote the penetration of the ink C after being discharged into the surface 9 on the back side of the fabric. Therefore, bleeding of the ink C caused by the ink C discharged from the printing head 3 coming into contact with the penetrating liquid S is suppressed, and a clear printed image is formed.

For a fabric having a relatively high permeability, it is preferable to apply the penetrating liquid S after the ink C is discharged. For this type of fabric, if the permeation solution S is applied in advance, the permeation solution S will permeate excessively into the surface 7 on the fabric front side, which is the same as the state where the permeation solution S is applied from the front side. End up. Then, ink bleeding occurs on the surface 7 on the front side.
Therefore, in the case of a fabric with good penetrability, spreading of the ink C in the surface direction on the surface 7 on the front side is suppressed by applying the penetrating liquid S after discharging the ink C. The penetration of the ink C into the back surface 9 can be promoted by the action of the penetrating liquid S applied after the ink C is discharged. Therefore, bleeding of the ink C caused by the ink C discharged from the printing head 3 coming into contact with the penetrating liquid S is suppressed, and a clear printed image is formed.

[Example 4] (See FIGS. 9 to 11)
FIG. 9 illustrates a schematic configuration of a main part of an inkjet printing apparatus 1D according to the fourth embodiment. Note that the inkjet textile printing apparatus 1D of the present embodiment is different from the first embodiment only in the configuration of the coating member 5, and the other configurations are the same as the first embodiment. The description of the same configuration is omitted, and the configuration of the coating member 5 that is different from the first embodiment will be mainly described.

That is, in this embodiment, an application roller 43 similar to the application roller 19 employed in Embodiment 1 is provided, and the application roller 43 has an upstream area L in the vicinity of the discharge area M. It is configured to be able to move between the downstream region N.
Further, the application roller 43 is reciprocated between the upstream region L and the downstream region N with the discharge region M interposed therebetween by a moving mechanism 45 constituted by a rack and pinion mechanism as shown as an example. It is configured to be able to.

  Incidentally, when the penetrant S is applied first and the printing of the ink C is executed after the application, the application roller 43 is moved to the upstream region L as shown in FIG. On the other hand, when the ink C is printed first and the penetrating liquid S is applied after the printing, the application roller 43 is moved to the downstream region N as shown in FIG.

Next, according to the flowchart shown in FIG. 11, the flow of operation start of the coating member 5 and the printing head 3 of the ink jet printing apparatus 1D according to the fourth embodiment will be described.
First, in step S11, it is determined whether or not to apply the penetrant S in advance. When it is determined in step S11 that the application of the penetrant S is preceded, the process proceeds to step S12 and the application roller 43 is moved to the upstream region L.

Subsequently, the process proceeds to step S13, the application roller 43 is rotated, and the process further proceeds to step S14, where the printing material T is sent to the printing start position and printing is started.
In the case of following the flow of steps S11, S12, S13, and S14, the application of the penetrating liquid S is performed in advance by the application roller 43 prior to the printing of the ink C.

If it is determined in step S11 that the application of the penetrating liquid S is not preceded by the ejection of the ink C, the process proceeds to step S15 to determine whether or not the ejection of the ink C is preceded.
If it is determined in step S15 that ink C is to be ejected in advance, the process proceeds to step S16, and the application roller 43 is moved to the downstream region N.

Thereafter, similarly to the flow from step S11 to step S12, the process proceeds to step S13, the application roller 43 is rotated, the process further proceeds to step S14, and the printing material T is sent to the printing start position for printing. Start printing.
In the case of following the flow of steps S11, S15, S16, S13, and S14, the ink C is printed prior to the application of the penetrating liquid S.

If it is determined in step S15 that the ejection of the ink C is not preceded, the process proceeds to step S17, and the application roller 39 is moved to the ejection region M, for example.
Hereinafter, similarly to the flow from step S11 to step S12 and the flow from step S11 to step S15, S16, the process proceeds to step S13, the application roller 43 is rotated, and the process proceeds to step S14. Then, the printing material T is sent to the printing start position to start printing.
In addition, when following the flow of said step S11, S15, S17, S13, S14, discharge of the ink C and application | coating of the osmosis | permeation liquid S will be performed at the substantially same timing. In addition, approximately half of the downstream side of the nozzle row 6 is executed after the application of the permeate S and the printing of the ink C is performed afterwards. The printing of only ink C is executed at the place where it is not applied. Therefore, it can be said that there is an interest in producing a unique product as a printed product.

  Even when the inkjet printing apparatus 1D having such a configuration is adopted, the same operation and effect as those of the first embodiment are exhibited. Further, in this embodiment, as in the third embodiment, the user's It will be possible to produce textiles with different tastes according to taste.

Further, in the method for producing a printed material according to the present invention, printing is performed on one surface 7 of the printing material T using the ink jet printing apparatuses 1A to 1D as shown in the first to fourth embodiments. It is the manufacturing method of the printed matter applied to.
According to the method for manufacturing a printed material of the present invention, the surface (which becomes one surface 7) on which the ink C is ejected onto the material T to be printed to form a desired printed image and the material T to be printed are supported. However, the surface to which the penetrating liquid S is applied to the material to be printed T (becomes the other surface 9) is made different so that ink bleeding caused by direct contact between the ink C and the penetrating liquid S is suppressed, and the printed matter. Thus, it is possible to provide a printed matter on which a clear printed image that can be visually recognized from both the front and back sides is formed.

[Other embodiments]
The inkjet printing apparatus 1 and the method for producing a printed product according to the present invention are basically based on the above-described configuration, but the partial configuration may be changed within the scope not departing from the gist of the present invention. Of course, omission or the like can be performed.
For example, the form of movement of the application member 5 in the application action portion 11 is the rotation around the roller shaft as shown in the first, third, and fourth embodiments, or the endless belt-like application belt 29 shown in the second embodiment. However, the present invention is not limited to the case of moving along a looped path, and may be configured to slide in a direction along the conveyance direction A of the printing material T.

Also, the configuration of the application member 5 is not limited to the configuration shown in the first to fourth embodiments, and various configurations of the application member 5 can be employed. For example, an elastically deformable flap portion 49 is provided on the outer peripheral portion of the coating roller 47 as in the ink jet printing apparatus 1E shown in FIG. 12, and the printing material T is utilized by utilizing the elastic deformation of the flap portion 49 when the coating roller 47 rotates. It is possible to apply the penetrating liquid S to a wider area of the other surface 9.
In FIG. 12, the flap portion 49 is provided over the entire circumference of the outer peripheral portion of the application roller 47, but the illustration is shown only partially in order to avoid complication of the drawing, and the remaining illustration is omitted. Has been.

  Moreover, the movement of the application | coating operation | movement part 11 of the application | coating member 5 is not restricted to performing simultaneously with conveyance of the to-be-printed material T like each said Example. For example, in the case of the inkjet printing apparatus 1 that performs printing for each band that performs printing in a certain range in the transport direction A at a time, the material to be printed T moves after a predetermined band amount of the coating member 5. It is also possible to perform the printing by discharging the ink C from the printing head 3 after the coating action unit 11 moves and performs the coating of the permeation liquid S.

  In Example 3 and Example 4, the structure using the application rollers 37, 39, and 43 as the application member 5 is shown. However, it is possible to use a structure including the application belt 29 of Example 2 instead of the application roller. It is. In this case, the drive pulley 31 and the driven pulley 33 are configured to be movable in the vertical direction (not only in the vertical direction, but also in a case where the drive pulley 31 is slightly tilted up and down), so that only the application action portion on the drive pulley 31 side is the nozzle It is possible to make the contact on the upstream side, or to contact the application acting part on the driven pulley 33 side on the downstream side of the nozzle.

1 inkjet printing apparatus, 3 printing head, 5 coating member, 6 nozzle array,
7 one side (front side, surface to be printed), 9 other side (back side, surface to be coated),
11 Application section, 13 Transport roller, 15 Control section, 17 Storage container,
19 coating roller, 21 coating adjusting blade, 23 recess, 25 liquid absorbing layer,
27 napped parts, 29 application belt, 31 driving pulley, 33 driven pulley,
35 tension pulley, 37 application roller, 39 application roller,
41 bearing roller, 43 coating roller, 45 moving mechanism, 47 coating roller,
49 Flap part, T printing material (fabric), C ink, S permeate,
A transport direction, M discharge area, L upstream area, N downstream area, D return direction

Claims (7)

A printing head for forming a printed image by ejecting ink on one side of the printing material;
An application member provided with an application action part that contacts the other surface of the material to be printed and applies the penetrant ;
The application operation unit includes an area facing the nozzle row of the printing head, a discharge area where ink is discharged from the head, and an upstream side of the discharge area in the transport direction of the printing material. An inkjet printing apparatus, wherein the inkjet printing apparatus is provided in at least one area of an upstream area and a downstream area located downstream of the discharge area in the conveyance direction of the printing material. In the inkjet printing apparatus according to claim 1,
The application portion is provided so as to be movable in a direction along the conveyance direction of the printing material,
An inkjet textile printing apparatus comprising a control unit that controls a moving speed of the coating operation unit. In the inkjet printing apparatus according to claim 2,
The application member includes an application roller that rotates in a direction along the conveyance direction of the printing material,
An inkjet printing apparatus, wherein an application portion of the application roller is provided in the upstream region. In the inkjet printing apparatus according to claim 2,
The coating member includes an endless belt-shaped coating belt having a coating action portion having a length covering the entire length of the nozzle row of the printing head,
An ink jet printing apparatus, wherein an application action portion of the application belt is provided in the discharged area. In the inkjet printing apparatus according to any one of claims 2 to 4,
A plurality of the application action portions are arranged at different positions in a region formed by the discharged region, the upstream region, and the downstream region,
The control unit switches the application member to be used between the case where the printing is first performed and the penetrating liquid is applied after the printing, and the case where the penetrating liquid is first applied and the printing is performed after the printing. Inkjet printing device. In the inkjet printing apparatus according to claim 2,
The application action portion of the application member is configured to be movable in each area of the discharged area, the upstream area, and the downstream area,
Switching the position of the coating operation unit between the case where the control unit performs printing first and applies the penetrating liquid after printing, and the case where the penetrating liquid is applied first and printing is performed after application. Inkjet printing apparatus characterized by the above. A method for producing a printed material, wherein printing is performed on one surface of a material to be printed using the inkjet printing apparatus according to any one of claims 1 to 6,
Manufactures printed matter by performing printing by ejecting ink onto the material to be printed and forming the printed image different from the surface on which the penetrant is applied to the material to be printed while supporting the material to be printed. A method for producing a printed product, comprising:

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