Recording method and recording apparatus

Abstract

To provide a recording method and a recording apparatus capable of suppressing deterioration in recording quality.SOLUTION: A method for recording on a fabric includes attaching a droplet of a treatment liquid 38 to the fabric, the treatment liquid containing a coagulant that coagulates an ink composition 37 containing pigment and an overcoat liquid containing resin, attaching a droplet of the ink composition 37 to the fabric, and attaching the overcoat liquid to the fabric, wherein a treatment droplet amount being a weight of the droplet of the treatment liquid 38 is equal to or less than an ink droplet amount being a weight of the droplet of the ink composition 37.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a recording method and a recording apparatus. [Background technology]

[0002] For example, as disclosed in Patent Document 1, there is an inkjet textile printing method which is an example of a recording method for recording on fabric by an inkjet system. In the inkjet textile printing method, a pretreatment liquid which is an example of a treatment liquid is applied to the fabric, and then an ink composition is applied to the fabric. The ink composition contains a pigment and a resin. The ink composition aggregates by reacting with the pretreatment liquid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-089288 A Summary of the Invention [Problem to be solved by the invention]

[0004] The resin contained in the ink composition of Patent Document 1 enhances the adhesion between the pigment and the fabric. However, the ink composition containing the resin has a high viscosity. When a highly viscous ink composition is discharged from a nozzle, the nozzle is prone to clogging. When the nozzle is clogged, the recording quality is reduced.

[0005] The resin can be contained in, for example, an overcoat liquid separately from the ink composition. The viscosity of the ink composition can be reduced by not including the resin. However, an ink composition with a low viscosity is likely to penetrate deep into the fabric. If the ink composition aggregates deep into the fabric, the color development is reduced, resulting in a decrease in recording quality. [Means for solving the problem]

[0006] A recording method that solves the above problem is a method of recording on a fabric, comprising the steps of adhering droplets of a treatment liquid containing an aggregating agent that aggregates an ink composition containing a pigment and an overcoat liquid containing a resin to the fabric, adhering droplets of the ink composition to the fabric, and adhering the overcoat liquid to the fabric, wherein a treatment droplet volume, which is the weight of the droplets of the treatment liquid, is less than or equal to an ink droplet volume, which is the weight of the droplets of the ink composition.

[0007] A recording device that solves the above problem includes an ejection section capable of ejecting droplets of an ink composition containing a pigment, the ejection section being capable of ejecting droplets of a treatment liquid containing an aggregating agent, the aggregating agent aggregating the ink composition and an overcoat liquid containing a resin, the treatment droplet volume, which is the weight of the droplets of the treatment liquid, being less than or equal to the ink droplet volume, which is the weight of the droplets of the ink composition, and the treatment liquid, the ink composition, and the overcoat liquid are applied to a fabric in this order. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of a first embodiment of a recording apparatus. [Diagram 2] FIG. 2 is a schematic plan view of the liquid ejection unit. [Diagram 3] FIG. 3 is a schematic cross-sectional view of a yarn that constitutes the fabric. [Figure 4] FIG. 4 is a schematic cross-sectional view of a yarn to which a treatment liquid is applied. [Diagram 5] FIG. 5 is a schematic cross-sectional view of a thread having an ink composition applied thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [First embodiment] A first embodiment of a recording method and a recording device will be described below with reference to the drawings. The recording device is, for example, an inkjet printer that records images such as characters and photographs by ejecting an ink composition onto a fabric.

[0010] In the drawings, the recording device 11 is placed on a horizontal plane, the direction of gravity is indicated by the Z axis, and directions along the horizontal plane are indicated by the X and Y axes. The X, Y, and Z axes are perpendicular to each other. <Recording device> 1, the recording device 11 may include a housing 12. The housing 12 accommodates various components that the recording device 11 includes.

[0011] The recording device 11 may include a control unit 13. The control unit 13 comprehensively controls the driving of each mechanism in the recording device 11. The control unit 13 controls various operations executed by the recording device 11.

[0012] The control unit 13 may be configured as a circuit including: α: one or more processors that execute various processes according to a computer program; β: one or more dedicated hardware circuits that execute at least some of the various processes; or γ: a combination thereof. The hardware circuit is, for example, an application specific integrated circuit. The processor includes a CPU and memory such as RAM and ROM, and the memory stores program code or instructions configured to cause the CPU to execute processes. The memory, i.e., computer-readable medium, includes any readable medium that can be accessed by a general-purpose or dedicated computer.

[0013] The recording apparatus 11 may include a conveyor belt 15 , a drying unit 16 , a liquid ejection unit 17 , a wiping unit 18 , and a capping unit 19 . The conveyor belt 15 and the drying unit 16 may be provided in a recording area PA. The recording area PA is an area where recording is performed on the fabric 22. The wiping unit 18 and the capping unit 19 may be provided in a maintenance area MA. The maintenance area MA is an area where maintenance of the liquid ejection units 17 is performed. The recording area PA and the maintenance area MA are provided side by side in the scanning direction X. The scanning direction X may be a direction parallel to the X-axis.

[0014] The conveyor belt 15 is configured to support the fabric 22. The conveyor belt 15 is, for example, a circular belt. The conveyor belt 15 rotates to convey the fabric 22 in a conveying direction Y. The conveying direction Y may be a direction parallel to the Y axis.

[0015] The drying section 16 may be provided at least one of an upstream position and a downstream position in the transport direction Y from the liquid ejection unit 17. The drying section 16 dries the recorded fabric 22. The drying section 16 may include a heater (not shown). The drying section 16 may heat the fabric 22. The drying section 16 may promote drying of the recorded fabric 22 by preheating the fabric 22 before recording. The drying section 16 may heat the recorded fabric 22. The drying section 16 may heat at least one of the front and back surfaces of the fabric 22. The drying section 16 may apply hot air to the fabric 22.

[0016] The liquid discharge unit 17 is capable of discharging liquid onto the transported fabric 22. The liquid discharge unit 17 may include a carriage 25 and a discharge section 26. The discharge section 26 is mounted on the carriage 25.

[0017] The carriage 25 is capable of reciprocating in the scanning direction X. The carriage 25 moves the ejection units 26 across the recording area PA and the maintenance area MA. The ejection section 26 may include one or more heads 27. The head 27 has a nozzle surface 28. A plurality of nozzles 29 are opened in the nozzle surface 28. The ejection section 26 is capable of ejecting liquid from each nozzle 29 in an ejection direction Z. The ejection direction Z may be a direction perpendicular to the nozzle surface 28. The ejection direction Z may be a direction parallel to the Z axis.

[0018] Of the multiple nozzles 29, a group of nozzles 29 that eject the same type of liquid is also referred to as a nozzle group 30. The liquid ejection unit 17 has multiple nozzle groups 30. The multiple nozzle groups 30 may each eject a different liquid. At least two of the multiple nozzle groups 30 may eject the same liquid.

[0019] The wiping unit 18 is configured to wipe the nozzle surface 28. The wiping unit 18 may include a wiping unit 31. The wiping unit 31 may wipe the multiple heads 27 one by one, or may wipe them all at once. The wiping unit 31 may be, for example, a strip-shaped member capable of absorbing liquid. The wiping unit 18 may perform wiping by moving the wiping unit 31 back and forth in the transport direction Y.

[0020] The capping unit 19 includes one or more caps 32. The capping unit 19 may include a plurality of caps 32 for one head 27. The capping unit 19 may include the same number of caps 32 as the number of heads 27, or may include one cap 32 for the plurality of caps 32.

[0021] 1 and a capping position (not shown). The capping position is a position where the cap 32 caps the head 27.

[0022] Head 27 is configured to eject liquid. Head 27 scans fabric 22. Head 27 performs recording on fabric 22 in recording area PA. Head 27 ejects liquid while moving in scanning direction X, thereby recording on fabric 22 supported by conveyor belt 15. Head 27 ejects liquid onto fabric 22 when conveyance is stopped. Recording device 11 of this embodiment is a serial printer.

[0023] As shown in FIG. 2, the liquid ejection unit 17 of this embodiment includes eleven heads 27. When the multiple heads 27 are to be distinguished from one another, they are also referred to as a first head 27a to an eleventh head 27k. The first head 27a to the ninth head 27i may be arranged side by side in the scanning direction X. The tenth head 27j and the eleventh head 27k may be arranged side by side in the scanning direction X. The tenth head 27j to the eleventh head 27k may be arranged downstream of the first head 27a to the ninth head 27i in the transport direction Y. The first head 27a and the tenth head 27j may be arranged side by side in the transport direction Y. The ninth head 27i and the eleventh head 27k may be arranged side by side in the transport direction Y.

[0024] The nozzle group 30 may have one or more nozzle rows 35. The nozzle row 35 is composed of a plurality of nozzles 29 aligned in the transport direction Y. In this embodiment, the nozzle group 30 is composed of four nozzle rows 35. The four nozzle rows 35 constituting one nozzle group 30 are positioned so as to be shifted from one another in the scanning direction X and the transport direction Y.

[0025] For example, the first head 27a to the fourth head 27d and the sixth head 27f to the ninth head 27i are each capable of ejecting droplets of the ink composition 37 shown in Fig. 4. For example, the fifth head 27e is capable of ejecting droplets of the treatment liquid 38 shown in Fig. 3. For example, the tenth head 27j and the eleventh head 27k are capable of ejecting droplets of the overcoat liquid 39 shown in Fig. 5. That is, the ejection section 26 is capable of ejecting droplets of the treatment liquid 38, the ink composition 37, and the overcoat liquid 39, respectively.

[0026] The ejection unit 26 may be capable of changing the weight of the droplets to be ejected. The ejection unit 26 may change the weight of the droplets in stages. The ejection unit 26 of this embodiment is capable of ejecting three types of droplets: small dots, medium dots, and large dots. The droplets of small dots are lighter in weight than the droplets of medium dots. The droplets of large dots are heavier than the droplets of medium dots.

[0027] <Ink composition> The ink composition 37 contains a pigment. A pigment is a type of coloring material. The ink composition 37 is a liquid for coloring the fabric 22. The ejection unit 26 may eject, for example, a plurality of types of ink compositions 37 having different colors. Each head 27 may eject a plurality of types of ink compositions 37. The ink compositions 37 may contain different pigments depending on the type. The color of the ink composition 37 can be selected arbitrarily, for example, from black, white, cyan, magenta, yellow, green, red, and orange.

[0028] As the pigment, for example, an inorganic pigment or an organic pigment can be used. Examples of inorganic pigments include carbon blacks and white inorganic oxides. Examples of carbon black include furnace black, lamp black, acetylene black, channel black, etc. Examples of white inorganic oxides include iron oxide, titanium oxide, zinc oxide, silica, etc.

[0029] Examples of organic pigments include quinacridone pigments, quinacridonequinone pigments, dioxazine pigments, phthalocyanine pigments, anthrapyrimidine pigments, anthanthrone pigments, indanthrone pigments, flavanthrone pigments, perylene pigments, diketopyrrolopyrrole pigments, perinone pigments, quinophthalone pigments, anthraquinone pigments, thioindigo pigments, benzimidazolone pigments, isoindolinone pigments, azomethine pigments, and azo pigments.

[0030] <Processing solution> The treatment liquid 38 contains an aggregating agent. The aggregating agent aggregates the ink composition 37 and the overcoat liquid 39. The treatment liquid 38 is a liquid that hardens or thickens the ink composition 37 and the overcoat liquid 39.

[0031] The treatment liquid 38 of this embodiment contains a polyvalent metal salt as a flocculant. The polyvalent metal salt is composed of divalent or higher polyvalent metal ions and anions that bind to these polyvalent metal ions. The polyvalent metal salt is a compound that is soluble in water. Specifically, calcium salts, magnesium salts, etc. can be used as the polyvalent metal salt.

[0032] <Overcoat liquid> The overcoat liquid 39 contains a resin. The overcoat liquid 39 is a liquid containing a component that protects the image recorded on the fabric 22. The overcoat liquid 39 enhances the adhesion between the ink composition 37 and the fabric 22.

[0033] For example, the overcoat liquid 39 contains anionic resin particles. Examples of the anionic resin particles include those having anionic properties among resin particles made of urethane resin, acrylic resin, fluorene resin, polyolefin resin, rosin-modified resin, terpene resin, polyester resin, polyamide resin, epoxy resin, vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, ethylene vinyl acetate resin, silicone-acrylic resin, etc. The acrylic resin may be a styrene-acrylic resin.

[0034] <Fabric> 3, fabric 22 is composed of a plurality of threads 41. For example, fabric 22 is a woven fabric in which a plurality of threads 41 are combined lengthwise and widthwise. One thread 41 is composed of a plurality of fibers 42. For example, thread 41 is spun by twisting a plurality of fibers 42.

[0035] <How to record on fabric> When recording on fabric 22, control unit 13 moves carriage 25 back and forth in scanning direction X. Control unit 13 causes moving ejection unit 26 to eject droplets of treatment liquid 38, ink composition 37, and overcoat liquid 39. Control unit 13 may transport fabric 22 at the timing when carriage 25 turns back.

[0036] Discharge unit 26 records an image on fabric 22 by discharging droplets toward multiple points on fabric 22. Discharge unit 26 deposits treatment liquid 38, ink composition 37, and overcoat liquid 39 onto each point on fabric 22. Discharge unit 26 deposits droplets of treatment liquid 38, ink composition 37, and overcoat liquid 39 onto fabric 22 in that order.

[0037] <Operation of the First Embodiment> The operation of the first embodiment will be described. 3, the discharge unit 26 deposits droplets of the treatment liquid 38 onto the fabric 22. At this time, the discharge unit 26 deposits the treatment liquid 38 in small dots. The treated droplet amount, which is the weight of the droplets of the treatment liquid 38, may be constant regardless of the image. In other words, the discharge unit 26 deposits small dots of droplets of the treatment liquid 38 onto each point of the fabric 22, regardless of the image.

[0038] 4, small dots of droplets of treatment liquid 38 are unlikely to penetrate deep into fabric 22. Therefore, treatment liquid 38 remains on the surface of fabric 22. Next, the ejection unit 26 deposits droplets of the ink composition 37 onto the fabric 22. At this time, the ejection unit 26 ejects the ink composition 37 in any of small dots, medium dots, and large dots. The ink droplet volume, which is the weight of the droplets of the ink composition 37, may be changed according to the image to be recorded. For example, droplets of small dots with a small ink droplet volume may be deposited on parts of the image with high brightness. Droplets of large dots with a large ink droplet volume may be deposited on parts of the image with low brightness. The ejection unit 26 ejects the ink droplet volume at a volume equal to or greater than the treated droplet volume. In other words, the ejection unit 26 ejects the ink droplet volume at a volume equal to or less than the treated droplet volume.

[0039] 5, the ink composition 37 attached to the fabric 22 reacts with the treatment liquid 38 remaining on the surface of the fabric 22. As a result, the ink composition 37 aggregates near the surface of the fabric 22. The aggregated ink composition 37 has reduced fluidity. Therefore, even if the amount of ink droplets is large, the ink composition 37 does not easily penetrate deep into the fabric 22.

[0040] The discharge unit 26 applies the overcoat liquid 39 to the fabric 22 to which the treatment liquid 38 and the ink composition 37 are applied. At this time, the discharge unit 26 discharges the overcoat liquid 39 in small dots. The coat droplet amount, which is the weight of the droplets of the overcoat liquid 39, may be equal to or less than the ink droplet amount.

[0041] The overcoat liquid 39 attached to the fabric 22 reacts with the treatment liquid 38 remaining on the surface of the fabric 22. As a result, the overcoat liquid 39 aggregates near the surface of the fabric 22. The aggregated overcoat liquid 39 has a reduced fluidity. As a result, the overcoat liquid 39 is likely to remain on the surface of the fabric 22.

[0042] The drying unit 16 evaporates the water contained in the treatment liquid 38, the ink composition 37, and the overcoat liquid 39. The drying unit 16 dissolves the resin contained in the overcoat liquid 39. The resin cools and hardens after drying, covering the image recorded on the fabric 22. This makes it possible to protect the image recorded on the fabric 22 from loads such as friction.

[0043] <Advantages of the First Embodiment> The effects of this embodiment will be described. (1-1) The recording device 11 uses an overcoat liquid 39 containing a resin. This allows the use of an ink composition 37 with a low viscosity, which can suppress clogging of the nozzle 29 that ejects the ink composition 37. The amount of treated droplets is equal to or less than the amount of ink droplets. Lightweight droplets tend to remain on the surface of the fabric 22 compared to heavy weight droplets. Therefore, the ink composition 37 and the overcoat liquid 39 can be aggregated near the surface of the fabric 22 by the treatment liquid 38 that remains near the surface. This can suppress deterioration in adhesion between the pigment and the fabric 22 and in color development. Therefore, deterioration in recording quality can be suppressed.

[0044] (1-2) An organic acid, which is an example of a flocculant, is difficult to handle because it may corrode metal. In this regard, the treatment liquid 38 contains a polyvalent metal salt. The polyvalent metal salt is a stable salt and can be easily handled.

[0045] (1-3) The amount of the coating droplet is equal to or less than the amount of the ink droplet. By making the overcoat liquid 39 more likely to remain near the surface of the fabric 22, it is possible to make it easier for the overcoat liquid 39 to cover the treatment liquid 38 and the ink composition 37.

[0046] (1-4) By changing the ink droplet amount according to the image, it is possible to easily express gradation. By making the droplet weight of the treatment liquid 38 constant regardless of the image, it is possible to reduce the load of control.

[0047] [Second embodiment] Next, a second embodiment of the recording method and recording apparatus will be described with reference to the drawings. Note that the second embodiment differs from the first embodiment in the way in which the treatment liquid is ejected. Since the second embodiment is otherwise almost the same as the first embodiment, the same components are denoted by the same reference numerals and a duplicated description will be omitted.

[0048] The treated droplet volume may be variable. The treated droplet volume may be variable within a range equal to or less than the ink droplet volume. Thus, the treated droplet volume is equal to or less than the ink droplet volume. For example, the treated droplet volume may be varied in response to at least one of the ink droplet volume and the coat droplet volume.

[0049] The amount of treated droplets may be changed depending on the image to be recorded. Small dot droplets of treatment liquid 38 and small dot droplets of ink composition 37 may be deposited on parts of the image with high brightness. Medium dot droplets of treatment liquid 38 and large dot droplets of ink composition 37 may be deposited on parts of the image with low brightness.

[0050] When discharging the overcoat liquid 39 in small dots, the discharging unit 26 may make the droplets of the treatment liquid 38 into small dots. When discharging the overcoat liquid 39 in medium dots, the discharging unit 26 may make the droplets of the treatment liquid 38 into medium dots.

[0051] The drying section 16 may dry the recorded fabric 22 under drying conditions according to the amount of droplets to be processed. For example, the drying section 16 may set a lower drying temperature when the amount of droplets to be processed is small than when the amount of droplets to be processed is large. The drying section 16 may set a shorter drying time when the amount of droplets to be processed is small than when the amount of droplets to be processed is large.

[0052] <Operation of the Second Embodiment> The operation of this embodiment will be described. The droplets of the treatment liquid 38 forming medium dots are less likely to penetrate deep into the fabric 22 than the droplets of the treatment liquid 38 forming large dots. Therefore, the ink composition 37 and the overcoat liquid 39 aggregate in a position close to the surface of the fabric 22.

[0053] <Effects of the second embodiment> The effects of this embodiment will be described. (2-1) The drying unit 16 changes the drying conditions according to the amount of droplets to be processed. For example, when the amount of droplets to be processed is small, the drying time can be shortened or the drying temperature can be lowered. By shortening the drying time, the time required for recording can be shortened. By lowering the drying temperature or shortening the drying time, the load on the fabric 22 can be reduced.

[0054] (2-2) When the amount of treatment liquid 38 is insufficient relative to the amount of ink composition 37 and overcoat liquid 39, there is a risk that the ink composition 37 and overcoat liquid 39 cannot be sufficiently aggregated. The ink composition 37 and overcoat liquid 39 that do not aggregate may penetrate deep into the fabric 22. In this regard, the amount of treatment droplets can be changed according to at least one of the ink droplet amount and the coat droplet amount. Therefore, by ejecting an amount of treatment liquid 38 that matches the amount of ink composition 37 and overcoat liquid 39, the risk that the ink composition 37 and overcoat liquid 39 will penetrate deep into the fabric 22 can be reduced.

[0055] [Example of change] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

[0056] The amount of treatment drops may be changed depending on the type of fabric 22. For example, the ease with which the liquid penetrates into the fabric 22 varies depending on the strength of twist in the yarn 41. A tightly twisted yarn 41 is less likely to penetrate than a loosely twisted yarn 41. The amount of treatment drops applied to a fabric 22 that is easily permeable to the liquid may be smaller than the amount of treatment drops applied to a fabric 22 that is less easily permeable to the liquid.

[0057] The drying section 16 may dry the fabric 22 under drying conditions according to the type of the fabric 22. For example, if the fabric 22 is sensitive to heat, the drying temperature may be lowered. The amount of ink droplets may be constant regardless of the image.

[0058] The coat drop volume may be larger than the ink drop volume. The recording device 11 may include a mechanism for applying the overcoat liquid 39 to the fabric 22, separate from the discharge unit 26. For example, the recording device 11 may include an application unit that applies the overcoat liquid 39 to the fabric 22. The recording device 11 may include a spray unit that sprays the overcoat liquid 39 onto the fabric 22.

[0059] The treatment liquid 38 may contain an organic acid as a flocculant. In this case, the treatment liquid 38 may not contain a polyvalent metal salt. Suitable examples of the organic acid include phosphoric acid, polyacrylic acid, acetic acid, glycolic acid, malonic acid, malic acid, maleic acid, ascorbic acid, succinic acid, glutaric acid, fumaric acid, citric acid, tartaric acid, lactic acid, sulfonic acid, orthophosphoric acid, pyrrolidone carboxylic acid, pyrone carboxylic acid, pyrrole carboxylic acid, furan carboxylic acid, pyridine carboxylic acid, coumaric acid, thiophene carboxylic acid, nicotinic acid, derivatives of these compounds, and salts of these compounds.

[0060] The fabric 22 may be, for example, a woven fabric, a knitted fabric, a felt, a nonwoven fabric, or the like. Recording device 11 may be a line printer capable of ejecting liquid across the width direction of fabric 22. Recording device 11 may be a garment printer that moves ejection unit 26 back and forth in scanning direction X and transport direction Y.

[0061] [Definition] The term "at least one" as used herein means "one or more" of the desired options. As an example, the term "at least one" as used herein means "only one option" or "both of two options" if the number of options is two. As another example, the term "at least one" as used herein means "only one option", "any combination of two options", or "any combination of three or more options" if the number of options is three or more.

[0062] [Note] The technical ideas and effects obtained from the above-described embodiment and modified examples will be described below.

[0063] (A) A recording method is a method for recording on a fabric, comprising: depositing droplets of a treatment liquid containing an aggregating agent that aggregates an ink composition containing a pigment and an overcoat liquid containing a resin onto the fabric; depositing droplets of the ink composition onto the fabric; and depositing the overcoat liquid onto the fabric, wherein a treatment droplet volume, which is the weight of the droplets of the treatment liquid, is less than or equal to an ink droplet volume, which is the weight of the droplets of the ink composition.

[0064] According to this method, an overcoat liquid containing a resin is used. This allows the use of an ink composition with a low viscosity, thereby suppressing the occurrence of clogging of the nozzle that ejects the ink composition. The amount of treated droplets is equal to or less than the amount of ink droplets. Droplets with a small weight are more likely to remain on the surface of the fabric than droplets with a large weight. Therefore, the ink composition and the overcoat liquid can be aggregated near the surface of the fabric by the treatment liquid that remains near the surface. This makes it possible to suppress a decrease in adhesion between the pigment and the fabric and in color development. Therefore, a decrease in recording quality can be suppressed.

[0065] In the recording method (B), the treatment liquid may contain a polyvalent metal salt. An organic acid, which is an example of a flocculant, is difficult to handle because it may corrode metals. In this regard, according to this method, the treatment liquid contains a polyvalent metal salt. The polyvalent metal salt is a stable salt and can be easily handled.

[0066] In the recording method (C), a coating droplet amount, which is a weight of a droplet of the overcoat liquid applied to the fabric, may be equal to or less than the ink droplet amount. According to this method, the amount of the coat droplet is equal to or less than the amount of the ink droplet. By making the overcoat liquid more likely to remain near the surface of the fabric, it is possible to make it easier for the overcoat liquid to cover the treatment liquid and the ink composition.

[0067] In the recording method (D), the ink droplet volume may be changed depending on the image to be recorded, and the treated droplet volume may be constant regardless of the image. According to this method, by changing the ink droplet volume according to the image, it is possible to easily express gradation. By keeping the droplet weight of the treatment liquid constant regardless of the image, it is possible to reduce the load of control.

[0068] (E) In the recording method, the amount of droplets to be treated may be changeable, and the method may further include drying the recorded fabric under drying conditions corresponding to the amount of droplets to be treated. According to this method, the drying conditions are changed according to the amount of droplets to be processed. For example, when the amount of droplets to be processed is small, the drying time can be shortened or the drying temperature can be lowered. By shortening the drying time, the time required for recording can be shortened. By lowering the drying temperature or shortening the drying time, the load on the fabric can be reduced.

[0069] (F) The recording device includes an ejection section capable of ejecting droplets of an ink composition containing a pigment, the ejection section being capable of ejecting droplets of a treatment liquid containing an aggregating agent, the aggregating agent aggregating the ink composition and an overcoat liquid containing a resin, a treatment droplet volume which is the weight of the droplets of the treatment liquid being equal to or less than an ink droplet volume which is the weight of the droplets of the ink composition, and the treatment liquid, the ink composition, and the overcoat liquid are applied to the fabric in this order.

[0070] According to this configuration, it is possible to achieve the same effects as the above-mentioned recording method. [Explanation of symbols]

[0071] 11...recording device, 12...housing, 13...control unit, 15...conveyor belt, 16...drying unit, 17...liquid ejection unit, 18...wiping unit, 19...capping unit, 22...fabric, 25...carriage, 26...ejection unit, 27...head, 27a to 27k...first head to eleventh head, 28...nozzle surface, 29...nozzle, 30...nozzle group, 31...wiping unit, 32...cap, 35...nozzle row, 37...ink composition, 38...treatment liquid, 39...overcoat liquid, 41...yarn, 42...fiber, MA...maintenance area, PA...recording area, X...scanning direction, Y...conveyance direction, Z...ejection direction.

Claims

1. A method for recording on a fabric, comprising the steps of: depositing droplets of a treatment liquid containing an aggregating agent that aggregates an ink composition containing a pigment and an overcoat liquid containing a resin onto the fabric; depositing droplets of the ink composition onto the fabric; applying the overcoat liquid to the fabric; Including, a treatment droplet volume, which is a weight of a droplet of the treatment liquid, being equal to or less than an ink droplet volume, which is a weight of a droplet of the ink composition;

2. 2. The recording method according to claim 1, wherein the treatment liquid contains a polyvalent metal salt.

3. 3. The recording method according to claim 1, wherein a coating droplet amount, which is a weight of the droplets of the overcoat liquid applied to the fabric, is equal to or less than the ink droplet amount.

4. The ink droplet volume is changed according to the image to be recorded, 3. The recording method according to claim 1, wherein the amount of droplets to be treated is constant regardless of the image.

5. The amount of the droplets to be treated is variable; 3. The recording method according to claim 1, further comprising drying the recorded fabric under drying conditions corresponding to the amount of treated droplets.

6. a discharge part capable of discharging droplets of an ink composition containing a pigment, the ejection unit is capable of ejecting droplets of a treatment liquid containing an aggregating agent, The aggregating agent aggregates the ink composition and the overcoat liquid containing a resin, a treatment droplet volume, which is a weight of a droplet of the treatment liquid, is equal to or less than an ink droplet volume, which is a weight of a droplet of the ink composition, A recording apparatus comprising: a recording medium; a recording unit for recording a recording medium on which the recording medium is to be printed;

Images