JP5410875B2 - Inkjet recording apparatus and inkjet recording method - Google Patents

Description

  The present invention relates to ink jet recording (printing) on a fabric.

  In recent years, an ink jet recording apparatus is known as an apparatus for recording on a recording medium. The ink jet recording apparatus performs recording by ejecting ink from nozzles formed on a recording head, and has an advantage that a high-precision image can be easily recorded at a high speed. Various techniques have been proposed for inkjet recording apparatuses (see, for example, Patent Documents 1 to 4).

  For example, Patent Document 1 discloses a print including an introduction unit, a conveyance unit, a printing unit, a preliminary drying unit, a drying unit and a shake-off unit, a data creation / editing unit, a color adjustment unit, an image data storage unit, and a fixing unit. An apparatus is disclosed. In this printing apparatus, the conveyance unit is disposed adjacent to the introduction unit, and includes a conveyance belt spanned between the rolls, a plurality of adhesive application rolls, and a plurality of brush rolls (belt surface cleaning), and is introduced from the introduction unit. It is a part which conveys the used cloth to the printing part side with a conveyance belt. The conveying unit applies the adhesive to the conveying belt with a plurality of application rolls, presses the fabric introduced from the introducing unit against the conveying belt with a pressing roll, and conveys the fabric in this state. The adhesive is water-based or oil-based. The print part is a part that draws a pattern, characters, etc. on the fabric by the continuous discharge charge control type ink jet method, and is arranged to be opposed to the entire width of the transport belt in the direction perpendicular to the transport direction of the fabric, and the number of colors of ink to be used. It has a corresponding 8 rows of line heads. The preliminary drying part is a part that dries at least 20% or more of the evaporation component in the ink from the fabric subjected to the printing process by a heater or the like. The fabric printed by the printing unit is peeled off from the transport belt by the tension applied from the tension roll downstream of the printing unit. At this time, the printed fabric is not preferable because the ink is faded or mixed when it touches a surrounding member such as a tension roll before the evaporation component in the ink droplet is dried by a predetermined amount. Drying is performed for the purpose of preventing such fading. The drying part is a part that further evaporates, for example, 85% or more of the evaporation component in the ink from the fabric dried in the preliminary drying part.

  Patent Document 2 discloses an endless belt that is stretched over a plurality of rotating bodies and supports and conveys the cloth, a feeding means that feeds the cloth onto the endless belt, and ink on the cloth on the endless belt. An ink jet recording apparatus comprising: a recording means for discharging and recording; and a peeling means for peeling the recorded fabric from the endless belt, wherein the peeling means is applied from above the endless belt according to the degree of stretch of the fabric. An ink jet recording apparatus is disclosed in which the peeling position of the ink can be changed.

JP-A-9-239968 JP 2007-196625 A JP-A-6-270401 JP 2001-98474 A

  Incidentally, it is necessary to ensure suitable recording quality for ink jet recording on a fabric. Inkjet recording on the fabric is performed by adhering the fabric to the conveyance unit (adhering to the conveyance belt based on Patent Document 1). Therefore, it is necessary to appropriately peel the fabric from the conveyance unit at a predetermined timing after ink jet recording.

  An object of the present invention is to provide an ink jet recording apparatus and an ink jet recording method capable of producing a recorded matter that ensures a suitable recording quality in ink jet recording on a fabric adhered to a transport unit.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an ink jet recording that ejects ink and records an image indicated by image data input from an external device on a fabric adhered to an adhesive portion provided on an installation surface of a conveyance portion. for, peeling from the adhesive portion of the fabric on which an image is recorded (peeling operation), it was decided to perform a certain position in the transport direction downstream side of the fabric as a limit from the ink jet recording unit, in other words, the downstream The peeling is not performed beyond the position to the ink jet recording portion side.

A first problem-solving means that reflects the present invention is an ink jet recording apparatus that ejects ink and records an image indicated by image data input from an external apparatus, the supply section supplying a fabric, and the supply An adhesive portion that adheres the fabric supplied from a portion is provided on an installation surface on which the fabric is installed, and the fabric in a state of being adhered to the adhesive portion is disposed from the first position in the installation surface to the installation surface. It is arranged at a position above the installation surface between the first position and the second position and transported in a state of being adhered to the adhesive section. An ink jet recording unit that records the image with respect to the fabric to be performed, and a position within the installation surface that is downstream of the ink jet recording unit in the transport direction of the fabric, the first position and the second position, Between the positions A first drying unit disposed between the third position and the inkjet recording unit and at a position above the installation surface, and drying the fabric in a state where the image is recorded and adhered to the adhesive unit; , the fabric in a state in which the image is dried is recorded is adhered to the adhesive portion, to the second direction of the first position from the position of the fabric in a peeling unit for peeling, before Symbol third position state A first sensor for detecting the separation, and a separation control unit for stopping the separation unit being driven when the first sensor detects that the fabric is separated at the third position. This is an ink jet recording apparatus.

According to this, it is possible to limit the peeling position of the cloth from the adhesive part to a certain position, and the cloth in the range where the image is recorded in the ink jet recording part is adhered to the adhesive part. It can be. In other words, the image recording by the inkjet recording unit is performed in a state where the fabric in the range where the image recording is performed in the inkjet recording unit does not lift from the installation surface of the transport unit and is appropriately adhered to the adhesive unit. It can be performed. Quality problems related to recorded images can be solved.

The second problem solving means is the ink jet recording apparatus according to the first problem solving means, and includes a second sensor that detects the fabric adhered to the adhesive portion at the second position, and the peeling A control part drives the said peeling part which has stopped peeling operation | movement, when the said fabric of the state adhere | attached on the said adhesion part is detected by the said 2nd sensor. According to this, peeling by a peeling part can be started according to the conveyance state (conveyance position) of a fabric.

A third problem solving means is the ink jet recording apparatus according to the first or second problem solving means, characterized by comprising a second drying section for drying the fabric peeled from the adhesive section .

A fourth problem-solving means is an ink jet recording method for ejecting ink and recording an image indicated by image data input from an external device, the supply step of supplying the fabric, and a transport unit for transporting the fabric An adhesion step of adhering the supplied fabric to an adhesion portion provided on an installation surface of the installation surface, and the fabric in a state of being adhered to the adhesion portion from a first position within the installation surface, the installation surface The adhesion step is performed by the conveyance step of conveying in the direction of the second position, and the inkjet recording unit disposed between the first position and the second position and above the installation surface. to said fabric to be conveyed in a state of being, an ink jet recording process of recording the image, a position in the installation surface of the downstream side of the fabric from the inkjet recording unit, the first The image is recorded by a first drying unit disposed between a third position, which is a position between the printer and the second position, and the inkjet recording unit and at a position above the installation surface. A drying step of drying the fabric in a state of being adhered to the adhesive portion, and the fabric in a state of being recorded and dried and adhered to the adhesive portion from the second position to the first position. , and a peeling step of peeling, the peeling step is a first sensor for detecting the state of the fabric before Symbol third position, when the fabric is detected to be in a state of being peeled off, to be stopped An ink jet recording method characterized by the above. According to this, the function similar to the function (action) by the first problem solving means described above can be exhibited.

  ADVANTAGE OF THE INVENTION According to this invention, the inkjet recording device and inkjet recording method which can manufacture the recorded matter which ensured suitable recording quality can be obtained in the inkjet recording to the fabric adhere | attached on the conveyance part.

It is a figure which shows an inkjet recording device. It is a figure which shows a temporary drying part. It is a figure which shows the flowchart of a recording process. It is a figure explaining the recording quality based on the presence or absence of temporary drying about the fabric in which the image was recorded.

  Embodiments for implementing the above problem solving means reflecting the present invention will be described below in detail with reference to the drawings. The above-mentioned problem solving means is not limited to the configuration described below, and various configurations can be adopted in the same technical idea. For example, in each configuration described below, a predetermined configuration can be omitted.

(Inkjet recording device)
The ink jet recording apparatus 100 will be described with reference to FIG. The ink jet recording apparatus 100 ejects ink in accordance with image data input from an external apparatus (such as a personal computer), in other words, image data acquired from the external apparatus, and is indicated by the image data on the fabric 300 as a recording medium. This is a device for recording (printing) a printed image. The ink jet recording apparatus 100 includes a supply unit 110, a transport unit 120, an ink jet recording unit 130, a peeling unit 140, a first sensor 150, a second sensor 160, and a temporary drying unit 170 (in the “drying unit” of the third problem solving means). (For the third sensor 220 shown in FIG. 1, refer to a modified example (2) described later). The ink jet recording apparatus 100 includes an introduction roller 180, a nipple 190, a main drying unit 200, and a winding unit 210.

  The supply unit 110 is a mechanism for supplying the fabric 300 to the transport unit 120. A cloth 300 wound in a roll shape is set in the supply unit 110. The conveyance unit 120 conveys the fabric 300 supplied (carrying in) from the supply unit 110 via the introduction roller 180 to the inkjet recording unit 130, and the fabric 300 on which an image is recorded by the inkjet recording unit 130 is further included. It is a mechanism for transporting to a predetermined position.

The fabric 300 used in the inkjet recording apparatus 100 will be described. Any fabric 300 can be used regardless of whether it is a woven fabric, a knitted fabric or a non-woven fabric. As the material of the fabric 300, natural fibers such as cotton, hemp and wool, regenerated fibers such as rayon, semi-synthetic fibers such as acetate and triacetate, and synthetic fibers such as polyester, nylon, acrylic, polypropylene, polyethylene and polyurethane are used. . The fabric 300 is formed of these single materials, and is formed by combining two or more of them, such as blending or weaving. The thickness of the fabric 300 is preferably 0.5 to 2 mm, and the basis weight (mass per unit area) is preferably about 500 g / m ² or less.

  The conveyance unit 120 includes an endless belt 122 and a pair of belt rollers 124A and 124B. The outer peripheral surface of the endless belt 122 is an installation surface on which the fabric 300 supplied from the supply unit 110 is installed. On the outer peripheral surface of the endless belt 122, an adhesive portion 126 is provided (fixed) for adhering the fabric installed on the installation surface. The adhesive portion 126 is formed by an adhesive tape attached to the installation surface. The nipple 190 is disposed at the first position 120X of the transport unit 120 in a state of being substantially in contact with the installation surface (adhesive unit 126) of the endless belt 122. The nipple 190 presses the fabric 300 toward the transport unit 120 at the first position 120X. The pressed fabric 300 adheres to the adhesive portion 126. The first position 120X is a predetermined position on one end side (belt roller 124A side) of the transport unit 120.

  Here, the pressing force by the nipple 190 is set to a range of about 500 hPa or less. Moreover, the tape which has the adhesive force (adhesive force) of about 5-20N is used for the adhesive tape which forms the adhesion part 126. FIG. The adhesive force is necessary to peel the pretreated polyester fabric from the adhesive tape when the pretreated polyester fabric measuring 200 mm long × 200 mm wide is pressed against the adhesive tape by the pressing force of the nipple 190 described above. Defined as force.

  The belt rollers 124A and 124B are rotated by a predetermined first drive mechanism (motor or the like / not shown in FIG. 1). For example, when the belt rollers 124A and 124B rotate clockwise (see arrow “1” in FIG. 1), the endless belt 122 moves in the same direction. With the rotation of the endless belt 122, the fabric 300 is conveyed in the direction of the second position 120Y, in other words, in the direction of the inkjet recording unit 130 in a state of being adhered to the adhesive portion 126 (arrow “2” in FIG. 1). reference). The second position 120Y is a predetermined position on the other end side (belt roller 124B side) of the transport unit 120. Further, the direction of the arrow “2” in which the fabric 300 is transported by the transport unit 120 is also referred to as “transport direction”.

  The ink jet recording unit 130 includes a recording head (not shown in FIG. 1) disposed at a position facing the installation surface of the transport unit 120, and nozzles formed on the recording heads according to image data from an external device. Ink is discharged from the nozzle. The ejected ink is supplied from an ink tank (not shown in FIG. 1) provided in the inkjet recording apparatus 100. The inkjet recording unit 130 includes a plurality of recording heads, and inks of different colors are ejected from each recording head. For example, cyan, magenta, yellow, and black ink are supplied to each recording head, and each color ink is ejected from each recording head. The ink jet recording unit 130 can be either a scanning type or a line type.

  The ink used for image recording in the inkjet recording unit 130 will be described. As the ink used for recording, a water-based ink containing a colorant and an additive and using water as a medium is used. The viscosity of the water-based ink is about 1 to 10 cps. As the colorant used in the ink, a reactive dye, an acid dye, a direct dye, a disperse dye or the like can be used, and a pigment can also be used. In addition, a dispersant, an antifoaming agent, a penetrating agent, a deep dyeing agent, a pH adjusting agent, and the like can be added to the ink as necessary.

  The peeling unit 140 is intermittently rotated in the counterclockwise direction by a predetermined second driving mechanism (such as a motor / not shown in FIG. 1) (see arrow “3” in FIG. 1). The rotation speed is set to 0.01 to 0.1 m per second. That is, when the peeling unit 140 rotates counterclockwise at a speed of 0.01 to 0.1 m per second, an image is recorded and the fabric 300 conveyed by the conveying unit 120 is pulled toward the peeling unit 140 side. . Thereby, the fabric 300 is peeled from the adhesive portion 126 at a speed of 0.01 to 0.1 m per second in the direction from the second position 120Y to the first position 120X (inkjet recording unit 130). In the peeling unit 140, the traveling direction of the fabric 300 on which an image is recorded by the inkjet recording unit 130 is 30 to 90 degrees with respect to the installation surface (adhesive unit 126) of the endless belt 122 (see “θ” in FIG. 1). It is arranged at the position. The outer peripheral surface of the peeling portion 140 (the surface in contact with the fabric 300) is in a state in which a predetermined frictional force is generated with the fabric 300. The peeling unit 140 may be configured to include the second drive mechanism as an integral unit. However, for example, the peeling unit 140 may be configured separately from the peeling unit 140 (specifically, the main body portion of the peeling unit 140). The driving mechanism may be configured to transmit the driving mechanism to the main body portion of the peeling unit 140 via, for example, a timing belt or a gear.

The first sensor 150 is a transmissive sensor. The first sensor 150 is disposed opposite to the installation surface of the transport unit 120 at the third position 120Z, and detects the state of the fabric 300 at the third position 120Z. Specifically, the first sensor 150 detects whether or not the fabric 300 is peeled from the adhesive portion 126 at the third position 120Z. The third position 120Z is a position in the installation surface of the conveyance direction downstream side of the fabric 300 from the ink jet recording unit 130, a position between the first position 120X and a second position 120Y. In other words, it is the position in the installation surface between the inkjet recording unit 130 and the second position 120Y.

  The second sensor 160 is a transmissive sensor. The second sensor 160 is disposed opposite to the installation surface of the conveyance unit 120 at the second position 120Y, and detects the fabric 300 adhered to the adhesion unit 126. Specifically, the second sensor 160 detects the fabric 300 in a state where an image is recorded by the inkjet recording unit 130 and is adhered to the adhesive unit 126 at the second position 120Y.

  The temporary drying unit 170 is a mechanism for temporarily drying the fabric 300 on which an image is recorded by the inkjet recording unit 130. The temporary drying unit 170 includes an air curtain 172, an air volume generation blower 174, and a tube 176 that connects these and serves as a flow path for the air from the air volume generation blower 174 (see FIG. 2). The air curtain 172 is made of a PVC pipe and has a length of about 1 to 2 m. In the air curtain 172, slits 178 having a width of about 1 to 2 mm are formed at intervals of 1 cm, for example. The air volume generation blower 174 supplies air to the air curtain 172 via the tube 176, and the supplied air is ejected from the slit 178.

  The temporary drying unit 170 is disposed between the third position 120Z and the inkjet recording unit 130 and at a position above the installation surface of the transport unit 120. Specifically, the air curtain 172 has a position of 0.3 to 0.6 m on the downstream side in the transport direction of the fabric 300 from the inkjet recording unit 130, in other words, 0.1 to 0.1 on the upstream side in the transport direction from the third position 120 </ b> Z. It is disposed at a position of 0.3 m and about 40 mm above the installation surface of the conveyance unit 120. The air curtain 172 is attached in a direction in which the slit 178 faces the installation surface. From the slit 178, the wind from the air volume generation blower 174 is always ejected.

  Here, it is preferable that the temperature of the air injected is normal temperature (25-50 degreeC). When it is less than 25 ° C., it becomes difficult to dry, and when it exceeds 50 ° C., the auxiliary agent contained in the pretreatment agent is activated by heat. Further, when the colorant used for the ink is a dye, the color stability of the dye is deteriorated, the quality at the time of color development is not stable, and there is a possibility that the fabric 300 having no heat resistance may be adversely affected.

It is preferable that the wind speed to be injected is 1 to 2 m / s and the air volume is in the range of 9.6 to 19.2 m ³ / min. If the air speed and air volume are below this range, sufficient drying capacity cannot be obtained. Further, when the colorant of the ink is a dye, if it exceeds this range, the dye becomes easy to move and the dyeing stability cannot be obtained. Furthermore, the way the wind strikes the surface of the fabric 300 is likely to be non-uniform, and therefore the side effect that the fabric 300 undulates easily occurs.

  The ink application rate A (hereinafter also referred to as “ink application rate A immediately after temporary drying”) (%) (%) of the fabric 300 temporarily dried by the temporary drying unit 170 is about 80% or less (specifically, 54 to 74). %). The movement of the dye after drying can be suppressed and quality defects can be prevented. The ink application rate A (%) immediately after temporary drying is A (%) = B (g) when the ink application amount immediately after image recording is B (g) and C (g) after the temporary drying. C / B × 100. As for the ink application amount B (g) immediately after image recording, the mass of a pre-processed fabric of 150 mm length × 150 mm width (fabric before recording) was measured, and a solid pattern of 100 mm length × 100 mm width was recorded on this pre-processed fabric. The mass is a value (mass difference) calculated by measuring the mass of the pretreated fabric immediately after recording (the fabric after recording) and subtracting the mass of the fabric before recording from the mass of the fabric after recording. In addition, the ink application amount C (g) immediately after the temporary drying is obtained by temporarily drying the post-recording fabric, measuring the mass of the post-recording fabric immediately after the temporary drying, and determining the mass of the pre-recording fabric from the mass of the post-recording fabric immediately after the temporary drying. It is a value (mass difference) calculated by subtracting the mass.

  The main drying unit 200 is a mechanism for performing main drying on the fabric 300 on which an image is recorded by the ink jet recording unit 130, temporarily dried by the temporary drying unit 170, and peeled from the adhesive unit 126 by the peeling unit 140. The inside of the main drying unit 200 (main drying zone) is maintained at a normal temperature (25 to 50 ° C.) and a low humidity (20% or less). The fabric 300 is finally dried using an air flow generator or the like (not shown in FIG. 1) inside the main drying unit 200 held in such a state.

The ink application rate A ′ (%) immediately after the main drying is calculated by actually drying the post-recording fabric, measuring the mass of the fabric immediately after the main drying, and subtracting the mass of the pre-recording fabric from the mass of the fabric immediately after the main drying. Using the ink application amount C ′ (g) immediately after the main drying, which is the calculated value (mass difference), calculation is performed in the same manner as the ink application rate A (%) immediately after the temporary drying (A ′ = C ′ / B × 100). The ink application rate A ′ (%) immediately after the main drying is about 30% or less (specifically, about 16 to 28%). Compared to the ink application rate immediately after the temporary drying, it is reduced by about 50% (specifically, about 38 to 58%).

  The fabric 300 that has been completely dried by the main drying unit 200 is sequentially wound by the winding unit 210 and supplied to the next step. Specifically, it is sequentially supplied to each process such as a coloring process, an SOP process, and a finishing process. The coloring process is a process for fixing the ink to the fabric 300. The SOP process is a process of washing away unfixed dyes and unnecessary auxiliaries. The finishing process is a process of performing wrinkle spreading and special processing (flameproofing, water repellency, etc.).

  In addition, the inkjet recording apparatus 100 includes, for example, a control unit that controls the apparatus itself and a connection interface used for connection to an external apparatus. The control unit includes a CPU that executes various arithmetic processes, a ROM that stores programs and other programs for executing processes that will be described later, and a RAM that serves as a work area when the CPU executes the programs stored in the ROM. Composed. For example, the CPU reads a program for a recording process executed in the inkjet recording apparatus 100 (including a program module for a peeling control process related to a peeling operation (see S104 to S110 in FIG. 3 described later)) from the ROM, Do this. At this time, the RAM stores (holds) image data input from an external device connected via the connection interface, detection signals from the first sensor 150 and the second sensor 160, and other various data. Details of the recording process (peeling control process) will be described later. Various functional means are realized by the control unit.

(Recording process)
A recording process realized by the control unit of the ink jet recording apparatus will be described with reference to FIG. This process is started when image data is input from an external apparatus to which the inkjet recording apparatus 100 is connected via the connection interface. The control unit that has started this process first starts the recording main process (S100). In S100, the control unit stores the input image data on the RAM, and performs, for example, a rendering process on the stored image data. Further, the control unit controls the supply unit 110 to start supplying the fabric 300. Specifically, the control unit controls the supply unit 110 to rotate the roll-shaped fabric 300 and feed out a predetermined amount of the fabric 300 (supply process). The fabric 300 supplied from the supply unit 110 is sent to the conveyance unit 120 side via the introduction roller 180, and is pressed and adhered to the adhesion unit 126 on the installation surface of the conveyance unit 120 by the nipple 190 (adhesion). Process). The control unit controls the conveyance unit 120, specifically, the first driving mechanism of the belt rollers 124A and 124B, and the fabric 300 side of the ink jet recording unit 130 (from the first position 120X to the second position 120Y). (Conveying process). Then, the control unit controls the inkjet recording unit 130 according to the image data on which the predetermined processing has been performed, and records an image on the conveyed fabric 300 (inkjet recording process).

  The control unit executes the recording main process started in S100 in parallel with the processes after S102. In other words, the control unit sequentially (intermittently) supplies the fabric 300 from the supply unit 110 and continuously performs image recording by the inkjet recording unit 130. As described above, the fabric 300 on which the image is recorded by the ink jet recording unit 130 is temporarily dried by the temporary drying unit 170. The temporary drying unit 170 has a configuration in which the slit 178 of the temporary drying unit 170 can be freely opened and closed, and the control unit controls the closed slit to be opened at a predetermined timing so that air injection is started. It can also be configured.

  The control unit that starts the recording main process in S100 determines whether a command indicating the end of the recording main process has been acquired. The command indicating the end is input by, for example, an operation unit (not shown in FIG. 1) provided in the inkjet recording apparatus 100. As a result of the determination, when a command indicating the end is acquired (S102: Yes), the control unit ends the recording process. On the other hand, when the command indicating the end has not been acquired (S102: No), the control unit shifts the process to S104.

  In S <b> 104, the control unit determines whether or not the fabric 300 in a state of being adhered to the adhesion unit 126 is being conveyed to the second position 120 </ b> Y based on a detection signal from the second sensor 160. As a result of the determination, when the fabric 300 is not detected by the second sensor 160 (S104: No), the control unit returns the process to S102, while when the fabric 300 is detected by the second sensor 160 (S104: Yes), the process proceeds to S106.

  In S <b> 106, the control unit drives the peeling unit 140. Specifically, the control unit controls the second drive mechanism to rotate the peeling unit 140 in the counterclockwise direction (see arrow “3” in FIG. 1). As a result, the fabric 300 conveyed to the second position 120Y in the state where the image is recorded and adhered to the adhesive portion 126 is peeled in the direction from the second position 120Y to the first position 120X (in the peeling step). One side).

  After executing S106, the control unit detects the state of the fabric 300 at the third position 120Z, which is a position between the first position 120X and the second position 120Y (S108). Specifically, the control unit determines whether the fabric 300 conveyed to the third position 120Z is in a state where it is adhered to the adhesive portion 126 or peeled off from the adhesive portion 126. Judgment is made based on the detection signal from. For example, the peeled state can be determined by detecting the fabric 300 by the first sensor 150. That is, light from the light emitting element of the first sensor 150 is blocked by the fabric 300 that is peeled off from the adhesive portion 126 and lifted from the installation surface, and light is not detected by the light receiving element. As a result of the determination, when the detection signal of the first sensor 150 indicates that the fabric 300 is adhered to the adhesive portion 126, in other words, when the first sensor 150 does not detect the separation of the fabric 300. (S108: No), a control part returns a process to S106. On the other hand, when the detection signal of the first sensor 150 indicates that the cloth 300 is peeled from the adhesive portion 126, in other words, when the first sensor 150 detects the peeling of the cloth 300. (S108: Yes), the control unit stops the driving peeling unit 140 (the peeling unit 140 performing the peeling operation) (S110 / another side surface of the peeling process). Specifically, the control unit controls the second driving mechanism and stops the rotation of the peeling unit 140.

  Note that the peeled fabric 300 is moved to the winding unit 210 side, is finally dried by the main drying unit 200, and is then wound around the winding unit 210. The control unit controls the main drying unit 200 and the winding unit 210. For example, the control unit monitors the internal state of the main drying unit 200 to be the above state, and performs control so that this state is maintained. Further, the control unit controls the winding unit 210 and controls winding of the fabric 300. Winding to the winding unit 210 is performed intermittently.

(Advantageous effects based on the configuration of the present embodiment)
According to the configuration of the present embodiment, the following advantageous effects can be obtained.

  (1) In the inkjet recording apparatus 100, when the fabric 300 is detected by the second sensor 160 (see S104 in FIG. 3: Yes), the peeling unit 140 is driven (see S106 in FIG. 3), and the first sensor 150 When the peeling of the fabric 300 is detected (see S108 in FIG. 3: Yes), the control unit stops the driving peeling unit 140 (see S110 in FIG. 3), that is, the cloth 300 is peeled off by the peeling unit 140. The peeling from the adhesive portion 126 is configured to be executed intermittently with the third position 120Z as a limit.

  According to this, the peeling of the fabric 300 in the direction from the second position 120Y to the first position 120X, which is started when the fabric 300 is transported to the second position 120Y, exceeds the third position 120Z by inkjet recording. It is not performed up to the part 130 side. Therefore, the fabric 300 in a range where an image is recorded by the ink jet recording unit 130 does not lift from the installation surface of the transport unit 120 and is appropriately adhered to the adhesive unit 126 by the ink jet recording unit 130. It is possible to record an image, and it is possible to produce a recorded matter that ensures a suitable recording quality.

  In the inkjet recording apparatus 100, the peeling unit 140 is driven and peeled at the timing when the fabric 300 on which the image is recorded is conveyed to the second position 120Y. Therefore, the fabric 300 can be prevented from being reversely conveyed in the direction of the first position 120X while being adhered to the adhesive portion 126.

  (2) The inkjet recording apparatus 100 employs a configuration in which the temporary drying unit 170 is provided between the third position 120Z and the inkjet recording unit 130 and above the installation surface of the transport unit 120 (FIG. 1, FIG. 1). 2). According to this, the ink discharged onto the fabric 300 after image recording and before peeling can be temporarily dried.

  Here, the recording quality based on the presence or absence of temporary drying by the temporary drying unit 170 will be described with reference to FIG. In the left column of FIG. 4, the state of occurrence of streaky color unevenness 320 on the surface (image recording surface) of the fabric 300 is shown separately with provisional drying (see the middle in the left column) and without (see the bottom in the left column). . In the right column of FIG. 4, the state of occurrence of a dot-like pattern (hereinafter also referred to as “Metcher”) on the back surface of the fabric 300 is shown with temporary drying (see the middle row on the right column) and without (see the lower row on the right column). Shown separately. Note that the upper part of FIG. 4 is a diagram for explaining the streaky color unevenness 320 and the mesher, and the upper left side shows an outline of the state in which the streaky color unevenness 320 has occurred, and the right side shows The outline of the state where a mesher has occurred is shown.

  Here, considering the outline of the generation mechanism of the streak-like color unevenness 320, in the fabric 300 immediately after the image is recorded, the ink discharged from the inkjet recording unit 130 is in an undried state, and the fabric 300 Ink easily moves inside. In such a state, when the fabric 300 is peeled from the adhesive portion 126, the ink is moved due to an impact at the time of peeling, and as a result, streaky color unevenness (dark line), that is, streaky color unevenness 320 is generated. Occur. The stripe-like color unevenness 320 occurs in a direction substantially perpendicular to the peeling direction (the direction from the second position 120Y to the first position 120X). In particular, it tends to occur when the amount of ink applied is large. For example, when the fabric 300 on which an image is recorded is pulled and stretched, the ink (dye) does not penetrate into the fabric 300 and the state where the color of the fabric 300 itself is visually recognized is prevented. In this case, the amount of ink applied is increased. In addition, the mesher is considered to occur when ink in an undried state moves to the back surface of the fabric 300 (through-through).

  Next, the recording quality based on the presence or absence of temporary drying will be described. When pre-drying is performed (see the middle of FIG. 4), the occurrence of streaky color unevenness 320 is not observed on the surface of the fabric 300, and the occurrence of mesh is not recognized on the back surface. This is based on the fact that the ink is temporarily fixed to the fabric 300 by the temporary drying by the temporary drying unit 170 after the image recording in the ink jet recording unit 130 is finished and before the peeling by the peeling unit 140. Considered. On the other hand, when temporary drying is not performed (see the lower part of FIG. 4), the occurrence of streaky color unevenness 320 is recognized on the surface of the fabric 300. In addition, the arrow shown in a figure shows the position where the stripe-shaped uneven color 320 has generate | occur | produced. In addition, occurrence of a mesh is recognized on the back surface of the fabric 300. From these results, it is possible to confirm the effectiveness of temporary drying performed immediately after image recording and before peeling with respect to the generation of streaky color unevenness 320 and mesh.

  Regarding the effectiveness of temporary drying by the temporary drying unit 170, if the viscosity of the water-based ink is about 1 to 10 cps, the ink easily moves in the thickness direction of the fabric 300, but the movement of the ink at the time of peeling is suppressed. Can do. In particular, the effect is increased in an ink including a reactive dye or a dye that easily reacts by heating such as a direct dye. Even ink containing a drug that is difficult to dry, such as a penetrant, can be peeled off without adversely affecting the quality by employing temporary drying by the temporary drying unit 170. Even when a plurality of different colors are overlapped to display an intermediate color, since the movement characteristics of the inks of the respective colors are different, color blur is likely to occur due to the ink that is easy to move. For example, an ink containing a quinone dye is easier to move than an ink containing an azo dye, which may cause color blurring. After recording an image, the entire surface of the fabric 300 is temporarily dried almost uniformly. By doing so, the color stability is increased, which is particularly effective.

Also relates to the material of the fabric 300, material knitting density is said to lower, specifically, the range of the knitting density, weft knitting density (course) 20-50 present / inch, Keiami density (wales) 20 to 40 present / Inch polyester knitted fabric, nylon knitted fabric, etc., in which the ink moves easily through the fiber, or a knitted fabric made of polyurethane fiber and cationic dyeable polyester fiber that requires a large amount of ink coating, polyurethane fiber and nylon Fabrics such as knitted fabric made of fibers have poor dryability (not easily dried), and in particular, the effect of temporary drying can be obtained.

(Modification)
The configuration of the present embodiment can also be as follows.

  (1) In the above description, the inkjet recording apparatus 100 includes the first sensor 150 and the second sensor 160, and controls according to the detection signals from the first sensor 150 and the second sensor 160, respectively. (See S104 to S110 in FIG. 3). However, other configurations are possible.

  For example, the second sensor 160 may be omitted. In this case, the peeling unit 140 is driven on the condition that the conveyance amount of the conveyance unit 120 after the peeling unit 140 is stopped reaches a predetermined amount. The conveyance amount of the conveyance unit 120 is acquired by, for example, the rotation amount of a motor constituting the first drive mechanism of the belt rollers 124A and 124B. Alternatively, the peeling unit 140 may be driven on condition that a predetermined time has elapsed after the peeling unit 140 is stopped.

  Further, the first sensor 150 and the second sensor 160 may be omitted. Specifically, such an ink jet recording apparatus has the following configuration. That is, an ink jet recording apparatus (corresponding to the ink jet recording apparatus 100) that discharges ink and records an image indicated by image data input from an external apparatus, and supplies a cloth (corresponding to the cloth 300). And a pressure-sensitive adhesive portion (corresponding to the pressure-sensitive adhesive portion 126) that adheres the fabric supplied from the supply portion on the installation surface on which the fabric is installed, A transport unit (corresponding to the transport unit 120) that transports from a first position (corresponding to the first position 120X) in the installation surface to a second position (corresponding to the second position 120Y) in the installation surface; Inkjet recording that records the image on the fabric that is disposed between the first position and the second position and above the installation surface and is transported in an adhesive state. Part (corresponding to the ink jet recording part 130) and a peeling part (peeling part) for peeling the fabric in a state where the image is recorded and adhered to the adhesive part from the second position to the first position 140)), and between the second position and the ink jet recording unit and at a position above the installation surface, the image is recorded, and the fabric adhered to the adhesive unit is dried. In addition, an inkjet recording apparatus including a drying unit (corresponding to the temporary drying unit 170) that performs the above-described process can be used. Also in this case, drying (temporary drying) by the drying unit is performed in a state in which the fabric is adhered to the adhesive unit, and thus the advantageous effect of the temporary drying described above can be obtained.

  (2) Unlike the above (1), the third sensor 220 (see FIG. 1) may be further provided at a predetermined position passing through the second position 120Y. That is, for example, due to the failure of the second sensor 160, the peeling unit 140 is not driven despite the fabric 300 being conveyed to the second position 120Y (see S104 in FIG. 3: Yes, S106), When the cloth 300 is detected by the three sensors 220, the control unit may be configured to stop the operation of the inkjet recording apparatus 100 itself.

DESCRIPTION OF SYMBOLS 100 Inkjet recording device 110 Supply part 120 Conveying part 122 Endless belt 124A, 124B Belt roller 126 Adhesive part 120X 1st position 120Y 2nd position 120Z 3rd position 130 Inkjet recording part 140 Peeling part 150 1st sensor 160 2nd sensor 300 Fabric

Claims (4)

An inkjet recording apparatus that ejects ink and records an image indicated by image data input from an external apparatus,
A supply unit for supplying the fabric;
An adhesive portion that adheres the fabric supplied from the supply portion is provided on an installation surface on which the fabric is installed, and the fabric in an adhesive state on the adhesive portion is disposed from the first position in the installation surface, A transport section for transporting in the direction of the second position in the installation surface;
Inkjet recording that records the image on the fabric that is disposed between the first position and the second position and above the installation surface and is conveyed while being adhered to the adhesive portion. And
A position within the installation surface downstream of the ink jet recording unit in the direction of transport of the fabric, and a position between the first position and the second position, and the ink jet recording unit. A first drying unit that is disposed at a position above the installation surface and that dries the fabric in a state where the image is recorded and adhered to the adhesive unit;
A peeling portion for peeling the fabric in a state where the image is recorded and dried and adhered to the adhesive portion from the second position toward the first position;
A first sensor for detecting the state of the fabric before Symbol third position,
An ink jet recording apparatus comprising: a peeling control unit that stops the peeling unit being driven when the first sensor detects that the fabric is peeled at the third position. A second sensor for detecting the fabric in a state of being adhered to the adhesive portion at the second position;
The said peeling control part drives the said peeling part which has stopped peeling operation | movement, when the said fabric of the state adhere | attached on the said adhesion part is detected by the said 2nd sensor. 2. An ink jet recording apparatus according to 1. The inkjet recording apparatus according to claim 1, further comprising a second drying unit that dries the fabric peeled from the adhesive unit . An ink jet recording method for ejecting ink and recording an image indicated by image data input from an external device,
A supply step of supplying the fabric;
An adhesion step of adhering the supplied fabric to an adhesion portion provided on an installation surface of a conveyance unit for conveying the fabric;
A transporting step of transporting the fabric in a state of being adhered to the adhesive part from a first position in the installation surface to a second position in the installation surface;
The image is applied to the fabric conveyed while being adhered to the adhesive portion by an ink jet recording unit disposed between the first position and the second position and above the installation surface. An ink jet recording process for recording
A position within the installation surface downstream of the ink jet recording unit in the direction of transport of the fabric, and a position between the first position and the second position, and the ink jet recording unit. A drying step of drying the fabric in a state where the image is recorded and adhered to the adhesive part by a first drying part disposed between and above the installation surface;
A peeling step of peeling the fabric in a state where the image is recorded and dried and adhered to the adhesive portion in the direction from the second position to the first position,
The stripping step is a first sensor for detecting the state of the fabric before Symbol third position, when the fabric is detected to be in a state of being peeled off, an ink jet recording method characterized in that it is stopped.