Recording device

Abstract

To provide a recording device that improves operating efficiency. [Solution] The recording device 1 is characterized by comprising: an adhesive layer to which a piece of fabric can be attached; a conveyor belt for conveying the fabric attached to the adhesive layer; a recording unit for dispensing pigment ink onto the conveyed fabric to perform recording; an application unit for applying a first cleaning liquid having the property of swelling the adhesive layer to the adhesive layer; and a cleaning mechanism positioned ahead of the application unit in the direction of travel of the conveyor belt, for cleaning the adhesive layer with a second cleaning liquid that does not have the aforementioned property.

Description

Technical Field

[0001] The present invention relates to a recording apparatus.

Background Art

[0002] Conventionally, a recording apparatus that performs printing by discharging a liquid such as ink onto a medium such as paper or cloth has been known. For example, Patent Document 1 discloses a recording apparatus including a conveyance belt that conveys a cloth as a recording medium and a cleaning unit that cleans the conveyance belt.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the apparatus described in Patent Document 1 has a problem that it is difficult to improve the operation rate. Specifically, when a pigment is used as a coloring material of ink, components containing the pigment may adhere to the surface of the conveyance belt and a pigment film may be formed. The pigment film is difficult to remove with a cleaning liquid such as water or a surfactant, and the apparatus does not disclose a means for removing the pigment film. Maintenance work is required to remove the grown pigment film, and the downtime of the apparatus may be prolonged. That is, there has been a demand for a recording apparatus that shortens the downtime due to maintenance work or the like and improves the operation rate.

Means for Solving the Problems

[0005] The recording device is characterized by comprising: an adhesive layer to which a fabric can be attached; a conveyor belt for conveying the fabric attached to the adhesive layer; a recording unit for dispensing pigment ink onto the conveyed fabric to perform recording; an application unit for applying a first cleaning solution having the property of swelling the adhesive layer to the adhesive layer; and a cleaning mechanism positioned downstream of the application unit in the fabric conveying direction for cleaning the adhesive layer with a second cleaning solution not having the aforementioned property. [Brief explanation of the drawing]

[0006] [Figure 1] A schematic diagram showing the configuration of a recording device according to this embodiment. [Figure 2] A schematic diagram showing the configuration of the coating section and the cleaning mechanism. [Modes for carrying out the invention]

[0007] In the embodiments described below, a recording device 1 used for digital printing of woven fabrics will be illustrated and explained with reference to the drawings. Note that the use of the recording device of the present invention is not limited to printing.

[0008] In the following diagrams, mutually orthogonal coordinate axes, the X, Y, and Z axes, are shown, with the direction indicated by each arrow being the + direction and the opposite direction being the - direction. When the recording device 1 is installed on a horizontal surface such as the floor, the -Z direction is the vertical direction. The +Z direction may also be referred to as upward, and the -Z direction as downward. For illustrative purposes, the sizes of each component are different from those in reality.

[0009] In the transport path of a fabric recording medium, where the fabric is unrolled from the original roll, printed, and then wound into a roll, the side where the original roll is unrolled may be called the upstream, and the side where the fabric is wound may be called the downstream. Furthermore, the direction in which the fabric is transported from upstream to downstream is called the transport direction.

[0010] As shown in Figure 1, the recording device 1 according to this embodiment comprises a control unit 5, a media transport unit 2, a recording unit 60, a drying unit 70, a winding unit 40, an operation panel 80, a coating unit 110, a cleaning mechanism 120, and a detection unit 130. The recording device 1 also includes a housing (not shown). Each component of the recording device 1 is supported by a frame F.

[0011] The recording device 1 applies pigment ink or the like to a piece of fabric P to form an image such as a picture, photograph, text, or pattern on the fabric P, thereby producing a printed object. In the explanation of Figure 1, unless otherwise specified, the view from the -X direction will be described.

[0012] The control unit 5 is electrically connected to each component of the recording device 1 and comprehensively controls the operation of each component. As will be described in detail later, the control unit 5 is particularly responsible for the control of the coating unit 110 and the cleaning mechanism 120.

[0013] The control unit 5 includes hardware such as a CPU (Central Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory). The control unit 5 executes a predetermined control program using the CPU. The ROM is a non-volatile storage device that stores the control program executed by the CPU and the data processed by the control program. The RAM constitutes the CPU's work area. The CPU loads the control program read from the ROM or other memory into the RAM and executes the loaded control program.

[0014] The control panel 80 is also electrically connected to the control unit 5. The control panel 80 provides various information to the user of the recording device 1 and accepts input of various operations and settings from the user. The control unit 5 also controls the recording device 1 based on the information input to the control panel 80. In the following description, the user of the recording device 1 will also be simply referred to as the user.

[0015] The operation panel 80 is supported by the frame F via a component (not shown) and is positioned at the upper and +Y end of the recording device 1. The user stands in the +Y direction of the recording device 1 and makes various inputs while visually viewing the operation panel 80. The operation panel 80 is, for example, a touch panel type liquid crystal display. In addition to a display device such as a liquid crystal display, the operation panel 80 may also have a sound-generating device and physical buttons. The operation panel 80 is an example of the notification unit of the present invention.

[0016] The media transport unit 2 includes a media supply unit 10, transport rollers 21, 22, 23, 24, a transport mechanism 30, and a winding unit 40. The media transport unit 2 transports the fabric P along a transport path from upstream to downstream.

[0017] The media supply unit 10 includes a supply shaft 11, a bearing unit 12, and a rotary drive unit (not shown). The supply shaft 11 is substantially cylindrical and holds the core of the raw fabric roll P. The bearing unit 12 detachably and rotatably supports both ends of the supply shaft 11 in the direction along the X axis.

[0018] The rotational drive unit is, for example, an electric motor that rotates the supply shaft 11. The rotation of the supply shaft 11 and the belt rotating roller 32 of the conveying mechanism 30, which will be described later, causes the fabric P to be separated from the raw material and sent downstream.

[0019] The fabric P is transported from the media supply unit 10, passes through the transport roller 21, and then its transport direction is changed to approximately the +Y direction by the transport roller 22. The fabric P is then transferred to the transport mechanism 30 from approximately the -Y direction.

[0020] Examples of fibers used as the material for the fabric P include natural fibers such as cotton, silk, linen, mohair, wool, and cashmere, regenerated fibers such as rayon and cupro, and synthetic fibers such as nylon, polyester, and polyurethane, which can be used as single yarns, double yarns, or blends. The fabric P is made by processing the above fibers into a woven or nonwoven fabric. In order to improve the properties of the fabric products manufactured from the printed fabric P, the fabric P may be pre-processed.

[0021] The conveying mechanism 30 includes belt rotating rollers 31 and 32, a conveying belt 33, and a crimping part 50.

[0022] The conveying belt 33 is located between the transport roller 22 and the transport roller 23 and conveys the fabric P. The conveying belt 33 is an endless belt and is stretched over an area including positions that oppose the recording unit 60 in the vertical direction by the belt rotating rollers 31 and 32. The conveying belt 33 has an outer peripheral surface 33a and an inner peripheral surface 33b. The outer peripheral surface 33a and the inner peripheral surface 33b are in a front - back relationship. The fabric P can be placed on the outer peripheral surface 33a.

[0023] The conveying belt 33 has an adhesive layer (not shown) on the outer peripheral surface 33a. The adhesive layer has an adhesive force to the fabric P, and the fabric P can be attached. The adhesive layer is provided over the entire circumference of the outer peripheral surface 33a. The conveying belt 33 is rotationally driven counterclockwise by the belt rotating rollers 31 and 32 with the fabric P attached to the adhesive layer. Thereby, the fabric P is conveyed in the conveying direction. The conveying direction of the fabric P on the conveying belt 33 is the +Y direction.

[0024] In the direction along the X - axis, the width of the conveying belt 33 is wider than the width of the fabric P. The direction intersecting the conveying direction is defined as the width direction of the conveying belt 33. In the present embodiment, the width direction of the conveying belt 33 is the direction along the X - axis. Hereinafter, the width direction of the conveying belt 33 may also be simply referred to as the width direction.

[0025] The belt rotating rollers 31 and 32 are substantially cylindrical rotating members and form a pair. Each of the belt rotating rollers 31 and 32 is rotatable on an axis of rotation along the X-axis. The belt rotating rollers 31 and 32 are arranged opposite each other in the direction along the Y-axis. The belt rotating roller 31 is located upstream of the conveying mechanism 30 and is positioned near the transport roller 22 in the +Y direction. The belt rotating roller 32 is located downstream of the conveying mechanism 30 and is positioned near the transport roller 23 in the -Y direction. A support member for supporting the conveying belt 33 may be positioned between the belt rotating rollers 31 and 32.

[0026] The belt rotating roller 31 is a driven roller that rotates counterclockwise when the rotation of the belt rotating roller 32 is transmitted to it via the conveyor belt 33. The belt rotating roller 31 is rotatably supported by a roller support member (not shown).

[0027] The belt rotating roller 32 is driven to rotate counterclockwise by a transport drive motor (not shown). The transport drive motor is controlled by a control unit 5. The belt rotating roller 32 is rotatably supported by a roller support unit 39.

[0028] The fabric P is transferred from the transport roller 22 to the conveying mechanism 30 and placed on the outer surface 33a of the conveying belt 33 above the belt rotating roller 31. At this time, the fabric P does not need to be in close contact with the outer surface 33a.

[0029] The outer circumferential surface 33a supports the fabric P from below. The inner circumferential surface 33b is in contact with the belt rotating roller 31 and the belt rotating roller 32. The frictional force between the inner circumferential surface 33b and the belt rotating roller 32 drives the conveyor belt 33 to rotate. The frictional force between the inner circumferential surface 33b and the belt rotating roller 31 causes the belt rotating roller 31 to move.

[0030] In the direction along the X-axis, which is the width direction, the width of the adhesive layer on the outer surface 33a is approximately equal to the width of the conveyor belt 33. The path of the conveyor belt 33 from the belt rotating roller 31 to the belt rotating roller 32 is the conveyor path for the fabric P. The path of the conveyor belt 33 that returns to the belt rotating roller 31 after being folded back at the belt rotating roller 32 is the non-conveyor path. The outer surface 33a faces upward in the conveyor path and downward in the non-conveyor path.

[0031] The adhesive layer on the outer surface 33a adheres to the fabric P by adhesive force. The adhesive layer includes an adhesive material having adhesive properties, such as silicone resin, acrylic resin, or urethane resin. In the recording device 1, acrylic resin is used as the base material for the adhesive layer. Examples of known acrylic resins include polybutyl acrylate.

[0032] The crimping section 50 is positioned near the belt rotating roller 31 in the +Y direction. The crimping section 50 comprises a pressing roller 51, a pair of support sections 53, a heating section 54, and a pair of drive sections (not shown). The crimping section 50 presses the fabric P against the adhesive layer of the conveyor belt 33, thereby attaching the fabric P to the adhesive layer.

[0033] The press roller 51 is a roughly cylindrical rotating member. The press roller 51 has its axis of rotation along the X-axis and is positioned above the conveyor belt 33. The support parts 53 are positioned at both ends of the press roller 51 in the direction along the X-axis. The press roller 51 is rotatably supported by the pair of support parts 53. Each of the pair of support parts 53 is supported by the drive unit. In the direction along the X-axis, the length of the press roller 51 is approximately equal to the width of the conveyor belt 33.

[0034] One of the drive units is positioned further in the -X direction relative to the support unit 53 that supports the -X end of the press roller 51. The other of the drive unit is positioned further in the +X direction relative to the support unit 53 that supports the +X end of the press roller 51.

[0035] The pair of drive units move vertically while supporting the pair of support units 53 by a lifting drive motor (not shown). As a result, the pressing roller 51 can be displaced vertically while being supported by the support units 53. This allows for adjustment of the strength of the pressing force applied by the pressing roller 51 when it presses the fabric P against the adhesive layer on the outer surface 33a.

[0036] Although not shown in the diagram, the pair of drive units, driven by the guide member and motor, reciprocate along the Y-axis while supporting the pair of support units 53. Therefore, the pressing roller 51 is supported by the support units 53 and can reciprocate along the Y-axis.

[0037] The heating unit 54 heats the conveyor belt 33. The heating unit 54 is positioned below the press roller 51 via the conveyor belt 33. The upper surface of the heating unit 54 is formed to be substantially flat and contacts the lower inner circumferential surface 33b of the conveyor belt 33 in the conveying path. The distance of the heating unit 54 along the Y-axis is approximately equal to the distance the press roller 51 reciprocates in the conveying direction and the reverse conveying direction. The distance of the heating unit 54 along the X-axis is approximately equal to the length of the conveyor belt 33 in the width direction.

[0038] The heating unit 54 is, for example, an electric heater. Heating by the heating unit 54 heats the adhesive layer on the outer surface 33a of the conveyor belt 33. The adhesive layer becomes more flexible when heated, and its adhesive force to the fabric P increases. The heating temperature by the heating unit 54 is, for example, 35°C to 60°C on the upper surface of the heating unit 54.

[0039] In the crimping section 50, the fabric P is placed on the upper surface of the heating section 54 via the conveyor belt 33. The heating section 54 heats the conveyor belt 33, and the pressing roller 51 presses the fabric P against the adhesive layer from above. In parallel with this, the pressing roller 51 rotates and reciprocates in the +Y direction and the -Y direction. The fabric P and the conveyor belt 33 are sandwiched and pressed between the upper surface of the heating section 54 and the pressing roller 51, causing the fabric P and its outer surface 33a to adhere closely together. The fabric P is conveyed in the +Y direction through the crimping section 50 while adhering closely to the conveyor belt 33. Alternatively, the pressing roller 51 may be equipped with a function to heat the conveyor belt 33 instead of the heating section 54. Furthermore, depending on the type of fabric P and the characteristics of the adhesive layer, the heating section 54 may be omitted.

[0040] The following heat roller system is an example of a configuration in which the pressing roller 51 has the function of heating the conveyor belt 33. The heat roller system comprises a support plate having substantially the same shape as the heating unit 54, a heat roller having the same shape as the pressing roller 51, a pair of support units 53, and a pair of drive units. In other words, the heat roller system operates similarly to the pressing unit 50, except that the heat roller takes over the heating function of the heating unit 54.

[0041] The recording unit 60 is positioned in the middle of the Y-axis direction of the conveyor belt 33, facing the outer surface 33a and the fabric P in the vertical direction. The recording unit 60 discharges pigment ink or the like onto the fabric P being conveyed on the conveyor belt 33, thereby recording the image. This prints the image onto the fabric P. The recording unit 60 includes an inkjet head, an ejection unit 61, a carriage 62, and a guide rail 63.

[0042] The guide rail 63 is a structural member that extends along the X-axis and is positioned above the conveying mechanism 30. The guide rail 63 supports the carriage 62 so that it can move in the direction along the X-axis. Supported by the guide rail 63, the carriage 62 reciprocates in the direction along the X-axis by the drive of a carriage drive motor (not shown). The discharge unit 61 is mounted below the carriage 62 and reciprocates together with the carriage 62 in the direction along the X-axis relative to the conveying belt 33.

[0043] The discharge unit 61 discharges pigment ink and functional liquids onto the fabric P, which is placed on the outer peripheral surface 33a and transported. The discharge unit 61 has a nozzle surface (not shown) facing downwards. The nozzle surface faces the transport belt 33 and the fabric P in the vertical direction. Multiple nozzle rows are arranged on the nozzle surface. Each of the multiple nozzle rows consists of multiple nozzles. Each of the multiple nozzle rows individually discharges multiple types of pigment inks exhibiting various colors, such as cyan, magenta, yellow, and black, and functional liquids onto the fabric P. Examples of pigment inks include water-based inks and non-water-based inks. In this embodiment, water-based pigment inks are used.

[0044] In the discharge section 61, a piezoelectric element is used as the actuator, which is the driving means. The driving means is not limited to this. For example, an electromechanical conversion element that displaces a diaphragm acting as an actuator by electrostatic attraction, or an electrothermal conversion element that discharges ink as droplets by generating bubbles through heating may be used as the driving means.

[0045] Although not shown in the diagram, the pigment ink and functional liquid are supplied from the ink tanks to the discharge unit 61 via ink piping. The pigment ink and functional liquid discharged from the discharge unit 61 adhere to the upward-facing surface of the fabric P.

[0046] The discharge unit 61 is moved back and forth along the X-axis while the fabric P is conveyed in the +Y direction by the conveyor belt 33. At this time, pigment ink or the like is attached to the fabric P from the discharge unit 61 at a predetermined timing. This forms a desired image on the fabric P.

[0047] The functional liquid is specifically a softener or pretreatment liquid. The dispensing of the functional liquid onto the fabric P is simultaneous with or preceding / contemporaneous with the dispensing of the pigment ink.

[0048] A softener has the function of improving the texture of fabric products such as clothing when a printed fabric P is processed into a fabric product. The softener is not particularly limited, and known softeners can be used. If the softener contains cationic components, it may react with the components of the pigment ink and form aggregates. Therefore, it is preferable to avoid contact or mixing of the softener and the pigment ink.

[0049] The pretreatment solution has the function of agglomerating pigments and resins in the pigment ink on the surface of the fabric P, thereby improving the color development of the printed material. Such a pretreatment solution is not particularly limited, and known treatment agents can be applied. Since the pretreatment solution agglomerates the pigments, it is preferable to avoid contact or mixing of the pretreatment solution with the pigment ink for purposes other than its intended use.

[0050] Other functional liquids besides softeners and pretreatment solutions may be used as functional liquids. Examples of other functional liquids include coating solutions that improve the abrasion resistance and wash fastness of printed fabric P, and penetrating solutions that assist in the penetration of pigment ink into fabric P.

[0051] In the dispensing unit 61, pre-dispensing is performed before dispensing pigment ink and functional liquid onto the fabric P, and in between dispensing operations. Pre-dispensing is performed to suppress drying and solidification of pigment ink and functional liquid at the gas-liquid interface within each nozzle of the dispensing unit 61, and to prevent color mixing after cleaning each nozzle. The execution of pre-dispensing is controlled by the control unit 5. The timing of pre-dispensing, the time interval, and the amount of pigment ink and functional liquid to be pre-dispensed are set appropriately according to the type and characteristics of the pigment ink and functional liquid.

[0052] The printed fabric P is then transported further in the +Y direction from a position opposite the recording unit 60. The fabric P is then detached from the transport belt 33 approximately above the belt rotating roller 32 and transferred to the transport roller 23 downstream of the belt rotating roller 32.

[0053] The conveyor belt 33 is turned back from the conveying path to the non-conveying path by the belt rotating roller 32, and moves in the -Y direction with its outer surface 33a facing downwards. In other words, in the non-conveying path, the direction of travel of the conveyor belt 33 is the -Y direction.

[0054] Because an adhesive layer is placed on the outer surface 33a of the conveyor belt 33, and the fabric P is conveyed in close contact with the adhesive layer, the adhesive layer is prone to contamination from pigment ink, lint and other foreign matter from the fabric P. If the adhesive layer is significantly soiled, the fabric P may become soiled again when the conveyor belt 33 makes a rotation and comes into contact with the fabric P before printing. In addition, the adhesive strength of the adhesive layer may decrease due to the contamination.

[0055] In particular, some pigment inks and functional liquids may pass through the fabric P and reach the adhesive layer, forming a pigment film on the surface of the adhesive layer. Furthermore, pigment inks often contain fixing resins to improve their adhesion to the fabric P. These factors can facilitate the formation of a pigment film in the adhesive layer. Additionally, using a pretreatment liquid as a functional liquid can promote the aggregation of pigments, leading to the formation of a pigment film.

[0056] When pigment film formation or dirt accumulation becomes significant, the adhesive strength of the adhesive layer decreases, which may hinder the transport of the fabric P. In such cases, maintenance work such as reapplying the adhesive layer or replacing the transport belt 33 is performed. Since maintenance work such as reapplying the adhesive layer is performed by stopping the operation of the recording device 1, it was a factor that reduced the operating rate of the recording device 1. In contrast, the recording device 1 removes dirt from the adhesive layer using the coating section 110 and the cleaning mechanism 120, thereby reducing the frequency of maintenance work.

[0057] The coating unit 110 and the cleaning mechanism 120 are positioned below the conveyor belt 33 in the non-conveyor path. In the direction of travel of the conveyor belt 33, the cleaning mechanism 120 is positioned ahead of the coating unit 110. Details of the configuration and function of the coating unit 110 and the cleaning mechanism 120 will be described later.

[0058] The detection unit 130 is positioned between the cleaning mechanism 120 and the belt rotating roller 31 in the non-conveying path of the conveyor belt 33. The detection unit 130 detects the adhesive strength of the adhesive layer of the conveyor belt 33. The detection unit 130 is electrically connected to the control unit 5. The information on the adhesive strength of the adhesive layer detected by the detection unit 130 is transmitted to the control unit 5. The detection unit 130 makes it possible to monitor the adhesive strength of the adhesive layer, or in other words, the degree of contamination of the adhesive layer.

[0059] A known adhesion strength meter can be used as the detection unit 130. The placement of the detection unit 130 is not limited to being between the washing mechanism 120 and the belt rotating roller 31. Furthermore, the detection unit of the present invention is not limited to an adhesion strength meter. The detection unit of the present invention may be, for example, a mechanism that calculates the adhesion strength from the peeling angle of the fabric P peeled off by the belt rotating roller 32. Alternatively, the detection unit of the present invention may be a mechanism that calculates the adhesion strength from the rotational resistance of the conveying drive motor that rotates the belt rotating roller 32.

[0060] The conveyor belt 33 is folded back from the non-conveyor path to the conveyor path by the belt rotation roller 31, and moves in the +Y direction with its outer surface 33a facing upward. In this way, the conveyor belt 33 rotates counterclockwise.

[0061] The transport roller 23 separates the printed fabric P from the conveyor belt 33. The fabric P separated from the conveyor belt 33 is transported in approximately the +Y direction, and the transport roller 23 changes the transport direction to approximately downward. The transport rollers 23 and 24 relay the fabric P to the winding section 40.

[0062] A drying section 70 is positioned between the transport rollers 23 and 24. The drying section 70 dries the pigment ink and functional liquid adhering to the fabric P. The drying section 70 includes, for example, an infrared heater. The infrared rays emitted by the infrared heater cause volatile components contained in the pigment ink and functional liquid adhering to the fabric P to evaporate. As a result, the droplets of pigment ink and functional liquid dry, making it possible to wind the fabric P in the winding section 40. The fabric P proceeds to the winding section 40 via the transport rollers 24.

[0063] The winding unit 40 is positioned downstream and below the transport roller 24. The winding unit 40 collects the printed material, which is the printed fabric P. The winding unit 40 has a winding shaft 41, a bearing 42, and a rotary drive unit (not shown). The winding shaft 41 is substantially cylindrical and winds the printed material into a roll. The bearing 42 rotatably supports both ends of the winding shaft 41 in the direction along the X axis. The winding shaft 41 is also detachable from the bearing 42. The rotary drive unit rotates the winding shaft 41 counterclockwise. The winding shaft 41 rotates due to the rotary drive unit, and the printed material is wound up. As a result, the printed material is produced in the recording device 1.

[0064] As shown in Figure 2, the coating unit 110 and the cleaning mechanism 120 are positioned below the conveyor belt 33 in the non-return path and face the adhesive layer Ad on the outer surface 33a in the vertical direction. In Figure 2, the conveyor belt 33 in the non-conveyor path is shown by a dashed line. In the non-conveyor path, the direction of travel of the conveyor belt 33 is the -Y direction.

[0065] The coating unit 110 and the cleaning mechanism 120 are arranged side by side along the Y-axis. The coating unit 110 is positioned in the +Y direction relative to the cleaning mechanism 120. As a result, the conveyor belt 33 passes through the non-conveyor path first at the position corresponding to the coating unit 110, and then at the position corresponding to the cleaning mechanism 120. The coating unit 110 applies the first cleaning solution to the adhesive layer Ad. The cleaning mechanism 120 cleans the adhesive layer Ad with the second cleaning solution.

[0066] The coating section 110 includes a coating member 111, a first cleaning liquid tank 113, and a standard section 117. The first cleaning liquid tank 113 is equipped with a storage tank 112, a liquid level sensor 114, a first supply section 115, a first displacement section 116, and a circulation mechanism 118. The first supply section 115 is an example of a supply section of the present invention.

[0067] The first cleaning fluid tank 113 is bathtub-shaped with an open top and stores the first cleaning fluid, as well as applying the first cleaning fluid to the coating member 111. The first cleaning fluid tank 113 is positioned below the coating member 111. The first cleaning fluid is accumulated at the bottom of the first cleaning fluid tank 113. A portion of the lower part of the coating member 111 is immersed in the first cleaning fluid stored in the first cleaning fluid tank 113. In the direction along the X axis, the width of the first cleaning fluid tank 113 is greater than the width of the coating member 111.

[0068] The first cleaning solution has the property of swelling the adhesive layer Ad. The first cleaning solution is, for example, an organic solvent, and is selected according to the material of the adhesive layer Ad and the type of pigment ink applied to the recording device 1. Because the first cleaning solution swells the adhesive layer Ad, it lifts off pigment films and dirt adhering to the surface of the adhesive layer Ad, making them easier to remove.

[0069] It is preferable that the first cleaning solution does not dissolve the adhesive layer Ad. In other words, it is desirable that the first cleaning solution has relatively low dissolving power with respect to the resin that is the base material of the adhesive layer Ad. The low dissolving power of the first cleaning solution suppresses the deterioration of the adhesive layer Ad.

[0070] The first cleaning solution is not particularly limited, but examples include alcohol-based or glycol ether-based organic solvents such as (2-methoxyethoxy)propanol (also known as dipropylene glycol monomethyl ether), 2-butoxyethanol, ethoxylated propoxylated alcohol (C=16-18), 3-methoxy-3-methylbutanol, and (R)-4-isopropenyl-1-methylcyclohexa-1-ene. In addition to the above organic solvents, the first cleaning solution may also contain additives such as water and defoamers.

[0071] The first cleaning solution preferably does not contain surfactants. This suppresses foaming caused by the first cleaning solution.

[0072] The storage tank 112 is a source of the first cleaning fluid and is a liquid storage container that holds the first cleaning fluid. The storage tank 112 is, for example, a resin tank. The storage tank 112 has a lid (not shown), and by opening the lid, the first cleaning fluid can be supplied to the storage tank 112. By closing the lid, the storage tank 112 is sealed.

[0073] Since the user only needs to replenish the first cleaning solution in the storage tank 112, user convenience is improved. Furthermore, because the storage tank 112 functions as a buffer tank, it is possible to replenish the first cleaning solution in the storage tank 112 while consuming it in the application unit 110.

[0074] The first supply unit 115 supplies the first cleaning fluid from the storage tank 112 to the first cleaning fluid tank 113. The first supply unit 115 includes a liquid transfer pump 115a, an on / off unit 115b, and a supply pipe 115c. The inside of the storage tank 112 and the inside of the first cleaning fluid tank 113 are connected by the supply pipe 115c. The liquid transfer pump 115a is located in the middle of the supply pipe 115c, closer to the storage tank 112, and the on / off unit 115b is located closer to the first cleaning fluid tank 113. The first cleaning fluid flows through the supply pipe 115c in the order of storage tank 112, liquid transfer pump 115a, and on / off unit 115b.

[0075] The liquid transfer pump 115a sends the first cleaning liquid contained in the storage tank 112 to the opening / closing section 115b. A known liquid pump can be used for the liquid transfer pump 115a.

[0076] The opening / closing unit 115b changes the supply amount of the first cleaning liquid supplied to the first cleaning liquid tank 113. The opening / closing unit 115b sends the first cleaning liquid, whose supply amount has been adjusted, to the first cleaning liquid tank 113 via the supply pipe 115c.

[0077] A valve (not shown) within the opening / closing section 115b can be arbitrarily adjusted in opening degree between fully open and fully closed. The opening degree of the valve in the opening / closing section 115b is controlled by the control unit 5. That is, the control unit 5 controls the opening / closing section 115b to adjust the amount of first cleaning fluid supplied to the first cleaning fluid tank 113. This improves user convenience compared to when the user manually adjusts the supply amount. A known valve mechanism, such as an electromagnetic valve, is applied to the valve in the opening / closing section 115b.

[0078] The supply pipe 115c is connected to the side wall of the first cleaning fluid tank 113 in the +Y direction. The first cleaning fluid flows along the side wall of the first cleaning fluid tank 113 in the +Y direction and accumulates at the bottom of the first cleaning fluid tank 113. Note that the arrangement of the components of the first supply unit 115 described above is just an example and is not limited to that described above.

[0079] The defining portion 117 defines the volume of the first cleaning fluid to be stored in the first cleaning fluid tank 113. The defining portion 117 is positioned at the bottom of the first cleaning fluid tank 113, closer to the -Y direction. The defining portion 117 is a plate-shaped partition member. The defining portion 117 is aligned with the XZ plane and protrudes upward from the bottom of the first cleaning fluid tank 113. The first cleaning fluid is stored in the region partitioned by the side walls and bottom of the first cleaning fluid tank 113 and the defining portion 117.

[0080] In Figure 2, the above region is shown as hatched with diagonal lines. Figure 2 shows the state where the first cleaning liquid is at liquid level Lv, which is the liquid level when the first cleaning liquid is fully stored in the first cleaning liquid tank 113 under the condition that the coating member 111 is immersed in the tank. If more first cleaning liquid is supplied from the state where the first cleaning liquid is at liquid level Lv, the first cleaning liquid will overflow the specified section 117 and spill out in the -Y direction. The spilled cleaning liquid is discharged outside the coating section 110 from a discharge mechanism (not shown). The first cleaning liquid discharged from the discharge mechanism may be collected in a drain tank or the like, or it may be recycled and reused.

[0081] The liquid level sensor 114 detects the height of the liquid level of the first cleaning fluid stored in the first cleaning fluid tank 113, i.e., the amount stored. The liquid level sensor 114 is a known contact-type or non-contact-type liquid level sensor. The liquid level sensor 114 detects the vertical position of the liquid level, including the liquid level Lv, i.e., the amount of the first cleaning fluid stored in the first cleaning fluid tank 113. The liquid level sensor 114 is electrically connected to the control unit 5. Hereinafter, in the following description, the amount of the first cleaning fluid stored in the first cleaning fluid tank 113 will also be simply referred to as the amount stored in the first cleaning fluid tank 113.

[0082] The liquid level sensor 114 detects the amount of liquid stored in the first cleaning liquid tank 113, and this information is transmitted to the control unit 5. The control unit 5 can adjust the amount of liquid stored in the first cleaning liquid tank 113 by controlling the first supply unit 115 and the circulation mechanism 118, which will be described later.

[0083] When operating the coating unit 110 to apply the first cleaning solution to the adhesive layer Ad, it is preferable that the amount of the first cleaning solution stored in the first cleaning solution tank 113 be such that the first cleaning solution does not overflow, and more preferably at the liquid level Lv. By operating the coating unit 110 without overflowing the first cleaning solution, the consumption of the first cleaning solution can be suppressed. However, if the pigment film or dirt adhering to the adhesive layer Ad is significant, the coating unit 110 may be operated while supplying the first cleaning solution from the first supply unit 115, allowing it to overflow.

[0084] The composition of the first cleaning solution stored in the first cleaning solution tank 113, that is, the concentration of the first cleaning solution, is adjusted in the storage tank 112 by adding water or other substances to the first cleaning solution. Alternatively, the first cleaning solution may be used undiluted with water or other substances.

[0085] The coating member 111 applies the first cleaning solution from the first cleaning solution tank 113 to the adhesive layer Ad. The coating member 111 is a substantially cylindrical sponge member with its central axis aligned with the X-axis. In the direction aligned with the X-axis, the width of the coating member 111 is equal to or greater than the width of the adhesive layer Ad. Although not shown in the illustration, the coating member 111 is equipped with a support member and a drive motor. The coating member 111 is supported by the support member, and a portion of its lower part is immersed in the first cleaning solution from the first cleaning solution tank 113. As a result, the coating member 111 absorbs and contains the first cleaning solution, and is rotationally driven by the drive motor to rotate counterclockwise around its central axis.

[0086] The coating member 111 rotates while containing the first cleaning solution and comes into contact with the adhesive layer Ad, thereby applying the first cleaning solution to the adhesive layer Ad. As described above, in the direction along the X axis, the length of the coating member 111 is greater than or equal to the length of the adhesive layer Ad, so the first cleaning solution is applied to the entire area of ​​the adhesive layer Ad in the width direction by contact with the coating member 111. When the first cleaning solution is applied, the adhesive layer Ad swells, and the pigment film and dirt adhering to the adhesive layer Ad lift off and become easier to remove.

[0087] In this embodiment, a contact-type sponge member is exemplified as the coating member 111, but it is not limited to this. The coating section 110 can apply the first cleaning solution to the entire area of ​​the adhesive layer Ad in the width direction by a contact method or a non-contact method. Specifically, as other contact methods, a substantially cylindrical brush having a shape similar to that of the coating member 111 may be applied. Examples of non-contact methods include spraying devices and dripping devices.

[0088] Furthermore, in this embodiment, the coating member 111 was immersed in the first cleaning solution in the first cleaning solution tank 113 to apply the first cleaning solution, but this is not the only way. The first cleaning solution may be applied to the coating member 111 by dropping, spraying, or other means.

[0089] The circulation mechanism 118 circulates the first cleaning fluid stored in the first cleaning fluid tank 113 for reuse. The circulation mechanism 118 is connected to the area where the first cleaning fluid is stored at the bottom of the first cleaning fluid tank 113. The circulation mechanism 118 includes a filter section 118a and a circulation section 118b. In the circulation mechanism 118, the filter section 118a is arranged first, followed by the circulation section 118b, in order of proximity to the first cleaning fluid tank 113. The first cleaning fluid tank 113 and the filter section 118a and circulation sections 118b and b are connected by piping (not shown).

[0090] In the piping described above, a valve mechanism (not shown) is attached near the first cleaning fluid tank 113. This valve mechanism switches between allowing and stopping the outflow of the first cleaning fluid from the first cleaning fluid tank 113 to the circulation mechanism 118.

[0091] The filter section 118a filters the first cleaning liquid that flows in from the first cleaning liquid tank 113. Due to the sliding between the coated member 111 and the adhesive layer Ad, foreign matter such as pigment film and dust that was attached to the adhesive layer Ad may be mixed into the first cleaning liquid stored in the first cleaning liquid tank 113. The filter section 118a recovers and removes the above foreign matter by filtration. Known filters such as mesh or nonwoven fabric can be applied as the filter section 118a.

[0092] The circulation unit 118b circulates the first cleaning liquid stored in the first cleaning liquid tank 113. Specifically, the circulation unit 118b is, for example, a known liquid transfer pump that recirculates the first cleaning liquid through piping to the storage tank 112 or the first cleaning liquid tank 113. Because the first cleaning liquid is reused by the circulation mechanism 118, the consumption of the first cleaning liquid can be reduced. The circulation mechanism 118 also has a function to discharge the first cleaning liquid outside the coating unit 110 without circulating it.

[0093] The first displacement unit 116 changes the contact and separation of the coating member 111 of the coating unit 110 with respect to the adhesive layer Ad of the conveyor belt 33. When the coating member 111 is in contact with the adhesive layer Ad, the first cleaning liquid is applied to the adhesive layer Ad, and when the coating member 111 is separated, the first cleaning liquid is not applied to the adhesive layer Ad.

[0094] The first displacement unit 116 is positioned below the first cleaning fluid tank 113. The first displacement unit 116 is electrically connected to the control unit 5. Although not shown in the figures, the first displacement unit 116 includes known actuators and electric motors. The first displacement unit 116 is controlled by the control unit 5 to displace the first cleaning fluid tank 113 and the coating member 111, etc., in the vertical direction.

[0095] Figure 2 shows the state in which the coating member 111 is in contact with the adhesive layer Ad. The first displacement unit 116 can move the coating member 111 downward from the above state, thereby separating the coating member 111 from the adhesive layer Ad. When there is only a small amount of pigment film or dirt attached to the adhesive layer Ad, the coating member 111 can be separated from the adhesive layer Ad, thereby reducing the consumption of the first cleaning solution and the wear of the coating member 111.

[0096] As the conveyor belt 33 rotates, the area to which the first cleaning solution has been applied by the coating unit 110 moves toward the cleaning mechanism 120. In the adhesive layer Ad, swelling progresses between the time the first cleaning solution is applied and when it reaches the cleaning mechanism 120.

[0097] The cleaning mechanism 120 includes a cleaning member 121, a second cleaning liquid tank 123, a standardizing section 127, a wiping section 131, and a wiping section 133. The second cleaning liquid tank 123 is also equipped with a second supply section 125, a second displacement section 126, and a discharge section 129.

[0098] In the direction along the Y-axis, it is preferable that the distance between the coating section 110 and the cleaning mechanism 120 be as far apart as possible. When the above distance is relatively far apart, sufficient time is ensured for the adhesive layer Ad to swell due to the first cleaning liquid applied by the coating section 110.

[0099] The cleaning member 121, the wiping section 131, and the wiping section 133 are positioned in contact with the adhesive layer Ad of the conveyor belt 33 and are arranged in the above order in the -Y direction. The adhesive layer Ad slides against these components in the order of cleaning member 121, wiping section 131, and wiping section 133.

[0100] The second cleaning fluid tank 123 is bathtub-shaped with an open top and stores a second cleaning fluid for cleaning the adhesive layer Ad. The second cleaning fluid may contain foreign matter such as fragments of the pigment film and dirt that have migrated from the adhesive layer Ad during cleaning.

[0101] The second cleaning fluid tank 123 is positioned below the cleaning member 121. The second cleaning fluid is stored at the bottom of the second cleaning fluid tank 123. A portion of the lower part of the cleaning member 121 is immersed in the second cleaning fluid stored in the second cleaning fluid tank 123. In the direction along the X axis, the width of the second cleaning fluid tank 123 is greater than the width of the cleaning member 121.

[0102] The second cleaning solution does not have the property of swelling the adhesive layer Ad. The second cleaning solution is, for example, water. Examples of water include pure water such as ion-exchanged water, ultrafiltered water, reverse osmosis water, and distilled water, as well as tap water. In this embodiment, tap water is used as the second cleaning solution. The second cleaning solution may contain additives such as disinfectants. From the same viewpoint as the first cleaning solution, it is preferable that the second cleaning solution does not contain surfactants.

[0103] The second supply unit 125 supplies the second cleaning fluid to the second cleaning fluid tank 123 of the cleaning mechanism 120. The second supply unit 125 has a pipe 125a, an opening / closing unit 125b, and a supply pipe 125c. The pipe 125a, the opening / closing unit 125b, and the supply pipe 125c are arranged in the order described above toward the second cleaning fluid tank 123. The second cleaning fluid flows in the second supply unit 125 in the order described above.

[0104] The pipe 125a connects the supply source for the second cleaning fluid to the on / off section 125b. In this embodiment, since tap water is used as the second cleaning fluid, the pipe 125a is connected to a tap water faucet, for example, via a flexible hose. Alternatively, the pipe 125a may be connected to a container similar to the storage tank 112, and the second cleaning fluid, such as tap water, may be supplied from that container.

[0105] The opening / closing section 125b changes the supply amount of the second cleaning fluid supplied to the second cleaning fluid tank 123. The opening / closing section 125b is connected to the piping 125a and the supply pipe 125c, and the second cleaning fluid, whose supply amount has been adjusted, is sent to the second cleaning fluid tank 123 via the supply pipe 125c.

[0106] A valve (not shown) within the opening / closing section 125b can be arbitrarily adjusted to change its opening degree between fully open and fully closed. The opening degree of the valve in the opening / closing section 125b is controlled by the control unit 5. That is, the control unit 5 controls the opening / closing section 125b of the second supply unit 125 to adjust the amount of second cleaning liquid supplied to the second cleaning liquid tank 123. The valve in the opening / closing section 125b is fitted with a valve mechanism similar to that of the opening / closing section 115b of the coating unit 110.

[0107] The supply pipe 125c connects the opening / closing section 125b to the second cleaning fluid tank 123. The second cleaning fluid supplied from the supply pipe 125c flows along the side wall in the +Y direction of the second cleaning fluid tank 123 and accumulates at the bottom of the second cleaning fluid tank 123. Note that the arrangement of the components of the second supply section 125 described above is just an example and is not limited to that described above.

[0108] The defining portion 127 defines the volume of the second cleaning fluid to be stored in the second cleaning fluid tank 123. The defining portion 127 is positioned at the bottom of the second cleaning fluid tank 123, closer to the -Y direction. The defining portion 127 is a plate-shaped partition member. The defining portion 127 is aligned with the XZ plane and protrudes upward from the bottom of the second cleaning fluid tank 123. The second cleaning fluid is stored in the region partitioned by the side walls and bottom of the second cleaning fluid tank 123 and the defining portion 127.

[0109] In Figure 2, the above area is shown as hatched with diagonal lines. Figure 2 shows the state in the second cleaning fluid tank 123 where a portion of the lower part of the cleaning member 121 is submerged in the second cleaning fluid stored therein, and the tank is full of the second cleaning fluid. If more second cleaning fluid is supplied from this state, the second cleaning fluid will overflow the designated section 127 and spill out in the -Y direction. The spilled second cleaning fluid is discharged from the discharge section 129 to the outside of the second cleaning fluid tank 123. The second cleaning fluid discharged from the discharge section 129 may be stored in a drain tank or the like.

[0110] The second cleaning liquid tank 123 may be equipped with a device for measuring the height of the liquid level of the second cleaning liquid stored therein, i.e., the liquid level. A device similar to the liquid volume sensor 114 of the coating section 110 can be used for this purpose.

[0111] The cleaning member 121 cleans the adhesive layer Ad of the conveyor belt 33. The cleaning member 121 is a substantially cylindrical brush member with its central axis aligned with the X-axis. In the direction aligned with the X-axis, the width of the cleaning member 121 is equal to or greater than the width of the adhesive layer Ad. Although not shown in the illustration, the cleaning member 121 is equipped with a support member and a drive motor. The cleaning member 121 is supported by the support member, and a portion of its lower part is immersed in the second cleaning fluid of the second cleaning fluid tank 123. As a result, the cleaning member 121 is coated with the second cleaning fluid and rotated counterclockwise around its central axis by the drive motor.

[0112] The cleaning member 121 rotates while coated with the second cleaning solution and comes into contact with the adhesive layer Ad, scraping off dirt such as pigment coatings. As described above, in the direction along the X-axis, the length of the cleaning member 121 is greater than or equal to the length of the adhesive layer Ad, so the cleaning member 121 comes into contact with the entire width of the adhesive layer Ad through contact. When the first cleaning solution is applied, the adhesive layer Ad swells, and the pigment coatings and dirt are lifted, causing the adhesive layer Ad and the cleaning member 121 to slide against each other. As a result, the pigment coatings and dirt are scraped off and removed from the adhesive layer Ad.

[0113] Foreign matter such as pigment coatings and dirt are transferred from the adhesive layer Ad to the second cleaning liquid tank 123 by the rotation of the cleaning member 121. Specifically, after sliding against the adhesive layer Ad, the cleaning member 121 rotates and immerses itself in the second cleaning liquid in the second cleaning liquid tank 123, transferring the foreign matter scraped off the adhesive layer Ad to the second cleaning liquid tank 123 and becoming clean. Due to the rotation of the conveyor belt 33, the area of ​​the adhesive layer Ad that has slid against the cleaning member 121 moves to the wiping section 131.

[0114] The wiping section 131 slides against the adhesive layer Ad, scraping off the second cleaning liquid and other substances adhering to the adhesive layer Ad. The wiping section 131 is a roughly plate-shaped rubber member. The second cleaning liquid scraped off the surface of the adhesive layer Ad falls downward and is discharged from the discharge section 129. Due to the rotation of the conveyor belt 33, the area of ​​the adhesive layer Ad that has slid against the wiping section 131 moves to the wiping section 133.

[0115] The wiping section 133 absorbs and removes trace amounts of the second cleaning solution remaining on the adhesive layer Ad. The wiping section 133 is a substantially cylindrical sponge member with its central axis aligned with the X-axis. Multiple wiping sections 133 are arranged. In the direction along the X-axis, the width of each wiping section 133 is shorter than the width of the adhesive layer Ad. When viewed from above, the wiping sections 133 are arranged alternately. As the adhesive layer Ad passes through multiple wiping sections 133, the entire area of ​​the adhesive layer Ad along the X-axis slides against one of the wiping sections 133.

[0116] Each wiping unit 133 rotates counterclockwise by an electric motor (not shown). Due to the rotation of the conveyor belt 33, the area of ​​the adhesive layer Ad that has slid with the wiping unit 133 passes through the detection unit 130 described above and returns from the non-conveyor path to the conveyor path. As a result, the adhesive layer Ad of the conveyor belt 33 is cleaned.

[0117] The second displacement unit 126 changes the contact and separation of the cleaning member 121, wiping unit 131, and wiping unit 133 of the cleaning mechanism 120 with respect to the adhesive layer Ad of the conveyor belt 33. When the cleaning mechanism 120 is in contact with the adhesive layer Ad, the adhesive layer Ad is cleaned, and when the cleaning mechanism 120 is separated from the adhesive layer Ad, the adhesive layer Ad is not cleaned.

[0118] The second displacement unit 126 is located below the second cleaning fluid tank 123. The second displacement unit 126 is electrically connected to the control unit 5. Although not shown in the figures, the second displacement unit 126 includes known actuators or electric motors. The second displacement unit 126 is controlled by the control unit 5 to displace the cleaning mechanism 120 in the vertical direction. The control unit 5 controls the displacement of the first displacement unit 116 and the displacement of the second displacement unit 126 individually. This allows the coating unit 110 and the cleaning mechanism 120 to be brought into contact with and separated from each other as needed.

[0119] Figure 2 shows the state in which the cleaning member 121, wiping section 131, and wiping section 133 of the cleaning mechanism 120 are in contact with the adhesive layer Ad. The second displacement section 126 can move the cleaning mechanism 120 downward from the above state, thereby separating the cleaning mechanism 120 from the adhesive layer Ad. This allows the cleaning mechanism 120 to be separated from the adhesive layer Ad when it is not necessary to clean the adhesive layer Ad.

[0120] Furthermore, during the recording operation in which the recording device 1 performs recording, the adhesive layer Ad will be cleaned at least by the cleaning mechanism 120. In other words, if the adhesive layer Ad is clean, or if the adhesion of pigment film or the like to the adhesive layer Ad is minor and there is no need to apply the first cleaning solution, the coating member 111 may be separated from the adhesive layer Ad by the first displacement unit 116 even during the recording operation.

[0121] Next, we will describe the control of the coating unit 110 and the cleaning mechanism 120 by the control unit 5. The following explanation will refer to Figures 1 and 2.

[0122] The control unit 5 causes the coating unit 110 to apply the first cleaning solution to the adhesive layer Ad while the recording device 1 is performing a recording operation. At the same time, the control unit 5 also causes the cleaning mechanism 120 to clean the adhesive layer Ad. Since the pigment film is formed on the adhesive layer Ad during the recording operation, the formation of the pigment film can be suppressed by applying the first cleaning solution and cleaning during the recording operation.

[0123] The control unit 5 causes the coating unit 110 to apply the first cleaning solution to the adhesive layer Ad during periods other than when the recording device 1 is performing recording operations. At this time, the control unit 5 also causes the cleaning mechanism 120 to perform cleaning of the adhesive layer Ad. By applying the first cleaning solution and performing cleaning before or after the recording operation, the recording operation can be started with the adhesive layer Ad in a clean state.

[0124] Based on the liquid level sensor 114 detecting that the amount of liquid stored in the first cleaning liquid tank 113 has fallen below a threshold, the control unit 5 prompts the user to replenish the first cleaning liquid in the first cleaning liquid tank 113 via the control panel 80, which is the notification unit. The user does not need to manage the amount of liquid stored in the first cleaning liquid tank 113, improving user convenience.

[0125] The method of notifying the decrease in the storage volume via the control panel 80 may be, for example, by a warning sound, voice, or text display on a liquid crystal display. The recording device 1 may also be equipped with an indicator light in a housing (not shown) or the like as a notification unit, and the decrease in the storage volume may be notified by the illumination of the indicator light.

[0126] The control unit 5 may control the first supply unit 115 to supply the first cleaning liquid to the first cleaning liquid tank 113 based on the liquid level sensor 114 detecting that the amount of liquid stored in the first cleaning liquid tank 113 has fallen below a threshold. Since the first cleaning liquid is automatically supplied to the first cleaning liquid tank 113, user convenience is improved.

[0127] The aforementioned storage volume threshold is, for example, 70% when the storage volume of the first washing liquid tank 113 shown in Figure 2 is considered to be 100%.

[0128] Based on the detection unit 130 detecting that the adhesive strength of the adhesive layer Ad has fallen below a threshold, the control unit 5 causes the coating unit 110 to apply the first cleaning solution to the adhesive layer Ad and the cleaning mechanism 120 to clean the adhesive layer Ad. As pigment film formation and soiling progress on the adhesive layer Ad, the adhesive strength gradually decreases. Therefore, depending on the degree of pigment film formation and soiling, the first cleaning solution is automatically applied to the adhesive layer Ad and cleaning is performed. This restores the adhesive strength of the adhesive layer Ad, suppresses deterioration of the adhesive layer Ad, and further improves the operating rate. In addition, since the first cleaning solution is automatically applied in response to the decrease in adhesive strength, user convenience is improved.

[0129] Based on the detection unit 130 detecting that the adhesive force of the adhesive layer Ad has fallen below a threshold, the control unit 5 controls the first displacement unit 116 to bring the coating member 111 of the coating unit 110 into contact with the adhesive layer Ad of the conveyor belt 33, thereby performing the application of the first cleaning solution to the adhesive layer Ad and causing the cleaning mechanism 120 to clean the adhesive layer Ad. Also, based on the detection unit 130 detecting that the adhesive force of the adhesive layer Ad has fallen below a threshold, the control unit 5 controls the first displacement unit 116 to move the coating member 111 of the coating unit 110 away from the adhesive layer Ad of the conveyor belt 33, thereby stopping the application of the first cleaning solution to the adhesive layer Ad.

[0130] In the adhesive layer Ad, if the adhesive strength decreases due to the formation of a pigment film or the progression of dirt, the first cleaning solution is automatically applied to the adhesive layer Ad. Furthermore, once the adhesive strength is restored by applying and cleaning with the first cleaning solution, the application of the first cleaning solution to the adhesive layer Ad is automatically stopped. This improves user convenience and reduces the waste of the first cleaning solution.

[0131] The aforementioned adhesion threshold is, for example, 70% when the initial adhesion of the adhesive layer Ad is considered to be 100%.

[0132] The above describes a method for applying the first cleaning solution according to the adhesive strength of the adhesive layer Ad, but it is not limited to this. The control unit 5 may change the application and stopping of the first cleaning solution depending on the operating time of the recording device 1, etc. For example, the following methods can be specifically mentioned.

[0133] First, after a predetermined time has elapsed since the start of the recording operation, the application of the first cleaning solution to the adhesive layer Ad begins. The predetermined time is, for example, 30 minutes. Next, after, for example, 30 minutes have elapsed since the start of the application of the first cleaning solution, the application of the first cleaning solution may be stopped. Alternatively, the application of the first cleaning solution may be continued even after 30 minutes have elapsed.

[0134] Furthermore, the user can choose whether to start and stop the application of the first cleaning solution in accordance with the adhesive strength of the adhesive layer Ad, or in accordance with the elapsed time, at any time before, after, or during the recording operation.

[0135] According to this embodiment, the following effects can be obtained.

[0136] The downtime due to maintenance work can be reduced, thereby improving the operating rate of the recording device 1. Specifically, in the coating section 110, the adhesive layer Ad swells due to the first cleaning solution, making it easier to lift and remove pigment coatings and dirt from the adhesive layer. Then, the adhesive layer Ad is cleaned by the cleaning mechanism 120, removing the pigment coatings and dirt. As a result, the frequency of maintenance work such as replacing the adhesive layer Ad or the conveyor belt 33 is reduced, shortening the downtime of the recording device 1. Therefore, a recording device 1 with improved operating rate can be provided.

[0137] Since the coating unit 110 that applies the first cleaning solution to the adhesive layer Ad and the cleaning mechanism 120 that cleans the adhesive layer Ad are separate components, it is easier to ensure sufficient time for the adhesive layer Ad to swell. In addition, the concentration of the first cleaning solution stored in the first cleaning solution tank 113 is less likely to change, making concentration control easier.

[0138] The following describes the conclusions drawn from the embodiment.

[0139] The recording device is characterized by comprising: an adhesive layer to which a fabric can be attached; a conveyor belt for transporting the fabric attached to the adhesive layer; a recording unit for dispensing pigment ink onto the transported fabric to perform recording; an application unit for applying a first cleaning solution having the property of swelling the adhesive layer to the adhesive layer; and a cleaning mechanism positioned ahead of the application unit in the direction of travel of the conveyor belt, for cleaning the adhesive layer with a second cleaning solution that does not have the above property.

[0140] This configuration reduces downtime due to maintenance work and improves the operating rate of the recording device. Specifically, in the coating section, the adhesive layer swells due to the first cleaning solution, making it easier to lift and remove pigment coatings and dirt from the adhesive layer. Then, the adhesive layer is cleaned by the cleaning mechanism, removing the pigment coatings and dirt. As a result, the frequency of maintenance work such as replacing the adhesive layer or the conveyor belt is reduced, shortening the downtime of the recording device. Therefore, it is possible to provide a recording device with improved operating rate.

[0141] In the recording device described above, when the direction intersecting the transport direction is defined as the width direction, the coating section applies the first cleaning solution to the entire area of ​​the adhesive layer in the width direction by a contact method or a non-contact method.

[0142] With this configuration, the first cleaning solution is applied completely, making it easier to remove pigment coatings and dirt from the entire adhesive layer.

[0143] The recording device includes a first displacement unit that changes the contact and separation of the coating unit with respect to the conveyor belt, a second displacement unit that changes the contact and separation of the cleaning mechanism with respect to the conveyor belt, and a control unit that individually controls the first displacement unit and the second displacement unit.

[0144] With this configuration, the coating unit and the cleaning mechanism can be brought into contact with or separated from the conveyor belt as needed.

[0145] In the recording device described above, the coating unit has a first cleaning liquid tank for storing the first cleaning liquid, and the control unit causes the coating unit to apply the first cleaning liquid to the adhesive layer during the recording operation.

[0146] The pigment film is formed during the recording operation. With this configuration, the first cleaning solution is applied and cleaned during the recording operation, which can suppress the formation of the pigment film.

[0147] In the recording device described above, the coating unit has a first cleaning liquid tank for storing the first cleaning liquid, and the control unit causes the coating unit to apply the first cleaning liquid to the adhesive layer during periods other than the recording operation in which recording is performed.

[0148] With this configuration, by applying the first cleaning solution before or after the recording operation and performing cleaning, the recording operation can be started with the adhesive layer in a clean state.

[0149] The recording device includes a liquid level sensor for detecting the amount of first cleaning liquid stored in the first cleaning liquid tank, and a notification unit. The control unit prompts the replenishment of the first cleaning liquid to the first cleaning liquid tank via the notification unit when the amount of liquid detected by the liquid level sensor falls below a threshold.

[0150] This configuration eliminates the need for users to manage the amount of liquid stored in the first cleaning tank, thus improving user convenience.

[0151] The recording device includes a liquid volume sensor that detects the amount of first cleaning liquid stored in the first cleaning liquid tank, and a supply unit that supplies the first cleaning liquid to the first cleaning liquid tank. The control unit controls the supply unit to supply the first cleaning liquid to the first cleaning liquid tank based on the amount of liquid detected by the liquid volume sensor falling below a threshold.

[0152] This configuration improves user convenience because the first cleaning solution is automatically supplied to the first cleaning solution tank.

[0153] The recording device includes a detection unit for detecting the adhesive strength of the adhesive layer, and the control unit causes the coating unit to apply the first cleaning solution to the adhesive layer based on the detection unit's detection of the adhesive strength falling below a threshold.

[0154] In the adhesive layer, as pigment film formation and soiling progress, the adhesive strength gradually decreases. With this configuration, the first cleaning solution is automatically applied to the adhesive layer according to the degree of pigment film formation and soiling. This restores the adhesive strength of the adhesive layer Ad, suppresses deterioration of the adhesive layer, and further improves the operating rate. In addition, since the first cleaning solution is applied automatically, user convenience is improved.

[0155] The recording device described above includes a circulation unit for circulating the first cleaning liquid stored in the first cleaning liquid tank, and a filter unit for filtering the first cleaning liquid.

[0156] The first cleaning solution for the adhesive layer may contain pigment films and dirt that have migrated from the adhesive layer. With this configuration, in the above case, the first cleaning solution can be filtered and circulated for reuse.

[0157] The recording device includes a detection unit for detecting the adhesive force of the adhesive layer. The control unit controls the first displacement unit to bring the coating unit into contact with the conveyor belt and apply the first cleaning solution to the adhesive layer based on the adhesive force detected by the detection unit falling below a threshold. The control unit controls the first displacement unit to move the coating unit away from the conveyor belt and stop applying the first cleaning solution to the adhesive layer based on the adhesive force detected by the detection unit rising above a threshold.

[0158] In the adhesive layer, as pigment film formation and soiling progress, the adhesive strength gradually decreases. With this configuration, when the adhesive strength decreases, i.e., as pigment film formation and soiling progress, the first cleaning solution is automatically applied to the adhesive layer. Furthermore, when the adhesive strength is restored by applying the first cleaning solution and cleaning, the application of the first cleaning solution to the adhesive layer is automatically stopped. This improves user convenience and reduces the waste of the first cleaning solution.

[0159] In the recording device described above, the first cleaning solution does not contain a surfactant.

[0160] This configuration suppresses the generation of foam caused by the first washing solution. [Explanation of symbols]

[0161] 1...Recording device, 5...Control unit, 33...Conveyor belt, 60...Recording unit, 80...Operation panel as notification unit, 110...Coating unit, 113...First cleaning liquid tank, 114...Liquid volume sensor, 115...First supply unit as supply unit, 116...First displacement unit, 118a...Filter unit, 118b...Circulation unit, 120...Cleaning mechanism, 126...Second displacement unit, 130...Detection unit, 130...Detection unit, Ad...Adhesive layer, P...Fabric.

Claims

1. A conveyor belt having an adhesive layer to which a fabric can be attached, and the fabric attached to the adhesive layer is conveyed. A recording unit that ejects pigment ink onto the conveyed fabric to record information, A coating unit for applying a first cleaning solution having the property of swelling the adhesive layer to the adhesive layer, A recording device characterized by comprising a cleaning mechanism positioned ahead of the coating portion in the direction of travel of the conveyor belt, which cleans the adhesive layer with a second cleaning liquid that does not have the aforementioned characteristics.

2. When the direction intersecting the conveying direction of the aforementioned fabric is defined as the width direction, The recording device according to claim 1, wherein the coating portion applies the first cleaning solution to the entire area of ​​the adhesive layer in the width direction by a contact method or a non-contact method.

3. A first displacement unit that changes the contact and separation of the coating portion with respect to the conveyor belt, A second displacement unit that changes the contact and separation of the cleaning mechanism with respect to the conveyor belt, The recording device according to claim 1, further comprising a control unit for individually controlling the first displacement unit and the second displacement unit.

4. The coating section has a first cleaning liquid tank for storing the first cleaning liquid, The recording apparatus according to claim 3, wherein the control unit causes the coating portion to apply the first cleaning solution to the adhesive layer during the recording operation that performs the recording.

5. The coating section has a first cleaning liquid tank for storing the first cleaning liquid, The recording apparatus according to claim 3, wherein the control unit causes the first cleaning solution to be applied to the adhesive layer in the coating portion during periods other than the recording operation in which the recording is performed.

6. A liquid volume sensor for detecting the amount of the first cleaning liquid stored in the first cleaning liquid tank, Equipped with a news department, The recording device according to claim 4 or 5, wherein the control unit prompts the replenishment of the first cleaning liquid to the first cleaning liquid tank via the notification unit based on the fact that the amount of liquid detected by the liquid volume sensor has fallen below a threshold.

7. A liquid volume sensor for detecting the amount of the first cleaning liquid stored in the first cleaning liquid tank, The system comprises a supply unit that supplies the first cleaning liquid to the first cleaning liquid tank, The recording device according to claim 4 or 5, wherein the control unit controls the supply unit to supply the first cleaning liquid to the first cleaning liquid tank based on the fact that the amount of liquid detected by the liquid volume sensor has fallen below a threshold.

8. The system includes a detection unit for detecting the adhesive strength of the adhesive layer, The recording apparatus according to claim 3, wherein the control unit causes the coating unit to apply the first cleaning solution to the adhesive layer based on the fact that the adhesive force detected by the detection unit has fallen below a threshold.

9. A circulation unit for circulating the first cleaning liquid stored in the first cleaning liquid tank, A recording device according to claim 4 or claim 5, comprising a filter unit for filtering the first cleaning solution.

10. The system includes a detection unit for detecting the adhesive strength of the adhesive layer, The control unit, Based on the detection unit finding that the adhesive force has fallen below a threshold, the first displacement unit is controlled to bring the coating unit into contact with the conveyor belt and to perform the application of the first cleaning liquid to the adhesive layer. The recording device according to claim 3, wherein, based on the detection unit's detection of the adhesive force being equal to or greater than the threshold, the first displacement unit is controlled to separate the coating unit from the conveyor belt, thereby stopping the application of the first cleaning liquid to the adhesive layer.

11. The recording apparatus according to claim 1, wherein the first cleaning solution does not contain a surfactant.

Images