Conveying device and printing device

Abstract

Provided is a conveyance device and a printing device that can simultaneously achieve a case in which a load acting on a conveyance belt is suppressed and a case in which the removal performance of foreign matter on the surface of the conveyance belt is improved. A conveyance section (20) conveys a medium (M) by moving an adhesive belt (24). The conveyance section (20) includes a vapor application section (26) and a cleaning section (46). The vapor application section (26) applies heated vapor (VP) to a surface (24A) of the adhesive belt (24) that is separated from the medium (M). The cleaning section (46) cleans the surface (24A) to which the vapor VP is applied by the vapor application section (26).

Description

Technical Field

[0001] This invention relates to a conveying device and a printing device. Background Technology

[0002] Patent Document 1 discloses a recording medium conveying device comprising a conveyor belt for conveying the recording medium, a cleaning fluid application section for applying cleaning fluid to the conveyor belt after the recording medium has been peeled off, a removal component for removing the cleaning fluid from the conveyor belt, and a pressure variable mechanism for making the pressure at which the removal component contacts the belt variable. The cleaning fluid application section is composed of a water spray pipe and a pump, etc.

[0003] In a structure where a cleaning fluid is applied to the surface of a moving conveyor belt, as in the cleaning fluid application section of Patent Document 1, a method for increasing the pressure of the cleaning fluid is provided as a way to improve the removal performance of foreign matter on the surface.

[0004] However, with increased cleaning fluid pressure, there is a possibility that the cleaning fluid may scatter around the recording media conveying device due to the collision between the high-pressure cleaning fluid and the conveyor belt.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2021-134071 Summary of the Invention

[0006] The conveying device according to the present invention for solving the above-mentioned problems is characterized in that it conveys a medium by moving a conveyor belt, the conveying device comprising: a steam supply unit that supplies heated steam to the surface of the conveyor belt separated from the medium; and a cleaning unit that cleans the surface to which the steam has been supplied by the steam supply unit.

[0007] The printing apparatus according to the present invention for solving the above-mentioned problems is characterized by comprising: a conveying device that conveys a medium by moving a conveyor belt; a recording unit that records on the moving medium; the conveying device comprising: a steam imparting unit that imparts heated steam to the surface of the conveyor belt separated from the medium; and a cleaning unit that cleans the surface to which the steam has been imparted by the steam imparting unit. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the internal structure of the printer according to Embodiment 1.

[0009] Figure 2 This is a block diagram illustrating the various parts of the printer involved in Embodiment 1.

[0010] Figure 3 This is a schematic diagram of the vapor supply section and adhesive tape according to Embodiment 1.

[0011] Figure 4 This is a schematic diagram of the cleaning unit according to Embodiment 1.

[0012] Figure 5 This is a schematic diagram of the internal structure of the printer according to Embodiment 2.

[0013] Figure 6 This is a schematic diagram of the cleaning unit involved in Embodiment 2.

[0014] Figure 7 This is a schematic diagram of the cleaning unit involved in a variation of Embodiment 2.

[0015] Figure 8 This is a schematic diagram of the internal structure of the printer according to Embodiment 3.

[0016] Figure 9 A block diagram illustrating the various parts of the printer involved in Embodiment 3.

[0017] Figure 10 This is a schematic diagram illustrating the flow of steam in the printer according to Embodiment 3.

[0018] Figure 11 A block diagram illustrating the various parts of the printer involved in Embodiment 4.

[0019] Figure 12 This is a block diagram illustrating the various parts of the printer involved in Embodiment 5.

[0020] Figure 13 A block diagram illustrating the various parts of the printer involved in other variations of Example 1.

[0021] Figure 14 This is a partial perspective view of the cleaning section involved in other variations of Example 2.

[0022] Figure 15 A schematic diagram of the vapor supply section involved in other variations of Example 3.

[0023] Figure 16 This is a partial perspective view of the printer involved in another variation of Example 4. Detailed Implementation

[0024] The present invention will now be described in summary.

[0025] The conveying device according to the first method is characterized in that the conveying device conveys a medium by moving a conveyor belt, and includes: a steam supply unit that supplies heated steam to the surface of the conveyor belt that has been separated from the medium; and a cleaning unit that cleans the surface to which the steam has been supplied by the steam supply unit.

[0026] According to this method, foreign matter adhering to the surface of the conveyor belt becomes easier to float off the surface by the steam. That is, since steam is used instead of liquid to remove foreign matter adhering to the surface of the conveyor belt, it is possible to create a state in which foreign matter-containing liquid, which would otherwise be generated when using cleaning fluid (liquid), is easily removed.

[0027] The conveying device involved in the second method is characterized in that, in the first method, the surface is defined as a target area from a first area to a second area cleaned by the cleaning unit, and a cooling unit is provided to cool at least a portion of the target area.

[0028] According to this method, since at least a portion of the target area is cooled by the cooling section, moisture in the air and a portion of the moisture contained in the vapor are condensed in the target area. Therefore, since foreign matter can be easily removed by supplying moisture to the target area to cover it, the foreign matter removal performance can be improved.

[0029] The conveying device involved in the third method is characterized in that, in the second method, the cooling unit cools the second region.

[0030] According to this method, condensation is unlikely to occur between the first and second regions, but will occur in the second region. Furthermore, the moisture condensed in the second region will be recovered by the cleaning section. Thus, the occurrence of water droplets falling from the surface between the first and second regions can be suppressed.

[0031] The fourth method of the conveying device is characterized in that, in any one of the first to third methods, it includes a control unit that controls the operation of the steam supply unit, and the control unit controls the operation of the steam supply unit according to the state of the surface.

[0032] According to this method, when the surface is in a state where a large amount of foreign matter is attached, the control unit can control the increase of at least one of the heating amount of the steam supplied by the steam supply unit and the steam supply amount. By increasing the heating amount in the steam supply unit, the temperature of the steam rises, and the kinetic energy of the steam molecules increases. Due to the intense thermal motion of the molecules in the higher-temperature steam, the thermal motion of the molecules contained in the lower-temperature foreign matter becomes more intense, thereby weakening the intermolecular bonding of the substances contained in the foreign matter. In other words, the foreign matter softens due to the increased temperature. Furthermore, by increasing the steam supply amount to the conveyor belt, the foreign matter becomes easier to dilute through the steam. Therefore, the foreign matter removal performance can be further improved.

[0033] The fifth method of the conveying device is characterized in that, in any one of the first to third methods, it includes a control unit that controls the operation of the steam supply unit, and the control unit controls the operation of the steam supply unit according to the moving speed of the conveyor belt.

[0034] According to this method, when the conveyor belt's moving speed increases, the control unit can implement control to increase at least one of the heating amount of the steam supplied by the steam supply unit and the steam supply amount. Therefore, even if the time for the steam to be supplied to the surface becomes shorter, the reduction in foreign matter removal performance can be suppressed because at least one of the steam supplied to the surface at the temperature required for foreign matter removal and the amount of steam required for foreign matter removal is supplied.

[0035] The sixth method of the conveying device is characterized in that, in any one of the first to third methods, the medium is a recording medium for the recorded image, and includes a control unit that controls the operation of the vapor supply unit, and the control unit controls the operation of the vapor supply unit according to the duty cycle of the image.

[0036] When the duty cycle is large, the amount of foreign matter adhering to the surface may increase due to the increased amount of recording material used in the recording.

[0037] According to this method, when the surface is in a state where a large amount of foreign matter is attached, the control unit can control the increase of at least one of the heating amount of the steam supplied by the steam supply unit and the steam supply amount. By increasing the heating amount in the steam supply unit, the foreign matter, whose temperature has risen, softens. Furthermore, by increasing the steam supply amount in the steam supply unit, the foreign matter becomes easier to dilute by the steam. Therefore, the foreign matter removal performance can be further improved.

[0038] The conveying device according to the seventh method is characterized in that, in any one of the fourth to sixth methods, it includes an airflow generating unit that generates airflow toward the back side of the conveyor belt opposite to the surface, and the control unit adjusts the amount of airflow generated in the airflow generating unit according to the amount of steam generated from the steam supply unit.

[0039] According to this method, when a portion of the vapor supplied to the surface from the vapor supply section is about to flow toward the back side via the outer side compared to the end of the conveyor belt, the airflow generated in the airflow generating section will push a portion of the vapor back to the area on the surface side.

[0040] Here, when the amount of steam generated from the steam supply section is large, since it is possible to implement control to increase the amount of airflow generated in the airflow generation section, it is possible to suppress the situation where a portion of the steam diffuses to other parts via the area on the back side.

[0041] The conveying device involved in the eighth method is characterized in that, in the seventh method, it includes a heating unit that heats the arrival area reached by the airflow in the back side, and the control unit controls the heating temperature in the heating unit according to the amount of airflow generated.

[0042] According to this method, even structures prone to condensation due to temperature drops caused by the airflow can suppress condensation on the back surface by heating the reached area using the heating element.

[0043] The conveying device involved in the ninth method is characterized in that, in any one of the first to eighth methods, the cleaning unit has: a scraping member that scrapes foreign matter attached to the surface while in contact with the surface; and a recovery unit that recovers the foreign matter scraped off by the scraping member, wherein a guide part is provided on the scraping member to guide the foreign matter to the recovery unit.

[0044] According to this method, the foreign matter scraped off by the scraping member flows down along the guide portion and is collected by the recycling portion. Therefore, since the foreign matter becomes less likely to remain between the scraping member and the surface, the reduction in cleaning performance achieved by the cleaning portion can be suppressed.

[0045] The conveying device involved in the tenth method is characterized in that, in the ninth method, the cleaning section has an air supply section that supplies air toward the recovery section, and at least a portion of the scraping member is supplied with air between the air supply section and the recovery section.

[0046] According to this method, the foreign matter adhering to the scraping member is moved toward the recovery unit by the pressure of the air supplied by the air supply unit and is recovered by the recovery unit. Thus, the re-adhesion of the foreign matter adhering to the scraping member onto the surface can be suppressed.

[0047] The printing apparatus according to the eleventh method is characterized in that it comprises: a conveying device that conveys a medium by moving a conveyor belt; a recording unit that records on the moving medium; the conveying device comprising: a steam supply unit that supplies heated steam to the surface of the conveyor belt separated from the medium; and a cleaning unit that cleans the surface to which the steam has been supplied by the steam supply unit.

[0048] According to this method, by performing the same action as in the first method, a state in which the foreign matter-containing liquid is suppressed from scattering can be created, making it easy to remove the foreign matter. In other words, it is possible to suppress the possibility of the printing apparatus becoming contaminated due to the scattering of liquid containing the foreign matter.

[0049] Implementation Method 1

[0050] Hereinafter, a printer 10, which is an example of a printing apparatus according to Embodiment 1 of the present invention, will be specifically described.

[0051] like Figure 1 As shown, printer 10 is installed on floor 2 of factory 1. Printer 10 records media M. As an example of media M, it may be cloth or paper. Furthermore, as an example, media M is pulled out from the front of printer 10. In addition, the XYZ coordinate system shown in each figure is an orthogonal coordinate system.

[0052] The X-direction is the width direction of the printer 10 and is horizontal. When viewing the printer 10 from the front, the direction to the left of the X-direction is designated as the +X-direction, and the direction to the right is designated as the -X-direction. Furthermore, the X-direction corresponds to the width direction of the medium M.

[0053] The Y direction is the depth direction of printer 10 and is horizontal. When viewing printer 10 from the front, the forward direction is set as the +Y direction, and the depth direction is set as the -Y direction.

[0054] The Z-axis runs along the direction of gravity. The upward direction of the Z-axis is designated as the +Z-axis, and the downward direction as the -Z-axis. The +Z-axis represents the height of the printer 10.

[0055] The printer 10 includes a recording section 16 and a transport section 20, which is one example of a transport device. Furthermore, as an example, the printer 10 is configured to include a main body section 12, a main body cover 14, and an operation section 15. Figure 2 As an example, printer 10 has a recording mode for recording on media M and a maintenance mode for cleaning and replacing parts of printer 10.

[0056] The main body 12 of the device is configured as a base for mounting the various parts of the printer 10.

[0057] The main cover 14 is an external component that covers the various parts of the printer 10.

[0058] The operation unit 15 is configured to include a touch panel (not shown) and operation buttons. The operation unit 15 allows for the setting of the operation of various parts of the printer 10.

[0059] The recording unit 16 is provided on the main body 12 of the device. Furthermore, the recording unit 16 records on a medium M that moves in the +Y direction. Specifically, the recording unit 16 includes a recording head 17 and a carriage 18 that supports the recording head 17 in a manner that allows it to reciprocate along the X direction.

[0060] The recording head 17 has a plurality of nozzles (not shown) and is configured in the +Z direction relative to the adhesive tape 24 described later. Furthermore, the recording head 17 can record an image onto the medium M by ejecting ink K, as an example of droplets, onto the recording surface of the medium M through the plurality of nozzles (not shown). In other words, the medium M is a recording medium for recording images. Additionally, ink K is also an example of a recording material.

[0061] like Figure 1 as well as Figure 2As shown, as an example, the conveying unit 20 includes a belt unit 21, a vapor supply unit 26, a surface detection unit 42, a cooling unit 44, a cleaning unit 46, a moving unit 62, and a control unit 64. The conveying unit 20 is an example of a conveying device that conveys the medium M by moving the adhesive belt 24 described later. The conveying unit 20 is provided on the main body 12 of the device.

[0062] In addition, as an example, the control unit 64 functions as a control unit that controls not only the operation of the conveying unit 20 but also the operation of each part of the printer 10.

[0063] like Figure 1 As shown, as an example, the belt unit 21 is configured to include a drive roller 22, a driven roller 23, an adhesive belt 24, and a motor (not shown).

[0064] The drive roller 22 is positioned downstream in the +Y direction. The driven roller 23 is positioned upstream in the +Y direction. Both the drive roller 22 and the driven roller 23 have a rotation axis along the X direction. The rotation of the drive roller 22 is controlled by the control unit 64, which will be described later.

[0065] The adhesive tape 24 is an example of a conveyor belt and is configured as a seamless belt formed by joining the two ends of an elastic flat plate. Furthermore, the adhesive tape 24 is wound around the drive roller 22 and the driven roller 23. In other words, the adhesive tape 24 is provided on the main body 12 of the device and can convey the medium M in the +Y direction by making a circumferential movement. The direction in which the adhesive tape 24 moves in a circumferential movement is defined as the +R direction. The outer peripheral surface of the adhesive tape 24 is defined as surface 24A, and the inner peripheral surface is defined as back surface 24B. When the entire path in which the adhesive tape 24 moves in a circumferential movement is defined as a circumferential path, this circumferential path has a conveying path for conveying the medium M by adhesive means, and a non-conveying path as a path other than the conveying path. The medium M is conveyed in the +Y direction on the conveying path. The adhesive tape 24 moving on the non-conveying path is cleaned by the cleaning unit 46, which will be described later.

[0066] As an example, surface 24A is adhesive by being coated with an adhesive (not shown), and is able to support and absorb the medium M. Adhesiveness means the property of being able to temporarily bond with other components and to be peeled off from the bonded state.

[0067] The portion of surface 24A located in the +Z direction relative to the center of drive roller 22 and along the XY plane is designated as upper surface portion 25A. Upper surface portion 25A supports the medium M. Furthermore, the portion of surface 24A that is wound around drive roller 22 is designated as curved portion 25B. Moreover, the portion of surface 24A located in the -Z direction relative to the center of drive roller 22 and along the XY plane is designated as lower surface portion 25C.

[0068] In belt unit 21, the medium M is stripped from the curved section 25B by winding it up with a take-up roller (not shown).

[0069] As an example, the vapor supply section 26 is located at the downstream end in the +Y direction, opposite the lower surface section 25C in the Z direction. Furthermore, the vapor supply section 26 is located downstream of the curved section 25B in the +R direction. The vapor supply section 26 supplies heated vapor VP to the surface 24A of the adhesive tape 24 that has separated from the medium M. Figure 3 That is, the vapor supply section 26 supplies vapor VP to at least a portion of the surface 24A of the adhesive tape 24 moving on a non-conveying path. In addition, the vapor VP also includes water particles suspended in the atmosphere.

[0070] like Figure 3 As shown, as an example, the steam supply unit 26 includes a storage tank 28, a heater 32, a base plate 34 with multiple holes 34A, a supply pipe 37, a supply pump 38, a pressurization pipe 39, and a compressor 41.

[0071] As an example, the reservoir 28 is configured as a hollow cuboid extending in the X direction. The length of the reservoir 28 in the X direction is longer than the length of the adhesive tape 24 in the X direction. One end of the supply pipe 37 and one end of the pressurization pipe 39 are connected to the side of the reservoir 28. An opening 29A is provided on the upper wall 29 in the +Z direction of the reservoir 28, penetrating towards the surface 24A. Furthermore, the openings 29A are spaced apart in the X direction. In other words, adjacent openings 29A in the X direction are closed in the upper wall 29.

[0072] Heater 32 is located at the bottom of the storage tank 28 in the -Z direction. Heater 32 generates heat when powered by a power source (not shown). The power source (not shown) is controlled by control unit 64. Figure 2The process is implemented as follows: Water W is stored inside the storage tank 28, and heat is generated by the heater 32 to produce steam VP. The steam VP passes through the orifice 34A and opening 29A (described later) and is applied to the surface 24A. Preferably, the heating of the heater 32 is controlled by the control unit 64 to ensure that steam VP is applied to the surface 24A of the adhesive tape 24 at a temperature that does not generate a load. Specifically, it is preferable that the heating of the heater 32 is controlled by the control unit 64 in such a way that the temperature of the steam VP does not exceed 140°C.

[0073] The base plate 34 is formed as a plate with a predetermined thickness in the Z direction. The base plate 34 is located inside the storage tank 28 in the -Z direction relative to the upper wall 29. A plurality of holes 34A extending through the base plate 34 in the Z direction are provided. The size of the holes 34A is such that vapor VP can pass through.

[0074] Furthermore, in this embodiment, a baffle member (not shown) is provided that can cover at least a portion of the holes 34A formed on the base plate 34. As an example, the baffle member is provided in a slidable manner in the X direction. The sliding method of the baffle member in the X direction can be either a method performed manually by a user or an automatic method performed using a motor (not shown). By sliding the baffle member in the X direction, the number of holes 34A through which vapor VP can pass and the opening area can be changed. In other words, the amount of vapor VP applied to the surface 24A can be adjusted.

[0075] Here, if the user slides the baffle component manually in the X direction, it can also be configured such that a scale is formed on the base plate 34 along the X direction, and the baffle component is adjusted so that the edge end in the X direction is aligned with the scale according to the adhesion of foreign matter G on the surface of the medium M.

[0076] Alternatively, the structure can be configured such that, instead of sliding the baffle component in the X direction, the baffle component slides in the Y direction, thereby enabling the adjustment of the amount of vapor VP applied to the surface 24A.

[0077] The other end of the supply pipe 37 is connected to a tank (not shown). Water W is stored inside the tank (not shown).

[0078] The supply pump 38 is connected to the supply pipe 37. By activating the supply pump 38, water W is supplied to the interior of the storage tank 28 through the supply pipe 37. The operation of the supply pump 38 is controlled by the control unit 64.

[0079] A compressor 41 is connected to the pressurization pipe 39.

[0080] The compressor 41 compresses the air and sends the compressed air into the pressurization pipe 39. This pressurizes the interior of the storage tank 28. The operation of the compressor 41 is controlled by the control unit 64. In other words, by controlling the pressurization pressure in the compressor 41, the amount of vapor VP applied to the surface 24A can also be controlled.

[0081] Here, when viewing the printer 10 from the X direction, the area in the Y direction on the surface 24A where vapor VP is applied is designated as the first region S1.

[0082] As an example, the first region S1 is the region opposite to the portion extending from the orifice 34A at one end in the +Y direction to the orifice 34A at the other end in the -Y direction. In other words, the first region S1 is the region capable of imparting vapor VP.

[0083] like Figure 2 As shown, as an example, the surface detection unit 42 is constructed from a CCD (charge-coupled device) linear array camera (not shown). The surface detection unit 42 detects the surface 24A (after the medium M has been stripped) Figure 3 The status of ) is detected.

[0084] As an example, as described below, the surface detection unit 42 acquires and parses image data of the surface 24A, thereby detecting foreign matter G (G) attached to the surface 24A. Figure 3 The detection is performed. Furthermore, the image data analysis can be performed either by the control unit 64 or by another control unit located inside the surface detection unit 42.

[0085] Foreign matter G refers to a substance that is different from surface 24A and the adhesive applied to surface 24A, such as a substance containing a portion of medium M, dust, or ink K.

[0086] The image data obtained in the surface detection unit 42 is subjected to various filtering processes in the control unit 64, such as shading correction, noise removal, and contrast enhancement. Furthermore, the surface detection unit 42 detects the presence or absence of foreign matter G on the surface 24A based on the filtered image data.

[0087] Furthermore, the absence of foreign objects G is not limited to the case where the number of foreign objects G is 0, but also includes the case where the number of foreign objects G per unit area is less than the allowable number.

[0088] On the other hand, the case of having foreign objects G refers to the case where the number of foreign objects G per unit area is more than the allowable number, which is predetermined.

[0089] In addition, regarding the case of foreign objects G, multiple thresholds for the permissible number of foreign objects G can be preset, and the state of having foreign objects G can be distinguished through multiple stages.

[0090] like Figure 1 As shown, when viewed from the X direction, the area cleaned by the cleaning unit 46 (described later) is designated as the second region S2. Furthermore, the region extending from one end of the first region S1 in the +Y direction to one end of the second region S2 in the -Y direction is designated as the target region S. In other words, the target region S is the region that includes both the first region S1 and the second region S2.

[0091] The cooling unit 44 is located in the -Z direction relative to the surface 24A. When viewed from the X direction, the cooling unit 44 is capable of cooling a portion of the target area S. As an example, the cooling unit 44 is configured to include an air cooler (not shown) and a plurality of nozzles. The air cooler (not shown) includes: a compressor unit for supplying air, a vortex generating unit for generating vortices through the supplied air, and a regulating valve for adjusting the amount of cold air flowing from the vortex generating unit toward the surface 24A.

[0092] Specifically, the cooling unit 44 cools a portion of the target area S between the first area S1 and the second area S2. In other words, the cooling unit 44 can cool the area on the surface 24A where vapor VP has been applied and before it is cleaned by the cleaning unit 46. Furthermore, the cooling unit 44 can cool until the vapor VP present around the surface 24A condenses.

[0093] like Figure 3 as well as Figure 4 As shown, the cleaning unit 46 cleans the surface 24A that has been supplied with steam VP by the steam supply unit 26. Specifically, as an example, the cleaning unit 46 includes a recovery tank 48, a dividing wall 49, a longitudinal wall 51, a rubber scraper 54, a cleaning brush 56, and an air nozzle 58. Furthermore, the cleaning unit 46 is equipped with a movable part 62 (described later) Figure 2 The movement in the Z direction is supported.

[0094] The recycling tank 48 is a box-shaped component that opens in the +Z direction. The recycling tank 48 has a bottom wall 48A, a front wall 48B, a rear wall 48C, and a side wall 48D.

[0095] The bottom wall 48A extends along the XY plane and in the X direction. The front wall 48B extends towards the +Z direction at the +Y end of the bottom wall 48A. The rear wall 48C extends towards the +Z direction at the -Y end of the bottom wall 48A. The side wall 48D extends towards the +Z direction at both ends of the bottom wall 48A in the X direction. The chamber 47 is formed by the bottom wall 48A, the front wall 48B, the rear wall 48C, and the side wall 48D. As an example, no cleaning fluid is stored in the chamber 47.

[0096] A dividing wall 49 is provided on the bottom wall 48A. The dividing wall 49 is located in the -Y and -Z directions relative to the cleaning brush 52 (described later). When viewed from the X direction, the dividing wall 49 divides the bottom of the chamber 47 into two spaces 52A and 52B. Space 52A is located in the +Y direction relative to the dividing wall 49. Space 52B is located in the -Y direction relative to the dividing wall 49.

[0097] The longitudinal wall portion 51 is provided on the rear wall 48C and is located in the -Y direction relative to the rear wall 48C. A space portion 53 is formed between the rear wall 48C and the longitudinal wall portion 51.

[0098] The two ends of the rubber scraper 54 in the X direction are supported on a bracket (not shown) and stand upright in the Z direction within the space 53. The +Z end of the rubber scraper 54 protrudes in the +Z direction compared to the longitudinal wall portion 51 and contacts the surface 24A. An inclined surface 55 is formed on the +Z end of the rubber scraper 54. The inclined surface 55 is inclined in such a way that the +Y end is located closer to the -Z direction than the -Y end. The rubber scraper 54 scrapes away moisture and other substances remaining on the surface 24A after it has been cleaned by the cleaning brush 56.

[0099] The cleaning brush 56 is a component for cleaning surface 24A. Specifically, the cleaning brush 56 has a cylindrical shaft portion 56A and brush portions 56B extending radially from the outer peripheral surface of the shaft portion 57, excluding the two ends in the axial direction. The shaft portion 56A extends in the X direction. Furthermore, the shaft portion 56A is rotatably supported by the sidewall 48D, and thus rotatably supported by the recovery tank 48.

[0100] The brush 56B contacts the surface 24A of the lower surface 25C when the cleaning section 46 is raised in the +Z direction. Furthermore, the cleaning brush 56 rotates using a motor (not shown), thereby cleaning water droplets D and foreign objects G remaining on the surface 24A. The water droplets D and foreign objects G removed by the cleaning brush 56 are collected into a portion of the collection tank 48.

[0101] Furthermore, at the contact position where the cleaning brush 56 contacts the lower surface portion 25C, the brush portion 56B is rotated in a direction opposite to the moving direction of the adhesive tape 24. The rotation direction of the cleaning brush 56 is set to the +B direction.

[0102] As an example, an air nozzle 58 is mounted on the rear wall 48C. The air nozzle 58 sprays air supplied by a compressor (not shown) toward the cleaning brush 56. Specifically, the air nozzle 58 sprays air from a position in the +Z direction of the rear wall 48C toward a position in the +Y and -Z directions. The air sprayed from the air nozzle 58 is blown toward the cleaning brush 56 in a direction approximately tangential to it and in the opposite direction to the +B direction of the cleaning brush 56. As a result, foreign matter G and the like adhering to the cleaning brush 56 are removed from the cleaning brush 56. The foreign matter G and the like removed from the cleaning brush 56 are recovered by falling to the bottom of the recovery tank 48.

[0103] like Figure 2 As shown, the lifting action of the moving part 62 is controlled by the control part 64, which will be described later. The moving part 62 is configured as a lifting platform including a motor (not shown) and a cam. In the maintenance mode of the printer 10, the moving part 62 moves the cleaning part 46 relative to the surface 24A ( Figure 4 The cleaning section 46 descends in the -Z direction. Furthermore, in recording mode of the printer 10, the moving part 62 causes the cleaning section 46 to rise relative to the surface 24A in the +Z direction. Additionally, in maintenance mode, the cleaning section 46 can be kept at its current height without descending.

[0104] The control unit 64 includes a CPU (Central Processing Unit) 66 that functions as a computer, a memory 68, and a storage device not shown. Furthermore, the control unit 64 controls various actions in each section of the printer 10, such as conveying, recording, discharging, and cleaning, by executing the program PR.

[0105] The memory 68 stores various data, including the program PR executed by the CPU 66. Within a portion of the memory 68, the program PR can be expanded.

[0106] The control unit 64 is capable of controlling the operation of the steam supply unit 26. Specifically, the control unit 64 can control the operation of the surface 24A detected by the surface detection unit 42. Figure 4The control unit 64 controls the operation of the steam supply unit 26 by adjusting the state of the surface detection unit 42. For example, if the surface detection unit 42 detects no foreign object G, the control unit 64 keeps the steam supply unit 26 in a stopped state. If the surface detection unit 42 detects the presence of a foreign object G, the control unit 64 activates the steam supply unit 26. Specifically, this is achieved by adjusting the state of the heater 32 (…). Figure 3 The power is supplied to the heater 32, thereby causing the heater 32 to heat up.

[0107] In addition, the control unit 64 can also perform the following control: by activating the vapor supply unit 26, a small amount of vapor VP is supplied to the surface 24A when there is no foreign matter G, and a large amount of vapor VP is supplied to the surface 24A when there is foreign matter G.

[0108] Next, refer to Figures 1 to 4 The functions of the printer 10 and the conveyor unit 20 will be explained. Additionally, descriptions of individual drawing numbers are omitted.

[0109] Medium M is conveyed in the conveying unit 20. Recording is performed on the conveyed medium M by the recording unit 16. If a foreign object G is detected in the surface detection unit 42, the operation of the steam supply unit 26 is controlled by the control unit 64, thereby causing the heater 32 to heat up. The generated steam VP is supplied to the surface 24A of the medium M that has been peeled off. The amount of water W heated by the heater 32 is adjusted by the control unit 64.

[0110] In the portion of surface 24A where vapor VP is applied, the foreign object G is covered by vapor VP. Furthermore, the portion where vapor VP is applied moves to a position opposite to the cooling section 44 as the adhesive tape 24 moves.

[0111] The vapor VP present around surface 24A and the moisture in the air are cooled by the cooling section 44. As a result, the vapor VP becomes condensed, and the foreign matter G is covered by water droplets D.

[0112] On surface 24A, the foreign object G floats relative to surface 24A due to the effects of vapor VP entering the gap between the foreign object G and surface 24A, water droplets D generated from vapor VP covering the foreign object G, and the thermal energy of vapor VP being imparted to the foreign object G.

[0113] Foreign matter G and water droplets D adhering to surface 24A move to a position opposite to the cleaning section 36 as the adhesive tape 24 moves. Furthermore, the foreign matter G and water droplets D adhering to surface 24A are removed from surface 24A by the cleaning brush 56 and rubber scraper 54 of the cleaning section 36. By employing this method, surface 24A is cleaned.

[0114] Foreign matter G and water droplets D adhering to the cleaning brush 56 are removed by air blown from the air nozzle 58 during the rotation of the cleaning brush 56. The removed foreign matter G and water droplets D are recycled into the recycling tank 48.

[0115] As explained above, according to the conveying unit 20, foreign matter G adhering to the surface 24A of the adhesive tape 24 becomes easier to float off the surface 24A due to the vapor VP. That is, since vapor VP is used instead of liquid to remove the foreign matter G adhering to the surface 24A of the adhesive tape 24, the dispersion of liquid containing foreign matter G around the conveying unit 20, which would occur when using cleaning fluid (liquid), is suppressed, creating a state where foreign matter G can be easily removed. Thus, the situation where the area around the conveying unit 20 is contaminated by the dispersed liquid containing foreign matter G can be suppressed. Furthermore, it is also considered that the thermal motion of the molecules in the foreign matter G will intensify due to the thermal motion of the vapor VP molecules, thereby weakening the intermolecular bonding of the substances contained in the foreign matter G. That is, it can be considered that, in the case of using vapor VP, in addition to pressure, thermal energy also contributes to improving the foreign matter removal performance. Therefore, even while ensuring the same foreign matter removal performance, the pressure required when using vapor VP is lower than the pressure required when using cleaning fluid. Therefore, when steam VP is applied to the surface 24A by the steam application section 26, the load on the adhesive tape 24 will be smaller compared to when high-pressure cleaning fluid is sprayed onto the surface 24A.

[0116] Furthermore, as described above, the thermal energy of the vapor VP applied to the adhesive tape 24 by the vapor application section 26 weakens the intermolecular bonding forces of the substances contained in the foreign matter G. Therefore, the vapor VP easily penetrates between the foreign matter G and the surface 24A, making the foreign matter G more likely to float relative to the surface 24A. In other words, the foreign matter G becomes easier to remove. Thus, when the cleaning section 36 cleans the surface 24A after the vapor VP is applied, the amount of foreign matter G removed by the cleaning section 36 increases, thereby improving the removal performance of the foreign matter G.

[0117] Thus, according to the conveying unit 20, it is possible to both suppress the load acting on the adhesive tape 24 and improve the removal performance of foreign matter G on the surface 24A of the adhesive tape 24.

[0118] According to the conveying unit 20, since at least a portion of the target area S is cooled by the cooling unit 44, moisture in the air and a portion of the moisture contained in the vapor VP are condensed in the target area S. As a result, since the foreign matter G is easily removed by supplying moisture to the target area S and covering it, the removal performance of the foreign matter G can be improved.

[0119] According to the conveying unit 20, when the surface 24A is in a state where a large amount of foreign matter G is attached, the control unit 64 can perform control by increasing at least one of the heating amount of the vapor VP supplied by the vapor supply unit 26 and the vapor quantity of the vapor VP. By increasing the heating amount in the vapor supply unit 26, the temperature of the vapor VP is raised, and the kinetic energy of the vapor VP molecules is increased. Through the intense thermal motion of the molecules of the higher-temperature vapor VP, the thermal motion of the molecules of the substance contained in the lower-temperature foreign matter G becomes more intense, thereby weakening the intermolecular bonding force of the substance contained in the foreign matter G. In other words, the foreign matter G softens due to the increased temperature. Furthermore, by increasing the supply amount of vapor VP supplied to the adhesive tape 24, the foreign matter G becomes easier to dilute with the vapor VP. Therefore, the removal performance of the foreign matter G can be further improved.

[0120] According to the printer 10, by performing the same function as the transport unit 20, it is possible to create a state in which the foreign matter G can be easily removed while suppressing the scattering of liquid containing the foreign matter G. In other words, it is possible to suppress the situation where the inside of the printer 10 is contaminated by the scattering of liquid containing the foreign matter G.

[0121] Implementation Method 2

[0122] Hereinafter, the transport unit 70 of Embodiment 2 will be described in detail. Furthermore, for structures identical to the printer 10 and transport unit 20 of Embodiment 1, the same reference numerals will be used and their descriptions will be omitted.

[0123] like Figure 5 As shown, the conveyor unit 70 replaces the conveyor unit 20 in the printer 10. Figure 1 The printer 10 is configured to be the same as that in Embodiment 1, except for the transport section 70.

[0124] As an example, the conveying unit 70 includes a belt unit 21, a steam supply unit 26, and a surface inspection unit 42. Figure 2 ), cooling unit 74, cleaning unit 76, moving unit 62 and control unit 64 ( Figure 2 The conveying unit 70 is an example of a conveying device that conveys the medium M by moving the adhesive tape 24. The conveying unit 70 is provided in the main body 12 of the device. Figure 1)superior.

[0125] As an example, the cooling section 74 is fixed to the main body 12 of the device on the inside of the adhesive tape 24. Figure 1 The cooling section 74 contacts the back surface 24B of the adhesive tape 24 from a position downstream of the vapor supply section 26 in the +R direction to a position parallel to a portion of the cleaning section 76 in the Z direction. As an example, the cooling section 74 is configured to include a Peltier element (not shown) and a power source.

[0126] By energizing the Peltier element, the heat-absorbing portion of the cooling section 74 absorbs heat from the back surface 24B of the adhesive tape 24, while the heat-dissipating portion dissipates heat. As a result, the adhesive tape 24 and the space surrounding it are cooled. As an example, the cooling section 74 can cool the second region S3 (described later) and a portion of the area between the first region S1 and the second region S3 within the target region S.

[0127] When viewed from the X direction, the area cleaned by the cleaning unit 76 is designated as the second area S3.

[0128] As an example, the cleaning unit 76 has a scraping component 78, a recycling unit 86, and an air supply unit 88.

[0129] The scraping component 78 scrapes the foreign matter G and water droplets D adhering to the surface 24A from the surface 24A.

[0130] The recycling unit 86 recycles the foreign matter G scraped off by the scraped component 78.

[0131] The air supply unit 88 supplies air to the scraping component 78 and the recovery unit 86.

[0132] like Figure 6 As shown, as an example, the scraping member 78 is a member shaped by obliquely cutting off the +Z direction end of a cuboid extending in the Z direction. The scraping member 78 has a bevel 79. The bevel 79 extends from the -Y direction end and the +Z direction end of the scraping member 78 toward the +Y direction and -Z direction position.

[0133] The scraping member 78 is provided with a collection portion 82 that is recessed from the inclined surface 79 in the -Z direction, and a guide groove 84 that extends from the collection portion 82 in the -Z direction.

[0134] The collection part 82 has a bottom surface 82A and two side surfaces 82B.

[0135] The bottom surface 82A is an inclined surface extending from the end of the scraping member 78 in the -Y direction and the end in the +Z direction toward the positions in the +Y and -Z directions. The inclination angle of the bottom surface 82A relative to the XY plane is greater than the inclination angle of the inclined surface 79 relative to the XY plane. Alternatively, the bottom surface 82A may be configured as a curved surface.

[0136] The shape of the base 82A is a trapezoid with the upper base in the +Y direction and the lower base in the -Y direction when viewed along the -Z direction. In other words, the width in the X direction at the +Y end of the base 82A is narrower than the width in the X direction at the -Y end of the base 82A.

[0137] An opening 83 that opens in the Z direction is formed at the end of the bottom surface 82A in the +Y direction.

[0138] Two side faces 82B rise vertically from both ends of the base 82A in the X direction towards the +Z direction. When viewed along the -Z direction, the two side faces 82B are located at the hypotenuse of the trapezoid of the base 82A. The height of the two side faces 82B in the +Z direction increases towards the +Y direction.

[0139] Thus, the shape of the collecting section 82 is an inclined shape that slopes downwards towards the -Z direction as it moves towards the +Y direction, and its depth in the Z direction increases towards the +Y direction. Furthermore, the +Y end of the collecting section 82 is open in the +Y direction.

[0140] The guide groove 84 extends from the opening 83 in the -Z direction. The guide groove 84 extends from the opening 83 to the lower end of the scraping member 78 in the -Z direction. Furthermore, the guide groove 84 is also opened in the +Y direction. Multiple guide grooves 84 are spaced apart in the X direction. The guide grooves 84 are sized to allow foreign matter G and water droplets D to pass through. The multiple guide grooves 84 respectively guide the foreign matter G to the recovery section 86 described later. Figure 5 An example of a guide section in ).

[0141] like Figure 5 As shown, as an example, the recycling section 86 has a tray 87 that opens in the +Z direction.

[0142] The tray 87 is located in the -Z direction relative to the scraping member 78. When viewed in the +Z direction, the tray 87 is sized to cover the scraping member 78. Thus, foreign matter G and water droplets D that have flowed from the bottom surface 82A along the side or guide groove 84 of the scraping member 78 in the +Y direction fall off the scraping member 78 and are collected into the tray 87.

[0143] Air supply section 88 is located in the main body section 12 of the device. Figure 5The air supply unit 88 is positioned in the -Z direction relative to the lower surface portion 25C. The air supply unit 88 is configured to include an air nozzle (not shown) and a compressor. The air supply unit 88 directs air supplied by the compressor toward the scraping member 78. Specifically, the air supply unit 88 directs air toward a plurality of guide slots 84. In other words, at least a portion of the scraping member 78 is configured to be supplied with air between the air supply unit 88 and the recovery unit 86.

[0144] The function of the conveying unit 70 in Embodiment 2 will be explained. Additionally, regarding the connection with the conveying unit 20 ( Figure 1 The same structure and function are used, but the explanation is omitted.

[0145] like Figure 5 As shown, the portion imbued with vapor VP is moved to a position opposite the cooling section 74 as the adhesive tape 24 moves. Additionally, a portion of the foreign matter G is covered by water droplets D due to the effect of the vapor VP. The vapor VP present around the surface 24A, along with moisture in the air, is cooled by the cooling section 74. Thus, the vapor VP becomes condensed, and the foreign matter G is covered by water droplets D.

[0146] Foreign matter G covered by water droplet D, and foreign matter G not covered by water droplet D, are removed from surface 24A by scraping by scraping member 78. The scraped foreign matter G and water droplet D flow down along bottom surface 82A in the +Y and -Z directions due to their own weight. At this time, foreign matter G and water droplet D are guided by collecting part 82, so they will not flow outward from scraping member 78 in the X direction. Moreover, foreign matter G and water droplet D flow down in guiding groove 84 due to their own weight and the pressure of air supply from air supply part 88, and are collected by recycling part 86.

[0147] As explained above, thanks to the conveying unit 70, condensation is unlikely to occur between the first region S1 and the second region S3, but will instead occur within the second region S3. Furthermore, the moisture condensed in the second region S3 is recovered by the cleaning unit 76. This suppresses the possibility of water droplets D falling from the surface 24A between the first region S1 and the second region S3. In addition, the hardening of the adhesive is promoted, thereby improving the durability of the adhesive when the adhesive tape 24 is scraped by the scraping member 78. This effect is also effective at least when the adhesive tape 24 is scraped by the cleaning brush 56 in Embodiment 1. That is, in the case of a structure including the cleaning member contacting the surface 24A of the adhesive tape 24, the surface 24A of the adhesive tape 24 can be cleaned while improving the durability of the adhesive.

[0148] According to the conveying unit 70, the foreign matter G scraped off by the scraping member 78 flows down along the guide groove 84 and is recycled into the recycling unit 86. As a result, since the foreign matter G is unlikely to remain between the scraping member 78 and the surface 24A, the reduction in cleaning performance performed by the cleaning unit 76 can be suppressed.

[0149] According to the conveying unit 70, the foreign matter G attached to the scraping member 78 is moved toward the recovery unit 86 by the pressure of the air supplied by the air supply unit 88 and is recovered into the recovery unit 86. As a result, the situation where the foreign matter G attached to the scraping member 78 re-attaches to the surface 24A can be suppressed.

[0150] Variations of Implementation Method 2

[0151] like Figure 7 As shown, the cleaning unit 92 is the cleaning unit 76 of embodiment 2. Figure 6 (This refers to a variation of the previous example.) Furthermore, for structures identical to the cleaning section 76, the same symbols are used and the drawing numbers are omitted.

[0152] As an example, the cleaning unit 92 has a scraping component 94, a recycling unit 86, and a suction unit 96.

[0153] The scraping member 94 has a structure in which multiple guide paths 95 are formed in the scraping member 78 by closing the +Y direction end of the guide groove 84. The guide paths 95 are in the shape of a rectangular tube extending in the Z direction. Both ends of the guide paths 95 in the Z direction are open.

[0154] The suction unit 96 is configured to include a fan 98 and a motor (not shown) that rotates the fan 98. The suction unit 96 utilizes the negative pressure generated inside the guide path 95 by the rotation of the fan 98 to suction foreign objects G and water droplets D from the guide path 95 toward the collection unit 86. Thus, foreign objects G and water droplets D within the guide path 95 can be forcibly moved toward the collection unit 86 by suction rather than airflow.

[0155] Implementation Method 3

[0156] Hereinafter, the transport unit 100 of Embodiment 3 will be described in detail. In addition, the same symbols are used for the same structures as those in Embodiments 1 and 2, and their descriptions are omitted.

[0157] like Figure 8 as well as Figure 9 As shown, the conveyor unit 100 replaces the conveyor unit 70 in the printer 10. Figure 5 The printer 10 is configured such that, except for the transport section 70, its structure is the same as that in embodiments 1 and 2.

[0158] As an example, the conveying unit 100 includes a belt unit 21, a steam supply unit 26, and a surface inspection unit 42. Figure 9 ), cooling unit 74, cleaning unit 76, moving unit 62 and control unit 64 ( Figure 9 The device includes an airflow generating unit 102 and a heating unit 104. The conveying unit 100 is an example of a conveying device that conveys the medium M by moving the adhesive tape 24. The conveying unit 100 is provided in the main body 12 of the device. Figure 1 )superior.

[0159] In Embodiment 3, the surface detection unit 42 is configured to detect the amount of water droplets D adhering to the surface 24A through image analysis. The amount of water droplets D obtained by the surface detection unit 42 is not the actual amount, but an assumed amount that can be compared relative to different states of the surface 24A.

[0160] The amount of water droplets D obtained in the surface detection unit 42 is correlated in the control unit 64 with the amount of steam VP supplied to the adhesive tape 24 by the steam supply unit 26. As an example, a higher amount of water droplets D obtained in the surface detection unit 42 indicates a higher amount of steam VP supplied. Conversely, a lower amount of water droplets D obtained in the surface detection unit 42 indicates a lower amount of steam VP supplied.

[0161] Furthermore, the classification that establishes a relationship between the amount of water droplets D and the amount of steam VP supplied is not limited to the two-stage classification described above, but can also be set to a classification with three or more stages.

[0162] like Figure 8 As shown, the airflow generating section 102 is located in the Z direction on the side opposite to the vapor supply section 26 of the adhesive tape 24. The airflow generating section 102 is configured to generate airflow toward the back surface 24B of the adhesive tape 24 opposite to the surface 24A.

[0163] Specifically, as an example, the airflow generating unit 102 is configured to include a plurality of nozzles (not shown) arranged side-by-side in the X and Y directions, and a fan (not shown) that directs airflow to the plurality of nozzles. The plurality of nozzles open toward the rear surface 24B. In this manner, the airflow generating unit 102 is capable of generating an airflow F relative to the entire rear surface 24B in the X direction. Figure 10 ).

[0164] The heating element 104 is located in the Z direction on the side opposite to the vapor supply element 26 relative to the adhesive tape 24. The heating element 104 is in contact with the back surface 24B. In other words, the heating element 104 is located in the Z direction between the adhesive tape 24 and the airflow generating element 102.

[0165] Specifically, the heating element 104 is configured as a plate-shaped heater having a predetermined thickness in the Z direction and extending in the X direction. The heating element 104 is configured to reach the area reached by the airflow F in the back surface 24B. Figure 10 Heating is performed.

[0166] like Figure 9 As shown, in Embodiment 3, the control unit 64 adjusts the amount of airflow F generated in the airflow generating unit 102 based on the amount of steam VP generated from the steam supply unit 26. Furthermore, the control unit 64 controls the heating temperature in the heating unit 104 based on the amount of airflow F generated.

[0167] Specifically, the control unit 64 predicts the amount of vapor VP generated based on the assumed amount of water droplets D obtained in the surface detection unit 42. Furthermore, the control unit 64 adjusts the amount of airflow F generated according to the amount of vapor VP generated. For example, if the amount of vapor VP generated is high, the amount of airflow F generated is increased. Conversely, if the amount of vapor VP generated is low, the amount of airflow F generated is decreased.

[0168] Furthermore, as an example, the control unit 64 enables heating performed by the heating unit 104 when the amount of airflow F generated is relatively large. Conversely, when the amount of airflow F generated is relatively small, the heating performed by the heating unit 104 is stopped.

[0169] Thus, the control unit 64 of Embodiment 3 is configured to control the airflow generating unit 102 and the heating unit 104 based on the detection information in the surface detection unit 42.

[0170] The function of the conveying unit 100 in Embodiment 3 will be explained. Furthermore, descriptions of the same structure and function as the conveying units 20 and 70 described previously will be omitted.

[0171] like Figure 9 as well as Figure 10 As shown, the portion of surface 24A to which vapor VP is applied is detected by surface detection unit 42. Furthermore, the supply amount of vapor VP is assumed in control unit 64.

[0172] As an example, when the amount of steam VP generated is high, the control unit 64 increases the amount of airflow F generated in the airflow generation unit 102. As a result, the airflow F flowing in the -Z direction suppresses the rise of steam VP flowing in the +Z direction. In other words, the diffusion of steam VP is suppressed.

[0173] Furthermore, when the amount of airflow F generated is large, the control unit 64 performs heating by the heating unit 104. As a result, since a portion of the vapor VP whose temperature has decreased due to the airflow F becomes a temperature at which condensation is unlikely to occur, condensation towards the back surface 24B is suppressed.

[0174] As explained above, according to the conveying unit 100, when a portion of the vapor VP supplied from the vapor supply unit 26 to the surface 24A intends to flow towards the back surface 24B via the outer side compared to the end of the adhesive tape 24, the airflow F generated in the airflow generating unit 102 pushes a portion of the vapor VP back to the area on the surface 24A side. Here, when the amount of vapor VP generated from the vapor supply unit 26 is large, since it is possible to implement control to increase the amount of airflow F generated in the airflow generating unit 102, it is possible to suppress the diffusion of a portion of the vapor VP to other parts via the area on the back surface 24B side.

[0175] According to the conveying unit 100, even if a structure is prone to condensation due to the temperature drop caused by the airflow F, the arrival area can be heated by the heating unit 104, thereby suppressing the condensation on the back surface 24B.

[0176] Implementation Method 4

[0177] Hereinafter, the transport unit 110 of Embodiment 4 will be described in detail. In addition, the same symbols are used for the same structure as those for the printer 10 and transport units 20, 70 and 100 in Embodiments 1, 2 and 3, and their descriptions are omitted.

[0178] like Figure 11 As shown, the conveyor unit 110 replaces the conveyor unit 100 in the printer 10. Figure 9 The printer 10 is configured such that, except for the transport section 100, its structure is the same as that in embodiments 1, 2, and 3.

[0179] As an example, the conveyor unit 110 includes a belt unit 21 ( Figure 8 The unit includes a steam supply section 26, a speed measuring section 112, a cooling section 74, a cleaning section 76, a moving section 62, a control section 64, an airflow generating section 102, and a heating section 104. The conveying section 110 is configured to convey adhesive tape 24 (… Figure 8 An example of a conveying device that moves to convey medium M. The conveying unit 110 is provided in the main body 12 of the device. Figure 1 )superior.

[0180] As an example, the speed measuring unit 112 is configured to include an encoder (not shown) for detecting the amount of movement of the adhesive tape 24. The encoder could also be, for example, an optical or magnetic encoder for detecting the movement of the driven roller 23. Figure 1 A rotary encoder that detects the amount of rotation of the adhesive tape 24. In addition, the speed measuring unit 112 can measure the average speed of the tape movement per unit time, which is the moving speed of the adhesive tape 24.

[0181] The control unit 64 controls the operation of the steam supply unit 26 based on the moving speed of the adhesive tape 24 obtained in the speed measurement unit 112.

[0182] Specifically, the control unit 64 is configured such that, when the moving speed of the adhesive tape 24 is a set speed V1 [m / s], the heater 32 ( Figure 8 The heater 32 heats up by heating the water W to a set temperature T1. This causes the steam VP to reach a predetermined temperature. Furthermore, the control unit 64 is configured such that, when the adhesive tape 24 moves at a set speed V1 (m / s), a baffle member (not shown) slides in the X direction such that the number (or opening area) of the holes 34A through which steam VP can pass is a set number n1 (or set area S1). This allows a predetermined amount of steam VP to be obtained.

[0183] Furthermore, the control unit 64 is configured such that, when the moving speed of the adhesive tape 24 is higher than the set speed V1, the heater 32 is heated to a temperature T2 [K] higher than the normal set temperature T1 [K]. This results in a steam VP with a higher temperature than predetermined. Furthermore, the control unit 64 is configured such that, when the moving speed of the adhesive tape 24 is higher than the set speed V1, a baffle member (not shown) slides in the X direction such that the number (or opening area) of the holes 34A through which steam VP can pass is greater than the normal set number n1 (or set area S1) by a number n2 (or a larger area S2). This results in a greater amount of steam VP than predetermined.

[0184] In addition, the diagrams for setting speed V1, setting temperature T1 and temperature T2, and setting numbers n1 and n2 (setting areas S1 and S2) are omitted.

[0185] The function of the conveying unit 110 in Embodiment 4 will be explained. Furthermore, descriptions of the same structure and function as the conveying units 20, 70, and 100 described previously will be omitted.

[0186] According to the conveying unit 110, when the moving speed of the adhesive tape 24 is higher than the set speed V1, the control unit 64 can perform control to increase at least one of the heating amount of steam VP supplied by the steam supply unit 26 and the supply amount of steam VP. Therefore, even if the time for steam VP to be supplied to the surface 24A is shortened, since at least one of steam VP at the temperature required for the removal of foreign matter G and steam VP in the amount required for the removal of foreign matter G can be supplied to the surface 24A, the reduction in the removal performance of foreign matter G can be suppressed.

[0187] Implementation Method 5

[0188] Hereinafter, the conveying unit 116 of Embodiment 5 will be described in detail. In addition, the same symbols are used for the printer 10 and the conveying units 20, 70, 100 and 110 of Embodiments 1, 2, 3 and 4, and their descriptions are omitted.

[0189] like Figure 12 As shown, the transport unit 116 replaces the transport unit 100 in the printer 10. Figure 9 The printer 10 is configured such that, except for the transport section 100, its structure is the same as that in embodiments 1, 2, 3, and 4.

[0190] As an example, the conveyor unit 116 includes a belt unit 21 ( Figure 8 The unit includes a steam supply section 26, a cooling section 74, a cleaning section 76, a moving section 62, a control section 64, an airflow generating section 102, and a heating section 104. The conveying section 116 is for conveying adhesive tape 24 (… Figure 8 An example of a conveying device that moves to convey medium M. The conveying unit 116 is provided in the main body 12 of the device. Figure 1 )superior.

[0191] The control unit 64 controls the operation of the vapor supply unit 26 based on the duty cycle of the image recorded on the medium M.

[0192] Furthermore, the duty cycle refers to the value expressed as the average ejection amount per unit area when the recording unit 16 ejects ink K to the medium M, with the maximum value of 100%. The duty cycle value is obtained by the control unit 64 parsing the recording data used in the recording of the medium M.

[0193] Specifically, the control unit 64 is configured such that, when the duty cycle in the recording of the medium M is greater than a preset threshold, the heater 32 ( Figure 8The heater 32 heats the water W to a temperature T2 [K] higher than the usual set temperature T1 [K]. This results in steam VP at a higher temperature than predetermined. Furthermore, the control unit 64 is configured such that, when the duty cycle in the recording of the medium M is greater than a preset threshold, the baffle member (not shown) slides in the X direction such that the number (or opening area) of the holes 34A through which steam VP can pass is greater than the usual set number n1 (or set area S1) by a number n2 (or a larger area S2). This results in more steam VP than predetermined. Additionally, the control unit 64 is configured such that, when the duty cycle in the recording of the medium M is less than a preset threshold, the heater 32 heats the water W heated by the heater 32 to a temperature T0 [K] lower than the usual set temperature T1 [K]. This results in steam VP at a lower temperature than predetermined. Furthermore, the control unit 64 is configured such that, when the duty cycle in the recording of the medium M is less than a preset threshold, the baffle member (not shown) slides in the X direction such that the number of holes 34A through which vapor VP can pass (or the opening area) is less than the usual set number n1 (or set area S1) by a number n0 (or a smaller area S0). Thus, less vapor VP than a predetermined amount can be obtained.

[0194] In addition, the diagrams for setting temperature T1, temperature T2, T0, setting number n1, quantity n2, n0 (setting area S1, area S2, S0) are omitted.

[0195] The function of the conveying unit 116 in Embodiment 5 will be explained. Furthermore, descriptions of the same structure and function as the conveying units 20, 70, 100, and 110 described previously will be omitted.

[0196] When the image has a large fill factor, the amount of ink K used in recording may increase, which could lead to an increase in the amount of foreign matter G adhering to surface 24A.

[0197] According to the conveying unit 116, when the surface 24A is in a state where a large amount of foreign matter G is attached, the control unit 64 can perform control to increase at least one of the heating amount of steam VP supplied by the steam supply unit 26 and the supply amount of steam VP. By increasing the heating amount of steam VP in the steam supply unit 26, the foreign matter G, whose temperature has risen, will soften. Furthermore, by increasing the supply amount of steam VP in the steam supply unit 26, the foreign matter G becomes easier to dilute by the steam VP. Therefore, the removal performance of foreign matter G can be further improved.

[0198] Furthermore, even if the time for vapor VP to be applied to surface 24A is shortened, the reduction in the removal performance of foreign matter G can be suppressed because at least one of vapor VP at the temperature required for the removal of foreign matter G and vapor VP of the amount required for the removal of foreign matter G can be applied to surface 24A.

[0199] Other variations

[0200] Although the conveying units 20, 70, 100, 110, and 120 and the printer 10 involved in embodiments 1, 2, 3, 4, and 5 of the present invention are based on the cases having the structures described above, it is of course possible to implement changes, omissions, combinations, etc. of some structures without departing from the spirit of the present invention. Hereinafter, other variations will be described. The same symbols are used for the same structures and their descriptions are omitted.

[0201] Other variations 1

[0202] like Figure 13 As shown, the conveyor unit 120 replaces the conveyor unit 100 in the printer 10. Figure 9 The printer 10 is configured such that, except for the transport section 100, its structure is the same as that in embodiments 1, 2, 3, 4, and 5.

[0203] As an example, the conveyor unit 120 includes a belt unit 21 ( Figure 8 The unit includes a steam supply section 26, a cooling section 74, a cleaning section 76, a moving section 62, a control section 64, an airflow generating section 102, and a heating section 104. The conveying section 120 is used to transfer adhesive tape 24 ( Figure 8 An example of a conveying device that moves to convey medium M. The conveying unit 120 is provided in the main body 12 of the device. Figure 1 )superior.

[0204] The conveying unit 120 can also be configured to be located at the steam supply unit 26 ( Figure 2 Replace the base plate 34 in ) Figure 3 The structure is provided with an ejection section 122.

[0205] The ejector section 122 may also be provided on the steam supply section 26 and eject steam VP. As an example, the ejector section 122 may also be composed of multiple nozzles (not shown). The multiple nozzles may also be configured to allow for flow rate adjustment. That is, the amount of steam VP ejected from the ejector section 122 may also be adjustable.

[0206] For example, it can also be configured to be able to detect the surface detection unit 42 ( Figure 2 The detection information in the speed measurement unit 112 () Figure 11The amount of vapor VP ejected from the ejector section 122 is adjusted by the moving speed of the adhesive tape 24 obtained in the image and the duty cycle of the image recorded on the medium M.

[0207] Other variations 2

[0208] It can also be like Figure 14 The cleaning section 130 is configured as shown. The cleaning section 130 has a cleaning section 46 ( Figure 4 The structure of a cleaning brush 132 for cleaning the cleaning brush 56 was added to the design.

[0209] The cleaning brush 132 is capable of reciprocating in the X direction via a linear slider (not shown). The cleaning brush 132 has a semi-cylindrical base 133 and a brush 134.

[0210] The base 133 is formed into a semi-circular shape when viewed from the X direction. The base 133 is located radially outward relative to the portion of the outer periphery of the cleaning brush 56 that is closer to the center in the Z direction. The base 133 has an inner circumferential surface 133A opposite to the cleaning brush 56.

[0211] The brush 134 is composed of a plurality of bristles 134A extending from the inner circumferential surface 133A toward the center of the shaft portion 57. The length of the brush 134 is set to be able to contact the cleaning brush 56.

[0212] The cleaning brush 132 moves reciprocally in the X direction by means of the linear slider described above, which accompanies the rotation of the cleaning brush 56, thereby cleaning foreign objects G and the like attached to the cleaning brush 56.

[0213] Other variations 3

[0214] It can also be like Figure 15 As shown, the steam supply section 136 is constructed.

[0215] Steam supply section 136 in steam supply section 26 ( Figure 3 A base plate 138 is provided instead of a base plate 34. The base plate 138 is formed into a plate shape having a predetermined thickness in the Z direction. In addition, a line passing through the center of the adhesive tape 24 in the Y direction and extending in the Z direction is designated as an imaginary line C.

[0216] The base plate 138 is located inside the storage tank 28 in the -Z direction relative to the upper wall 29. Furthermore, the base plate 138 is slidable in the X direction. A plurality of holes 138A are provided in the base plate 138.

[0217] When viewed from the X direction, the plurality of holes 138A are arranged to be linearly symmetrical with respect to the imaginary line C. Furthermore, the plurality of holes 138A penetrate the base plate 138 obliquely upwards, intersecting the Z direction, with each hole facing the imaginary line C. The size of the holes 138A is such that vapor VP can pass through.

[0218] Thus, by arranging the multiple holes 138A in a structure facing the imaginary line C, the vapor VP can be concentrated toward the center of the adhesive tape 24.

[0219] Other variations 4

[0220] like Figure 16 As shown, a cover component 142 can also be provided in the printer 10 to cover a portion of the circumferential direction of the adhesive tape 24 and the vapor delivery part 26.

[0221] The cover component 142 is configured as a hollow cuboid. An inlet 143 and an outlet 144 extending through the cover component 142 in the Y direction are provided. Adhesive tape 24 enters the interior of the cover component 142 through the inlet 143 and extends to the outside of the cover component 142 through the outlet 144.

[0222] The vapor supply section 26 is disposed inside and at the bottom of the cover member 142. As an example, the bottom of the cover member 142 is closed.

[0223] Thus, by using the cover member 142 to cover the adhesive tape 24 and the area around the vapor delivery part 26, the scattering of vapor VP is suppressed, and the amount of vapor VP delivered to the adhesive tape 24 is ensured.

[0224] Examples of media M include, in addition to cloth and paper, films. The alignment method for transporting media M can be either a center-indicating method based on the central position in the X direction or a side-indicating method based on the position of one end in the X direction.

[0225] The recording unit 16 is not limited to a component that performs recording in a serial manner, such as the recording head 17, but may also be a component that performs recording in a line-head manner.

[0226] The conveyor belt is not limited to using adhesive belt 24, but can use belts that utilize various adsorption force generation mechanisms, such as electrostatic adsorption using electrostatic force generated by voltage application, vacuum suction using a compressor, and intermolecular force using multiple tiny protrusions.

[0227] As a cleaning component, a sponge roller can also be used instead of the cleaning brush 52.

[0228] The conveying unit 20 may also be a component without the cooling unit 44. Furthermore, the surface detection unit 42 may not be used in the conveying unit 20, and the steam supply unit 26 may be controlled, for example, by increasing the amount of steam VP as the usage time of the conveying unit 20 increases. Alternatively, the structure may be configured so that the amount of steam VP supplied from the steam supply unit 26 to the adhesive tape 24 is not controlled.

[0229] The conveying unit 70 may also be a unit without the scraping component 78. Furthermore, the conveying unit 70 may also be without the air supply unit 88.

[0230] The conveying unit 100 may not have a heating unit 104. Alternatively, the conveying unit 100 may be a component that has a heating unit 104 but does not have an airflow generating unit 102.

[0231] Instead of the steam supply unit 26, round boilers (drum boilers, flue tube boilers, drum-flue tube boilers, vertical boilers), water tube boilers (natural circulation water tube boilers, forced circulation water tube boilers, once-through boilers), and special boilers (cast iron boilers, waste heat boilers, special fuel boilers, special fluid boilers), etc., can also be used.

[0232] The plurality of holes 34A in the steam supply section 26 can also be configured such that the opening area or the presence or absence of the opening can be controlled individually.

[0233] Alternatively, a solution can be applied to adjust the surface energy of the adhesive tape 24A.

[0234] Alternatively, a cleaning solution containing detergent other than water (W) can be applied as steam (VP).

[0235] A component for recovering water droplets D and foreign matter G can also be provided in the cooling section 44.

[0236] The cleaning brush 56 can also rotate in the opposite direction to the rotation direction in the above embodiment.

[0237] In the cooling section 44, it is preferable that the direction of air supply for cooling is set away from the steam supply section 26.

[0238] In the direction of movement of the adhesive tape 24, air can also be supplied to the steam supply section 26 and the cooling section 44 from an upstream position compared to the steam supply section 26.

[0239] In maintenance mode, cleaning of the adhesive tape 24 can also be performed by reducing the moving speed of the adhesive tape 24 compared to the moving speed in recording mode, and by reducing the heating amount, supply amount, and generation amount of steam VP compared to the recording mode. In this configuration, in recording mode, cleaning of the adhesive tape 24 can also be performed by increasing the moving speed of the adhesive tape 24 compared to the moving speed in maintenance mode, and by increasing the heating amount, supply amount, and generation amount of steam VP compared to the maintenance mode.

[0240] Symbol Explanation

[0241] 1…factory; 2…floor section; 10…printer; 12…main unit section; 14…main unit cover;

[0242] 15…operating section; 16…recording section; 17…recording head; 18…carriage; 20…transportation section;

[0243] 21…Belt unit; 22…Drive roller; 23…Driven roller; 24…Adhesive belt;

[0244] 24A…surface; 24B…back side; 25A…upper surface; 25B…curved surface; 25C…lower surface;

[0245] 26…Steam supply section; 28…Reservoir; 29…Upper wall; 29A…Opening; 32…Heater;

[0246] 34…base plate; 34A…hole; 36…cleaning section; 37…supply pipe;

[0247] 38…supply pump; 39…pressurization pipe; 41…compressor; 42…surface inspection unit;

[0248] 44…Cooling section; 46…Cleaning section; 47…Chamber section; 48…Recovery tank; 48A…Bottom wall;

[0249] 48B…front wall; 48C…rear wall; 48D…side wall; 49…dividing wall; 51…longitudinal wall section;

[0250] 52…cleaning brush; 52A…space section; 52B…space section; 53…space section;

[0251] 54…rubber scraper; 55…sloping surface; 56…cleaning brush; 56A…shaft;

[0252] 56B…brush section; 57…shaft section; 58…air nozzle; 62…moving section; 64…control section;

[0253] 66…CPU; 68…Memory; 70…Transportation unit; 74…Cooling unit; 76…Cleaning unit;

[0254] 78… Scraping component; 79… Bevel; 82… Collection section; 82A… Bottom surface; 82B… Side surface;

[0255] 83…Opening; 84…Guide groove; 86…Recycling section; 87…Tray; 88…Air supply section;

[0256] 92… Cleaning section; 94… Scraping component; 95… Guide path; 96… Suction section; 98… Fan;

[0257] 100…Conveying section; 102…Airflow generating section; 104…Heating section; 110…Conveying section;

[0258] 112…speed measuring unit; 116…conveying unit; 120…conveying unit; 122…ejection unit;

[0259] 130… Sweeping section; 132… Sweeping brush; 133… Base; 133A… Inner circumferential surface;

[0260] 134…brush; 134A…bristle section; 136…steam applicator; 138…base plate;

[0261] 138A…hole; 142…cover component; 143…inlet; 144…outlet; C…imaginary line;

[0262] D…water droplet; F…airflow; G…foreign object; K…ink; M…medium;

[0263] S…Object region; S1…First region; S2…Second region; S3…Second region;

[0264] T1…set temperature; T2…temperature;

[0265] V1…set speed; VP…steam; W…water.

Claims

1. A delivery device characterized by, The conveying device conveys a medium by moving a conveying belt, and includes: a driving roller; a driven roller; the conveying belt has an adhesive surface by being coated with an adhesive, and is wound around the driving roller and the driven roller, and the surface supports the medium; a vapor application section that applies heated vapor to the surface of the conveying belt that is separated from the medium; a cleaning section that cleans the surface to which the vapor is applied by the vapor application section, in the surface, a region from a first region to which the vapor is applied to a second region cleaned by the cleaning section is set as an object region, the conveying device includes a cooling section that cools at least a part of the object region, the conveying device includes: a control section that controls the operation of the vapor application section; an airflow generation section that generates an airflow toward a back surface of the conveying belt opposite the surface, the control section adjusts the amount of the airflow in the airflow generation section according to the amount of the vapor from the vapor application section.

2. The conveying device according to claim 1, wherein the cooling section cools the second region.

3. The conveying device according to claim 1 or 2, wherein the control section controls the operation of the vapor application section according to the state of the surface.

4. The conveying device according to claim 1, wherein the control section controls the operation of the vapor application section according to the moving speed of the conveying belt.

5. The conveying device according to claim 1, wherein the medium is a recording medium on which an image is recorded, the control section controls the operation of the vapor application section according to the duty ratio of the image.

6. The conveying device according to claim 1, wherein the conveying device includes a heating section that heats a region reached by the airflow in the back surface, the control section controls the temperature of the heating in the heating section according to the amount of the airflow.

7. The conveying device according to claim 1, wherein the cleaning section includes: a scraping member that scrapes foreign matter attached to the surface while being in contact with the surface; a recovery section that recovers the foreign matter scraped by the scraping member, a guide section is provided on the scraping member, and guides the foreign matter to the recovery section.

8. The conveying device according to claim 7, wherein the cleaning section includes a blow section that blows toward the recovery section, at least a part of the scraping member is blown between the blow section and the recovery section.

9. A printing device characterized by comprising: includes: a conveying device that conveys a medium by moving a conveying belt; a recording section that records on the medium that is moving, the conveying device includes: a driving roller; a driven roller; The conveyor belt has an adhesive surface coated with an adhesive agent, and is wound around the driving roller and the driven roller, and the surface supports the medium; a vapor application section that applies heated vapor to the surface of the conveyor belt that is separated from the medium; a cleaning section that cleans the surface to which the vapor is applied by the vapor application section, in the surface, a region from a first region to which the vapor is applied to a second region cleaned by the cleaning section is set as a target region, the conveyor device has a cooling section that cools at least a portion of the target region, the conveyor device has: a control section that controls the operation of the vapor application section; an air flow generation section that generates an air flow toward a back surface opposite the surface in the conveyor belt, the control section adjusts the amount of the air flow in the air flow generation section according to the amount of the vapor generated from the vapor application section.

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