Printing device, information processing device, information processing method, and program

Abstract

A printing device, an information processing device, an information processing method, and a program with improved convenience are provided. [Solution] The printing device 11 comprises a printing unit 12, a conveying belt 16 having an adhesive layer 17, a heating unit 21 that heats the adhesive layer, a measuring unit 22 that measures the temperature of the adhesive layer, a detecting unit 23 that detects the adhesive strength of the adhesive layer, a driving unit 20 that drives the conveying belt, a memory unit 33 that stores a machine-learned model, and a control unit 32 that counts the amount of adhesive layer used, and the model is configured to output the lifespan of the adhesive layer as an output parameter by inputting the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of adhesive layer used as input parameters, and the control unit inputs the input parameters to the model, causing the model to output the output parameters and reporting the output parameters.

Description

[Technical Field]

[0001] The present invention relates to a printing device, an information processing device, an information processing method, and a program. [Background technology]

[0002] Patent Document 1 describes a printing device that includes a conveyor belt having an adhesive layer, a heating unit that heats the adhesive layer, and a detection unit that detects the adhesive strength of the adhesive layer. The conveyor belt conveys a medium to be attached to the adhesive layer. The adhesive strength of the adhesive layer changes when the adhesive layer is heated. The printing device adjusts the adhesive strength by heating the adhesive layer with the heating unit. The adhesive layer deteriorates over time. When the required adhesive strength is no longer obtained, the printing device notifies the user that the adhesive layer needs to be replaced. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-156156 Summary of the Invention [Problem to be solved by the invention]

[0004] In such a printing device, the need to replace the adhesive layer may be notified during printing, which may be inconvenient for the user because printing is interrupted. [Means for solving the problem]

[0005] A printing device that solves the above problem includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveying belt that has an adhesive layer and conveys a medium attached to the adhesive layer, a heating unit that heats the adhesive layer, a measuring unit that measures the temperature of the adhesive layer, a detecting unit that detects the adhesive strength of the adhesive layer, a driving unit that drives the conveying belt, a memory unit that stores a machine-learned model, and a control unit that counts the amount of usage of the adhesive layer, wherein the model is configured to output the lifespan of the adhesive layer as an output parameter by inputting the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of usage of the adhesive layer as input parameters, and the control unit inputs the input parameters to the model, causing the model to output the output parameter and reporting the output parameter.

[0006] An information processing device that solves the above problem is an information processing device that processes information related to a printing device that has a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveying belt that has an adhesive layer and conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer, and is equipped with a memory unit that stores a machine-learned model and a control unit that counts the amount of usage of the adhesive layer, and the model is configured to output the life of the adhesive layer as an output parameter by inputting the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of usage of the adhesive layer as input parameters, and the control unit inputs the input parameters to the model, causing the model to output the output parameters and reporting the output parameters.

[0007] An information processing method for solving the above problem is an information processing method in which a computer processes information about a printing device that includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveying belt that has an adhesive layer and conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer. The information processing method includes the computer inputting the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the usage amount of the adhesive layer as input parameters into a machine-learned model that is configured to output the life of the adhesive layer as an output parameter, thereby causing the model to output the output parameters, and reporting the output parameters.

[0008] A program that solves the above problem causes a computer to process information related to a printing device that includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveying belt that has an adhesive layer and conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer.The program may cause the computer to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the usage amount of the adhesive layer as input parameters into a machine-learned model that is configured to output the life of the adhesive layer as an output parameter, and to output the output parameters from the model, and to notify the output parameters. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of a printing device. [Figure 2] FIG. 2 is a block diagram of the information processing device. [Figure 3] FIG. 3 is a graph showing the life of the adhesive layer. [Figure 4] FIG. 4 is a flowchart showing an example of the notification process. [Figure 5] FIG. 5 is a diagram illustrating an example of a data set. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of a printing device including an information processing device will be described below with reference to the drawings. The printing device is, for example, an inkjet printer that prints images such as text and photographs by ejecting ink, which is an example of a liquid, onto a medium such as paper or fabric.

[0011] <Printing device> 1, the printing device 11 includes a printing unit 12. The printing unit 12 is configured to print an image on a medium 99. The printing unit 12 prints the image on the medium 99 by ejecting a liquid onto the medium 99. The printing unit 12 includes a head that ejects the liquid.

[0012] The printing device 11 includes a transport unit 13. The transport unit 13 is configured to transport a medium 99. The transport unit 13 transports the medium 99 so that the medium 99 passes through a position facing the printing unit 12. The transport unit 13 may transport a medium 99 supplied from another device, or may transport a medium 99 set in the printing device 11.

[0013] The transport unit 13 has one or more pulleys. In one example, the transport unit 13 has a first pulley 14 and a second pulley 15. In the transport direction in which the medium 99 is transported, the first pulley 14 is located, for example, downstream of the printing unit 12. In the transport direction, the second pulley 15 is located, for example, upstream of the printing unit 12.

[0014] The conveying unit 13 has a conveying belt 16. The conveying belt 16 is wound around pulleys. More specifically, the conveying belt 16 is wound around a first pulley 14 and a second pulley 15. The conveying belt 16 rotates together with the first pulley 14 and the second pulley 15.

[0015] The conveyor belt 16 has an adhesive layer 17. The adhesive layer 17 is formed on the surface of the conveyor belt 16. The adhesive layer 17 is formed by applying an adhesive to the surface of the conveyor belt 16. The adhesive is, for example, glue. The conveyor belt 16 holds the medium 99 by the adhesive layer 17. The conveyor belt 16 conveys the medium 99 by rotating while holding the medium 99. The conveyor belt 16 conveys the medium 99 attached to the adhesive layer 17.

[0016] The conveyor belt 16 may receive the liquid by flushing. That is, the printing unit 12 may be configured to flush the conveyor belt 16. Flushing is an operation in which the printing unit 12 ejects liquid that is unrelated to printing. Flushing is a maintenance operation for maintaining the ejection performance of the printing unit 12. Flushing prevents clogging of the printing unit 12 with liquid.

[0017] The transport unit 13 has a release roller 18. The release roller 18 is configured to release the medium 99 held by the transport belt 16. The release roller 18 releases the medium 99 from the transport belt 16 by peeling the medium 99 off the transport belt 16. The medium 99 is wound around the release roller 18. The release roller 18 may be a roller that is driven to rotate, or a roller that is driven to rotate. The release roller 18 peels the printed medium 99 off the transport belt 16 by guiding the medium 99 downstream. The release roller 18 guides the medium 99 downstream so as to pull it up from the transport belt 16. The medium 99 may be taken up by the printing device 11, or may be transported to a device separate from the printing device 11.

[0018] The printing device 11 includes a pressing unit 19. The pressing unit 19 is configured to press the medium 99 against the conveyor belt 16. In one example, the pressing unit 19 is located directly above the second pulley 15. The pressing unit 19 presses the medium 99 against the portion of the conveyor belt 16 that is wound around the second pulley 15. The pressing unit 19 presses the medium 99 against the conveyor belt 16, thereby adhering the medium 99 to the adhesive layer 17. This causes the medium 99 to be attached to the adhesive layer 17. As a result, the conveyor belt 16 holds the medium 99. The pressing unit 19 is, for example, a roller. The pressing unit 19 may be a rod or any other configuration that applies a load to the medium 99. The pressing unit 19 presses the medium 99 against the conveyor belt 16 with a predetermined pressure.

[0019] The printing device 11 includes a drive unit 20. The drive unit 20 is configured to drive the conveyor belt 16. The drive unit 20 drives the first pulley 14 or the second pulley 15 to drive the conveyor belt 16. In one example, the drive unit 20 is connected to the first pulley 14. The drive unit 20 rotates the first pulley 14. The drive unit 20 may also be connected to the second pulley 15. The drive unit 20 is, for example, a motor.

[0020] The printing device 11 includes a heating unit 21. The heating unit 21 is configured to heat the adhesive layer 17. The adhesive strength of the adhesive layer 17 changes depending on the temperature of the adhesive layer 17. Specifically, as the temperature of the adhesive layer 17 increases, the adhesive strength increases. By heating the adhesive layer 17 with the heating unit 21, the adhesive layer 17 can exert the adhesive strength necessary to hold the medium 99. The heating unit 21 heats the adhesive layer 17 to a set temperature. The heating unit 21 is, for example, an infrared heater.

[0021] The heating unit 21 is positioned to face the conveyor belt 16. In one example, the heating unit 21 is positioned to face the portion of the conveyor belt 16 that is wound around the second pulley 15. Therefore, the medium 99 is pressed by the pressing unit 19 toward the portion of the conveyor belt 16 that has just been heated by the heating unit 21. This makes it easier for the conveyor belt 16 to hold the medium 99.

[0022] The printing device 11 includes a measurement unit 22. The measurement unit 22 is configured to measure the temperature of the adhesive layer 17. The measurement unit 22 may include a contact-type temperature sensor or a non-contact-type temperature sensor. The measurement unit 22 is positioned to measure the temperature of a portion of the conveyor belt 16 immediately after it has been heated by the heating unit 21. The measurement unit 22 is positioned to measure the temperature of a portion of the conveyor belt 16 immediately before the medium 99 is pressed against it by the pressing unit 19. The measurement unit 22 is positioned between a portion of the conveyor belt 16 that faces the heating unit 21 and a portion that faces the pressing unit 19. The measurement unit 22 may measure the temperature of the heating unit 21 as the temperature of the adhesive layer 17.

[0023] The printing device 11 includes a detection unit 23. The detection unit 23 is configured to detect the adhesive strength of the adhesive layer 17. The adhesive strength of the adhesive layer 17 changes depending on the state of the adhesive layer 17. In one example, the detection unit 23 is configured to detect the load current of the drive unit 20. The detection unit 23 detects the adhesive strength based on the load current. When the medium 99 is peeled off from the conveyor belt 16, resistance is applied to the conveyor belt 16. At this time, a load current flows through the drive unit 20. The greater the resistance, the greater the load current. Therefore, the greater the adhesive strength, the greater the load current. The detection unit 23 may be configured to detect the load applied to the release roller 18. The detection unit 23 may detect the adhesive strength based on the load. The greater the adhesive strength, the greater the load applied to the release roller 18.

[0024] The printing device 11 may include a processing unit 24. The processing unit 24 is configured to perform pre-processing on the medium 99. The processing unit 24 is configured to apply a processing liquid to the medium 99 before printing. The processing unit 24 applies the processing liquid to the medium 99 to facilitate fixing of the liquid from the printing unit 12 to the medium 99. In the transport direction, the processing unit 24 is located upstream of the printing unit 12. The processing unit 24 faces, for example, the conveyor belt 16. The processing unit 24 may apply the processing liquid to the medium 99 before it is attached to the conveyor belt 16. The printing device 11 may be supplied with a medium 99 to which processing liquid has already been applied. For example, the printing device 11 may be configured to print on a medium 99 to which processing liquid has been applied by another device.

[0025] The printing device 11 may include a cleaning unit 25. The cleaning unit 25 is configured to clean the conveyor belt 16. More specifically, the cleaning unit 25 is configured to clean the adhesive layer 17. The adhesive layer 17 becomes dirty due to the adhesion of liquid, treatment liquid, or fluff from the medium 99. When the adhesive layer 17 becomes dirty, its adhesive strength is likely to decrease. By cleaning the adhesive layer 17 with the cleaning unit 25, its adhesive strength is likely to be maintained.

[0026] The cleaning unit 25 faces the conveyor belt 16. The cleaning unit 25 faces a portion of the conveyor belt 16 after the medium 99 has been peeled off and before the conveyor belt 16 is heated by the heating unit 21. The cleaning unit 25 comes into contact with the adhesive layer 17 to clean the adhesive layer 17.

[0027] The cleaning unit 25 has a cleaning tank 26. The cleaning tank 26 is configured to store a cleaning liquid. The cleaning liquid is, for example, water. The cleaning unit 25 has a cleaning brush 27. The cleaning brush 27 comes into contact with the adhesive layer 17. The cleaning brush 27 is attached to the cleaning tank 26. The cleaning brush 27 is attached so as to rotate relative to the cleaning tank 26. The cleaning brush 27 may be driven to rotate, or may be rotated in a driven manner relative to the conveyor belt 16. The cleaning brush 27 is attached to the cleaning tank 26 so as to come into contact with the cleaning liquid. The cleaning brush 27 cleans the adhesive layer 17 with the cleaning liquid by rotating.

[0028] The printing device 11 may include an information processing device 31. The information processing device 31 is a device that processes information related to the printing device 11. The information processing device 31 comprehensively controls the printing device 11. The information processing device 31 controls the printing unit 12, the driving unit 20, the heating unit 21, the measuring unit 22, the detecting unit 23, the processing unit 24, the cleaning unit 25, etc.

[0029] <Information processing device> The information processing device 31 includes a control unit 32 and a storage unit 33. The control unit 32 is a processor such as a CPU or a GPU. The storage unit 33 is a memory such as a ROM or a RAM. The storage unit 33 is configured to store a program. The control unit 32 is configured to execute processing in accordance with the program stored in the storage unit 33. Therefore, the information processing device 31 is realized as a computer.

[0030] The information processing device 31 may be a device separate from the printing device 11. The information processing device 31 may be an external device configured to communicate with the printing device 11 via a network. The information processing device 31 may be a personal computer or a server.

[0031] As shown in Fig. 2, the storage unit 33 stores a machine-learned model 34. The model 34 is configured to output an output parameter in response to an input parameter. The output parameter is the lifespan of the adhesive layer 17. The model 34 is configured to output the lifespan of the adhesive layer 17 in response to an input parameter.

[0032] The output parameters may include the length of the medium 99 that the conveyor belt 16 can convey. For example, the model 34 may output the remaining length of the medium 99 for which the adhesive layer 17 can exert the adhesive force necessary to hold the medium 99. That is, the model 34 may output the conveying distance that the conveyor belt 16 can convey. The model 34 may output the life of the adhesive layer 17 as the length of the medium 99 that the conveyor belt 16 can convey.

[0033] The output parameters may include the time during which the conveyor belt 16 can be used. For example, the model 34 may output the remaining time during which the adhesive layer 17 can exert the adhesive force necessary to hold the medium 99. In other words, the model 34 may output the remaining time during which the conveyor belt 16 can be used for transport. The model 34 may output the remaining time during which the conveyor belt 16 can be used for transport as the life of the adhesive layer 17.

[0034] The adhesive layer 17 deteriorates over time. When the adhesive layer 17 can no longer exert the adhesive force required to hold the medium 99, the adhesive layer 17 must be replaced. The point at which the adhesive layer 17 can no longer exert the adhesive force required to hold the medium 99 is the end of its life. In other words, the end of the life of the adhesive layer 17 is the point at which the adhesive layer 17 can no longer exert the required adhesive force even when heated by the heating unit 21.

[0035] The adhesive layer 17 is usually provided with a predetermined service life, service distance, etc., during which it can exert the adhesive force necessary to hold the medium 99. For example, the service life of the adhesive layer 17 is 30 days. In this case, the user replaces the adhesive layer 17 when the number of days the conveyor belt 16 has been used approaches 30 days. For example, the service life of the adhesive layer 17 is 30 km. In this case, the user replaces the adhesive layer 17 when the length of the medium 99 conveyed by the conveyor belt 16 approaches 30 km.

[0036] The service life and service distance are determined under conditions assuming normal usage. Therefore, the service life of the adhesive layer 17 may be shorter than the service life or service distance depending on the usage conditions. For example, if the adhesive layer 17 is heated more than necessary by the heating unit 21, the adhesive layer 17 is likely to deteriorate. For example, if the adhesive layer 17 is cleaned less frequently by the cleaning unit 25, the adhesive layer 17 is likely to deteriorate. For example, if a large amount of liquid is ejected onto the medium 99, the adhesive layer 17 is likely to deteriorate. For example, if a large amount of treatment liquid is applied to the medium 99, the adhesive layer 17 is likely to deteriorate. For example, the adhesive layer 17 is likely to deteriorate depending on the type of medium 99 being transported. For example, if a large amount of liquid is flushed, the adhesive layer 17 is likely to deteriorate. In such cases, the service life of the adhesive layer 17 is likely to be shortened.

[0037] As shown in Figure 3, the lifespan of adhesive layer 17 varies depending on the usage conditions of adhesive layer 17. The graph shown in Figure 3 shows the lifespan of adhesive layer 17 as durability. The time when durability reaches 0 is the time when adhesive layer 17 can no longer exert the adhesive force required to hold medium 99.

[0038] The first graph G1 shows the change in durability under normal usage conditions. In this case, the lifespan of the adhesive layer 17 coincides with the predetermined service life and service distance. The second graph G2 shows the change in durability under usage conditions that tend to deteriorate the adhesive layer 17. For example, the second graph G2 shows the change in durability when the adhesive layer 17 is continuously used at high temperatures. In this case, the lifespan of the adhesive layer 17 is shorter than normal. The third graph G3 shows the change in durability under usage conditions that tend to deteriorate the adhesive layer 17 even more. For example, the third graph G3 shows the change in durability when a medium 99 with a large amount of treatment liquid applied is continuously transported. In this case, the lifespan of the adhesive layer 17 is even shorter than normal. In the third graph G3, the slope changes at the position indicated by T1. This is because the usage conditions change at the position indicated by T1. For example, this is because the amount of treatment liquid applied at the position indicated by T1 is reduced.

[0039] The adhesive strength changes with temperature. The degree of change in adhesive strength with respect to temperature varies depending on the degree of deterioration of the adhesive layer 17. For example, if the adhesive layer 17 is deteriorated, the adhesive strength is unlikely to increase even if the adhesive layer 17 is at a high temperature. Therefore, the degree of deterioration of the adhesive layer 17 can be determined from the adhesive strength and temperature. In other words, the durability of the adhesive layer 17 can be determined from the adhesive strength and temperature.

[0040] The lifespan of the adhesive layer 17 varies depending on the rate at which the adhesive layer 17 deteriorates. For example, if the rate at which the adhesive layer 17 deteriorates is high, the lifespan of the adhesive layer 17 will be short. The rate at which the adhesive layer 17 deteriorates can be determined from the amount of adhesive layer 17 used and the durability of the adhesive layer 17. The amount of adhesive layer 17 used is the amount of adhesive layer 17 that has been used since the adhesive layer 17 began to be used. Therefore, the lifespan of the adhesive layer 17 can be determined from the adhesive strength, temperature, and amount used. Therefore, the model 34 can output the lifespan of the adhesive layer 17 from the adhesive strength, temperature, and amount used.

[0041] The input parameters include the adhesive strength of the adhesive layer 17. The input parameters include the temperature of the adhesive layer 17. The input parameters include the amount of use of the adhesive layer 17. The amount of use may include the distance the adhesive layer 17 has been used, or the duration of use of the adhesive layer 17, or both. The distance of use is the total length of the medium 99 transported by the transport belt 16. The duration of use is the total time the transport belt 16 has been used.

[0042] The input parameters may include setting values. Setting values ​​are parameters that are set in the printing device 11. The setting values ​​are set in the printing device 11 by a user. The setting values ​​may be set manually or automatically based on print data provided by the user. The printing device 11 prints on the medium 99 based on the setting values.

[0043] The set value is related to the deterioration of the adhesive layer 17. The set value is related to the deterioration pace of the adhesive layer 17. Therefore, by including the set value in the input parameters, the prediction accuracy of the model 34 is improved.

[0044] The set value may include the amount of liquid ejected onto the medium 99 by the printing unit 12. The adhesive layer 17 becomes soiled when it comes into contact with the liquid. If the amount of liquid ejected is large, the adhesive layer 17 is more likely to become soiled. Therefore, if the amount of liquid ejected is large, the adhesive layer 17 is more likely to deteriorate. Therefore, if the amount of liquid ejected is large, the adhesive layer 17 deteriorates at a faster rate.

[0045] The set value may include the amount of treatment liquid applied to the medium 99. For example, the set value may include the amount of treatment liquid applied to the medium 99 by the processing unit 24. The set value may include the amount of treatment liquid applied to the medium 99 by a device other than the printing device 11. The adhesive layer 17 becomes soiled when it comes into contact with the treatment liquid. If a large amount of treatment liquid is applied, the adhesive layer 17 is more likely to become soiled. Therefore, if a large amount of treatment liquid is applied, the adhesive layer 17 is more likely to deteriorate. Therefore, if a large amount of treatment liquid is applied, the adhesive layer 17 deteriorates at a faster rate.

[0046] The set value may include the amount of flushing by the printing unit 12. That is, the set value may include the amount of liquid ejected from the printing unit 12 by flushing. If the amount of flushing is large, the adhesive layer 17 is likely to become dirty. Therefore, if the amount of flushing is large, the adhesive layer 17 is likely to deteriorate. Therefore, if the amount of flushing is large, the rate of deterioration increases.

[0047] The set value may include the number of cleanings performed by the cleaning unit 25. For example, the set value may include the planned number of cleanings performed by the cleaning unit 25. If the number of cleanings is small, the adhesive layer 17 is likely to become dirty. Therefore, if the number of cleanings is small, the adhesive layer 17 is likely to deteriorate. Therefore, if the number of cleanings is small, the rate of deterioration of the adhesive layer 17 increases.

[0048] The set value may include the medium type. The medium type is the type of medium 99. The set value may include a parameter indicating the type of medium 99 to be printed on. The type of medium 99 is, for example, cotton, nylon, silk, etc. The rate at which the adhesive layer 17 deteriorates varies depending on the type of medium 99. For example, when printing on a medium 99 with a lot of fuzz, the rate at which the adhesive layer 17 deteriorates is likely to be greater.

[0049] The set value may include the operating temperature of the adhesive layer 17. For example, the set value may include a parameter indicating the expected temperature of the adhesive layer 17 to be heated by the heating unit 21. If the operating temperature of the adhesive layer 17 is high, the adhesive layer 17 is likely to deteriorate. Therefore, if the operating temperature of the adhesive layer 17 is high, the rate of deterioration of the adhesive layer 17 is likely to increase.

[0050] 2, the storage unit 33 stores usage data 35. The usage data 35 is data indicating the amount of usage of the adhesive layer 17. The usage data 35 may be data indicating the distance that the adhesive layer 17 has been used since it was replaced, or may be data indicating the amount of time that the adhesive layer 17 has been used since it was replaced. The usage data 35 is used as an input parameter of the model 34.

[0051] The control unit 32 is configured to count the amount of adhesive layer 17 used. The control unit 32 may count the length of the medium 99 transported by the transport belt 16. In this case, it can also be said that the control unit 32 counts the transport distance of the transport belt 16. The control unit 32 may also count the time that the transport belt 16 is used.

[0052] The control unit 32 stores the counted amount of usage of the adhesive layer 17 in the storage unit 33. This updates the usage amount data 35. When the adhesive layer 17 is replaced, the control unit 32 resets the usage amount data 35.

[0053] The control unit 32 is configured to derive the lifespan of the adhesive layer 17. More specifically, the control unit 32 derives the lifespan of the adhesive layer 17 by using a model 34. The control unit 32 inputs input parameters to the model 34. As a result, the control unit 32 causes the model 34 to output the lifespan of the adhesive layer 17. In this way, the control unit 32 derives the lifespan of the adhesive layer 17.

[0054] The control unit 32 is configured to acquire the temperature of the adhesive layer 17. In one example, the control unit 32 acquires the temperature of the adhesive layer 17 from the measurement unit 22. The control unit 32 is configured to acquire the adhesive strength of the adhesive layer 17. In one example, the control unit 32 acquires the adhesive strength from the detection unit 23. More specifically, the control unit 32 acquires the adhesive strength at the temperature acquired from the measurement unit 22 from the detection unit 23. The control unit 32 is configured to acquire the usage amount. In one example, the control unit 32 acquires the current usage amount from the memory unit 33.

[0055] The control unit 32 inputs input parameters to the model 34. The control unit 32 inputs the acquired adhesive strength, temperature, and usage amount to the model 34. As a result, the control unit 32 causes the model 34 to output the lifespan of the adhesive layer 17 as an output parameter. The control unit 32 acquires the lifespan of the adhesive layer 17 output by the model 34.

[0056] The control unit 32 is configured to notify the output parameters. The control unit 32 notifies the lifespan of the adhesive layer 17, for example, by displaying the lifespan of the adhesive layer 17 on a monitor provided in the printing device 11 or a display provided in an external device of the printing device 11. This allows the user to understand the lifespan of the adhesive layer 17. This makes it easier for the user to replace the adhesive layer 17 at an appropriate time. This improves user convenience.

[0057] The control unit 32 may input a setting value to the model 34. The control unit 32 may derive the lifespan of the adhesive layer 17 by inputting the setting value to the model 34 in addition to the temperature, adhesive strength, and usage amount. In one example, the control unit 32 acquires the setting value by accepting settings related to the printing device 11 from the user. For example, the control unit 32 can acquire the setting value before starting printing, thereby notifying the user of the lifespan of the adhesive layer 17 before starting printing. In this case, the user can consider replacing the adhesive layer 17 before starting printing. Furthermore, by inputting the setting value to the model 34, the model 34 can predict, for example, the lifespan of the adhesive layer 17 when printing is performed using that setting value.

[0058] Next, the notification process will be described. The notification process is a process for notifying the end of the life of the adhesive layer 17. The notification process is executed by the control unit 32. The notification process is executed by the control unit 32 processing in accordance with a program stored in the storage unit 33. The control unit 32 starts the notification process based on, for example, an instruction from the user.

[0059] 4, in step S11, the control unit 32 acquires the temperature of the adhesive layer 17, the adhesive strength of the adhesive layer 17, and the amount of adhesive layer 17 used. In detail, the control unit 32 acquires the temperature of the adhesive layer 17 from the measurement unit 22, the adhesive strength of the adhesive layer 17 from the detection unit 23, and the amount of adhesive layer 17 used from the memory unit 33. The control unit 32 may acquire setting values ​​in step S11.

[0060] In step S12, the control unit 32 derives the lifespan of the adhesive layer 17. More specifically, the control unit 32 inputs the parameters acquired in step S11 into the model 34. As a result, the model 34 outputs an output parameter indicating the lifespan of the adhesive layer 17.

[0061] In step S13, the control unit 32 notifies the user of the life of the adhesive layer 17. Specifically, the control unit 32 notifies the user of the output parameters acquired in step S12. The control unit 32 may notify the user of the length of the medium 99 that the conveyor belt 16 can convey, or may notify the user of the time that the conveyor belt 16 can be used. After completing the process of step S13, the control unit 32 ends the notification process.

[0062] Next, an example of generating the model 34 will be described. The model 34 is generated by training a machine learning model with learning data. The machine learning model learns the correspondence between input parameters and output parameters based on the learning data. This generates the model 34, which is mapping data of the input parameters and output parameters.

[0063] 5, for example, a dataset 40 is used to generate the model 34. The model 34 is obtained by having a computer train a machine learning model using a plurality of datasets 40 as learning data.

[0064] Dataset 40 is a set of data indicating the usage status of adhesive layer 17 from the start of use until the end of its life. Dataset 40 compiles a series of data indicating the usage status until adhesive layer 17 can no longer exert the adhesive strength necessary to hold medium 99. Various parameters related to the usage status of adhesive layer 17 are associated with dataset 40. Parameters such as operating temperature, adhesive strength, discharge amount, application amount, number of cleanings, flushing amount, medium type, usage distance, and usage time are associated with each print count in dataset 40. Dataset 40 may include parameters other than those described above. For example, dataset 40 may include a parameter indicating the time elapsed since adhesive layer 17 was replaced.

[0065] The data set 40 may be prepared by the control unit 32 acquiring various parameters from the printing device 11. The control unit 32 may train a machine learning model using the data set 40, thereby generating the model 34.

[0066] The machine learning model learns the correspondence between the lifespan of the adhesive layer 17 and various parameters by inputting multiple data sets 40. In other words, the machine learning model learns the correspondence between the various parameters and the rate of deterioration of the adhesive layer 17. Therefore, the model 34 generated based on such data sets 40 can predict the lifespan of the adhesive layer 17.

[0067] <Actions and Effects of the Example> Next, the operation and effects of the above embodiment will be described. (1) The control unit 32 inputs adhesive strength, temperature, and usage amount as input parameters to the model 34, thereby causing the model 34 to output the lifespan of the adhesive layer 17 as an output parameter and notifying the user of the lifespan of the adhesive layer 17. The adhesive strength changes depending on the temperature of the adhesive layer 17. The adhesive strength also changes depending on the deterioration of the adhesive layer 17. Therefore, the degree of deterioration of the adhesive layer 17 can be determined from the temperature and adhesive strength. The rate of deterioration of the adhesive layer 17 can be determined from the degree of deterioration and usage amount. In other words, the lifespan of the adhesive layer 17 can be determined from the degree of deterioration and usage amount. With the above configuration, the user can determine the lifespan of the adhesive layer 17 in advance. This makes it easier for the user to replace the adhesive layer 17 in a planned manner. This improves convenience.

[0068] (2) The input parameters include the amount of treatment liquid applied to the medium 99. When the treatment liquid comes into contact with the adhesive layer 17, the adhesive layer 17 is more likely to deteriorate. Therefore, if a large amount of treatment liquid is applied, the adhesive layer 17 is more likely to deteriorate. According to the above configuration, the prediction accuracy of the model 34 is improved.

[0069] (3) The input parameters include the amount of liquid ejected onto the medium 99 by the printing unit 12. When the liquid comes into contact with the adhesive layer 17, the adhesive layer 17 is more likely to deteriorate. Therefore, if the ejection amount is large, the adhesive layer 17 is more likely to deteriorate. With the above configuration, the prediction accuracy of the model 34 is improved.

[0070] (4) The input parameters include the number of cleanings by the cleaning unit 25. When the cleaning unit 25 cleans the conveyor belt 16, the performance of the adhesive layer 17 is likely to be maintained. Therefore, if the cleaning unit 25 cleans the conveyor belt 16 less frequently, the adhesive layer 17 is likely to deteriorate. According to the above configuration, the prediction accuracy of the model 34 is improved.

[0071] (5) The input parameters include the amount of flushing by the printing unit 12. When liquid adheres to the adhesive layer 17, the adhesive layer 17 is more likely to deteriorate. Therefore, if the amount of flushing is large, the adhesive layer 17 is more likely to deteriorate. With the above configuration, the prediction accuracy of the model 34 is improved.

[0072] (6) The input parameters include the type of medium. Depending on the type of medium, the adhesive layer 17 may be easily soiled. Therefore, depending on the type of medium, the adhesive layer 17 may be easily deteriorated. With the above configuration, the prediction accuracy of the model 34 is improved.

[0073] (7) The usage amount of the adhesive layer 17 includes the total length of the medium 99 transported by the transport belt 16. The output parameters include the length of the medium 99 that can be transported by the transport belt 16. According to the above configuration, the user can easily intuitively grasp the lifespan of the adhesive layer 17.

[0074] (8) The usage amount of the adhesive layer 17 includes the total time that the conveyor belt 16 has been used. The output parameters include the time that the conveyor belt 16 can be used. According to the above configuration, the user can easily intuitively grasp the lifespan of the adhesive layer 17.

[0075] <Technical philosophy> The technical concepts and effects that can be understood from the above-described embodiment and modified examples will be described below.

[0076] (A) A printing device includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveyor belt that has an adhesive layer and conveys the medium attached to the adhesive layer, a heating unit that heats the adhesive layer, a measuring unit that measures the temperature of the adhesive layer, a detecting unit that detects the adhesive strength of the adhesive layer, a driving unit that drives the conveyor belt, a memory unit that stores a machine-learned model, and a control unit that counts the amount of use of the adhesive layer. The model is configured to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of use of the adhesive layer as input parameters and output the lifespan of the adhesive layer as an output parameter. The control unit inputs the input parameters to the model, causing the model to output the output parameter and reporting the output parameter. The adhesive strength changes depending on the temperature of the adhesive layer. The adhesive strength also changes depending on the deterioration of the adhesive layer. Therefore, the degree of deterioration of the adhesive layer can be determined by the temperature and adhesive strength. The rate of deterioration of the adhesive layer can be determined by the degree of deterioration and the amount of use. In other words, the lifespan of the adhesive layer can be determined by the degree of deterioration and the amount of use. According to the above configuration, the user can know the life span of the adhesive layer in advance, which makes it easier for the user to replace the adhesive layer in a planned manner, thereby improving convenience.

[0077] (B) The printing device may include a processing unit that applies treatment liquid to the medium before printing, and the input parameters may include an amount of treatment liquid applied to the medium. When the treatment liquid comes into contact with the adhesive layer, the adhesive layer is likely to deteriorate. Therefore, if a large amount of treatment liquid is applied, the adhesive layer is likely to deteriorate. This configuration improves the prediction accuracy of the model.

[0078] (C) In the printing device described above, the input parameters may include a discharge amount of liquid discharged onto a medium by the printing unit. When the liquid comes into contact with the adhesive layer, the adhesive layer is likely to deteriorate. Therefore, a large discharge amount makes the adhesive layer more likely to deteriorate. This configuration improves the prediction accuracy of the model.

[0079] (D) The printing device may include a cleaning unit that cleans the conveyor belt, and the input parameters may include the number of cleanings performed by the cleaning unit. When the cleaning unit cleans the conveyor belt, the performance of the adhesive layer is likely to be maintained. Therefore, if the cleaning unit cleans the belt less frequently, the adhesive layer is likely to deteriorate. This configuration improves the prediction accuracy of the model.

[0080] (E) In the above-described printing device, the printing unit may be configured to flush the conveyor belt, and the input parameters may include a flushing amount by the printing unit. When liquid adheres to the adhesive layer, the adhesive layer is more likely to deteriorate. Therefore, a large flushing amount makes the adhesive layer more likely to deteriorate. This configuration improves the prediction accuracy of the model.

[0081] (F) In the printing device described above, the input parameters may include the type of medium. Depending on the type of medium, the adhesive layer may be easily soiled. Therefore, depending on the type of medium, the adhesive layer may be easily deteriorated. With the above configuration, the prediction accuracy of the model is improved.

[0082] (G) In the printing device, the control unit may count the length of the medium transported by the transport belt, the amount of adhesive layer used may include a total length of the medium transported by the transport belt, and the output parameters may include a length of the medium that the transport belt can transport. This configuration makes it easier for a user to intuitively grasp the life of the adhesive layer.

[0083] (H) In the printing device, the control unit may count the time the conveyor belt has been used, the amount of adhesive layer used may include a total time the conveyor belt has been used, and the output parameters may include a time the conveyor belt can be used. This configuration makes it easier for a user to intuitively grasp the lifespan of the adhesive layer.

[0084] (I) An information processing device processes information related to a printing device that includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveyor belt that has an adhesive layer and conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer, and the information processing device includes a memory unit that stores a machine-learned model and a control unit that counts the amount of use of the adhesive layer, the model is configured to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of use of the adhesive layer as input parameters and output the lifespan of the adhesive layer as an output parameter, and the control unit inputs the input parameters to the model, causing the model to output the output parameter and notifying the user of the output parameter. With the above configuration, the same effects as those of the above-mentioned printing device can be achieved.

[0085] (J) An information processing method for processing information about a printing device including a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveyor belt having an adhesive layer that conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer, includes inputting input parameters into a machine-learned model configured to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of usage of the adhesive layer as input parameters, thereby causing the model to output the output parameters, and reporting the output parameters. This method achieves the same effects as the printing device described above.

[0086] (J) A program that causes a computer to process information about a printing device that includes a printing unit that prints an image on a medium by ejecting a liquid onto the medium, a conveyor belt that has an adhesive layer and conveys the medium attached to the adhesive layer, and a heating unit that heats the adhesive layer, the program causes the computer to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of usage of the adhesive layer as input parameters into a machine-learned model that is configured to output the life of the adhesive layer as an output parameter, and to output the output parameters from the model and to notify the user of the output parameters.The program described above achieves the same effects as the printing device described above. [Explanation of symbols]

[0087] 11...printing device, 12...printing unit, 13...conveying unit, 14...first pulley, 15...second pulley, 16...conveying belt, 17...adhesive layer, 18...release roller, 19...pressing unit, 20...driving unit, 21...heating unit, 22...measuring unit, 23...detecting unit, 24...processing unit, 25...cleaning unit, 26...cleaning tank, 27...cleaning brush, 31...information processing device, 32...control unit, 33...memory unit, 34...model, 35...usage data, 40...data set, 99...medium, G1...first graph, G2...second graph, G3...third graph.

Claims

1. a printing unit that prints an image on a medium by ejecting a liquid onto the medium; a conveyor belt having an adhesive layer and conveying a medium attached to the adhesive layer; a heating unit that heats the adhesive layer; A measurement unit that measures the temperature of the adhesive layer; a detection unit that detects the adhesive strength of the adhesive layer; a drive unit that drives the conveyor belt; a memory unit that stores the machine-learned model; a control unit that counts the amount of the adhesive layer used, the model is configured to output a lifespan of the adhesive layer as an output parameter by inputting a temperature of the adhesive layer, an adhesive strength of the adhesive layer, and a usage amount of the adhesive layer as input parameters; The control unit inputting the input parameters into the model to cause the model to output the output parameters; and notifying the output parameters.

2. a processing unit that applies a treatment liquid to the medium before printing; 2. The printing apparatus according to claim 1, wherein the input parameters include an amount of treatment liquid applied to the medium.

3. The printing device according to claim 1 , wherein the input parameters include an ejection amount of liquid ejected onto a medium by the printing unit.

4. a cleaning unit that cleans the conveyor belt; The printing apparatus according to claim 1 , wherein the input parameters include the number of cleanings performed by the cleaning unit.

5. The printing unit is configured to flush the conveyor belt; 2. The printing device according to claim 1, wherein the input parameters include an amount of flushing by the printing unit.

6. 2. The printing device of claim 1, wherein the input parameters include a media type.

7. The control unit counts the length of the medium transported by the transport belt, the amount of adhesive layer used includes the total length of the medium transported by the transport belt; 7. The printing apparatus according to claim 1, wherein the output parameters include a length of a medium that can be conveyed by the conveyor belt.

8. The control unit counts the time that the conveyor belt is used, The usage amount of the adhesive layer includes the total time during which the conveyor belt is used, 7. The printing apparatus according to claim 1, wherein the output parameters include a time during which the conveyor belt can be used.

9. a printing unit that prints an image on a medium by ejecting a liquid onto the medium; a conveyor belt having an adhesive layer and conveying a medium attached to the adhesive layer; an information processing device that processes information about a printing device having a heating unit that heats the adhesive layer, a memory unit that stores the machine-learned model; a control unit that counts the amount of the adhesive layer used, the model is configured to output a lifespan of the adhesive layer as an output parameter by inputting a temperature of the adhesive layer, an adhesive strength of the adhesive layer, and a usage amount of the adhesive layer as input parameters; The control unit inputting the input parameters into the model to cause the model to output the output parameters; and notifying the output parameters.

10. a printing unit that prints an image on a medium by ejecting a liquid onto the medium; a conveyor belt having an adhesive layer and conveying a medium attached to the adhesive layer; a heating unit that heats the adhesive layer, and an information processing method for processing information about a printing device including the heating unit by a computer, the information processing method comprising: The computer a machine-learned model configured to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of use of the adhesive layer as input parameters and output the life of the adhesive layer as an output parameter, by inputting the input parameters into the model, and causing the model to output the output parameter; and notifying the output parameter.

11. a printing unit that prints an image on a medium by ejecting a liquid onto the medium; a conveyor belt having an adhesive layer and conveying a medium attached to the adhesive layer; a heating unit that heats the adhesive layer; and a program that causes a computer to process information about a printing device that includes the heating unit, a machine-learned model configured to input the temperature of the adhesive layer, the adhesive strength of the adhesive layer, and the amount of use of the adhesive layer as input parameters and output the life of the adhesive layer as an output parameter, by inputting the input parameters into the model, and causing the model to output the output parameter; and notifying the output parameter.

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