Printing apparatus, method for controlling the printing apparatus, and program

Abstract

This suppresses the decrease in productivity when the recording medium is transported in the opposite direction to the transport direction during printing. [Solution] The printing apparatus is a printing apparatus that performs printing while transporting a roll-shaped recording medium, and comprises: transport means for transporting the recording medium; acquisition means for acquiring factor information that may affect the tension when transporting the recording medium; and control means for controlling the transport means to transport the recording medium in the opposite direction to the transport direction when performing the printing at a speed determined based on the factor information.

Description

Technical Field

[0001] The present disclosure relates to a printing apparatus that performs printing on a roll-shaped recording medium, a control method for the printing apparatus, and a program.

Background Art

[0002] The printing apparatus may be controlled so that after executing and printing one print job, the printed portion by the print job can be taken out as a product from the roll-shaped recording medium immediately.

[0003] Patent Document 1 discloses a technique for performing a part of the printing by a second print job before stopping the conveyance of the roll-shaped recording medium after finishing the printing by the first print job.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a method of performing a part of the printing by a second print job before stopping the conveyance of the roll-shaped recording medium as in Patent Document 1, after performing a part of the printing by the second print job, the recording medium is conveyed in the direction opposite to the conveyance direction during printing. When the recording medium is conveyed in the direction opposite to the conveyance direction during printing and the conveyance is interrupted due to breakage or paper jam of the recording medium, it takes a long time until the conveyance is restarted, and there is a possibility that the productivity is significantly reduced.

[0006] An object of the present disclosure is to provide a technique for suppressing a decrease in productivity when the recording medium is conveyed in the direction opposite to the conveyance direction during printing.

Means for Solving the Problems

[0007] A printing apparatus according to one aspect of the present disclosure is a printing apparatus that performs printing while transporting a roll-shaped recording medium, and is characterized by comprising: transport means for transporting the recording medium; acquisition means for acquiring factor information that may affect the tension when transporting the recording medium; and control means for controlling the transport means to transport the recording medium at a speed determined based on the factor information in the opposite direction to the transport direction when performing the printing. [Effects of the Invention]

[0008] The technology disclosed herein makes it possible to suppress the decrease in productivity when the recording medium is transported in the opposite direction to the transport direction during printing. [Brief explanation of the drawing]

[0009] [Figure 1] This is a schematic diagram of the printing system. [Figure 2] This figure shows an example of the hardware configuration of the control unit of a printing device. [Figure 3] This figure shows an example of the functional configuration of the control unit of a printing device. [Figure 4] This flowchart shows the flow of the rewind process. [Figure 5] This figure shows an example of environmental information for a printing device. [Figure 6] This figure shows an example of paper information. [Figure 7] This figure shows an example of a table for calculating the rewind speed. [Figure 8] This flowchart shows the detailed flow of the rewind speed adjustment process. [Figure 9] This figure shows an example of the screen for setting the rewind speed adjustment amount. [Modes for carrying out the invention]

[0010] The embodiments for carrying out the technology of this disclosure will be described below with reference to the drawings. Note that the following embodiments do not limit the technology of this disclosure as defined in the claims. Not all combinations of features described in these embodiments are essential as solutions to the technology of this disclosure, and multiple features may be combined arbitrarily. Identical components will be denoted by the same reference numerals. Furthermore, each step in the flowchart will be indicated by the letter "S" at the beginning.

[0011] <<Embodiment 1>> (Printing system) Figure 1 is a schematic diagram of a printing system including a printing device according to this embodiment. The printing device 101 is an inkjet printer that forms a recorded material P' by ejecting ink onto a recording medium P from a printing unit 103. The recording medium P is supplied to the printing device 101 from a paper feed unit 102, and after the printing device 101 forms the recorded material P', the recorded material P' is collected by a paper discharge unit 105. The recording medium P passes along a transport path by rollers 106, 107, and 108. The printing device 101 inspects the image acquired by the print image acquisition unit 104 on the recorded material P'. Rollers 106 to 108 can also rotate in reverse, and the recording medium P can be rewound from the paper discharge unit 105 to the paper feed unit 102. Specifically, rollers 106, 107, and 108 can perform forward transport, which is the transport direction when printing, and rewind transport, which is the reverse direction to the forward transport. Forward transport is transport from the paper feed unit 102 toward the paper discharge unit 105. Rewind transport is transport from the paper discharge unit 105 toward the paper feed unit 102. Hereafter, the process of rewinding the recording medium P will be simply referred to as "rewinding". Note that "recording" includes forming characters, figures, images, patterns, etc. on the recording medium. It also includes processing the recording medium, regardless of whether it is made apparent in a way that can be perceived by human eyes. In this embodiment, a roll of paper is assumed as the "recording medium," but it may also be cloth, plastic film, etc. There are no particular limitations on the components of the ink, but in this embodiment, it is assumed that an ink containing a pigment, water, and resin as colorants is used.

[0012] Rollers 107 and 108 are positioned at the upstream and downstream ends, respectively, of the region where the recording medium P or recording material P' is transported horizontally. Rollers 107 and 108 rotate by driving a motor (not shown) and together transport the recording medium P and recording material P' while applying tension, thus performing tension adjustment. Rollers 107 and 108 adjust the tension of the recording medium P and recording material P', for example, when rewinding, by a clutch (not shown) that can control the torque driven by the control unit 110 (described later), according to the tension value measured by the tension measuring instrument 111 (described later). A configuration may be added to control the speed of rollers 107 and 108 with the tension measuring instrument 111 in order to adjust the tension of the recording medium P and recording material P'. In this case, there are two methods for tension control: a torque control method that controls the torque value transmitted from the clutch, and a speed control method that controls the roller speed. The tension control method can be switched or used simultaneously depending on the purpose.

[0013] The printing apparatus 101 includes a control unit 110, a tension meter 111, a thermometer / hygrometer 112, and a positional displacement measurement sensor 113. The tension meter 111 is a unit for measuring tension when transporting the recording medium between rollers 107 and 108. The thermometer / hygrometer 112 measures the ambient temperature and humidity inside the printing apparatus 101 and transmits environmental information, including temperature and humidity information, to the control unit. The positional displacement measurement sensor 113 is a sensor capable of measuring the amount of positional displacement of the recording medium relative to a predetermined transport position. The detection result is sent to the control unit 110.

[0014] The control unit 110 is a unit that controls all parts of the entire printing apparatus 101. The control unit 110 includes a CPU, a storage device, a controller equipped with various control units, an external interface, and an operation unit 118 for user input and output. The operation of the printing apparatus 101 is controlled based on commands from the controller or a host PC 119, such as a host computer connected to the controller via an external interface.

[0015] (Printing device control unit) Figure 2 is a diagram showing an example of the hardware configuration of the control unit of the printing apparatus. The control unit 110 of the printing apparatus 101 includes a CPU 201, a RAM 202, a ROM 203, a storage device 204, an image inspection device 205, a general-purpose interface (I / F) 206, a user interface (I / F) 207, and a device interface (I / F) 208.

[0016] Each device within the control unit 110 is connected so as to be able to transmit and receive data to and from each other via the main bus 209. The CPU 201 is a processor that comprehensively controls each part within the printing apparatus 101. The RAM 202 functions as the main memory, work area, etc. of the CPU 201. The ROM 203 stores a group of programs to be executed by the CPU 201. The storage device 204 stores applications to be executed by the CPU 201, print jobs used for printing, image data, etc.

[0017] The image inspection device 205 performs imaging of the recording medium (printed matter) P' using the print image acquisition unit 104 within the printing apparatus 101 and inspects the recording medium P' from the captured image data. The general-purpose I / F 206 is, for example, a USB or LAN, and it is possible to input a print job, etc. The user I / F 207 performs display control to display a UI screen for performing current status and settings on a liquid crystal display, etc., on the operation unit 118 and conveys the information displayed on the UI screen to the user. Also, the user I / F 207 receives instructions regarding print settings and inspection settings of a job from the user. The device I / F 208 requests processing for each hardware within the printing apparatus 101 and synchronizes the processing timing, etc.

[0018] (Functional Configuration of the Control Unit of the Printing Apparatus) Figure 3 shows the functional configuration of the control unit of the printing device. The control unit 110 of the printing device 101 includes an environmental information acquisition unit 301, a paper information acquisition unit 302, a tension acquisition unit 303, a rewind speed calculation unit 304, a rewind execution unit 305, and a rewind result acquisition unit 306. The processing performed by these functional configurations can be realized by the CPU 201 executing a program, so it can be said that the CPU 201 has these functional configurations. However, the CPU 201 does not need to realize all of these processes, and may be provided with dedicated processing circuits to realize one or more processes. In this embodiment, each component may exchange information with other components by any method. For example, each component may store the acquired or created information in the RAM 202 so that other components can acquire this information. Alternatively, each component may output the acquired or created information to other components without storing it in the RAM 202.

[0019] The environmental information acquisition unit 301 acquires information such as temperature and humidity of the printing environment, which may affect print quality due to factors such as expansion and contraction of the recording medium (paper, etc.) and the generation of static electricity, as printing environment information (hereinafter referred to as environmental information). Since environmental information is information that may affect the tension when transporting the recording medium, it can be said that it is included in the information of factors that may affect the tension when transporting the recording medium.

[0020] The paper information acquisition unit 302 receives a print job submitted from the host device 210, analyzes the received job, and acquires paper information, which is characteristic information of the recording medium that indicates the characteristics of the recording medium used in printing related to the print job. Paper information includes the type of paper (recording medium), the basis weight of the paper (recording medium), and the allowable tension of the paper (recording medium). Since paper information is information that can affect the tension when transporting the recording medium, it can also be said to be included in the information of factors that can affect the tension when transporting the recording medium.

[0021] The tension acquisition unit 303 acquires the tension applied to the recording medium during transport, as measured by the tension measuring instrument 111.

[0022] The rewind speed calculation unit 304 calculates and obtains the rewind speed, which is the transport speed of the recording medium when performing a rewind process that transports the recording medium in the opposite direction to the transport direction when printing.

[0023] The rewinding unit 305 performs a rewinding process that transports the recording medium in the opposite direction to the transport direction during printing by rotating rollers 106, 107, and 108, including the paper feed roller and paper discharge roller, in the reverse direction to the direction during printing.

[0024] The rewind result acquisition unit 306 acquires rewind processing result information when the rewind process is completed. This information includes how much the recording medium has shifted as a result of performing the rewind process.

[0025] (Rewind process) Figure 4 is a flowchart illustrating the flow of the rewinding process. The process shown in Figure 4 involves completing printing by the first print job and stopping the transport of the roll-shaped recording medium, while simultaneously performing a portion of the printing by the second print job, which will be executed after the first print job. Then, a rewinding process is performed to transport the recording medium in the opposite direction to the transport direction during printing, to the cutting position, in order to cut out the printed portion from the first print job as the final product. For example, the rewind amount is set to 30m. The process in this flowchart is realized when the CPU 201 of the printing device 101 executes the control program related to this flowchart.

[0026] In S401, the environmental information acquisition unit 301 acquires environmental information indicating the temperature (air temperature) and humidity of the printing environment in which printing is performed by the printing device 101.

[0027] (Environmental information) Figure 5 shows an example of environmental information for a printing device. The environmental information 500 for the printing device includes information on the temperature 501 and information on the humidity 502 for the printing device. The temperature 501 indicates the temperature of the environment in which printing is performed by the printing device 101. The humidity 502 indicates the humidity of the environment in which printing is performed by the printing device 101. In Figure 5, the temperature is 25°C and the humidity is 40%.

[0028] In S402, the paper information acquisition unit 302 acquires paper information.

[0029] (Paper information) Figure 6 shows an example of paper information. Paper information 600 is information pre-stored in the printing device 101 and includes information on paper type 601, basis weight 602, forward transport speed 603, maximum allowable tension 604, and minimum allowable tension 605.

[0030] Paper type 601 indicates the name of the paper used for printing. Basis weight 602 indicates the basis weight of the paper used for printing. gsm shown in basis weight 602 is an abbreviation for Grams Per Square Meter, and is a value expressed in grams as the weight per square meter. Forward transport speed 603 indicates the speed at which the paper is transported during printing. mpm shown in forward transport speed 603 is an abbreviation for Meters Per Minute, and is a value expressed in meters as the distance the paper is transported per minute. In addition, the maximum allowable tension 604 and minimum allowable tension 605 indicate the magnitude of the allowable tension that can be applied to the paper, with the maximum allowable tension 604 showing the maximum allowable tension and the minimum allowable tension 605 showing the minimum allowable tension. N shown in maximum allowable tension 604 and minimum allowable tension 605 is an abbreviation for Newton. If a tension greater than the maximum allowable tension 604 is applied to the paper, the paper is more likely to break. If a tension lower than the minimum allowable tension 605 is applied to the paper, the paper will sag, increasing the likelihood of a paper jam. The maximum allowable tension 604 and the minimum allowable tension 605 may be arbitrarily set by the user before printing begins.

[0031] In S403, the rewind speed calculation unit 304 calculates and obtains the rewind speed, which is the transport speed of the recording medium when the rewind process is executed. For example, a table for calculating the rewind speed may be used to calculate the rewind speed.

[0032] (Table for calculating rewind speed) Figure 7 shows an example of a table for calculating the rewind speed. The rewind speed calculation table 700 is a table that associates factor information with the transport speed in the reverse direction, and is a table that associates paper type 701, basis weight 702, temperature 703, humidity 704 with the rewind speed 705. For example, if the environmental information of the printing device is the environmental information of the printing device 500 and the characteristic information of the recording medium is the paper information 600, then 30 mpm is obtained as the rewind speed determined based on the rewind speed calculation table 700. Also, if the paper type is not present in the rewind speed calculation table, the rewind speed associated with the paper type with the closest basis weight is set.

[0033] In S404, the rewinding unit 305 performs the rewinding process of the recording medium, setting it to the rewinding speed acquired in S403. For example, if 30 mpm is acquired as the rewinding speed, the rewinding unit 305 controls rollers 106, 107, 108, etc., to achieve a rewinding speed of 30 mpm and performs the rewinding process to rewind the recording medium.

[0034] In step S405, the rewind speed calculation unit 304 repeatedly adjusts the rewind speed until the rewind process is completed. The details of the rewind speed adjustment process will be explained using Figure 8.

[0035] (Rewind speed adjustment process (S405)) Figure 8 is a flowchart showing the detailed flow of the rewind speed adjustment process (S405).

[0036] In S801, the rewind speed calculation unit 304 determines whether a predetermined time has elapsed since the start of the rewind speed adjustment process or the determination of the completion of rewinding. For example, 5 seconds is set as the predetermined time. If it is determined that the predetermined time has not elapsed (NO in S801), the process of S801 is executed again. If it is determined that the predetermined time has elapsed (YES in S801), the process moves on to S802. Thus, the process of S801 is repeatedly executed until the predetermined time has elapsed, at which point the process moves on to S802. Alternatively, a predetermined tension change may be used instead of a predetermined time. Specifically, the speed adjustment process may be performed when the tension applied to the recording medium changes by 1 N (Newton).

[0037] In S802, the tension acquisition unit 303 uses the tension measuring instrument 111 to measure the tension when transporting the recording medium in the opposite direction to the transport direction when printing.

[0038] In S803, the rewind speed calculation unit 304 compares the tension measured in S802 with the maximum allowable tension of the paper. If the comparison result is obtained that the measured tension is greater than the maximum allowable tension (YES in S803), the process moves to S804. If the comparison result is obtained that the measured tension is not greater than the maximum allowable tension (NO in S803), the process moves to S805. For example, in the paper information 600 shown in Figure 6, the maximum allowable tension 604 is 200N, so if the measured tension is greater than 200N, the process moves to S804, and if the measured tension is the same as or less than 200N, the process moves to S805.

[0039] In S804, the rewind unit 305 adjusts the set rewind speed to a lower value. This reduces the rewind speed so that the measured tension falls within the allowable tension range. The amount by which the rewind speed is reduced may be set automatically by the system based on the paper information, or it may be set by the user. Details of setting the adjustment amount when reducing the rewind speed (deceleration) will be described later. The rewind unit 305 then sets the rewind speed to the adjusted speed and controls the transport of the recording medium at the adjusted speed.

[0040] In S805, the rewind speed calculation unit 304 compares the tension measured in S802 with the minimum allowable tension of the paper. If the comparison result is that the measured tension is less than the minimum allowable tension (YES in S805), the process moves to S806. If the comparison result is that the measured tension is not less than the minimum allowable tension (NO in S805), the process moves to S807 without changing the rewind speed. For example, in the paper information 600 shown in Figure 6, the minimum allowable tension 605 is 90N, so if the measured tension is less than 90N, the process moves to S806, and if the measured tension is the same as or greater than 90N, the process moves to S807.

[0041] In S806, the rewind unit 305 adjusts the set rewind speed to be increased. This increases the rewind speed so that the measured tension falls within the allowable tension range. The amount by which the rewind speed is increased may be set automatically by the system based on the paper information, or it may be set by the user. Details of setting the adjustment amount when increasing the rewind speed (acceleration) will be described later. The rewind unit 305 then sets the rewind speed to the adjusted speed and controls the transport of the recording medium at the adjusted speed.

[0042] (Screen for setting the rewind speed) Figure 9 shows an example of a screen for setting the rewind speed adjustment amount. The rewind speed adjustment amount setting screen 900 is a UI screen displayed on the operation unit 118, which is controlled by the user I / F 207, and is used when the user sets the rewind speed adjustment amount. The rewind speed adjustment amount setting screen 900 includes an acceleration adjustment amount setting box 901, a deceleration adjustment amount setting box 902, and an OK button 903.

[0043] The acceleration adjustment amount setting box 901 accepts input for the adjustment amount during acceleration, which is when the user increases the rewind speed. The deceleration adjustment amount setting box 902 accepts input for the adjustment amount during deceleration, which is when the user decreases the rewind speed. When the OK button 903 is pressed by the user, the values ​​entered in the acceleration adjustment amount setting box 901 and the deceleration adjustment amount setting box 902 are confirmed.

[0044] The user sets the rewind speed adjustment amount by entering numerical values ​​in the acceleration adjustment amount setting box 901 and the deceleration adjustment amount setting box 902, respectively, and pressing the OK button 903. During rewind speed adjustment, the rewind speed set in S404 is increased or decreased by the amount of the set rewind speed adjustment. The user can also arbitrarily set the interval for the rewind speed adjustment process in S405.

[0045] Returning to the explanation of Figure 8, in S807, the rewind speed calculation unit 304 determines whether rewinding is complete. If it determines that rewinding is not complete (NO in S807), the process returns to S801. If it determines that rewinding is complete (YES in S807), the process ends as shown in Figure 8. For example, in the process of Figure 4, the rewind amount is set to 30m, so if the rewind amount is less than 30m, the process returns to S801, and if the rewind amount is the same as 30m, the process ends as shown in Figure 8. The rewind amount may be a measurement result obtained by measuring with a sensor (not shown), or it may be a calculation result obtained from the rotation speed of the roller.

[0046] Returning to the explanation of Figure 4, in S406, the rewind result acquisition unit 306 acquires the amount of misalignment of the recording medium when the rewind process is complete. The acquired amount of misalignment of the recording medium is used to adjust the position of the recording medium when printing resumes. After completing the process in S406, the flow shown in Figure 4 is completed.

[0047] By going through the above process, it becomes possible to perform the rewind process at an appropriate rewind speed corresponding to the type of recording medium.

[0048] As described above, this embodiment reduces the risk of damage to the recording medium or paper jams occurring when rewinding is performed, and shortens the time until the recording medium can be transported again. Therefore, it is possible to suppress the decrease in productivity when the recording medium is transported in the opposite direction to the transport direction during printing.

[0049] The above describes the case in which factor information including characteristic information of the recording medium and environmental information of the printing device is acquired, but it is not limited to this. The factor information may also be characteristic information of the recording medium. In this case, for example, a table that associates the characteristic information of the recording medium with the reverse transport speed (rewind speed) is used when determining the rewind speed. The factor information may also be environmental information of the printing device. In this case, for example, a table that associates the environmental information of the printing device with the reverse transport speed (rewind speed) is used when determining the rewind speed. The factor information may be at least one of the characteristic information of the recording medium and the environmental information of the printing device. In this case, for example, a table that associates the information acquired as factor information with the reverse transport speed (rewind speed) is used when determining the rewind speed.

[0050] The above describes a case where the characteristic information of the recording medium includes information indicating the type of recording medium and information indicating the basis weight of the recording medium, but it is not limited to this. The characteristic information of the recording medium may also include information indicating the type of recording medium. In this case, for example, a table that associates information indicating the type of recording medium with the reverse transport speed (rewind speed) is used when determining the rewind speed. The characteristic information of the recording medium may also include information indicating the basis weight of the recording medium. In this case, for example, a table that associates information indicating the basis weight of the recording medium with the reverse transport speed (rewind speed) is used when determining the rewind speed. The characteristic information of the recording medium may include at least one of the information indicating the type of recording medium and information indicating the basis weight of the recording medium. In this case, for example, a table that associates the acquired information with the reverse transport speed (rewind speed) is used when determining the rewind speed.

[0051] The above describes cases where the environmental information of a printing device includes information indicating the ambient temperature of the printing device and information indicating the ambient humidity of the printing device, but is not limited to this. The environmental information of a printing device may also include information indicating the ambient temperature of the printing device. In this case, for example, a table that associates information indicating the ambient temperature of the printing device with the reverse transport speed (rewind speed) is used when determining the rewind speed. The environmental information of a printing device may also include information indicating the ambient humidity of the printing device. In this case, for example, a table that associates information indicating the ambient humidity of the printing device with the reverse transport speed (rewind speed) is used when determining the rewind speed. The environmental information of a printing device may include at least one of the information indicating the ambient temperature of the printing device and information indicating the ambient humidity of the printing device. In this case, a table that associates the acquired information with the reverse transport speed (rewind speed) is used when determining the rewind speed.

[0052] <<Other Embodiments>> This disclosure can also be implemented by supplying a program that implements one or more of the functions of the above embodiments to a system or device via a network or storage medium, and by having one or more processors in the computer of that system or device read and execute the program. It can also be implemented by a circuit (e.g., an ASIC) that implements one or more functions. Furthermore, the program may be recorded on a recording medium readable by a computer and provided.

[0053] This embodiment includes the following configuration examples.

[0054] (Composition 1) A printing apparatus that performs printing while transporting a roll-shaped recording medium, A transport means for transporting the recording medium, An acquisition means for acquiring information on factors that may affect the tension when transporting the recording medium, A control means for controlling the transport means to transport the recording medium in the opposite direction to the transport direction when printing is performed at a speed determined based on the factor information, A printing apparatus characterized by having the following.

[0055] (Configuration 2) The control means controls the transport means to transport the recording medium at a speed determined based on a table that associates the factor information with the transport speed in the opposite direction. The printing apparatus according to configuration 1, characterized in that it is a printing apparatus.

[0056] (Composition 3) The control means adjusts the speed when transporting the recording medium in the reverse direction so that the tension measured using the tension measuring means falls within the allowable tension range of the recording medium. A printing apparatus according to configuration 1 or 2, characterized by the above.

[0057] (Composition 4) The control means controls the transport means to reduce the speed if the measured tension is greater than the allowable tension of the recording medium. The printing apparatus according to configuration 3, characterized in that it is a printing apparatus.

[0058] (Composition 5) The printing apparatus according to configuration 4, characterized in that the control means controls the transport means to reduce the speed by a set adjustment amount.

[0059] (Composition 6) The control means controls the transport means to increase the speed if the measured tension is less than the allowable tension of the recording medium. A printing apparatus according to any one of configurations 3 to 5, characterized by the above.

[0060] (Composition 7) The printing apparatus according to configuration 6, characterized in that the control means controls the transport means to increase the speed by a set adjustment amount.

[0061] (Composition 8) The control means controls the transport means to adjust the speed at predetermined intervals or for tension changes of predetermined magnitude. A printing apparatus according to any one of configurations 3 to 7, characterized by the above.

[0062] (Composition 9) The control means controls the transport means to adjust the speed until the transport in the reverse direction is completed. A printing apparatus according to any one of configurations 3 to 8, characterized by the above.

[0063] (Composition 10) The system further includes a display control means that displays a UI screen for setting the amount of speed adjustment on the display means, The control means controls the transport means to adjust the speed by an adjustment amount set via the UI screen displayed on the display means. A printing apparatus according to any one of configurations 3 to 9, characterized by the above.

[0064] (Composition 11) The aforementioned factor information is characteristic information of the recording medium. A printing apparatus according to any one of configurations 1 to 10, characterized by the above.

[0065] (Composition 12) The aforementioned factor information is the environmental information of the printing device. A printing apparatus according to any one of configurations 1 to 10, characterized by the above.

[0066] (Composition 13) The aforementioned factor information is at least one of the characteristic information of the recording medium and the environmental information of the printing apparatus. A printing apparatus according to any one of configurations 1 to 10, characterized by the above.

[0067] (Composition 14) The characteristic information is information relating to the type of recording medium. A printing apparatus according to configuration 11 or 13, characterized by the above.

[0068] (Composition 15) The characteristic information is information relating to the basis weight of the recording medium. A printing apparatus according to configuration 11 or 13, characterized by the above.

[0069] (Composition 16) The characteristic information is information relating to at least one of the type of recording medium and the basis weight of the recording medium. A printing apparatus according to configuration 11 or 13, characterized by the above.

[0070] (Composition 17) The aforementioned environmental information is information relating to the ambient temperature of the printing apparatus. A printing apparatus according to configuration 12 or 13, characterized by the above.

[0071] (Composition 18) The aforementioned environmental information is information relating to the ambient humidity of the printing apparatus. A printing apparatus according to configuration 12 or 13, characterized by the above.

[0072] (Composition 19) The aforementioned environmental information is information relating to at least one of the ambient temperature of the printing apparatus and the ambient humidity of the printing apparatus. A printing apparatus according to configuration 12 or 13, characterized by the above.

[0073] (Composition 20) It has a transport means for transporting roll-shaped recording media, A control method for a printing apparatus that performs printing while transporting the aforementioned recording medium, An acquisition step to acquire information on factors that may affect the tension when transporting the recording medium, A control step that controls the transport means to transport the recording medium in the opposite direction to the transport direction when printing is performed at a speed determined based on the factor information, A method for controlling a printing apparatus, characterized by including the following:

[0074] (Composition 21) A program that causes a computer to perform the actions described in configuration 20.

Claims

1. A printing apparatus that performs printing while transporting a roll-shaped recording medium, A transport means for transporting the recording medium, An acquisition means for acquiring information on factors that may affect the tension when transporting the recording medium, A control means for controlling the transport means to transport the recording medium in the opposite direction to the transport direction when printing is performed at a speed determined based on the factor information, A printing apparatus characterized by having the following.

2. The control means controls the transport means to transport the recording medium at a speed determined based on a table that associates the factor information with the transport speed in the opposite direction. The printing apparatus according to feature 1.

3. The control means adjusts the speed when transporting the recording medium in the reverse direction so that the tension measured using the tension measuring means falls within the allowable tension range of the recording medium. The printing apparatus according to feature 1.

4. The control means controls the transport means to reduce the speed if the measured tension is greater than the allowable tension of the recording medium. The printing apparatus according to feature 3.

5. The printing apparatus according to claim 4, characterized in that the control means controls the transport means to reduce the speed by a set adjustment amount.

6. The control means controls the transport means to increase the speed if the measured tension is less than the allowable tension of the recording medium. The printing apparatus according to feature 3.

7. The printing apparatus according to claim 6, characterized in that the control means controls the transport means to increase the speed by a set adjustment amount.

8. The control means controls the transport means to adjust the speed at predetermined intervals or for tension changes of predetermined magnitude. The printing apparatus according to feature 3.

9. The printing apparatus according to claim 3, characterized in that the control means controls the transport means to adjust the speed until the transport in the reverse direction is completed.

10. The system further includes a display control means that displays a UI screen for setting the amount of speed adjustment on a display means. The control means controls the transport means to adjust the speed by an adjustment amount set via the UI screen displayed on the display means. The printing apparatus according to feature 3.

11. The aforementioned factor information is characteristic information of the recording medium. The printing apparatus according to feature 1.

12. The aforementioned factor information is the environmental information of the printing device. The printing apparatus according to feature 1.

13. The aforementioned factor information is at least one of the characteristic information of the recording medium and the environmental information of the printing apparatus. The printing apparatus according to feature 1.

14. The characteristic information is information relating to the type of recording medium. The printing apparatus according to claim 11 or 13.

15. The characteristic information is information relating to the basis weight of the recording medium. The printing apparatus according to claim 11 or 13.

16. The characteristic information is information relating to at least one of the type of recording medium and the basis weight of the recording medium. The printing apparatus according to claim 11 or 13.

17. The aforementioned environmental information is information relating to the ambient temperature of the printing apparatus. The printing apparatus according to claim 12 or 13.

18. The aforementioned environmental information is information relating to the ambient humidity of the printing apparatus. The printing apparatus according to claim 12 or 13.

19. The environmental information is information relating to at least one of the ambient temperature of the printing apparatus and the ambient humidity of the printing apparatus. The printing apparatus according to claim 12 or 13.

20. It has a transport means for transporting roll-shaped recording media, A control method for a printing apparatus that performs printing while transporting the aforementioned recording medium, An acquisition step to acquire information on factors that may affect the tension when transporting the recording medium, A control step that controls the transport means to transport the recording medium in the opposite direction to the transport direction when printing is performed at a speed determined based on the factor information, A method for controlling a printing apparatus, characterized by including the following:

21. A program for causing a computer to perform the method described in claim 20.

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