Conveyor

Abstract

To provide a transport device capable of controlling transportation corresponding to a kind of a medium to be transported even though easiness in manually setting the medium is different according to a kind of the medium.SOLUTION: A transport device has a transport mechanism for transporting a manually set medium, and a control unit varying standby time before starting transportation of the medium.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a transport device. [Background technology]

[0002] A conveying device that conveys a manually inserted object is known. Patent Document 1 describes that the conveying of the object starts after the elapsed time from the instruction to start conveying reaches a predetermined waiting time. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-104178 A Summary of the Invention [Problem to be solved by the invention]

[0004] The ease of manually inserting a medium varies depending on the type of medium to be transported. Conventionally, transport control according to the type of medium has not been performed. [Means for solving the problem]

[0005] To achieve the above object, a transport device includes a transport mechanism that transports manually inserted media, and a control unit that changes the waiting time before starting to transport the media depending on the type of media. [Brief description of the drawings]

[0006] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] 11 is a timing chart for explaining a waiting time and a maximum value of a transport time for feeding paper. [Diagram 5]13 is a flowchart of a transport process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0007] Here, the embodiments of the present invention will be described in the following order. (1) Configuration of the multifunction device: (2)Transportation: (3) Other embodiments:

[0008] (1) Configuration of the multifunction device: 1 is a block diagram showing the configuration of a multifunction device 1 as a conveying device according to an embodiment of the present invention. The multifunction device 1 of this embodiment is larger than multifunction devices generally used at home or in an office, and reads a large-sized document (medium) such as A0 or A1 size to generate image data, and also prints on a large-sized print medium. The multifunction device 1 includes a controller 10, a UI unit 20, a reading unit 30, a printing unit 40, a communication unit 50, and a non-volatile memory 60.

[0009] The controller 10 includes a CPU, RAM, ROM, etc. (not shown), and executes programs recorded in the non-volatile memory 60 or ROM to control each section of the multifunction device 1. The controller 10 may be configured with a single chip or multiple chips. For example, an ASIC may be used as the processor instead of the CPU, or a configuration in which the CPU and the ASIC work together may be used. The UI section 20 outputs information to the user and also functions as a user interface that accepts operations from the user.

[0010] The reading unit 30 performs a scanning operation to read a manually-fed document (medium). The reading unit 30 includes a transport mechanism 31 and a sensor unit 32. In this embodiment, the document (medium) is set by manual feeding. The manually-fed document (medium) may have a variety of sizes, for example, large ones such as A0 size and small ones such as A4 size. FIGS. 2 and 3 are schematic diagrams showing the configuration of the transport mechanism 31. The transport mechanism 31 includes a paper feed roller 310, a medium set detection sensor 311, a medium size detection sensor 312, a thin paper detection sensor 313, a paper feed detection sensor 314, a skew sensor 315, a platform 316, and a transport roller (not shown).

[0011] The transport mechanism 31 transports the medium P that is manually inserted into an insertion slot formed in a housing (not shown) and discharges the medium P from a paper discharge slot. The direction in which the medium P is transported is called the transport direction. A platform 316 is provided at the insertion slot. The user manually sets the medium P by placing the leading end of the medium P on the platform 316, inserting the medium P from the insertion slot, and abutting the leading end of the medium P against the paper feed roller 310. FIG. 3 is a schematic diagram showing a state in which the medium P is set at the setting position for manual setting. The setting position for the medium P is the position at which the medium P is placed when the medium P is correctly set for manual insertion. At the setting position for the medium P, a medium setting detection sensor 311, a medium size detection sensor 312, and a thin paper detection sensor 313 are arranged.

[0012] The medium setting detection sensor 311 is provided at a predetermined distance K from the paper feed roller 310 in the transport direction and on the near side of the paper feed roller 310. In this embodiment, the medium setting detection sensor 311 has a mechanism that rotates from the state before the medium P passed when the leading edge of the medium P, which is inserted by a user through the insertion port and pushed toward the paper feed roller 310, comes into contact with the medium setting detection sensor 311 (see FIG. 2). When the medium setting detection sensor 311 detects this rotation, it outputs a signal indicating that the medium P has been set. When the controller 10 receives this signal, it can detect that the medium P has been manually set. The medium setting detection sensor 311 may be of a mechanical type as described above, or in other embodiments, it may be configured in a different manner, such as an optical type (such as a photointerrupter).

[0013] The medium size detection sensor 312 is a sensor for detecting the size of the medium P. As shown in FIG. 3, the medium size detection sensor 312 is provided in front of the paper feed roller 310 in the transport direction, at a predetermined distance K (the same distance as the distance between the medium setting detection sensor 311 and the paper feed roller 310) from the paper feed roller 310. Regardless of the size of the medium P in this embodiment, as shown in FIG. 3, one end in a direction perpendicular to the transport direction in the transport path is used as a reference, and the end of the medium P is set close to that end. On the outside of that end, for example, a document guide is provided to align the medium P. In FIG. 3, the end of the transport path on the right side in the drawing is the reference end.

[0014] The medium size detection sensor 312 is provided at a distance from the medium set detection sensor 311 in a direction perpendicular to the transport direction. The medium set detection sensor 311 is provided at a position where the medium of the smallest size to be set passes, and the medium size detection sensor 312 is provided at a position where the medium of the smallest size does not pass but the medium of a size larger than the default size passes. In this embodiment, the medium set detection sensor 311 is provided at the reference end side of the transport path, and the medium size detection sensor 312 is provided at the other end side of the transport path. In this embodiment, the medium size detection sensor 312 has the same mechanism as the medium set detection sensor 311, and when pressed by the leading edge of the medium P, it detects the rotation of the mechanism and outputs a signal indicating that the leading edge of the medium P has contacted. When the controller 10 receives a signal indicating that the leading edge of the medium has contacted not only from the medium set detection sensor 311 but also from the medium size detection sensor 312, it determines that the manually inserted medium is larger than the default size. If the controller 10 receives a signal from the medium loading detection sensor 311 but not from the medium size detection sensor 312, it determines that the manually loaded medium is a size smaller than the predetermined size.

[0015] Thin paper detection sensor 313 detects the thickness of the paper using ultrasonic waves. Thin paper detection sensor 313 is located at a predetermined distance K from paper feed roller 310 on the front side of paper feed roller 310 in the transport direction, near medium set detection sensor 311. When medium set detection sensor 311 detects that medium P has been set, thin paper detection sensor 313 detects the thickness of medium P and outputs a signal indicating the thickness. This signal enables controller 10 to determine whether medium P set manually is thinner than the predetermined thickness. Of course, paper thickness may be detected by other methods without using ultrasonic waves.

[0016] The paper feed roller 310 is driven by a motor (not shown) to rotate and transport the manually inserted medium P in the transport direction. The controller 10 controls the timing of starting and ending the drive of the motor, thereby controlling the rotation time of the paper feed roller 310 (the transport time for feeding paper). A paper feed detection sensor 314 is provided further forward of the paper feed roller 310 in the transport direction. In this embodiment, the paper feed detection sensor 314 has the same configuration as the medium set detection sensor 311. That is, when the paper feed detection sensor 314 detects that the leading edge of the medium P transported forward of the paper feed roller 310 by the paper feed roller 310 has arrived, the paper feed detection sensor 314 outputs a signal indicating that the medium P has been detected. When the controller 10 receives this signal, it can detect that the medium P has been fed by the paper feed roller 310.

[0017] The skew sensor 315 is provided in front of the paper feed roller 310 in the transport direction, and one on each side of the transport path in the direction perpendicular to the transport direction. The skew sensor 315 is a sensor for detecting that the medium P is skewed, and is provided at a position where the medium P can pass when it is skewed. In other words, when the medium P is transported perpendicularly without skew, the skew sensor 315 does not detect the medium P. The skew sensor 315 only needs to be able to detect that the medium P has passed, and may be configured as a mechanical type similar to the medium set detection sensor 311, or may be configured as an optical type. When the controller 10 acquires a signal indicating the detection of the medium P from at least one of the skew sensors 315, it determines that a skew error has occurred.

[0018] In the transport direction, a transport roller (not shown) is provided further forward of the paper feed detection sensor 314. The transport roller (not shown) transports the medium P transported by the paper feed roller 310 toward the paper discharge outlet. During this transport process, the medium P is read by the sensor unit 32, which will be described later.

[0019] The sensor unit 32 includes an image sensor and a light source, not shown. The light source irradiates light onto the reading surface of the transported medium P. The image sensor is, for example, a CIS, which detects reflected light from the medium P and outputs an electrical signal according to the amount of light detected. The sensor unit 32 obtains image data by converting the output electrical signal into a digital signal by a conversion circuit, not shown. The image data read from the medium P by the sensor unit 32 is output to the communication unit 50, the printing unit 40, and the non-volatile memory 60.

[0020] The communication unit 50 includes various communication interfaces for communicating with external devices via wired or wireless communication. The communication unit 50 also includes interfaces for communicating with various removable memories attached to the multifunction device 1. The image data read by the reading unit 30 may be output to an external device via the communication unit 50 or recorded in a removable memory.

[0021] The printing unit 40 prints on a print medium based on, for example, image data read by the reading unit 30, or print data received from a computer (not shown) via the communication unit 50. The printing unit 40 includes actuators, sensors, drive circuits, mechanical parts, and the like for printing on the print medium using various printing methods such as inkjet printing and electrophotography.

[0022] In this embodiment, the multifunction device 1 is configured to automatically feed the medium P as a read document after a standby time when it detects that the medium P has been manually set, and wait for the input of a scan start instruction when the feeding is completed. Then, when the scan start instruction is input, it is configured to read the medium P while transporting it. Specifically, when the medium set detection sensor 311 detects that the medium P has been set, the controller 10 waits for a predetermined standby time T1 to elapse as shown in FIG. 4, and after the standby time T1 has elapsed, rotates the paper feed roller 310 to start feeding. At this time, the controller 10 sets a maximum transport time (T2) for feeding the medium P, and rotates the paper feed roller 310 for feeding for a maximum of the time T2. While the paper feed roller 310 is being driven, that is, while the time T2 has not yet elapsed, the controller 10 waits for the paper feed detection sensor 314 to output a signal indicating that the medium P has been fed. When the signal is output from the paper feed detection sensor 314, the controller 10 determines that the medium P has been fed, temporarily stops the paper feed roller 310, and waits for a command to start scanning to be input by the user. When a command to start scanning is input by the user, the controller 10 drives a transport roller (not shown) to transport the medium P while reading it with the sensor unit 32.

[0023] On the other hand, if a signal indicating that medium P has been fed cannot be obtained from paper feed detection sensor 314 even after paper feed roller 310 has rotated for the maximum time T2 to feed the medium, it is determined that medium P is jammed by paper feed roller 310, or that medium P is not being transported because medium P is not in contact with paper feed roller 310, or that the leading edge of medium P has not reached the detection position of paper feed detection sensor 314 because pressing against paper feed roller 310 was delayed. These states are hereinafter referred to as paper feed errors.

[0024] Incidentally, the ease of manually inserting the medium P varies depending on the type of medium P. The type of medium P may be, for example, the size or thickness (hardness) of the medium P. When manually inserting a medium P that is difficult to manually insert, the user may insert the medium P into the insertion slot more carefully and over time than when manually inserting a medium P that is easy to manually insert. For example, a large-sized medium P may be inserted carefully and over time into the insertion slot in order to abut the leading edge of the medium P against the paper feed roller 310 while maintaining a posture perpendicular to the conveying direction. In addition, in the case of a thin and soft medium, when the medium P comes into contact with the mechanism of the mechanical medium setting detection sensor 311 or the medium size detection sensor 312, the leading edge of the medium P may bend, making it difficult to operate the mechanism. Therefore, the medium P may be inserted carefully and over time into the insertion slot so as not to bend.

[0025] As described above, the paper feed roller 310 is configured to start driving after the medium setting detection sensor 311 detects the medium P and after the waiting time T1 has elapsed. However, if the medium P is inserted over a longer time than usual because it is difficult to manually set the medium P, the leading edge of the medium P may not yet be abutted against the paper feed roller 310 between the time the medium setting detection sensor 311 detects the medium setting and the time the paper feed roller 310 starts to drive. If the leading edge of the medium P reaches the paper feed roller 310 after the paper feed roller 310 starts to rotate, the medium P will start to be transported with a delay. The maximum driving time (transport time for feeding) of the paper feed roller 310 is preset to a maximum value (T2), and the paper feed roller 310 stops once the time T2 has elapsed. If the leading edge of the medium P does not reach the paper feed detection sensor 314 within the time T2, a paper feed error occurs.

[0026] On the other hand, if the waiting time T1 is set to a uniformly long time in consideration of the fact that the medium P may be manually set over a long period of time, the waiting time T1 may become unnecessarily long for the user in the case of a medium that is easy to manually set. Furthermore, if the maximum transport time (T2) for feeding is made long, the possibility of damage to the medium P increases if a paper jam occurs (because the paper feed roller 310 continues to rotate up to the maximum value (T2) in a paper jam state). Therefore, in this embodiment, the controller 10 changes the waiting time T1 before starting to transport the medium and the maximum transport time (T2) for feeding depending on the type of medium. In this case, the controller 10 functions as a control unit.

[0027] Specifically, the controller 10 makes the standby time for large media longer than the standby time for small media. When the controller 10 receives a medium detection signal from both the medium set detection sensor 311 and the medium size detection sensor 312, it determines that the size of the set medium is large (the width in the direction perpendicular to the transport direction is large), and when the controller 10 receives a medium detection signal from the medium set detection sensor 311 but does not receive a medium detection signal from the medium size detection sensor 312, it determines that the size of the set medium is small. Then, the controller 10 sets the standby time T1 to a value longer than the default value for large media. Furthermore, the controller 10 sets the maximum transport time (T2) for feeding large media to a value longer than the default value.

[0028] Furthermore, the controller 10 makes the standby time for soft media longer than the standby time for hard media. The controller 10 determines whether the set medium is a thin and soft medium based on the output of the thin paper detection sensor 313. The controller 10 then sets the standby time T1 for thin (soft) media to a value longer than the default value. Furthermore, the controller 10 sets the maximum transport time (T2) for feeding thin (soft) media to a value longer than the default value.

[0029] Even if the output of the medium size detection sensor 312 does not determine that the medium size is large, or the output of the thin paper detection sensor 313 does not determine that the medium is thin, an error during transport, such as a paper feed error or a skew error, may occur. Therefore, the controller 10 makes the standby time for a medium with many errors during transport longer than the standby time for a medium with few errors during transport. In this embodiment, if a paper feed error or a skew error occurs two or more times in succession, the controller 10 determines that the medium is difficult for the user to manually insert, and sets the standby time T1 to a value longer than the default value. Furthermore, if a paper feed error or a skew error occurs two or more times in succession, the controller 10 sets the maximum transport time (T2) for feeding the medium to a value longer than the default value.

[0030] If none of the above three conditions (medium size is large, medium is thin, or an error has occurred two or more times in succession) is met, the controller 10 sets the waiting time T1 to a default value. If none of the above three conditions are met, the controller 10 sets the maximum transport time (T2) for transporting to a default value. In this embodiment, the default value for the waiting time T1 is 0.8 seconds, and the value longer than the default value is 1.2 seconds. The default value for the maximum transport time (T2) for feeding is 1 second, and the value longer than the default value is 5 seconds.

[0031] As described above, in this embodiment, the waiting time T1 is changed depending on the type of medium. When using a medium that is estimated to be difficult to manually set, the waiting time T1 and the maximum transport time (T2) for transport are made longer than the default value, making it possible to make paper feed errors less likely to occur. As a result, it is not necessary to manually set the medium again and again, improving user convenience. Also, when a user uses a medium that is estimated to be easy to manually set, reading can be performed with good response without unnecessary waiting time.

[0032] (2)Transportation: FIG. 5 is a flowchart showing the transport process. The transport process is started in response to the medium set detection sensor 311 detecting the setting of the medium P. When the transport process is started, the controller 10 judges whether the previous error occurred two or more times in succession (step S100). That is, the controller 10 judges whether the previous error occurred two or more times in succession when scanning a medium presumed to be the same medium, and a paper feed error or a skew error occurred, and the scan could not be completed. Therefore, errors that occurred more than a predetermined time (for example, 5 minutes) before the present may be excluded from the judgment. If it is judged in step S100 that the previous error occurred two or more times in succession, the controller 10 sets the waiting time T1 until the start of paper feed to 1.2 seconds, which is longer than the default value, and waits (step S130). When the waiting time T1 of 1.2 seconds has elapsed, the controller 10 subsequently sets the maximum transport time (T2) for paper feed to 5 seconds, which is longer than the default value, and starts driving the paper feed roller 310 (step S135). That is, the controller 10 drives a transport motor (not shown) to rotate the paper feed roller 310 .

[0033] If it is not determined in step S100 that the previous error occurred two or more times in a row, the controller 10 sets the waiting time T1 until the start of paper feeding to a default value of 0.8 seconds and waits (step S105). After the waiting time T1 of 0.8 seconds has elapsed, the controller 10 then determines whether the set medium is large or not (step S100). That is, the controller 10 determines that the set medium is large when the medium size detection sensor 312 also outputs a signal indicating medium detection. If it is determined in step S110 that the medium is large, the controller 10 waits an additional 0.4 seconds (step S125). That is, the waiting time T1 is 0.8 seconds waited in step S105 plus an additional 0.4 seconds, resulting in a total waiting time of 1.2 seconds, similar to step S130. Next, the controller 10 executes step S135.

[0034] If the medium is not determined to be large in step S110, the controller 10 determines whether the medium is soft or not (step S115). That is, the controller 10 obtains the thickness of the set medium based on the output of the thin paper detection sensor 313, and determines that the medium is soft if the medium is thinner than the default thickness. If the medium is determined to be soft in step S115, the controller 10 executes steps S125 and S135.

[0035] If the medium is not determined to be soft in step S115, the controller 10 sets the maximum conveying time (T2) for feeding to the default value of 1 second, and starts driving the feed roller 310 (step S120). That is, the controller 10 drives the conveying motor (not shown) to start rotating the feed roller 310.

[0036] After executing step S120 or step S135, controller 10 waits until paper feed roller 310 stops (step S140). In this embodiment, if medium P is detected by paper feed detection sensor 314, the driving of paper feed roller 310 is stopped even if the maximum value (T2) period has not elapsed. Also, if the maximum value (T2) period has elapsed without medium P being detected by paper feed detection sensor 314, the driving of paper feed roller 310 is stopped. Therefore, in step S140, it is determined whether or not these events have occurred.

[0037] If it is determined in step S140 that the feed rollers 310 have stopped, the controller 10 determines whether or not a feed error has occurred (step S145). That is, the controller 10 determines whether or not the medium P is not detected by the feed detection sensor 314 even when the feed rollers 310 are rotated for the maximum transport time (T2) set in step S120 or S135.

[0038] If it is determined in step S145 that a paper feed error has occurred, the controller 10 increments the number of errors (step S165) and has the user redo the paper feed (step S170). For example, the controller 10 prompts the user via the UI unit 20 to pull the medium out of the insertion slot and then reinsert it through the insertion slot to redo the manual insertion. Then, when it is determined that the output of the medium setting detection sensor 311 has once changed from a non-detection state to a detection state, the controller 10 returns to the process of step S100. Note that the initial value of the number of errors is 0, and the number of errors is incremented by 1 in step S165.

[0039] If it is not determined in step S145 that there is a paper feed error, the controller 10 starts driving the transport rollers in response to a scan start instruction (step S150). That is, when the user operates the UI unit 20 to input a scan start instruction, the controller 10 starts driving the transport rollers in response to the instruction. During this transport process, the sensor unit 32 reads the medium P, and the controller 10 acquires image data of the medium P. The controller 10 also determines whether a skew error has occurred during the transport process by the transport rollers (step S155). That is, while the transport rollers are being driven, the controller 10 monitors the output of the skew sensor 315, and determines whether a skew error has occurred from the output of the skew sensor 315.

[0040] If it is determined in step S155 that a skew error has occurred, the controller 10 executes steps S165 and S170. If a skew error has occurred, the controller 10 stops driving the transport rollers. The transport rollers are configured to stop when the transport of the entire medium has been completed and the medium has been discharged from the paper discharge port. If it is determined in step S155 that a skew error has not occurred, the controller 10 resets the number of errors (step S160).

[0041] (3) Other embodiments: The above embodiment is an example for implementing the present invention, and various other embodiments can be adopted. For example, the conveying device may be a scanner equipped with a scanning mechanism, a printer equipped with a printing mechanism, or a laminator equipped with a lamination mechanism. The present invention may also be applied to a document conveying device in a reading unit provided in a multifunction device, or to a print medium conveying device in a printing unit provided in a multifunction device. The medium to be conveyed in the conveying device may be paper, or may be an object made of various materials other than paper, such as plastic.

[0042] The transport mechanism may be any mechanism capable of transporting a manually inserted medium. The configurations of the feed rollers and transport rollers and the transport path described in the above embodiment are merely examples, and various other configurations may be adopted.

[0043] The type of medium may be determined in any manner. For example, a configuration may be adopted in which a user manually sets information in advance, such as the size of the medium, whether it is thin paper, the shape of the medium, the orientation of the medium, the material of the medium, etc., and the type of the medium is determined based on this setting. Alternatively, a configuration may be adopted in which the type of the medium is automatically obtained by a sensor, as in the above embodiment.

[0044] The form and arrangement of the sensor that detects information for identifying the type of medium may be configured in various ways other than those described in the above embodiment. The sensor for detecting skew error may also be provided in a position other than that described in the above embodiment. For example, in order to detect a skew error at the timing of paper feed, a skew sensor may be provided on the front side (medium set position) of the paper feed roller 310. If a skew error is detected during the process of manually setting the medium, the waiting time T1 may be extended. Also, for example, a configuration may be adopted in which a skew error is detected by a pre-scan using a reading sensor. Furthermore, errors related to media transport other than paper feed errors and skew errors may be detected, and in such cases, errors during transport may include errors other than paper feed errors and skew errors.

[0045] Also, the transport control may be changed according to the type of medium, and the type of medium to be focused on may be appropriately set according to the type of medium to be tolerated. For a medium that is difficult for a user to set, the waiting time T1 may be longer than for a medium that is easy to set. For example, all of the configurations of changing the transport control according to the size of the medium, changing the transport control according to the softness (thinness) of the medium, and changing the transport control according to the number of errors during transport may be adopted, or any one of them may be selected and adopted alternatively. Furthermore, in addition to or instead of these, it is possible to change the transport control according to other characteristics of the medium. Also, the change in the transport control may target both the waiting time T1 and the maximum transport time (T2) for paper feeding, or may target only the former. Also, the waiting time T1 and the maximum transport time (T2) may each be selected from two options according to the type of medium, or may be selected from three or more options. Also, if the type of medium changes continuously, these times (T1, T2) may be determined continuously. Furthermore, the type of media used by each user may be associated with the number of paper feed errors and stored, and the waiting time T1 and the maximum transport time for paper feed (T2) may be automatically selected and applied for each user based on this association.

[0046] Furthermore, as in the present invention, the present invention can be applied as a program or method executed by a computer. The above-mentioned system, program, and method may be realized as a single device or may be realized by using parts of multiple devices, and include various aspects. In addition, the present invention can be modified as appropriate, such as being partly software and partly hardware. Furthermore, the present invention can be realized as a recording medium of a program that controls the system. Of course, the recording medium of the program may be a magnetic recording medium or a semiconductor memory, and any recording medium developed in the future can be considered in the same way. [Explanation of symbols]

[0047] 1...multifunction device, 10...controller, 20...UI section, 30...reading section, 31...transport mechanism, 32...sensor unit, 40...printing section, 50...communication section, 60...non-volatile memory, 310...paper feed roller, 310...temporary paper feed roller, 311...media set detection sensor, 312...media size detection sensor, 313...thin paper detection sensor, 314...paper feed detection sensor, 315...skew sensor, 316...stand, P...media, T1...waiting time, T2...maximum transport time for paper feed

Claims

1. a transport mechanism for transporting a manually inserted medium; a detection unit that detects the setting of a manually inserted medium; The waiting time until the transport of the medium is started is changed according to the type of the medium. After the standby time has elapsed since the manual feed was detected, the manual feed A control unit that causes the transport mechanism to start feeding the medium. Equipped with The control unit extends the waiting time of the medium having a large number of errors during transport to a medium having a small number of errors during transport. the waiting time of the medium being longer than the waiting time of the medium not being Conveying device.

2. The control unit sets the standby time of the large medium to be longer than the standby time of the small medium. Also, make it longer. The conveying device according to claim 1 .

3. The control unit sets the waiting time of the soft medium to be longer than the waiting time of the hard medium. Also, make it longer. The conveying device according to claim 1 or 2.

4. A sensor is provided at a position where the medium is set, The control unit determines the type of the medium based on an output of the sensor. The conveying device according to any one of claims 1 to 3.

5. The control unit determines a maximum conveying time for feeding the medium according to the type of the medium. Change A conveying device according to any one of claims 1 to 4.

6. The control unit: The medium in which a paper feed error or a skew error has occurred two or more times in succession is The waiting time of the medium having a large number of errors during transport is set to the default. longer than the default value, A conveying device according to any one of claims 1 to 5.

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