Image reading device, control method for image reading device

The image reading apparatus addresses user misplacement errors by displaying warnings on a network-connected display, enhancing scanning precision.

JP2026088626APending Publication Date: 2026-05-29CANON KK

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
CANON KK
Filing Date
2024-11-19
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Users may misoperate the placement of documents in image reading apparatuses with different reference positions, leading to incorrect scanning results.

Method used

An image reading apparatus with a communication unit, document table, and display unit that connects to a network, displaying warnings about the reference position when other devices with different placements are present.

Benefits of technology

Reduces user errors by providing visual cues and warnings to ensure correct document placement, thereby improving scanning accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026088626000001_ABST
    Figure 2026088626000001_ABST
Patent Text Reader

Abstract

When multiple image reading devices are present on the network, users may make mistakes during the reading process. [Solution] The image reading device comprises a communication means for connecting to a network, a document table having a first reference position as a reference position for placing the document against, a reading means for reading the document on the document table while scanning in the scanning direction, and a display means. If other image reading devices are present in the network, the display means is configured to display a warning regarding the reference position.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to an image reading apparatus, a control method thereof, and a program.

Background Art

[0002] In an image reading apparatus that reads a document placed on a document table, a technique of displaying a document arrangement method on a display device so that a user can correctly perform a reading operation is described in Patent Document 1.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, depending on the image reading apparatus, there are also apparatuses with different reference positions for placing the document. Therefore, there is a possibility that the user may misoperate the placement of the document.

[0005] In view of such circumstances, an object of the present invention is to provide a technique for reducing user misoperations.

Means for Solving the Problems

[0006] In order to solve the above-described problems, an image reading apparatus according to the present invention includes a communication unit that connects to a network, a document table having a first reference position as a reference position for abutting a document, a reading unit that reads the document on the document table while scanning in a scanning direction, and a display unit, and when another image reading apparatus exists in the network, the image reading apparatus is characterized in that it displays a warning regarding the reference position on the display unit.

Effects of the Invention

[0007] According to the present invention, when other image reading devices are present in the network, it is possible to reduce user errors by displaying a warning regarding the reference position of the original document. [Brief explanation of the drawing]

[0008] [Figure 1] This is a diagram showing the configuration of the reading system according to Embodiment 1 of the present invention. [Figure 2] This is an external view of the image reading device of Embodiment 1 of the present invention. [Figure 3] This is a block diagram of the image reading device of Embodiment 1 of the present invention. [Figure 4] This is a top view of the document tray of the MFP100a according to Embodiment 1 of the present invention. [Figure 5] This is a top view of the document tray of the MFP100b according to Embodiment 1 of the present invention. [Figure 6] This flowchart shows the processing details during the reading operation in Embodiment 1 of the present invention. [Figure 7] This figure shows an example of a guide display shown on the operation panel 400 of Embodiment 1 of the present invention. [Figure 8] This is a diagram showing an example of a warning display on the operation panel 400 of Embodiment 1 of the present invention. [Figure 9] This flowchart shows the processing details during the reading operation in Embodiment 2 of the present invention. [Figure 10] This figure shows an example of what happens when the reading operation of Embodiment 2 of the present invention is performed incorrectly. [Figure 11] This figure shows an example of an image obtained when the reading operation of Embodiment 2 of the present invention is performed incorrectly. [Figure 12] This is a diagram illustrating an example of how to notify that the operation method displayed on the operation panel 400 of Embodiment 2 of the present invention is different. [Figure 13] This flowchart shows the processing details during the reading operation in Embodiment 3 of the present invention. [Figure 14] This is a diagram illustrating an example of history information in Embodiment 3 of the present invention. [Modes for carrying out the invention]

[0009] Hereinafter, embodiments of the present invention will be described in detail. Note that the components described in this embodiment are examples of the form of the present invention, and the scope of the present invention is not limited only to them.

[0010] <Example 1> Hereinafter, a reading system according to the present invention will be described.

[0011] FIG. 1 is a diagram showing the configuration of a reading system 1000 which is an embodiment of the present invention. A multi-functional printer which is an image forming apparatus equipped with a scanner, that is, a multi-functional printer will be described as an example. Hereinafter, it will be referred to as an MFP (image reading apparatus).

[0012] The reading system has a device group 1002 including a plurality of MFPs 100a, 100b, 100c connected via a local area network 1001 and a PC terminal 1006 such as a personal computer. The local area network 1001 is connected to the Internet 1004 via a router 1003. A server 1005 is provided on the Internet 1004. In FIG. 1, only one PC terminal 1006 is shown, but a plurality of PC terminals 1006 may be connected. Also, although the example shows that the server 1005 is installed on the Internet 1004, a configuration installed on the local area network 1001 may be used.

[0013] FIG. 2 is an external view of the MFP 100a as seen from the right front side as an example. An operation panel 400 (display means) as an operation unit for receiving an operator's operation is provided on the front side of the apparatus (the left front side in FIG. 2). The operation panel 400 has a physical switch 401 such as a start button and a display unit 402 such as a liquid crystal screen capable of displaying various information and performing touch operations.

[0014] The MFP100a is configured to incorporate a printing mechanism 200 and a reading mechanism 300 into one housing so as to be able to execute composite functions such as a copying function.

[0015] In the printing mechanism 200, ink remaining amount display parts 202a and 202b for displaying the remaining amount of ink used for printing are arranged. The ink remaining amount display part 202a on the right side of the MFP100a indicates the remaining amount of yellow, magenta, and cyan color inks, and the ink remaining amount display part 202b on the left side indicates the remaining amount of black ink.

[0016] Also, on the front surface of the MFP100a, a USB terminal 101 for connecting a PC terminal 1006 or the like is provided.

[0017] The cassette 203 can accommodate a plurality of sheets, and the plurality of sheets are supported in a stacked state within the cassette 203. The cassette 203 can be inserted into and pulled out from the housing 210 of the printing mechanism 200. The pulling-out direction of the cassette 203 is the front side of the apparatus. That is, when storing sheets in the cassette 203, the cassette 203 is pulled out to the front side of the apparatus. For this purpose, a cassette gripping part 203a for an operator to grip by hand and pull out the cassette 203 is provided on the front side of the apparatus of the cassette 203.

[0018] The discharge tray 209 can be inserted into and pulled out from the housing 210. The pulling-out direction of the discharge tray 209 is the front side of the apparatus. For this purpose, a discharge tray gripping part 209a for an operator to grip by hand and pull out the discharge tray 209 is provided on the front side of the apparatus of the discharge tray 209.

[0019] Next, the reading mechanism 300 will be described. The reading mechanism 300 includes an ADF (Automatic DocumentFeeder) housing 310 as an automatic document transport device, a document glass 302 (see Figures 4 and 5), a pressure plate 303 as a document holder, two hinge parts 304 as a rotating support part (see Figures 4 and 5), and a reading unit 301 (see Figures 4 and 5). The reading mechanism 300 can perform two methods: one in which the document is transported by the ADF housing 310 while the reading unit 301 (see Figures 4 and 5) reads the image of the document; and the other in which the document is placed on the document glass 302, the pressure plate 303 presses the document against the document glass 302, and the reading unit 301 (reading means) is moved to read the image of the document.

[0020] The reading mechanism 300 is located above the printing mechanism 200, and an operation panel 400 is provided on the front of the device. The reading mechanism 300 consists of a reading-side housing 330a that houses a reading unit, and an ADF housing 310 that has a document tray 332 and is provided above it so as to be openable and closable by a hinge.

[0021] Furthermore, in the ADF housing 310, a gripping portion 323 is provided at the front end of the pressure plate portion 303, which is capable of gripping the pressure plate portion 303 to rotate it from the closed position to the open position. The gripping portion 323 is a recess formed on the front end face of the pressure plate portion 303 so that the operator can reach in and lift the pressure plate portion 303 to rotate it to the open position. The gripping portion 323 has a notch 323a that is cut out downwards in a part of the front end of the sub-tray 322. Below the notch 323a is the document output tray 318. By reaching into the notch 323a, it is possible to grip the output tray gripping portion 318a.

[0022] The document feeding tray 320, which serves as a document support unit, is positioned so that at least a portion of it can slide toward the front of the device relative to the housing 330 on the ADF housing 310 side of the reading mechanism 300. The document rapid feed tray 320 includes a main tray (not shown) as a first support unit having a first support surface (not shown) that supports the document downstream of the sub-tray 322, and a sub-tray 322 as a sliding support unit and a second support surface 322a that supports the document together with the first support surface.

[0023] Figure 3 is a block diagram showing the configuration of the control system of the MFP100a. The MFP100a consists of a main board 510 that controls the entire device and various units connected to the main board 510. The microprocessor-type CPU 511 located on the main board 510 operates according to the control program stored in the ROM-type program memory 513, which is connected via the internal bus 512, and the contents of the RAM-type data memory 514. The CPU 511 controls the reading mechanism 300 via the reading mechanism control circuit 517 to read a document and store the read image data as image data information in the data memory 514. The CPU 511 also controls the printing mechanism 200 via the printing mechanism control circuit 516 to print the image data in the data memory 514 onto a recording medium. The CPU 511 controls the operation control circuit 518 to display the status of the MFP and function selection menus on the operation panel 400, and to accept operations from the user. The CPU 511 operates the interface 500 via the interface control circuit 519 and can communicate with other terminal devices connected by interface cables. The CPU 511 operates the network connection unit 600 (communication means) via the network control circuit 520, enabling it to connect to the internet 1004 and the local network 1001 and communicate with other devices and servers 1005.

[0024] Figure 4 is a top view of the document tray 332 of the MFP100a. The document tray 332 is configured to be horizontal on the top surface of the reading-side housing 330a, with the top being the rear side of the reading mechanism 300 and the bottom being the front side of the reading mechanism 300.

[0025] A document glass 302 on which the document 306 is placed is provided in the center of the document glass 332. The reading unit 301 moves back and forth in the scanning direction (arrow direction) behind the document glass 302 to read the document 306 placed on the document glass 302. Two hinge parts 304 are provided on the left and right sides of the rear of the document glass 332, and a pressure plate part 303 (cover part), which serves as a document holding surface (not shown), is connected via the hinges and opens and closes relative to the document glass 302 around the hinges.

[0026] A reference position 309a (first reference position) for placing the document 306 on the document glass 302 is located at the back left, and a reference position indicator is printed or engraved on the top surface of the document glass 332. A first stopper 305 is provided on the back edge of the document glass 302. A second stopper 307 is provided on the left edge of the document glass 302. The first stopper 305 is provided for positioning the document 306 in the front-to-back direction, and the second stopper 307 is provided for positioning the document 306 in the left-to-right direction.

[0027] The outer surfaces of the first stopper portion 305 and the second stopper portion 306 are printed or engraved with size indicators 310 that show the edge positions according to various document sizes. In this figure, an example is shown in which indicators for standard paper sizes such as Letter (LTR in the figure), A4, B5, and A5 are provided.

[0028] Figure 5 shows a top view of the document tray 332 of the MFP100b (another image reading device). Compared to the MFP100a, the reference position for placing the document 306 is different. In Figure 4, it is placed in the back left of the document glass 302, but in Figure 5, the reference position 309b (second reference position) for placing the document 306 is located in the front right of the document glass 302. Therefore, when using the MFP100b after using the MFP100a, it is possible that the document 306 may be mistakenly placed in the back left. If the document 306 is placed in the wrong position, correct scanning may not be performed, and the user may not obtain the desired scanning result.

[0029] Figure 6 is a flowchart showing the processing steps of the CPU 511 of the MFP100a during a copy operation. Although the explanation uses the MFP100a as an example, the process is similar for the other MFP100b and MFP100c models.

[0030] In step S601, the CPU 511 (determination means) determines whether or not multiple models are present. If multiple models are not present, the process proceeds to step S602; if multiple models are present, the process proceeds to step S604.

[0031] In step S601, the CPU 511 determines that multiple models are present if it detects multiple models within the same network. The conditions for this determination are not limited to those described above; any conditions that indicate the presence of multiple models are acceptable. For example, the CPU 511 could obtain purchase history from the MFP 100 sales company's server via the internet 1004, and determine that multiple models are present if the user has a purchase history of different models. Alternatively, the determination could be made by detecting other MFPs within the local area network 1001 via the network connection unit 600. Furthermore, information indicating the presence of multiple models could be obtained from a server connected to the local area network 1001.

[0032] In step S602, the CPU 511 displays an operating guide (normal display) on the control panel 400.

[0033] Figure 7 shows an example of an operating guide displayed on the control panel 400, illustrating the reference position for placing the document 306 on the document glass 332. Figure 7(a) shows the operating method for MFP100a, and Figure 7(b) shows the operating method for MFP100b. Since the reference position for MFP100a is the back left, the display in Figure 7(a) is made clear to the user that the reference position is the back left. Similarly, since the reference position for MFP100b is the front right, the display in Figure 7(b) is made clear to the user that the reference position is the front right. Pressing the OK button in Figure 7 proceeds to step S603.

[0034] In step S603, the MFP100a performs a copy operation. The CPU511 performs the copy operation by controlling the reading mechanism 300 via the reading mechanism control circuit 517 to read the original document 306, and then controlling the printing mechanism 200 via the printing mechanism control circuit 516 to print it onto the recording medium. Alternatively, after the OK button is pressed in S602, an opening / closing sensor (not shown) may be used to detect whether the pressure plate section 303 has been opened or closed, and then proceed to S603.

[0035] If it is determined in step S601 that multiple models are present, the process proceeds to step S604. In step S604, the CPU 511 determines whether there are any models with different operating methods (document placement positions). For example, the CPU 511 may receive information from the server 1005 of the MFP 100 sales company via the internet 1004 to see if there is at least one model among the multiple models with a different document placement position in the past purchase history. Alternatively, a list of MFP model information and information regarding placement positions may be stored in the non-volatile memory 515, and model information of other MFPs may be obtained via the server 1005 or local area network 1001 and compared with the list to make a determination. If it is determined in step S604 that there are models with different placement positions, the process proceeds to step S605; if the operating methods of all multiple models are the same, the process proceeds to step S602.

[0036] In step S605, the CPU 511 displays a warning (highlighted) on the control panel 400 to inform the user that there are models with different operating methods. Figure 8 is an example of a display that notifies the user that caution is required when performing reading operations because there are models with different operating methods. In this embodiment, the user moves to step S602 when they press the "Next" button in Figure 8. When the user presses the "Next" button in Figure 8, they can recognize that caution is required when performing reading operations, thus reducing the possibility of performing incorrect reading operations. Step S605 may also be performed after the opening / closing sensor (not shown) detects that the pressure plate section 303 has been opened.

[0037] In this embodiment, we have shown an example of displaying that there are multiple models with different operating methods, as shown in Figure 8. However, any display method that warns users to avoid making mistakes in the operating method is acceptable. Also, if it is determined in step S601 that multiple models exist, the processing flow may be to execute steps S601 to S605 without executing step S604.

[0038] As described above, according to this embodiment, when image reading devices with different reading operations are mixed together, it is possible to reduce the possibility of users making mistakes in the reading operation by displaying a message that informs the user that caution is required during the reading operation.

[0039] <Example 2> Example 1 shows an example of displaying a message to inform the user that caution is required during reading operations when MFP100 units with different reading operations are mixed together. Example 2 shows an example of displaying a message to warn the user if they perform an incorrect reading operation.

[0040] The system configuration of this embodiment is the same as that of Embodiment 1, and the same processes as in Embodiment 1 will not be explained.

[0041] Figure 9 is a flowchart showing the processing details of the CPU 511 of the MFP100a during the copy operation in this embodiment.

[0042] In step S901, the CPU 511 displays an operating guide on the operation panel 400. The process is the same as in step S602 of Embodiment 1. Step S901 may be displayed when the opening / closing sensor detects that the panel is open or closed.

[0043] In step S902, CPU 511 determines whether multiple models are present. If multiple models are not present, the process proceeds to step S903; if multiple models are present, the process proceeds to step S904. The processing is the same as in step S601 of Example 1.

[0044] In step 903, the MFP100a performs a copy operation. The process is the same as in step S603 of Example 1.

[0045] In step S904, the CPU 511 determines whether there are any models with different operating methods. If at least one model has a different operating method among the multiple models, the process proceeds to step S905. If all the models have the same operating method, the process proceeds to operation step S903. The processing is the same as in step S604 of Example 1. Note that steps S902 and S904 may be configured so that the process proceeds to step S905 only if either of them is judged as YES.

[0046] In step S905, the CPU 511 determines whether the user is performing an incorrect operation. If it determines that the user is performing a correct operation, the process proceeds to step S903; otherwise, it proceeds to step S906.

[0047] In step S905, the CPU 511 (determination means) controls the reading mechanism 300 via the reading mechanism control circuit 517 to perform a pre-scan operation that reads a portion of the original document 306 before performing the reading operation for copying. By analyzing the obtained pre-scan image, it is determined whether the original document 306 is correctly placed on the document table. For example, in an MFP 100a where the reference position is the back left, if the original document 306 is incorrectly placed in front of the reference position to the front right as shown in Figure 10 and the pre-scan operation is performed, a pre-scan image 1100 will be obtained with margins 1101 at the top and left, as shown in Figure 11. Therefore, the CPU 511 can determine whether the original document 306 is correctly placed on the document table by analyzing the obtained pre-scan image. Furthermore, it is not necessary to perform the pre-scan operation on the entire document; it is also acceptable to perform the pre-scan operation only on a predetermined range from the scan start position, within which the pre-scan image can be analyzed. In this case, it is possible to determine whether the document is not placed in the predetermined reference position based on whether the margin position of the obtained pre-scan image is on the top, left, or both.

[0048] In step S906, the CPU 511 displays a guide on the control panel 400 to inform the user that the operation method is different.

[0049] Figure 12 shows an example of a confirmation display that prompts the user to check the position of document 306 because the operation method is different. In this embodiment, when the user presses the "Next" button in Figure 12, the process proceeds to step S903.

[0050] As described above, according to this embodiment, if it is determined that the user has performed an incorrect reading operation, a message is displayed to inform the user that caution is required during the reading operation. Therefore, if the user performs the reading operation correctly, the message indicating that caution is required during the reading operation will not be displayed, and the user can perform the reading operation.

[0051] Furthermore, a warning highlighting, such as that shown in step S605 of Figure 6, may be displayed before step S905. Also, the guide display in step S901 may be displayed after step S902 or after step S906.

[0052] <Example 3> Example 3 shows an example where a warning message is displayed only when it is determined that there is a high probability that the user will make a mistake in operation.

[0053] The system configuration of this embodiment is the same as that of Embodiment 1, and the same processes as in Embodiment 1 will not be explained.

[0054] Figure 13 is a flowchart showing the processing steps of the CPU 511 of the MFP100a during scanning.

[0055] In step S1301, CPU 511 determines whether multiple models are present. If multiple models are not present, the process proceeds to step S1302; if multiple models are present, the process proceeds to step S1305. The processing is the same as in step S601 of Example 1.

[0056] In step S1302, the CPU 511 displays an operating guide on the control panel 400. The process is the same as in step S602 of Example 1.

[0057] In step S1303, a scanning operation is performed. The CPU 511 controls the reading mechanism 300 via the reading mechanism control circuit 517 to scan the document 306 and transmits it as image data to the PC terminal 1006.

[0058] In step S1304, the CPU 511 updates the history information for each user. In this embodiment, the number of times a user has performed a scan operation is linked to the user information (user data) for each user to create the history information, and as shown in Figure 14, the number of read operations performed by each user is stored in the non-volatile memory 515 (storage unit) for each user (for each piece of user data). It is stored in the non-volatile memory 515. Alternatively, when using the MFP 100a, the user may be identified by entering a user ID and password into the operation panel 400 (acquisition unit). Furthermore, user information may be acquired from a PC terminal 1006 connected to the MFP 100a, or by equipping the MFP 100a with an authentication device such as an ID card containing user information and acquiring the information from the ID card.

[0059] In step S1305, the CPU 511 determines whether there are any models with different operating methods. If at least one model has a different operating method among the multiple models, the process proceeds to step S1306. If all the models have the same operating method, the process proceeds to operation step S1302. The processing is the same as in step S604 of Example 1.

[0060] In step S1306, the CPU 511 determines from the user-specific history information updated in step S1304 whether there is a high probability of making a reading error. If it determines that there is a low probability of making an error, the process proceeds to step S1302; if it determines that there is a high probability of making an error, the process proceeds to step S1307. In this embodiment, if the number of times the reading operation has been performed is less than or equal to a predetermined value, it is determined that there is a high probability of making an error because the user is not familiar with the reading operation of the MFP 100a.

[0061] In step S1307, the CPU 511 displays a guide on the control panel 400 to inform the user that there are models with different operating methods. The processing is the same as in step S605 of Example 1.

[0062] As described above, according to this embodiment, a warning message is displayed only when the number of readings of the MFP100a is low and it is determined that there is a high possibility that the user will make an error in operation. Therefore, users who are likely to perform the reading operation correctly can do so without the message being displayed.

[0063] In this embodiment, the likelihood of an error in the operation was determined based on the number of times the user performed the reading operation, but the method of determination is not limited to the above. For example, if it is detected that the user used MFP100b, which has a different reading operation than MFP100a, after using MFP100a, it may be determined that there is a high possibility of an error in the reading operation.

[0064] In the above example, MFP100a was used as a representative example, but the same applies to other MFPs such as MFP100b and c.

[0065] Furthermore, although the above embodiment has been described as an MFP, the device may also be one that does not have an ADF enclosure 310 or a printing mechanism 200.

[0066] The above embodiment includes the following configuration.

[0067] (Composition 1) A means of communication for connecting to a network, A document feeder having a first reference position as a reference position for placing the document, A reading means for reading the document on the document tray while scanning in the scanning direction, An image reading device comprising a display means, An image reading device characterized by displaying a warning regarding the reference position on the display means when other image reading devices are present within the network.

[0068] (Configuration 2) The image reading device according to Configuration 1, characterized in that, if the second reference position, which is the reference position of the other image reading device, is located at a different position from the first reference position, the display means displays the warning.

[0069] (Composition 3) The first reference position is located at the end of the document tray, The image reading device according to configuration 1, characterized in that when the second reference position, which is the reference position of the other image reading device, is located at an end different from the first reference position, the display means displays the warning.

[0070] (Composition 4) An image reading device according to any one of configurations 1 to 3, characterized in that it has a determination means for determining whether the other image reading device exists in the network based on information about the other image reading device obtained from the server via the communication means.

[0071] (Composition 5) It has an opening / closing sensor that detects the opening and closing of the cover portion that holds the document, The image reading device according to any one of configurations 1 to 4, characterized in that the display means displays when it detects that the cover portion is open or closed.

[0072] (Composition 6) The image reading device according to any one of configurations 1 to 5, characterized in that the display means displays information indicating the first reference position after displaying the warning.

[0073] (Composition 7) The system includes a determination means for determining whether the original document is located at the first reference position based on an image obtained by reading a portion of the original document. The image reading device according to any one of configurations 1 to 6, characterized in that, if it is determined that the original document is not present at the first reference position, the display means displays a confirmation prompt to confirm the position of the original document.

[0074] (Composition 8) The reading means has a storage unit that stores the number of times a reading operation has been performed, The image reading device according to any one of configurations 1 to 7, characterized in that the display means displays the confirmation display when the number of readings is less than or equal to a predetermined value.

[0075] (Composition 9) It has an acquisition unit that acquires user information, The storage unit stores the number of reads for each piece of user information. An image reading device according to any one of configurations 1 to 8, characterized in that it displays when the number of readings associated with the user information acquired by the acquisition unit is less than or equal to the predetermined value. [Explanation of symbols]

[0076] 100a,b,c MFP 200 Printing mechanism 300 Reading mechanism 400 Control Panel 500 interfaces 600 Network Connection Unit

Claims

1. A means of communication for connecting to a network, A document feeder having a first reference position as a reference position for placing the document, A reading means for reading the document on the document tray while scanning in the scanning direction, An image reading device comprising a display means, An image reading device characterized by displaying a warning regarding the reference position on the display means when other image reading devices are present within the network.

2. The image reading device according to claim 1, wherein if the second reference position, which is the reference position of the other image reading device, is located at a different position from the first reference position, the display means displays the warning.

3. The first reference position is located at the end of the document tray, The image reading device according to claim 1, characterized in that when the second reference position, which is the reference position of the other image reading device, is located at an end different from the first reference position, the display means displays the warning.

4. The image reading device according to claim 1, further comprising a determination means for determining whether the other image reading device exists within the network based on information about the other image reading device obtained from the server via the communication means.

5. It has an opening / closing sensor that detects the opening and closing of the cover portion that holds the document, The image reading device according to claim 1, characterized in that the display means displays when it detects whether the cover portion is open or closed.

6. The image reading device according to claim 1, characterized in that the display means displays information indicating the first reference position after displaying the warning.

7. The system includes a determination means for determining whether the original document is located at the first reference position based on an image obtained by reading a portion of the original document. The image reading device according to claim 1, characterized in that, if it is determined that the original document is not present at the first reference position, the display means displays a confirmation prompt to confirm the position of the original document.

8. The reading means has a storage unit that stores the number of times a reading operation has been performed, The image reading device according to claim 1, characterized in that the display means displays the confirmation display when the number of readings is less than or equal to a predetermined value.

9. It has an acquisition unit that acquires user information, The storage unit stores the number of reads for each piece of user information. The image reading device according to claim 8, characterized in that it displays when the number of readings associated with the user information acquired by the acquisition unit is less than or equal to the predetermined value.

10. The connection process for connecting to the network, A reading step of reading the document on the document table, which has a first reference position as a reference position to which the document is pressed while scanning in the scanning direction, A control method for an image reading device, comprising a display step of displaying a warning regarding the reference position on a display means when other image reading devices are present within the network.