Document reading device, control method thereof, and program

Abstract

To prevent, when documents with a plurality of different sizes are placed, a situation where a document is not conveyed due to the placement position of the document.SOLUTION: A document reading device of the present invention has display means and a placement part on which a plurality of documents are placed, and comprises conveying means that conveys the plurality of documents placed on the placement part, and reading means that reads the documents conveyed by the conveying means to generate image data. The display means displays information for urging placement of a document with a plurality of different sizes with the documents being aligned to the center of the placement part in a direction orthogonal to a direction in which the documents are conveyed by the conveying means, based at least on the fact that a mode for the reading means to read the documents in one job is set to the document reading device.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a document reading device, a control method thereof, and a program. [Background technology]

[0002] There is a document reading device that operates in a mixed reading mode in which multiple documents of different sizes placed on a document tray are transported one by one, the size of the transported documents is determined, and the documents are read at the determined size (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-350225 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the user sets the mixed scanning mode as described above, the user places a plurality of documents of different sizes on the document tray.

[0005] When multiple documents of different sizes are placed on the document tray, the width of the guide section on the document tray is adjusted to fit the largest document among the multiple documents of different sizes. Therefore, there is a possibility that a document that is smaller in width in the direction perpendicular to the document transport direction than the largest document may be placed against one side of the guide section on the document tray, which may cause the following problems.

[0006] For example, depending on the width of the document in the direction perpendicular to the document transport direction, the document may come into contact with the document placed on the document tray and not reach the rollers that transport the document, resulting in the document not being transported.

[0007] The present invention has been made in consideration of the above problems, and has an object to prevent a document from not being transported depending on the document placement position when a plurality of documents of different sizes are placed. [Means for solving the problem]

[0008] The document reading device of the present invention is a document reading device having a display means and a placement section for placing a plurality of documents, comprising: a conveying means for conveying the plurality of documents placed on the placement section; a reading means for reading the documents conveyed to the conveying means and generating image data; and a mode for at least the reading means to read documents of a plurality of different sizes in one job is set in the document reading device. and a mode for reading a document of a size not registered in the document reading device is set. The display means displays information encouraging the user to place the document in alignment with the center of the document placement section in a direction perpendicular to the direction of document transport by the transport means. Effect of the Invention

[0009] According to the present invention, when a plurality of documents of different sizes are placed, it is possible to prevent the documents from being unable to be transported depending on the placement position of the documents. [Brief description of the drawings]

[0010] [Figure 1] FIG. 13 is a diagram showing an example of a position where a document is placed on the document tray 30. [Diagram 2] FIG. 1 is a diagram showing an example of a paper feed roller 1 for transporting a document. [Diagram 3] FIG. 2 is a perspective view showing an example of an automatic document reading unit in the present embodiment. [Figure 4] 1 is a cross-sectional view of an automatic document reading unit according to a first embodiment of the present invention; [Diagram 5] FIG. 2 is a cross-sectional view showing an example of the ADF 200 and the document reading unit 100 in the present embodiment. [Figure 6] FIG. 6 shows an example of a home screen 600. [Figure 7] FIG. 13 is a diagram showing an example of a screen for notifying information [Figure 8]1 is a flowchart showing an example of a flow of screen display when a document reading device executes a reading process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the configurations shown in the following embodiments are merely examples, and the present invention is not limited to the configurations shown in the drawings. EXAMPLES

[0012] An example of the configuration of an automatic document reading unit in an embodiment of the present invention will be described with reference to the drawings. Fig. 3 is a perspective view showing an example of the automatic document reading unit in this embodiment. The automatic document reading unit in this embodiment is composed of a document reading unit 100 that reads a document, and an automatic document feeder (ADF) 200 that transports the document toward the document reading unit. The ADF 200 is connected to the document reading unit 100 by an opening / closing hinge provided on the rear side of the upper surface of the document reading unit 100 so as to be freely opened and closed.

[0013] <Configuration example of document reading unit 100> The document reading unit 100 will be described with reference to Fig. 4. Fig. 4 is a diagram showing an example of a cross section of the ADF 200 and the document reading unit 100 in this embodiment.

[0014] The document reading unit 100 has a document glass 101, a front surface reading unit 105, an optical motor 306 (not shown), and a reading movement guide 109. During document reading control, the document reading unit 100 reads a document placed on the document glass 101. Specifically, the front surface of the document placed on the document glass 101 is read line by line while the front surface reading unit 105 is moved along the reading movement guide 109 using the optical motor 306, thereby reading a document front surface read image. During flow reading control, the image of the document transported onto the front surface flow reading glass 102 by the ADF 200 is read by the front surface reading unit.

[0015] <Configuration example of automatic document feeder (ADF) 200> The ADF 200 will be described with reference to Fig. 4. The ADF 200 has a document tray 30, which is a placement section for placing a document stack S consisting of one or more documents, and a separation mechanism including a separation pad 21 and separation roller 2 that prevent the document stack S from protruding beyond the document tray 30 and advancing downstream, and a feed roller 1. The document tray 30 also has a document presence / absence detection sensor 10 that detects the presence or absence of a document, and further has a document tray size detection sensor 9 that determines the size of the document on the document tray.

[0016] The paper feed roller 1 is located near the center of the document tray 30 in the direction perpendicular to the document transport direction. Specifically, the location is within a range of 10 cm in the direction perpendicular to the document transport direction from a point that is the same distance from both guide parts a and b when the guide parts a and b are fully opened. This location is defined as approximately the center.

[0017] During the reading and transport of documents, in order to reliably transport the documents placed on the document tray 30, it is necessary to bring the document feed roller 1 into contact with the document stack S placed on the document tray 30 and apply an appropriate pressure to the contacting portion. To achieve this, the document tray 30 is raised to a certain height and the document feed roller 1 is pressed against the top surface of the document stack S placed on the document tray 30. In this state, the document feed roller 1 is rotated as shown in FIG. 2, whereby the topmost document of the document stack is transported. Of the documents transported by the document feed roller 1, the topmost sheet is separated and transported by the action of the separation pad 21 and separation roller 2. This separation is achieved by a known separation technique.

[0018] The original separated by the separation pad 21 and separation roller 2 is transported to the pull-out roller 3, which in turn transports it to the transport roller 4. A transport path is disposed downstream of the transport roller 4, which transports the original that has passed the transport roller 4 toward the front surface scanning glass 102. The original sent to the transport path is transported to the front surface reading position by the front surface reading transport roller 5 and the front surface reading upstream roller 51.

[0019] <Surface reading> The document conveyed to the front surface reading position passes between the front surface flow reading glass 102 and the front surface glass facing member 6, and is illuminated by the front surface LEDs 103a and 103b. The reflected light is then deflected by a number of mirrors 104a, 104b, and 104c, and the image of the document is read line by line by the front surface reading sensor 108.

[0020] The read document is discharged onto a discharge tray 17 by a transport roller 7 and a discharge roller 16 located between the positions where the front and back sides are read.

[0021] If there are multiple documents on the document tray 30, the aforementioned feeding, separation, and transport processes from the document stack S, the one-sided reading process at the front surface scanning position, and the paper discharge process are repeated until the front surface reading of the final document and the paper discharge to the paper discharge tray 17 are completed.

[0022] <Double-sided reading> The double-sided scanning operation is the same as the single-sided scanning operation except that the reverse side of the document is scanned in addition to the front side of the document. The document feeding, separation, transport, and front side scanning are the same as those in the single-sided scanning operation described above, so the description will be omitted.

[0023] The document conveyed by the front side reading downstream rollers 52 is conveyed to the back side scanning position by the back side reading conveying rollers 7 and the back side reading upstream rollers 53. Before the document reaches the back side scanning position, the movable back side scanning glass 201 is moved to the position shown in Fig. 4. The back side of the document passing between the back side scanning glass 201 and the back side glass facing member 8 is illuminated by back side LEDs 203a and 203b. The reflected light is deflected by multiple mirrors 204a, 204b, and 204c, and the back side image of the document is read by the back side reading sensor 208 (back side reading).

[0024] The document conveyed by the back-side reading downstream roller 54 is conveyed to the paper discharge tray 17 by the paper discharge roller 16 .

[0025] If there are multiple documents on the document tray 30, the above-mentioned feeding, separation, and transport processes from the document stack S, the front and back reading processes at the front and back reading positions, and the discharge process are repeated until the reading of the front and back sides of the final document and discharge to the discharge tray 17 are completed.

[0026] The front side reading unit 105 and the back side reading unit 202 may be configured using a CIS sensor or the like other than the CCD as shown in FIG.

[0027] <Block diagram explanation> 5 is a block diagram showing the configuration of an MFP 1000 in this embodiment. The MFP (Multi Function Peripheral) 1000, which is an example of a document reading device, includes a reader controller 300, a system controller 400, and a printer controller 500.

[0028] The reader controller includes a reader CPU 301 which is a central processing unit, a reader ROM 302 which is a read-only memory, and a reader RAM 303 which is a random access memory. A control program is stored in the reader ROM 302, and input data and working data are stored in the reader RAM 303. The reader CPU 301 controls the document reading unit by executing the flow of the control program stored in the reader ROM 302 as shown in FIG.

[0029] To realize the document transport function, the reader CPU 301 has a paper feed motor 310 and a transport motor 307 that drive each transport roller, and the paper feed motor 310 drives to rotate the paper feed roller 1 and separation roller 2 connected to the paper feed motor. The other rollers, the pull-out roller 3, the transport roller 4, the lead upstream roller 5, the lead downstream roller 7, and the paper discharge roller 16, are directly connected to the transport motor 307 and are driven and stopped in conjunction with the rotation of the transport motor 307.

[0030] In this embodiment, the feed motor 310 and the transport motor 307 are pulse motors, and the reader CPU 301 manages the rotation amount of each motor by controlling the number of drive pulses. Therefore, the number of pulses can be regarded as the transport distance of the document being transported, and the reader CPU 301 can measure the transport distance of the document by counting the number of drive pulses of the feed motor 310 and the transport motor 307.

[0031] Furthermore, transport system sensors (comprising separation sensor 11, pull-out sensor 12, transport sensor 13, lead sensor 14, and discharge sensor 15, also shown in FIG. 4) are connected to various locations along the transport path. Also, an on-tray length sensor 9 for detecting the length of the document size is provided on the tray. Similarly, an on-tray width guide sensor 309 for detecting the width of the document is provided, and the above-mentioned on-tray length sensor 9 and on-tray width guide sensor 309 are used to predict the size of the document placed on the tray.

[0032] When a document is placed on the tray, the reader CPU 301 operates a feed roller lifting motor 311 connected to a feed roller lifting mechanism (not shown in the figure) to lower the feed roller 1. After that, it operates a tray lifting motor 312 connected to a lifting mechanism for lifting the tray (not shown in the figure) to lift the tray.

[0033] The tray stops rising at a position where the lowered paper feed roller abuts against the document placed on the tray, and the motor is operated to feed the document into the machine.

[0034] To the reader CPU 301, the front and back LEDs 106 and 203 and the front and back line sensors 108 and 215 are connected in order to realize the document reading function. The reader CPU 301 performs various image processing on the image data read by the front and back line sensors 108 and 208 in the reader image processing unit 304, and then stores the image data in the reader image memory 305. The reader CPU 301 transmits the stored image data to the system controller 400 via the image data bus 318 in accordance with an image output request received from the system controller 400 via a command data bus 317. Furthermore, the reader CPU 301 notifies the system controller 400 of a vertical synchronization signal that is the reference for the leading edge of the document image data and a horizontal synchronization signal that is the reference for the leading edge of one line of pixels via the image data bus 318 in accordance with the timing of document reading.

[0035] The system controller 400 includes a system CPU 411, a HDD 412, and a RAM 413, and exchanges data related to image reading control with the reader CPU 301 via a command data bus 317. Image data processed by the reader image processing unit 304 is transferred to a system image processing unit 414 in the system controller via an image data bus 318, where it is subjected to predetermined image processing such as color determination, and then stored in an image memory 415. The system controller 400 also includes an operation unit 416 which also serves as a display unit, and the user interface control is performed by the system CPU 411 via the operation unit 416.

[0036] <About mixed document scanning> The reading method for different document sizes will be described. As in the above-mentioned reading method (single-sided and double-sided reading), the reader CPU 301 feeds and conveys documents placed on the document tray 30 into the conveying path one by one using the feed roller 1 and separation roller 2. At this time, the length of the conveyed document is detected using the separation sensor 11. That is, the feed roller 1 feeds a document from the document stack S present in the document tray 30, and the topmost sheet is separated and conveyed by the separation roller 2 and separation pad 21. The leading edge of the conveyed document turns on the separation sensor 11 as it is. When the document is conveyed as it is and the trailing edge of the document passes the separation sensor 11, it turns off. The time from when the separation sensor turns on to when it turns off is measured, and the length of the document is measured according to the conveying speed. This technology is a commonly used known technology.

[0037] The document is then transported to a front surface reading position and read by the front surface reading unit 105. The edges at the ends of the document are detected from the document image read by the reader image processing unit 304, and the document width is measured from the detected edges. The document size is identified from the results of both the measured document width and the document length measurement method described above, and the read image is stored in the reader image memory 305 at the identified document size.

[0038] <Regarding the position of the original on the tray> The position where the original is placed on the original tray 30 will be described with reference to Fig. 1. Fig. 1 is a diagram showing an example of the position where the original is placed on the original tray 30.

[0039] On the document tray 30, there are provided guide portions a and b facing each other for setting the document at the correct position (center position). The guide portions allow the user to manually adjust the width of the document that can be placed on the document tray 30 according to the width of the document in the direction perpendicular to the document transport direction. When one guide portion is moved, the other guide portion moves in conjunction with the guide portion by the same distance. For example, when one guide portion is moved in a direction narrowing the width of the guide portions a and b, the other guide portion also moves in a direction narrowing the width by the same distance. This allows the document to be placed in approximately the center where the paper feed roller 1 is located.

[0040] By narrowing the guide portions a and b to the width of the document placed on the document tray 30, it is possible to prevent the document from being transported at an angle when it is transported by the feed roller 1. Furthermore, the guide portions a and b are used to determine the reading size when documents of one size are placed on the document tray 30 and the documents are to be read. Specifically, the reading size is determined based on the width between the guides a and b and information detected by the length detection sensor 9 on the document tray.

[0041] In the case of mixed originals, multiple different originals are placed on the original tray 30. Therefore, as shown in FIG. 1(a), an original smaller than the largest size is placed against the guide portion a. This makes it possible to prevent the original from being conveyed at an angle when the feed roller 1 conveys the original as shown in FIG. 1(d). This is because the original is held down by the guide portion a even if an oblique torque is applied to the original by the feed roller 1 pulling the left end of the original.

[0042] When mixed originals are placed and an original smaller than the largest size is placed against a guide section, if the smaller size original is a standard size original, it will reach the paper feed roller 1.

[0043] The standard size is a size that is registered in advance in MFP 1000. It may also be a size determined by a standard such as ISO216. Alternatively, it may be either of the two.

[0044] However, when an edge of the document in a direction perpendicular to the document transport direction is abutted against guide portion a as in FIG. 1(b), there is a possibility that the document may be placed such that the edge opposite the abutted edge does not reach feed roller 1. Examples of documents of such irregular sizes include receipts and other invoices, checks, and slips. Here, an irregular size is a size that is not registered in MFP 1000. It may also be a size that is not specified by a standard such as ISO216. It may also be neither of these sizes.

[0045] In this case, even if a reading command is issued, the topmost document that is not in contact with the feed roller 1 will not be transported, and only the document in contact with the feed roller 1 will be transported. Thus, depending on the size of the document, if it is placed against the guide section, it may not reach the feed roller 1 and will not be transported. To solve this problem, the document must be placed so that the feed roller 1 can transport it, as shown in FIG. 1(c). To place the document in this way, the user executes the following process.

[0046] <About mixed scanning of non-standard size documents> In this embodiment, the scanning of mixed documents of non-standard sizes will be described with reference to the drawings. Fig. 6 is a diagram showing an example of a home screen 600. The home screen 600 in Fig. 6 is a screen that is displayed on the operation unit 416 after the power is turned on and when no scanning operation is being performed. Buttons 601 to 606 shown in Fig. 6 are selection buttons, and selection can be made by touching the touch panel of the operation unit 416.

[0047] When the user wishes to scan a mixture of documents of non-standard sizes, the user can select a button 604 to enable scanning of documents of non-standard sizes.

[0048] When the button 604 is selected, the screen shown in Fig. 7(a) is displayed, which displays information that prompts the user to place the document in the center of the document tray. The user can also select detailed scan settings that he or she desires. Here, the center of the document tray refers to the center of the document tray in the direction perpendicular to the document transport direction.

[0049] 7 is a diagram showing an example of a screen for notifying information. When a user wishes to scan a mixture of standard size documents, the user can select a button 605 to enable the scanning of a mixture of standard sizes.

[0050] When the button 605 is selected, the screen shown in Fig. 7(b) is displayed, which displays information urging the user to place the document against the guide section at the back of the document tray. The user can also select detailed scan settings as desired.

[0051] In this embodiment, an example has been described in which the screen of FIG. 7(a) is displayed when button 604 is selected, and the screen of FIG. 7(b) is selected when button 605 is selected, but this is not limited to this.

[0052] For example, a button 601 for displaying a screen for setting the copy function of MFP 1000 is selected, and the read setting screen is displayed. It may also be displayed when a copy execution is instructed in a state in which a mode for reading non-standard size documents and a mode for reading mixed documents (mixed document mode) are set on the read setting screen. It may also be displayed when a scan execution is instructed. In that case, the setting button on the screen in FIG. 7(a) is not displayed.

[0053] Furthermore, when a button 602 for displaying a screen for setting a function of the MFP 1000 to transmit image data generated by scanning an original is selected, a read setting screen is displayed. The read setting screen may also be displayed when a transmission execution instruction is given with a mode for scanning originals of a non-standard size and a mode for scanning mixed-size originals set on the read setting screen. The read setting screen may also be displayed when a scan execution instruction is given. In this case, the setting button on the screen in FIG. 7(a) is not displayed.

[0054] A button 603 in FIG. 6 is a button for displaying a screen for setting a function for reading an original and storing the generated image data in the HDD 412 of the MFP 1000 .

[0055] A button 606 is a button for displaying a screen for setting various settings of the MFP 1000 .

[0056] <Display control of document placement method according to mixed mode> Display control of the original placement method according to the mixed original mode in this embodiment will be described with reference to the flowchart of Fig. 8. Fig. 8 is a flowchart showing an example of the flow of the screen display when MFP 1000 executes the reading process.

[0057] The flow in Fig. 8 is executed by the system CPU 411 executing a program read from the ROM 417 and loaded into the RAM 413. The flow in Fig. 8 is started when the power of the MFP 1000 is turned ON.

[0058] In S801, the system CPU 411 determines whether or not the mixed document mode is set. That is, the system CPU 411 determines whether or not there is a possibility of reading documents of a plurality of different sizes. Specifically, it determines whether or not the button 604 or 605 is selected on the home screen 600. Alternatively, it determines whether or not the mixed document mode is set on the reading setting screen that is displayed after the button 601 or 602 is selected. If it is determined that the mixed document mode is set, the process proceeds to S802. If not, the process proceeds to S803.

[0059] Here, the mixed document mode is a mode for reading a plurality of documents of different sizes in one job.

[0060] In S802, the system CPU 411 determines whether or not a mode for reading in a non-standard size has been set. Specifically, the system CPU 411 determines whether or not the button 604 on the home screen 600 has been selected. Alternatively, the system CPU 411 determines whether or not a mode for reading in a non-standard size has been set on the reading setting screen that is displayed after the button 601 or 602 is selected.

[0061] If it is determined that the non-standard size reading mode is set, the process proceeds to S804, otherwise, the process proceeds to S803.

[0062] 7B, the system CPU 411 displays information on the operation unit 416 to prompt the user to place each of the multiple documents against one guide section (at the back side) of the document tray. In this way, when it is determined that a document of a size that will not reach the feed roller 1 and will not be transported when it is abutted against the guide section, such as a non-standard size, is not to be placed, it is possible to prevent the document from being transported at an angle.

[0063] 7A, the system CPU 411 displays information on the operation unit 416 to prompt the user to place each of the multiple documents in the center of the document tray. In this way, when it is determined that the document placed is of a size that will not reach the feed roller 1 and will not be transported if it hits the guide unit, it is possible to prevent the document from not being transported.

[0064] The information shown in FIG. 7 may be information that prompts the user to place a document having a width less than the width between the guide portions a and b in the center or against the guide portions.

[0065] In this embodiment, an example in which the screen in Fig. 7(a) is displayed based on the setting of the mixed document mode and the setting of the mode for reading documents of irregular sizes will be described, but the present invention is not limited to this. For example, even if the mode for reading documents of irregular sizes is not set, the screen in Fig. 7(a) may be displayed based on the setting of the mixed document mode. This can prevent documents of irregular sizes from not being transported even when the user places documents of irregular sizes on the document tray but does not set the mode for reading documents of irregular sizes.

[0066] In S805, the system CPU 411 determines whether the start button has been selected. Specifically, when the button 604 or 605 on the home screen 600 has been selected, the system CPU 411 determines whether the start button displayed on the screen of FIG. 7(a) or the screen of FIG. 7(b) has been selected. Alternatively, when the button 601 or 602 on the home screen 600 has been selected and a mode has been set on the reading setting screen, the system CPU 411 determines whether the start button displayed on the reading setting screen has been selected. If selected, the process proceeds to S806. If not, the process returns to S805.

[0067] In S806, the system CPU 411 controls the reader CPU 301, which in turn controls the ADF 200 to transport one document placed on the document tray 30, read the document, and generate image data. At this time, if a button such as buttons 601 and 602 is selected and reading is instructed, a process corresponding to the function of the button is started as a separate flow. For example, when button 601 is selected, a process of printing an image on paper based on the generated image data is started. Also, when button 602 is selected, a process of sending the generated image data to a set destination is started.

[0068] The system CPU 411 controls the reader CPU 301 to determine whether or not a jam has occurred in the ADF 200. If it is determined that a jam has occurred, the process proceeds to S809. If not, the process proceeds to S808.

[0069] In S808, the system CPU 411 controls the reader CPU 301 to determine whether or not an original is placed on the original tray 30, and to determine whether or not all of the originals have been scanned. If it is determined that all of the originals have been scanned, the process ends. If not, the process returns to S806.

[0070] In S809, the system CPU 411 displays the jam recovery procedure on the operation unit 416. After S809, the system CPU 411 proceeds to S810 and waits for the jam to be cleared. If the system CPU 411 is notified by the reader CPU 301 that the jam has been cleared in S810, the system CPU 411 proceeds to S811 and determines whether or not the document is a standard size mixed scan. If the system CPU 411 determines that the document is a standard size mixed scan in S811, the system CPU 411 proceeds to S812 and displays on the operation unit 416 a message to the user to place the document by butting it against the guide at the back side of the tray. If the system CPU 411 determines that the document is not a standard size mixed scan in S811, the system CPU 411 proceeds to S813 and determines whether or not the document is a non-standard size mixed scan. If the system CPU 411 determines that the document is a non-standard size mixed scan in S813, the system CPU 411 proceeds to S814 and displays on the operation unit 416 a message to the user to place the document in the center of the tray. If it is determined in S813 that the scan is not for non-standard size mixed sheets, or after the processes of S812 and S814, the process proceeds to S815 and waits for the start button to be pressed. If it is determined in S815 that the start button has been pressed, the process proceeds to S816, where the system CPU 411 notifies the reader CPU 301 to resume from the jam, and performs a process of blank-reading and discharging the scanned document. After S816, the reader CPU 301 returns to S806 and resumes scanning the document.

[0071] As a result, before starting mixed scan and when replacing documents when a jam occurs, the user can see from the display on the operation unit how to place the documents in accordance with the selected mixed mode. This makes it possible to prevent problems such as documents not being fed, jamming, and images being cut off due to incorrect document placement.

[0072] In this embodiment, an example is described in which information is displayed to encourage the user to place the document in the center of the document tray in the direction perpendicular to the document transport direction, but the present invention is not limited to this. For example, information may be displayed to encourage the user to place the document in the center of the document tray in the direction perpendicular to the document transport direction.

[0073] <Other embodiments> The present invention can be realized by supplying a program that realizes one or more functions of the above-mentioned embodiments to a system or device via a network or a storage medium. Then, one or more processors in the computer of the system or device can read and execute the program. It can also be realized by a circuit (e.g., ASIC) that realizes one or more functions. [Explanation of symbols]

[0074] 1000 MFP 411 System CPU 30 Document Tray 1 Feed roller

Claims

1. A display means; A document reading device having a placement unit on which a plurality of documents are placed, a conveying means for conveying the plurality of documents placed on the placement section; a reading means for reading the document conveyed by the conveying means and generating image data; The document reading device is characterized in that, based on at least a mode in which the reading means reads documents of multiple different sizes in one job and a mode in which a document of a size not registered in the document reading device is set, the display means displays information encouraging the user to place the document in the center of the loading section in a direction perpendicular to the direction in which the document is transported by the transport means.

2. a guide section for adjusting a width of the document that can be placed on the placement section in a direction perpendicular to a direction in which the document is transported by the transport means, The document reading device according to claim 1, characterized in that, based on a mode set in the document reading device, the display means determines whether to display information encouraging the user to place the document in the center of the placement section in a direction perpendicular to the direction in which the document is transported by the transport means, or to display information encouraging the user to place the document by abutting the edge of the document in the direction perpendicular to the direction in which the document is transported by the transport means against the guide section.

3. The document reading device according to claim 2, characterized in that the display means displays information encouraging the user to place the document by abutting the edge of the document in a direction perpendicular to the direction of transport of the document by the transport means against the guide portion, based on the fact that a mode in which the reading means reads documents of multiple different sizes in one job is set in the document reading device and that a mode in which a document of a size not registered in the document reading device is not set in the document reading device.

4. a guide section for adjusting a width of the document that can be placed on the placement section in a direction perpendicular to a direction in which the document is transported by the transport means, a determining unit that determines whether the reading unit is capable of reading a plurality of documents of different sizes that are placed on the placement unit and transported by the transport unit; The document reading device according to claim 1, characterized in that, based on at least the result of the judgment by the judgment means, it is determined whether the display means displays information encouraging the user to place the document in the center of the placement section in a direction perpendicular to the direction in which the document is transported by the transport means, or whether the display means displays information encouraging the user to place the document by abutting the edge of the document in the direction perpendicular to the direction in which the document is transported by the transport means against the guide section.

5. the conveying means includes a roller that contacts the document placed on the placement section and conveys the document, 5. The document reading device according to claim 1, wherein the roller is provided at a substantial center of the placement portion in a direction perpendicular to a direction in which the document is transported by the transport means.

6. The document reading device according to any one of claims 1 to 5, characterized in that the display means displays information encouraging the user to place each of the multiple documents in a position aligned with the center of the placement section in a direction perpendicular to the direction in which the documents are transported by the transport means.

7. the conveying means includes a roller that contacts the document placed on the placement section and conveys the document, The document reading device according to claim 3, characterized in that a document of a size not registered in the document reading device includes a document whose end that is not abutted does not reach the roller when the document is placed on the loading section with its end abutted against the guide section.

8. A method for controlling a document reading device having a display unit and a placement unit for placing a plurality of documents, comprising the steps of: a conveying step of conveying the plurality of documents placed on the placement section; a reading step of reading the document conveyed in the conveying step to generate image data; A method for controlling a document reading device, characterized in that, based on at least the fact that a mode for reading documents of multiple different sizes in one job is set in the document reading device in the reading process, the display means displays information encouraging the user to place the document in the center of the placement section in a direction perpendicular to the direction in which the document is transported by the transport process.

9. A program for causing a computer to execute each unit of the document reading apparatus according to any one of claims 1 to 7.

10. A display means; A document reading device having a placement unit on which a plurality of documents are placed, a conveying means for conveying the plurality of documents placed on the placement section; a reading means for reading the document conveyed by the conveying means and generating image data; a receiving unit for receiving a selection by a user of a display object for enabling a setting for scanning documents of a plurality of different sizes including a non-standard size in one job; A document reading device characterized in that, when the display object is selected, the display means displays information prompting the user to place the multiple documents in the center of the placement section in a direction perpendicular to the direction of transport of the documents by the transport means.

11. 11. The document reading apparatus according to claim 10, wherein the display unit displays the information before the reception unit receives an instruction to execute the one job.

12. 12. The document reading apparatus according to claim 10, wherein the display unit displays the information based on the selection of the display object.

13. 13. The document reading device according to claim 10, wherein the non-standard size is a size that is not registered in the document reading device.

14. the conveying means includes a roller that contacts the document placed on the placement section and conveys the document, 14. The document reading device according to claim 10, wherein the roller is provided at a substantial center of the placement portion in a direction perpendicular to a direction in which the document is transported by the transport means.

15. 15. The document reading device according to claim 10, wherein the display object is a button.

16. A method for controlling a document reading device having a document placement unit for placing a plurality of documents and a transport unit for transporting the plurality of documents placed on the document placement unit, comprising: a reading step of reading the document conveyed by the conveying means to generate image data; a receiving step of receiving a user's selection of a display object for enabling a setting for scanning documents of a plurality of different sizes including a non-standard size in one job; a display step of displaying information prompting the user to place the plurality of documents in the center of the placement section in a direction perpendicular to the transport direction of the documents by the transport means when the display object is selected.

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