Document management system and document management method

Abstract

To efficiently perform work for computerizing a paper document and registering an electronic document in a database and inventory work of the paper document to be an original of the electronic document registered in the database.SOLUTION: In a document management system 1, a label 4 having a bar code 40 and an RF tag 41 is stuck to a document folder 3. A document electronization device 5 includes document electronization means 50 for registering an electronic document 6 generated by a scanner 52 in a document database 8 in association with document identification information read by a barcode reader 51 from a barcode 40 of a label 4 attached to a document folder 3. An inventory management device 7 includes inventory management means 70 for registering inventory information indicating contents of inventory work in a document database 8 in association with document identification information read by an RF tag reader 71 from an RF tag 41 of a label 4 stuck to a document folder 3.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to a technique for managing documents. [Background technology]

[0002] It has long been the practice to optically read paper documents using a scanner and store the resulting digital documents in a database (see, for example, Patent Document 1). To manage digitalized paper documents, barcodes that encode document identification information for uniquely identifying the paper document are commonly used.

[0003] Barcodes printed on paper documents can be used not only to manage paper documents but also to manage electronic documents stored in a database. In the invention disclosed in Patent Document 1, evidence information is read from the barcode by a multifunction device that digitizes paper documents, and the evidence information read from the barcode is used to identify the electronic document. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-61551 Summary of the Invention [Problem to be solved by the invention]

[0005] Paper documents are the originals that guarantee the content of electronic documents that have been digitized from paper documents. For this reason, in addition to storing the electronic documents that have been digitized from paper documents, it is also necessary to store the original paper documents that served as the electronic documents. If paper documents that serve as the originals of electronic documents are stored, it is necessary to periodically take an inventory of the paper documents. Inventory of paper documents involves checking whether or not there are any paper documents that serve as the originals of electronic documents, and disposing of paper documents that have exceeded their storage period.

[0006] Barcodes printed on paper documents can be used for paper document inventory, but if inventory work is performed using barcodes printed on paper documents, the barcode must be read for each paper document, which increases the workload of the inventory work.

[0007] Therefore, the present invention aims to efficiently perform the work of digitizing paper documents and registering the electronic documents in a database, and the work of inventorying the paper documents that are the originals of the electronic documents registered in the database. [Means for solving the problem]

[0008] The first invention that solves the above-mentioned problems is a system-related invention, which is a document management system that includes a document folder for storing paper documents, which are paper documents, labels to be affixed to the document folder, a document digitization device that digitizes the paper documents, a document database that stores electronic documents, which are documents that have been digitized from the paper documents, and an inventory management device that manages the inventory of the paper documents. The label according to the first aspect of the present invention comprises a barcode that encodes at least document identification information for identifying the paper document to be placed in the document folder, and an RF tag that stores at least the document identification information. The document digitization device of the first invention comprises a barcode reader that reads information from the barcode, a scanner that optically scans the paper document to generate the electronic document, and document digitization means that optically scans the paper document and registers the electronic document generated by the scanner in the document database, linking the document identification information read by the barcode reader from the barcode on the label affixed to the document folder in which the paper document to be digitized is placed. The inventory management device of the first invention comprises an RF tag reader capable of reading information from multiple RF tags at once, and an inventory management means for registering inventory information indicating the contents of the inventory work in the document database, linking it to the document identification information read by the RF tag reader from the RF tag on the label affixed to the document folder.

[0009] The second invention that solves the above-mentioned problem is a method-related invention, and is a document management method executed in a document management system that includes a document folder for storing paper documents, which are paper documents, labels to be affixed to the document folder, a document digitization device that digitizes the paper documents, a document database that stores electronic documents, which are documents that have been digitized from the paper documents, and an inventory management device that manages the inventory of the paper documents. In the document management method according to the second invention, the label is provided with a barcode that encodes at least document identification information that identifies the paper medium to be placed in the document folder, and an RF tag that stores at least the document identification information. The document management method of the second invention includes a document digitization process in which the document digitization device optically scans the paper documents and registers the electronic documents generated by the scanner in the document database, linking the document identification information read by the barcode reader that reads information from the barcode on the label affixed to the document folder in which the paper documents to be digitized are placed; and an inventory process in which the inventory management device uses an RF tag reader that can read information from multiple RF tags at once to register inventory information indicating the content of the inventory work in the document database, linking the document identification information read by the RF tag reader from the RF tags on the label affixed to the document folder. [Effects of the Invention]

[0010] The present invention described above is configured to efficiently register electronic documents converted from paper documents into a database and inventory the paper documents that are the originals of the electronic documents registered in the database by using a label that combines a barcode used in registering electronic documents converted from paper documents and an RF tag used in inventorying paper documents. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram illustrating the configuration of a document management system. [Figure 2] A diagram explaining document folders. [Figure 3] A diagram explaining labels. [Figure 4] A diagram explaining a filing cabinet. [Figure 5] FIG. 1 is a diagram illustrating a document digitization device. [Figure 6] FIG. 1 is a diagram illustrating an inventory management device. [Figure 7] FIG. 1 is a diagram illustrating records used for managing electronic documents. [Figure 8] FIG. 2 is a diagram illustrating the process executed in the document management system. [Figure 9] FIG. 1 is a diagram illustrating a document digitization process. [Figure 10] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the invention disclosed in this application will be described. These embodiments are intended to facilitate understanding of the invention. The invention disclosed in this application is not limited to these embodiments. Furthermore, unless otherwise specified, the drawings are schematic diagrams drawn to facilitate understanding of the invention disclosed in this application.

[0013] FIG. 1 is a diagram illustrating the configuration of a document management system 1. The document management system 1 shown in FIG. 1 includes paper documents 2, which are paper documents, document folders 3 for storing the paper documents 2, labels 4 affixed to the document folders 3, a document database 8 for storing electronic documents 6 obtained by digitizing the paper documents 2, a document digitization device 5 that registers the electronic documents 6 obtained by digitizing the paper documents 2 in the document database 8 using a scanner 52, and an inventory management device 7 that registers the inventory results of the paper documents 2 in the document database 8. In FIG. 1, the document digitization device 5, inventory management device 7, and document database 8 are connected to a network 90. ​​FIG. 1 also illustrates a document shelf 91 used to store the digitized paper documents 2.

[0014] The document management system 1 according to this embodiment uses two types of automatic recognition technology. One is an optical automatic recognition technology, and the other is a wireless automatic recognition technology. The optical automatic recognition technology is an automatic recognition technology that uses light to read information. The wireless automatic recognition technology is an automatic recognition technology that uses wireless communication to read information.

[0015] To accommodate two types of automatic recognition technology, the label 4 affixed to the document folder 3 includes a barcode 40 and an RF tag 41. The barcode 40 used in optical automatic recognition technology is printed on the surface of the label 4 affixed to the document folder 3. The label 4 affixed to the document folder 3 also incorporates an RF tag 41 used in radio frequency automatic recognition technology. If the label 4 is affixed to the paper document 2, there is a possibility that the RF tag 41 will be damaged when the paper document 2 is fed one by one by the scanner 52. For this reason, in the present application, the label 4 provided with the barcode 40 and RF tag 41 is affixed to the document folder 3 rather than to the paper document 2.

[0016] The information encoded into the barcode 40 and the information stored in the RF tag 41 are each document identification information that can uniquely identify the paper document 2 placed in the document folder 3. In the present application, the numerical value of the document identification information encoded into the barcode 40 and the numerical value of the document identification information stored in the RF tag 41 are made the same. By using a label printer compatible with the RF tag 41, the information encoded into the barcode 40 and the information stored in the RF tag 41 can be made the same. As long as the document database 8 can manage the numerical value of the document identification information encoded into the barcode 40 and the numerical value of the document identification information stored in the RF tag 41 in association with each other, the numerical value of the document identification information encoded into the barcode 40 and the numerical value of the document identification information stored in the RF tag 41 may be different.

[0017] The document management system 1 according to this embodiment uses two types of automatic recognition technology because it uses optical automatic recognition technology to register the electronic document 6, which is a digitized version of a paper document 2, and wireless automatic recognition technology to inventory the paper documents 2. When digitizing paper documents 2, other document folders 3 are often located near the document folder 3 containing the paper document 2 to be digitized. For this reason, if wireless automatic recognition technology is used when digitizing paper documents 2, not only the label 4 of the document folder 3 containing the paper document 2 to be loaded into the scanner 52 but also the labels 4 of other document folders 3 will be recognized. Therefore, the document management system 1 according to this embodiment uses optical automatic recognition technology when digitizing paper documents 2 so as to reliably recognize only the label 4 of the document folder 3 containing the paper document 2 to be loaded into the scanner 52. In contrast, when inventorying paper documents 2 stored in the filing cabinet 91, inventorying multiple paper documents 2 at once increases the efficiency of the inventory process. For this reason, in the document management system 1 according to this embodiment, when inventorying the paper documents 2, a wireless automatic recognition technique capable of collectively recognizing a plurality of RF tags 41 is used.

[0018] To enable the use of optical automatic recognition technology, the document digitization device 5 that digitizes the paper document 2 is equipped with a scanner 52 that optically reads the paper document 2, as well as a barcode reader 51 that uses light to read document identification information from the barcode 40. The document digitization device 5 links the document identification information read by the barcode reader 51 from the barcode 40 on the label 4 affixed to the document folder 3 in which the paper document 2 to be digitized is placed (this will be the document folder 3 in which the paper document 2 to be set in the scanner 52 is placed), optically scans the paper document 2, and registers the electronic document 6 generated by the scanner 52 in the document database 8, thereby streamlining the process of registering the electronic document 6 in the document database 8.

[0019] In order to enable the use of wireless automatic recognition technology, an inventory management device 7 that manages the inventory of paper documents 2 is equipped with an RF tag reader 71 that uses wireless technology to read document identification information from RF tags 41. The inventory management device 7 links the document identification information read by the RF tag reader 71 from the RF tag 41 on the label 4 affixed to the document folder 3 in which the paper documents 2 that are the subject of inventory work are placed, and registers the inventory information indicating the inventory work in a document database 8, thereby streamlining the inventory work of paper documents 2 that are the originals of electronic documents 6 registered in the document database 8.

[0020] Next, we will explain in detail each of the components that make up the document management system 1. Fig. 2 is a diagram illustrating a document folder 3. Fig. 3 is a diagram illustrating a label 4. Fig. 4 is a diagram illustrating a document shelf 91.

[0021] The paper documents 2 are paper documents that need to be stored for a certain period of time, such as application forms and contracts. The document folder 3 is a piece of stationery for storing the paper documents 2 individually. In Figure 2, the document folder 3 is shown as a clear folder. A clear folder made of transparent plastic is a piece of stationery for storing paper documents 2 by sandwiching them inside. Because the contents of the clear folder are visible through the clear folder, the paper documents 2 stored in the clear folder can be seen at a glance. Note that the document folder 3 may also be an opaque folder for storing paper documents 2 by sandwiching them inside.

[0022] The label 4 affixed to the document folder 3 is a medium used in automatic recognition technology. As shown in Fig. 3, a barcode 40 used in optical automatic recognition technology is printed on the surface of the label 4. In Fig. 3, the barcode 40 is illustrated as a two-dimensional barcode, but the barcode 40 may be a one-dimensional barcode or a two-dimensional code other than a two-dimensional barcode (for example, Data Matrix).

[0023] 3, the label 4 affixed to the document folder 3 incorporates an RF tag 41 used in radio frequency automatic recognition technology. In this embodiment, the barcode 40 is printed avoiding the location of the RF tag 41, but if an inkjet printer or the like is used to print the barcode 40, the barcode 40 can be printed without avoiding the location of the RF tag 41.

[0024] The RF tag 41 refers to a small electronic device that transmits and receives information using radio waves. The RF tag 41 is also called an RFID tag (Radio Frequency Identification Tag), radio frequency identification tag, wireless tag, or wireless IC tag. As shown in FIG. 3, the RF tag 41 embedded in the label 4 includes an IC chip 410 (integrated circuit) and an antenna 411. In this embodiment, the RF tag 41 embedded in the label 4 is compatible with the UHF (Ultra High Frequency) band. RF tags 41 that are compatible with the UHF band have the feature of being able to read multiple RF tags 41 at once. By utilizing this feature, multiple paper documents 2 can be inventoried at once, thereby making inventory work more efficient.

[0025] The document shelf 91 is a shelf for storing document folders 3 containing digitized paper documents 2. The document shelf 91 shown in Fig. 4 is provided with a plurality of shelves 910. The document folders 3 containing digitized paper documents 2 are stored on the shelves 910 in a classified state using folder boxes 911.

[0026] 5 is a diagram illustrating the document digitization device 5. The document digitization device 5 is a device realized using a computer. As shown in FIG. 5, the document digitization device 5 includes a processor 500, a memory 501, a storage 502, an input / output interface 504, a display 503, a barcode reader 51, and a scanner 52.

[0027] The memory 501 is a volatile memory. The storage 502 is a large-capacity non-volatile memory that is electrically rewritable. The input / output interface 504 is an interface for connecting to external devices. The barcode reader 51 and the scanner 52 are connected to the processor 500 via the input / output interface 504. The display 503 is a device that displays images. The processor 500 is an integrated circuit that has the function of executing a computer program transferred from the storage 502 to the memory 501. Note that the document digitization device 5 includes elements that are necessary for the document digitization device 5 but are not shown in FIG. 5, such as a power supply circuit and a network interface.

[0028] The barcode reader 51 is a device that optically reads the barcode 40 printed on the label 4 attached to the document folder 3. The barcode reader 51 corresponds to the type of barcode 40 printed on the label 4. In this embodiment, the barcode 40 printed on the label 4 is a two-dimensional barcode, and therefore the barcode reader 51 corresponds to the two-dimensional barcode.

[0029] The scanner 52 is a device that optically reads characters and images printed on paper and converts them into digital data. Because there are paper documents 2 consisting of multiple pages, a document feeder type scanner 52 that can set paper documents 2 consisting of multiple pages at once and automatically scans the paper documents 2 one by one is suitable.

[0030] The document digitization device 5 is provided with a document digitization means 50, which, as a function realized by using a computer program that operates a processor 500, links the document identification information read by a barcode reader 51 from a barcode 40 on a label 4 affixed to a document folder 3 containing a paper document 2 to be digitized, optically scans the paper document 2 to be digitized, and registers the electronic document 6 generated by a scanner 52 in a document database 8.

[0031] 6 is a diagram illustrating the inventory management device 7. The inventory management device 7 is a device implemented using a computer. As shown in FIG. 6, the inventory management device 7 includes a processor 700, a memory 701, a storage 702, an input / output interface 704, a display 703, and an RF tag reader 71.

[0032] The memory 701 is a volatile memory. The storage 702 is a large-capacity electrically rewritable non-volatile memory. The input / output interface 704 is an interface for connecting to an external device. The RF tag reader 71 is connected to the processor 700 via the input / output interface 704. The display 703 is a device for displaying images. The processor 700 is an integrated circuit that has the function of executing a computer program transferred from the storage 702 to the memory 701. The inventory management device 7 also includes elements necessary for the inventory management device 7 that are not shown in FIG. 6, such as a power supply circuit and a network interface.

[0033] The RF tag reader 71 is a device that reads information (here, document identification information) from the RF tag 41 attached to the label 4 affixed to the document folder 3. The RF tag reader 71 reads information from the RF tag 41 using radio waves in a frequency band that the RF tag 41 supports. In this embodiment, the RF tag 41 supports the UHF band. The RF tag reader 71 that supports the UHF band can read information from multiple RF tags 41 at once.

[0034] The inventory management device 7 includes an inventory management means 70, which is a function realized by using a computer program that operates the processor 700, that links the document identification information read by an RF tag reader 71 from the RF tag 41 on the label 4 affixed to the document folder 3 containing the paper document 2 to be inventoryed, and registers inventory information indicating the results of the inventory in the document database 8. The inventory information is information that indicates the results of the inventory. For example, the inventory information is information indicating an inspection to check for the presence or absence of the paper document 2 and the inspection result, or information indicating the disposal of the paper document 2 and that the paper document 2 has been disposed of.

[0035] Fig. 7 is a diagram illustrating a record 80 used to manage an electronic document 6. The document database 8 is a database in which electronic documents 6 generated by the document digitization device 5 are registered. The document database 8 has a record 80 used to manage the electronic document 6 for each electronic document 6 registered in the document database 8. As shown in Fig. 7, the record 80 used to manage the document database 8 has at least a column containing document identification information as an item, a column containing document name as an item, a column containing creation date and time of the electronic document 6 as an item, a column containing storage destination of the electronic document 6 as an item, a column containing inventory date and time as an item, and a column containing inventory information as an item.

[0036] In the column with document identification information as an item, document identification information sent from the document digitization device 5 is registered. In the column with document name as an item, the document name of the electronic document 6 sent from the document digitization device 5 is registered. In the column with creation date and time of the electronic document 6 as an item, the date and time when the electronic document 6 was sent from the document digitization device 5 is registered. In the column with storage destination of the electronic document 6 as an item, information indicating the storage destination of the electronic document 6 sent from the document digitization device 5 is registered. In the column with inventory date and time as an item, the date and time when inventory information was sent from the inventory management device 7 is registered. In the column with inventory information as an item, inventory information sent from the inventory management device 7 is registered.

[0037] Next, we will explain the processing executed by the document management system 1. The explanation of the processing executed by the document management system 1 also includes an explanation of the document management method, which is an invention of the method disclosed in this application. Figure 8 is a diagram explaining the process executed by the document management system 1. Figure 9 is a diagram explaining the document digitization process. Figure 10 is a diagram explaining the inventory process.

[0038] As shown in Figure 8, the processes executed by the document management system 1 include a document digitization process (step S1) in which electronic documents 6, which are digitized versions of paper documents 2, are registered in the document database 8, and an inventory process (step S2) in which inventory information indicating the contents of the inventory work for the paper documents 2 stored in the document shelf 91 is registered in the document database 8.

[0039] 9, in the document digitization process (step S1), the document digitization means 50 of the document digitization device 5 executes a process of reading the document identification information of the paper document 2 to be digitized (step S10). In this process, the document digitization means 50 of the document digitization device 5 displays an instruction to read the document identification information on the display 503 of the document digitization device 5. The worker performing the work of digitizing the paper document 2 performs the work of having the barcode reader 51 read the document identification information encoded in the barcode 40. The barcode 40 read in this work is the barcode 40 printed on the surface of the label 4 affixed to the document folder 3 containing the paper document 2 to be digitized.

[0040] Next, the document digitization means 50 of the document digitization device 5 executes a process to digitize the paper document 2 (step S11). In this process, the document digitization means 50 of the document digitization device 5 displays an instruction to read the paper document 2 on the display 503 of the document digitization device 5. The worker performing the work of digitizing the paper document 2 performs the work of having the scanner 52 read the paper document 2 to be digitized. The paper document 2 that is the subject of this work is the paper document 2 that has been taken out of the document folder 3 to which the label 4 from which the barcode 40 has been read is affixed.

[0041] Next, the document digitization means 50 of the document digitization device 5 executes a process of registering the electronic document 6 obtained by digitizing the paper document 2 in the document database 8 (step S12), and the procedure of FIG. 9 ends.

[0042] In this process, the document digitization means 50 of the document digitization device 5 transmits the document identification information acquired in step S10 and the electronic document 6 acquired in step S11 to the document database 8. The document database 8 generates a record 80 for the electronic document 6 transmitted from the document digitization device 5, then stores the electronic document 6 transmitted from the document digitization device 5 in the document database 8, and updates the contents of the record 80 corresponding to the electronic document 6 transmitted from the document digitization device 5. The document identification information transmitted from the document digitization device 5 is registered in a column having the document identification information as an item. The date and time when the electronic document 6 was transmitted from the document digitization device 5 is registered in a column having the creation date and time of the electronic document 6 as an item. Information indicating the destination where the electronic document 6 is transmitted from the document digitization device 5 is registered in a column having the document name as an item. The method for obtaining the document name to be registered in a column having the document name as an item is arbitrary. The scanner 52 or the document database 8 may be provided with a character recognition function, and the characters written on the first page of the electronic document 6 may be used as the document name. Furthermore, the document database 8 may generate a document name using the document identification information transmitted from the document digitization device 5 .

[0043] As shown in FIG. 10 , in the inventory process (step S2), the inventory management means 70 of the inventory management device 7 executes a process of collectively reading document identification information from the RF tags 41 on the labels 4 affixed to each of the multiple document folders 3 that are the subject of the inventory work (step S20). The inventory management means 70 of the inventory management device 7 displays an instruction to read the document identification information on the display 703 of the inventory management device 7. The worker who is taking inventory of the paper documents 2 causes the RF tag reader 71 to collectively read the document identification information stored in each of the RF tags 41 of the multiple document folders that are the subject of the inventory work. The RF tag reader 71 that supports the UHF band can read document identification information from multiple RF tags 41 at one time. Therefore, by using the RF tag reader 71 that supports the UHF band, multiple paper documents 2 that are respectively placed in multiple document folders 3 can be collectively inventoryed. This allows the inventory work of the paper documents 2 to be carried out efficiently.

[0044] Next, the inventory management means 70 of the inventory management device 7 executes a process to register the inventory information in the document database 8, and the procedure in FIG. 10 ends (step S21). In this process, the inventory management means 70 of the inventory management device 7 transmits all of the document identification information acquired in step S20 and the inventory information to be registered in the document database 8 to the document database 8. It is preferable that the inventory information to be registered in the document database 8 can be selected or entered by the worker performing the inventory work. For each document identification information transmitted from the inventory management device 7, the document database 8 registers the inventory information transmitted from the inventory management device 7 in the record 80 in which the document identification information is stored.

[0045] In this way, in the document management system 1 of this embodiment, by using a label 4 that integrates a barcode 40 used to register electronic documents 6 that have been digitized from paper documents 2 and an RF tag 41 used in inventorying the paper documents 2, the paper documents 2 and the electronic documents 6 that have been digitized from the paper documents 2 can be centrally managed on the document database 8 side, and further, the registration work of electronic documents 6 that have been digitized from paper documents 2 and the inventory work of the paper documents 2 that are the originals of the electronic documents 6 can both be performed efficiently.

[0046] In the document management system 1 according to this embodiment, the task of registering an electronic document 6, which is a digitized version of a paper document 2, in the document database 8 simply involves having the barcode reader 51 read the barcode 40 and having the scanner 52 read the paper document 2. Therefore, in the document management system 1 according to this embodiment, the task of registering an electronic document 6, which is a digitized version of a paper document 2, can be performed efficiently. Also, in the document management system 1 according to this embodiment, when inventorying the paper document 2 that is the original of the electronic document 6 registered in the document database 8, multiple RF tags 41 can be read at once by the RF tag reader 71. Therefore, in the document management system 1 according to this embodiment, the task of inventorying the paper document 2 that is the original of the electronic document 6 can be performed efficiently. [Explanation of symbols]

[0047] 1 Document management system 2 Paper documents 3 Document Folder 4. Labels 40 Barcode 41 RF tags 5. Document digitization device 50 Document digitization methods 51 Barcode reader 52 Scanner 6. Electronic Documents 7 Inventory management device 70 Inventory control measures 71 RF tag reader 8 Document Database 90 Network 91 Document shelf

Claims

1. The system includes a document folder for storing paper documents, which are paper documents, a label to be affixed to the document folder, a document digitization device for digitizing the paper documents, a document database for storing electronic documents, which are documents obtained by digitizing the paper documents, and an inventory management device for managing an inventory of the paper documents, The label includes a barcode encoding at least document identification information for identifying the paper document to be placed in the document folder, and an RF tag storing at least the document identification information, The document digitization device includes a barcode reader that reads information from the barcode, a scanner that optically scans the paper document to generate the electronic document, and document digitization means that links the document identification information read by the barcode reader from the barcode on the label attached to the document folder in which the paper document to be digitized is placed, and optically scans the paper document and registers the electronic document generated by the scanner in the document database, The inventory management device includes an RF tag reader capable of reading information from a plurality of RF tags at one time, and inventory management means for registering inventory information indicating the content of inventory work in the document database, by linking the document identification information read by the RF tag reader from the RF tag on the label attached to the document folder. A document management system characterized by:

2. A method executed in a document management system including a document folder for storing paper documents, which are paper documents, labels to be affixed to the document folder, a document digitization device for digitizing the paper documents, a document database for storing electronic documents, which are documents obtained by digitizing the paper documents, and an inventory management device for managing an inventory of the paper documents, a barcode encoding at least document identification information for identifying the paper medium to be placed in the document folder, and an RF tag storing the document identification information, provided on at least the label; a document digitization step in which the document digitization device optically scans the paper document, associates the barcode on the label attached to the document folder containing the paper document to be digitized with the document identification information read by a barcode reader that reads information from the barcode, and registers the electronic document generated by the scanner in the document database; The inventory management device includes an inventory process in which an RF tag reader capable of reading information from a plurality of RF tags at once links the RF tags on the labels attached to the document folders to the document identification information read by the RF tag reader, and registers inventory information indicating the details of the inventory work in the document database. A document management method comprising:

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