KR20200061312A - Security system of multifunction printer using security paper and security system using it - Google Patents

Abstract

The present invention relates to a security system of a multifunction printer using security paper, communicating with a server in a wired or wireless manner. The security system comprises: a security paper detection sensor installed at a random position in a transfer path of a series of paper picked up, fed, printed, and ejected by a pickup roller of a multifunction printer from a cassette or a manual feeder in the multifunction printer, and detecting paper passing through the transfer path in a contact or non-contact manner; and a controller installed inside or outside the multifunction printer, communicating with the security paper detection sensor in a wired or wireless manner, installed to communicate with the server in a wired or wireless manner through or not through the multifunction printer, installed so as not to affect a printing operation of the multifunction printer, installed separately from the multifunction printer, determining whether the specific paper is security paper or normal paper based on a detection value from the security paper detection sensor for specific paper disposed at a position in the transfer path where the security paper detection sensor is located, and transmitting, when the specific paper is determined to be the normal paper, determination results to the server. According to the present invention, the security system can significantly reduce costs required to perform a security function.

Description

Security system of multifunction machine using security paper and security system using same {SECURITY SYSTEM OF MULTIFUNCTION PRINTER USING SECURITY PAPER AND SECURITY SYSTEM USING IT}

The present invention relates to a security system of a multifunction device, and in particular to a security system of a multifunction device and a security system using the same, which can effectively block a document that requires security by determining whether it is a security paper and grasping user information printed on plain paper. It is about.

Recently, with the rapid development of enterprises, security measures against the leakage of documents by enterprises have been devised. As a security measure against such document leakage, recently, document security technology has been developed to which security paper has been applied. These security papers have been printed using special materials or by inserting special materials on paper (paper). Similar non-crystalline state or amorphous, magnetic material (alloy), nano-sized metal wire, and material that has the characteristics of magnetic resonance are used to resonate at a specific frequency to detect signals that can distinguish the properties of the material. It refers to the paper (paper) that occurs.

The security paper is detected by an electromagnetic sensor (EM). That is, when the soft magnetic material in the security paper approaches the alternating magnetic field generated by the sensor, a change occurs in the alternating magnetic field, and the spectrum of the high frequency generated by the change is detected to detect whether the paper is secure. The sensor controls the transmission coil generating an AC magnetic field, the reception coil detecting a change in the AC magnetic field generated by the transmission coil, and controlling the AC magnetic field generated in the transmission coil, and processing a signal received from the reception coil It may include an electronic system.

Alternatively, the security sheet may include a plurality of conductive fine metal pieces irregularly scattered over the entire sheet of paper. The fine metal pieces have conductivity and may be any type of metal as long as they generate an induced current in a magnetic field. For example, the metal piece contained in the paper may have a fine size such that it is not easily discernable to the user with the naked eye, for example, a metal piece having a thickness of 0.1 to 3 μm, a length of 0.3 to 4 cm, and a width of 0.1 to 0.5 mm. The security paper in which the conductive fine metal pieces are scattered induces an eddy current in the fine metal piece of the paper to which the primary magnetic field generated from the inductive sensor is fed, and the magnetic field generated secondary by this eddy current is inducted. It affects the primary magnetic field generated by the TV sensor and changes its intensity. Therefore, the inductive sensor transmits the security paper detection signal to the multifunction device according to the presence or absence of a change in the intensity of the magnetic field generated by itself.

On the other hand, copiers, printers, and multifunction printers are the most common printing devices that output information processed by external devices in a form that can be seen by the human eye. In recent years, copiers, printers, and multifunction printers have been increasingly grouped and shared with each other by grouping around teams or unit organizations in order to increase utilization efficiency due to the increase in functionality and advancement. As described above, when a printout is output using a copier, a printer, and a multifunction printer shared by multiple users, it is difficult to maintain security for a printout requiring security. In the present invention, a device capable of printing paper such as a multi-function device, printer, fax machine, and copier is collectively referred to as a multi-function device, and in the present invention, the'multi-function machine' as well as a multi-function device incorporating the functions of a printer, fax machine, copier, and scanner, as well as a printer and fax machine It also includes devices that implement only the individual functions of the photocopier and scanner.

1 is a block diagram showing a security system in a multifunction device of a conventional firmware interlocking method. Referring to Figure 1, in the case of using a security paper containing a tag or a detection material as described above, the multifunction device 1 is provided with a security paper detection sensor 2 and a firmware 3 having a security function, When the user sends a print command through the PC 4 to the multifunction device 1, the document output from the multifunction device 1 is printed and the content of the document is printed in the case of security paper, but in the case of general paper, the document is printed from the multifunction device 1 The content is not printed, but printed on white paper. In addition, on the LCD screen of the multifunction device 1, security paper mismatch is displayed, and'Yes/No' is displayed as a question asking whether or not to continue the printing operation. If you click No, the data remaining in the multifunction device is deleted and the print job is completely cancelled.

In addition, a detection gate is installed at the entrance, and when a document with a tag for detection passes through the detection gate, it detects it and provides an alarm signal to prevent the export. This technology is currently used to prevent unauthorized export of various books and documents from libraries and companies. The multifunction device of the above-mentioned firmware interlocking method has an advantage in that it is possible to control the printing of the general paper other than the security paper only by the multifunction device itself, and the presence or absence of using the security paper and the deletion of print data with a message displayed on the LCD screen. However, the above-described security multifunction device is in a situation where only a firmware interlocking method having a security function has been developed and sold. That is, a multifunction device having a firmware that does not have a security function has a disadvantage in that it is expensive because it has to be replaced with a new multifunction device equipped with a security function.

In addition, it is possible to install a controller separately from the multifunction device to control the multifunction device that does not have a security function to detect whether it is a security paper and print it out as plain paper. It is also necessary to have a function to control the output to, and a method to control so that no image is generated when printing plain paper is required.

The present invention has been devised to solve the conventional problems as described above, and an object of the present invention is to provide a security system of a multifunction device capable of performing an effective security function at a low cost without having to have a firmware with a security function. The purpose.

In addition, an object of the present invention is to provide a security system of a multifunction device capable of effectively performing a security function without a control process of outputting plain paper to white paper.

The security system of the multifunction device according to an embodiment of the present invention receives user information from the controller and the multifunction device to determine whether the security paper is based on the security paper detection sensor installed on the multifunction device and the signals detected from the security paper detection sensor, and print permission. It includes a server that checks whether there is, and the controller is characterized in that, in the case of general paper, the paper informs the multifunction device that the paper is general paper, and receives the corresponding user information from the multifunction device and transmits it to the server.

In addition, the security system of the multifunction device according to an embodiment of the present invention is further provided with a security gate, and checks user information from the server at the security gate to control the user who printed on the plain paper to go outside.

More specifically, the present invention is a security system of a multifunction machine using a security paper, which communicates with a server by wire or wirelessly, in which the paper is picked up by the pickup roller of the multifunction machine, fed and printed by a cassette or a manual feeding unit. A security paper detection sensor installed to detect the paper passing through the transport path at any position on the transport path of the series of discharged paper, in a contact or non-contact manner; It is installed inside or outside the multifunction device to communicate with the security sensor by wire or wireless, and at the same time, it is installed to communicate with the server, through the multifunction device or through the multifunction device, wired or wirelessly, and not affect the printing operation of the multifunction device. It is installed separately from the multifunction machine, and determines whether the specific paper is security paper or general paper based on the detection value from the security paper detection sensor for the specific paper on the transport path where the security paper detection sensor is located, Provided is a security system for a multifunction device using a security paper including a controller that transmits the result to a server when it is judged to be plain paper.

Here, the controller, together with the result determined as plain paper, may transmit user ID information for performing a print job to plain paper together to the server.

In addition, the controller may transmit page information that has been attempted to be printed on the plain paper among the print jobs in progress.

In addition, the controller, as a separately installed security gate, may transmit user ID information through a server to a general paper.

Preferably, the controller should be read on the transport path and the first detection value detected by the security paper detection sensor when the paper to be read is not on the periphery of the security paper detection sensor in the process of being transported on the transport path. By comparing one or more second detection values sensed by the security paper detection sensor with respect to the paper to be read, if the comparison value is above a predetermined criterion, it can be read as security paper and if it is below a predetermined criterion, it can be read as general paper.

In addition, the present invention, one or more servers, and one or more multifunction devices that use wired or wireless communication with the server and using a security sheet, security paper that can detect the security paper and cannot detect the general paper, security paper As a security system to prevent the leakage of information by a printed document by using a multifunction printer, the multifunction device is on a transport path of a series of paper in which the paper is picked up, fed, printed, and ejected from the cassette or manual feeder by the pickup roller of the multifunction device. A security paper detection sensor installed to detect the paper passing through the transport path at any position in a contact or non-contact manner; It is installed inside or outside the multifunction device to communicate with the security sensor by wire or wireless, and at the same time, it is installed to communicate with the server, through the multifunction device or through the multifunction device, wired or wirelessly, and not affect the printing operation of the multifunction device. It is installed separately from the multifunction machine, and determines whether the specific paper is security paper or general paper based on the detection value from the security paper detection sensor for the specific paper on the transport path where the security paper detection sensor is located, Includes a controller that delivers the result to the server when it is judged to be plain paper, but the server provides a security system for storing information received from the controller.

Here, the server may store the user ID information for performing the print job on the plain paper together with the result determined as the plain paper.

In addition, the server may store page information that has been attempted to be printed on plain paper during an ongoing print job.

In addition, the server may transmit the user ID information that has performed the print job to the plain paper through the security gate.

Preferably, the controller should be read on the transport path and the first detection value detected by the security paper detection sensor when the paper to be read is not on the periphery of the security paper detection sensor in the process of being transported on the transport path. By comparing one or more second detection values sensed by the security paper detection sensor with respect to the paper to be read, if the comparison value is above a predetermined criterion, it can be read as security paper and if it is below a predetermined criterion, it can be read as general paper.

The present invention effectively secures a document using a general-purpose multi-function device without having to replace the multi-function device having a security function firmware, and can significantly reduce costs.

In addition, the present invention can effectively secure a document using a general multifunction printer without a control process of outputting plain paper to white paper, and the cost can be significantly reduced.

1 is a block diagram showing a security system in a multifunction device of a conventional firmware interlocking method.
2 is a view for showing a path through which the paper is fed in the multifunction machine to which the present invention can be applied.
3 is a view for explaining the operation of feeding the paper in the multifunction apparatus to which the present invention can be applied.
4 is a view for explaining the printing process through the LSU (Laser Scanner Unit) in a multifunction machine to which the present invention can be applied.
5 is a block diagram showing an embodiment of a security system of a multifunction device according to the present invention.
6 is a view for briefly explaining a method according to an exemplary embodiment to which a security system of a multifunction device according to the present invention is applied.
7 is a view for briefly explaining a method according to another preferred embodiment to which the security system of the multifunction apparatus according to the present invention is applied.
8 is a plan view showing a preferred embodiment of a PCB for detecting a security paper that can be applied to the present invention.
9 is a view for explaining the interval between the first optical sensor and the security sheet detection sensor, which can be applied to the present invention.
FIG. 10 is a view for explaining a time when the security paper detecting sensor according to the present invention detects a first detection value and a section detecting a second detection value.

Hereinafter, the present invention will be described in detail through examples and drawings.

2 is a view for showing a path through which the paper is fed in the multifunction machine to which the present invention can be applied. 3 is a view for explaining the operation of feeding the paper in the multifunction apparatus to which the present invention can be applied.

As described above, in the present invention,'multifunction machine' includes not only a multifunction machine incorporating functions of a printer, a fax machine, a copy machine, and a scanner, but also a device implementing only individual functions of a printer, a fax machine, a copy machine, and a scanner. In general, the multifunction device indicates that all functions of a printer, fax, copier, and scanner can be implemented, but in the present invention, functions according to the following description may be implemented in the present invention depending on the paper being fed, even if it functions only as a printer or only as a copier. If possible, it will fall within the scope of the present invention. Ordinarily, a general multifunction machine implementing all the above functions will naturally fall within the scope of the present invention.

2 and 3, in the case of manual feeding (MT) or multi-purpose feeding (MPT), the front cover 11 of the printing apparatus 100 for security paper is opened, and manual feeding (MT) is performed, or multi-purpose feeding not shown. When paper is fed with (MPT), the MPT clutch 14 is turned on after the paper feed motor 15-1 starts to rotate, so that the paper feed roller of the manual feed tray ( 15) is rotated, and the printing paper is fed in from the manual feed tray. When the paper transferred from the manual feed tray turns on the paper in sensor 21, paint the paper with a registration roller 17-1 to correct the skew of the paper. Advances further by a certain distance. Then, the registration clutch 17 is turned on to allow the registration roller 17-1 to transfer paper. When the light sensor 22 is turned on by the transfer of paper, the LED head operates to start exposure to the OPC. Will be transferred to. Finally, the paper is discharged to the printing paper outlet 13 on one side of the top cover 10.

When paper is fed from the cassette 12, after the paper feed motor 15-1 starts to rotate, the first clutch 16 is turned on to turn the paper feed roller of the cassette 12 ( 19) is rotated, the paper is raised from the tray of the cassette 12 by the paper feed roller 19 and the separation roller (separation roller) (19-1). At this time, when the paper feed sensor 18 is turned on by the paper raised by the paper feed roller 19, it recognizes that paper feeding is normally performed and turns off the first clutch 16 ( OFF) to stop the paper pickup operation and transfer the paper to the paper-in sensor 21. When the paper conveyed from the tray of the cassette 12 turns on the sensor 21, which is the paper, a specific distance is enough to strike the registration roller 17-1 on the paper to correct the skew of the paper. Further. Then, the registration clutch 17 is turned on so that the reduction roller 17-1 transports paper. When the light sensor 22 is turned on by the transfer of paper, the LED head operates to start exposure to the OPC, and the toner adheres to the exposed portion of the OPC drum, and the OPC drum rotates and moves to the transferred paper. Lose. Finally, the paper is discharged to the printing paper outlet 13 on one side of the top cover 10. Here, the output form of the paper-in sensor 21 is high and low voltage, and the role of the paper-in sensor 21 is that the paper has reached the corresponding position from the tray of the manual feed tray or the cassette 12. When a judgment is made and a certain distance is further entered to the registration roller 17-1 for registration, it becomes a reference point of the corresponding distance. The light sensor 22 is a sensor that generates a signal as to whether or not to start exposure, and typically, as the paper passes through the light sensor 22 on the feeding path, the light sensor 22 detects the paper and sends a signal accordingly. When it occurs, exposure starts. That is, the light sensor 22 is positioned relatively on the paper feed path on the paper feed path. According to an embodiment of the present invention, the security paper detection sensor 20 is located in a paper feeding path. In addition, according to an embodiment of the present invention, the security paper detection sensor 20 is positioned between the paper-in sensor 21 and the light sensor 22 in the paper feeding path.

Detect security paper located on the transport path when paper is picked up from the cassette 12 by the pick-up roller and transferred to the transport path (starting from the cassette or manual feeder and pointing to the path where paper is fed from the multifunction machine-print-discharge) The sensor 20 transmits the sensed value to the controller 30, which will be described later, and compares the controller 30 with a preset reference value to recognize whether security paper is present. According to a preferred embodiment, the controller 30 is detected by the security paper detection sensor 20 at a time when the paper to be read is not around the security paper detection sensor 20 in the process of being transported on the transport path. Compare the first detected value with one or more second sensed values detected by the security paper detection sensor 20 for the paper to be read on the transport path, and if the comparison value is greater than or equal to a predetermined standard, read it as security paper If it is below a predetermined standard, it is read as plain paper.

According to another embodiment of the present invention, the security sheet detection sensor 20 is provided at a predetermined position inside the cassette 12, and the controller 30 is stored in the cassette 12 and then picked up by a pickup roller and moved to start feeding. It can also detect whether it is security paper or general paper by acquiring the detection value of the topmost paper.

4 is a view for explaining a printing process through a laser scanner unit (LSU) in the printing apparatus for security paper according to the present invention.

4(a) is a view for explaining the charging (charging) and exposure (exposure) process. Referring to FIG. 4(a), a voltage is applied to the charging roller (charging roller) 202 to apply the OPC drum ( The surface of the OPC drum 201 is electrically charged. At this time, the toner does not adhere to the charged surface. And when the charged portion reaches the position of the laser scanner unit (LSU) 80 while the OPC drum 201 rotates, the light corresponding to the image to be printed by the LSU 80 is displayed on the OPC drum 201. As it is injected onto the charged surface, an electrostatic latent image in the form of an image is formed.

FIG. 4(b) is a view for explaining the development process. Referring to FIG. 4(b), the toner in the toner container is deposited on a sponge roller 205 and charged by voltage. The toner on the developing roller 204 is transferred to a developing roller 204, and the toner on the developing roller 204 adheres only to the electrostatic latent image formed on the surface of the OPC drum 201 by exposure of the LSU 80, and the rest is recovered by the toner container. do.

4(c) is a view for explaining the transfer process. Referring to FIG. 4(c), the toner buried in the OPC drum 201 is placed on the transfer belt 206 by a potential difference with the T2 roller 207. The image is transferred onto the paper 200 to form an image on the paper 200.

4(d) is a view for explaining a fusing process. Referring to FIG. 4(d), the toner on the paper 200 is heated by a heat roller 210 heated to a high temperature. It is fused to the paper 200 and printing is completed.

5 is a block diagram showing an embodiment of a security system of a multifunction device according to the present invention. Referring to FIG. 5, the security system of the multifunction machine according to an embodiment of the present invention includes a security paper detection sensor 20 installed on a paper transport path in the multifunction machine 10. The security sheet detection sensor 20 may communicate with the multifunction device through wired or wireless communication, but it is not necessary. In addition, it is installed inside the multifunction machine 10 or installed outside the multifunction machine 10 to determine whether the paper on the current feed path is a security paper or a general paper by a signal detected by the security paper detection sensor 20. It includes a controller 30. The controller 30 can also communicate with the multifunction device through wired or wireless communication, but it is not necessary. It also includes a server 40 that receives user information from the multifunction apparatus 10 and checks whether there is a printing right, which is connected to communicate with the multifunction apparatus 10 through wired or wireless communication. The server 40 communicates with the controller 30 wired or wirelessly through the multifunction machine 10 or without the multifunction machine 10, and the controller 30 determines whether the paper on the paper feed path is a security paper as described above. As a result of determining whether the paper is plain paper, in the case of the plain paper, the multifunction machine 10 is notified of the paper, and/or the server 40 is notified of the plain paper. Before notifying the server 40, the controller 30 may receive the corresponding user information from the multifunction machine 10 and inform the fact that it is determined to be general paper with the user information. In this way, the server 40 can know and store the user information to be printed on the plain paper.

When the user makes a print request to the server 40 through the PC 50 or attempts to copy through the multifunction apparatus 10, the server 40 requests user authentication through the multifunction apparatus 10, and the user ID of the user The card is brought into contact with the multifunction apparatus 10. In the case of copying, the server 40 does not request user authentication through the multifunction machine 10, and the user may first make user authentication by touching the user's ID card to the multifunction machine 10 and then proceed with copying. The server 40 receives the user ID information from the multifunction peripheral 10 and checks whether the user is authorized to output and copy. If the user does not have the right to print and copy, the server 40 stops printing of the multifunction device 10, and the multifunction device 10 reports to the server 40 to stop printing, and prepares to proceed to the next printing. Wait. If the user has the authority to print and copy, the server 40 controls the multifunction apparatus 10 to start printing. While printing, each page receives a signal from the security paper detection sensor 20, and the controller 30 determines whether the paper is a security paper or not (general paper).

6 is a view for briefly explaining a method according to an exemplary embodiment to which a security system of a multifunction device according to the present invention is applied. The multifunction machine shown in FIG. 6 may be used for both security paper and general paper, and the printing operation is not performed differently according to the security paper and the general paper, and the same printing operation is performed as shown in the drawing. However, in the multifunction machine according to the present invention, the paper passing through the transfer path at any position on the transfer path of a series of paper in which the paper is picked up by the pickup roller of the multifunction machine, fed, printed and discharged from the cassette or the manual feeder Alternatively, a security paper detection sensor installed to detect non-contactly, and inside or outside the multifunction device, communicates with the security paper detection sensor in a wired or wireless manner, and simultaneously with a server, through a multifunction device, or through a multifunction device, through wired or wireless communication. It is installed so as not to affect the print job of the multifunction device, and is installed separately from the multifunction device and is based on the detection value from the security paper detection sensor for the specific paper where the security paper detection sensor is located on the transport path. By determining whether the specific paper is security paper or general paper, and if it is judged as general paper, it includes a controller that delivers the results to the server, so that print task data as shown in the drawing can be delivered to the server. do. A person with a user ID of ABCDE or BCDEF will tell the server which print file, at what specific time, and on which printer (printer ID). In addition, in the data, which page of the corresponding printing task was printed on the plain paper is also provided. The administrator can check the user ID, file, or a specific page of the file printed on the plain paper through the data such as the abnormality transmitted to the server and stored.

7 is a view for briefly explaining a method according to another preferred embodiment to which the security system of the multifunction apparatus according to the present invention is applied. Unlike FIG. 6, FIG. 7 shows a case in which a plurality of multifunction devices are connected by a so-called network. Like the multifunction device shown in FIG. 6, the multifunction device shown in FIG. 7 may be used for both security paper and general paper, and security paper and general paper According to this, the print job is not proceeded differently, and the same print job is performed as shown in FIG. 6. As in the case of Fig. 6, the multifunction machine according to the present invention, in the multifunction machine, the paper path from the cassette or the manual feeder is picked up by the pick-up roller of the multifunction machine, fed, printed, and discharged at any position on the conveyance path of the series of paper A security paper detection sensor installed to detect paper passing through it in a contact or non-contact manner, and inside or outside the multifunction device, communicates with the security paper detection sensor through wired or wireless communication, and simultaneously with a server, multifunction device, or multifunction device. It is installed to communicate through wired or wirelessly, and not to affect the print job of the multifunction device. It is installed separately from the multifunction device, and the security paper detection sensor for the specific paper on the transport path where the security paper detection sensor is located. Based on the sensed value from, it determines whether the specific paper is security paper or plain paper, and if it is judged to be plain paper, includes a controller that delivers the result to the server. Data is delivered to the server. A person with a user ID of ABCDE or BCDEF will tell the server which print file, at what specific time, and on which printer (printer ID). In addition, in the data, which page of the corresponding printing task was printed on the plain paper is also provided. The administrator can check the user ID, file, or a specific page of the file printed on the plain paper through the data such as the abnormality transmitted to the server and stored. That is, when data is transmitted from the multifunction device to the server, the server may be configured to receive and store the data, and to immediately notify the administrator when information printed on the plain paper is received. In addition, a database (DB) may be provided to analyze the received/stored data to establish a future security policy. The drawing shows an example of a process for informing the administrator. As shown in the drawing, it is possible to notify the manager's PC or smartphone in real time.

As described above, according to an embodiment of the present invention, the controller 30 detects security paper at a time when there is no corresponding paper around the security paper detection sensor 20 during the transport path of the paper where the paper to be read starts from the cassette. By comparing the first detection value sensed by the sensor 20 and the one or more second detection values sensed by the security paper detection sensor 20 for paper to be read on the transport path, the comparison value is a predetermined criterion If it is abnormal, it is recognized as security paper, and if it is below a predetermined standard, it can be determined as general paper.

According to a preferred embodiment of the present invention showing an example in Figure 8, the PCB 25 is provided with a first optical sensor 23 for detecting the presence or absence of printing paper fed along the feeding direction of the printing paper, and feeding A security paper detection sensor 20 for detecting whether the printed paper is a security paper is sequentially installed. The security paper detection sensor 20 detects the first detection value at a time when the printing paper that is to be read by the first optical sensor 23 is not detected after the printing paper is not detected, and thereafter, the feeding path for a predetermined time. One or more second detection values are sensed for the print paper to be read on the image. Referring to FIG. 10, A is an output value of the first optical sensor 23, and when the printing paper enters and the output value of the first optical sensor 23 changes, the waveform A changes from high to low. At this point in time, the security paper detection sensor 20 detects the first detection value, and then the security paper detection sensor 20 detects the second detection value for the printing paper in the process of passing the printing paper for a predetermined time. Referring to FIG. 9, the distance between the first light sensor 23 and the security paper detection sensor 20 is preferably smaller than the distance between the printing paper and the printing paper following the printing paper in the paper feed path. The reason is that the first detection value should be detected when there is no printing paper at the position of the security paper detection sensor 20, but if the first detection value is greater than the distance between the end of the preceding printing paper and the leading end of the following printing paper, the first detection value will be detected. When printing paper is present, it can be detected, so it is impossible to accurately determine whether it is a security paper. According to a preferred embodiment, the PCB 25 may include one or more holes, and the first optical sensor 23 may be installed in one of the holes in consideration of the interval of the continuously fed printing paper of the printing apparatus. have. In addition, according to another embodiment, the PCB 25 includes one or more holes, and by installing a first optical sensor 23 in each hole, the PCB has two or more spaced apart along the feeding direction of the printing paper. It may include a first light sensor (23). In this case, in consideration of the interval between printing papers that are continuously fed from the printing device used, the control unit 40 may include a first optical sensor for detecting the presence or absence of the printed paper fed among the two or more first optical sensors 23 ( 23) is selected, and the security paper detection sensor 20 is controlled to detect the first detection value when the printing paper to be read by the selected first light sensor 23 is detected. According to a preferred embodiment, the security paper detection sensor 20 installed on the PCB 25 may be in the form of a bar installed perpendicular to the feeding direction of the printing paper, and in this case, the horizontal direction of the printing paper in a short time. As it can detect a wide surface, it can increase the accuracy in detecting security paper. The PCB 25 may use an FPCB 25, and the contact portion of the printing paper of the FPCB 25 may further include a ground metal pattern that contacts the printing paper to remove static electricity. According to a preferred embodiment, the PCB may be provided with a second optical sensor 24 behind the security sheet detection sensor 20 in the feeding path of the printing paper. In FIG. 10, B is an output value of the second optical sensor 24, and in this case, the security paper detection sensor 20 detects the second detection value until the second optical sensor 24 detects the printing paper. As a result, the security paper detection sensor 20 will detect a change in the magnetic field caused by the passing of the front portion of the printing paper entering. The security paper detection sensor 20 transmits the detected analog signal to the detection unit, and the detection unit converts the analog signal received from the security paper detection sensor 20 into a digital signal and transmits it to the controller 30. The controller 30 compares the first detection value and the one or more second detection values detected by the security paper detection sensor 20 to determine if the comparison value is greater than or equal to a predetermined standard, and determines that it is a security paper. Judging by. The security paper detection sensor having the above-described configuration may be installed at any position on the feeding path. That is, it is not necessary to determine whether to print on the paper being fed or to control the printing process according to the detection result of the security paper detection sensor, so the security paper detection sensor is not necessarily installed in the path prior to being printed on paper during the feeding path. . Alternatively, the printed paper may be installed on a path discharged after printing.

As described above, when the controller 30 determines that the paper on the feed path is plain paper, the controller 30 informs the multifunction machine 10 that the paper is plain paper and requests the user ID information from the multifunction machine 10 to multifunction machine 10 User ID information is provided from. The controller 30 transmits the user ID information provided from the multifunction apparatus 10 to the server 40, and the server 40 stores the user ID information printed on the plain paper. In some cases, the server 40 may display user ID information printed on plain paper. Therefore, the administrator can recognize that the user has printed on the plain paper through the server 40, and can directly check the content printed on the plain paper if necessary.

As described above, according to another embodiment of the present invention, the security sheet detection sensor 20 is provided at a predetermined position inside the cassette 12, and the controller 30 is stored in the cassette 12 and then picked up by a pickup roller. It is possible to determine whether it is a security paper or a general paper by acquiring the detection value of the topmost paper that is picked up and moved to start feeding. As described above, when the controller 30 determines that the uppermost paper that is picked up in the cassette 12 and starts to move is a plain paper, the controller 30 informs the multifunction machine 10 that the paper is a plain paper and the user of the multifunction machine 10 User ID information is provided from the multifunction apparatus 10 by requesting ID information. The controller 30 transmits the user ID information provided from the multifunction apparatus 10 to the server 40, and the server 40 stores the user ID information printed on the plain paper. In some cases, the server 40 may display user ID information printed on plain paper. Therefore, the administrator can recognize that the user has printed on the plain paper through the server 40, and can directly check the content printed on the plain paper if necessary.

The security system of the multifunction device according to an embodiment of the present invention may further include a security gate 70. In the security gate 70, when the user contacts the user ID card to the security gate 70 to go out through the security gate 70, the security gate 70 provides the user ID information to the server 40 and the server In step 40, the user ID information provided from the security gate 70 is checked, and the security gate 70 is notified of whether the user is a user who printed on plain paper. Therefore, it is possible to check whether the security gate 70 is a user who printed on the plain paper, so that the user who printed on the plain paper can control the security content to be printed on the plain paper.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be implemented by anyone who has ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, such changes are within the scope of the claims.

1, 10: All-in-one
2, 20: Security paper detection sensor
3: Firmware
4, 60: PC
30: controller
40: Server
50: user terminal
70: security gate
80: Laser Scanner Unit (LSU)
11: Front cover
12: cassette
13: Printing paper outlet
14: MPT clutch
15, 19: Paper feed roller
15-1: Paper feed motor
16: First clutch
17: Registration clutch
17-1: Registration roller
18: Paper feed sensor
19-1: Separation roller
21: Paper in sensor
22: Write sensor
200: paper
201: OPC drum (OPC drum)
202: charging roller
203: Power supply unit
204: Developing roller
205: Sponge roller
206: Transfer belt
207: T2 roller
208: Thermostat
209: Thermistor
210: Heat roller
212: Pat
213: fuser belt
214: second thermistor

Claims (10)

It is a security system for multifunction devices that use security paper to communicate with the server by wire or wirelessly.
Installed to detect paper passing through the conveying path at any position on the conveying path of a series of paper where paper is picked up, fed, printed and discharged by the pick-up roller of the multi-function machine from the cassette or manual feeder in the multifunction machine, so that it can be detected by contact or non-contact A security paper detection sensor;
It is installed inside or outside the multifunction device to communicate with the security sensor by wire or wireless, and to communicate with the server, through the multifunction device or through the multifunction device, wired or wirelessly, and not affect the printing operation of the multifunction device. It is installed separately from the multifunction machine, and determines whether the specific paper is security paper or general paper based on the detection value from the security paper detection sensor for the specific paper where the security paper detection sensor is located on the transport path. A security system for a multifunction device using security paper, comprising a controller that delivers the results to a server when judged to be plain paper. According to claim 1,
The controller is a security system for a multifunction device characterized in that it transmits user ID information for performing a print job to a plain paper together with a result determined as plain paper. According to claim 2,
The controller is a security system for a multifunction device characterized in that it transmits page information that has been attempted to be printed on plain paper during an ongoing print job to a server. According to claim 2,
The controller is a separately installed security gate, and the security system of the multifunction device characterized in that the user ID information is transmitted through the server to the plain paper. The method according to any one of claims 1 to 4,
In the process of the paper to be read, the controller detects the first detection value detected by the security paper detection sensor when there is no corresponding paper around the security paper detection sensor in the process of being transported on the transport path, and the paper to be read on the transport path. The security system of a multifunction device characterized by comparing one or more second detection values sensed by a security paper detection sensor against a security paper if the comparison value is greater than or equal to a predetermined standard and reading it as general paper if it is below a predetermined standard. . Print documents by using one or more servers, one or more multifunction devices that use wired or wireless communication with the server and using security paper, and security paper, which includes a security gate that can detect security paper and not general paper. As a security system to prevent the leakage of information by,
The multifunction machine,
Installed to detect paper passing through the conveying path at any position on the conveying path of a series of paper where paper is picked up, fed, printed and discharged by the pick-up roller of the multi-function machine from the cassette or manual feeder in the multifunction machine, so that it can be detected by contact or non-contact A security paper detection sensor;
Installed inside or outside the multifunction device, it is installed to communicate with the security sensor by wire or wireless, and to communicate with the server, through the multifunction device or through the multifunction device, wired or wirelessly. It is installed separately from the multifunction machine, and determines whether the specific paper is security paper or general paper based on the detection value from the security paper detection sensor for the specific paper where the security paper detection sensor is located on the transport path. Includes a controller that delivers the result to the server when judged to be plain paper;
The server is a security system, characterized in that for storing the information received from the controller, The method of claim 6,
The server, the security system characterized in that it stores the user ID information for performing a print job to the plain paper together with the result determined as the plain paper. The method of claim 7,
A security system, characterized in that the server stores page information that has been attempted to be printed as plain paper during an ongoing print job. The method of claim 7,
The server, as a security gate, security system characterized in that it transmits the user ID information for performing a print job to the plain paper. The method according to any one of claims 6 to 9,
In the process of the paper to be read, the controller detects the first detection value detected by the security paper detection sensor when there is no corresponding paper around the security paper detection sensor in the process of being transported on the transport path, and the paper to be read on the transport path. A security system characterized by comparing one or more second detection values detected by a security paper detection sensor with respect to a security paper if the comparison value is greater than or equal to a predetermined criterion and general paper if the comparison value is below a predetermined criterion.

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