KR20060016850A - File printing method for tamper proof and image forming apparatus with tamper proof function - Google Patents

Abstract

A method of printing a file for tamper proof and an image forming apparatus having a tamper proof function are disclosed. In the method of printing a file for preventing tampering according to the present invention, generating a print target data, determining whether to print a file of the print target data, and determining that the print target data is to be file printed, inserts a security code into the print target data. And printing a mark indicating authenticity of the data to be printed on the printing paper, depending on whether the data to be printed includes the security code. This can prevent forgery and tampering of the document.

Image forming apparatus, forgery, tampering, security code, encryption, original, copy

Description

File printing method for preventing alteration and image forming apparatus having alteration preventing function}

1 is a block diagram of a file printing system for tamper proof;

2 is a view showing a user interface of a printer driver according to an embodiment of the present invention,

3 is a flowchart illustrating a file printing method for tamper proof according to the present invention;

4 is a flowchart for explaining a modulation prevention method of an image forming apparatus according to the present invention; and

5A to 5B illustrate the authenticity indication according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: computer 110: application program unit

120: printer driver unit 130: printer interface unit

200: printer 210: computer interface unit

220: security code reader 230: control unit                 

240: printing unit

The present invention inserts a security code into the data to be printed according to whether the file is printed, and displays the authenticity of the data to be printed, thereby printing a file for preventing tampering and preventing images from being tampered with. It relates to a forming apparatus.

In general, a printing system includes a computer having an application program for generating print object data, an image forming apparatus driver for converting and compressing the print object data into instructions that can be interpreted by the image forming apparatus, and a print object data compressed from the computer. And an image forming apparatus for receiving, decompressing, and printing the print target data.

As described above, when the print target data is generated by using an application program, the user can use one of a normal port printing function provided through the image forming apparatus driver and a file printing function for generating an output file (* .prn). You can select to print the job.

In the case of using the file printing function, the same contents can be printed several times using the stored output file. However, there is a possibility of manipulation of the stored output file, and thus there is a problem of forgery and forgery of the document.

In particular, in the case of downloading and using a digitally authenticated document through the Internet, the user is likely to print and use the document several times. Such documents are also exposed to the possibility of forgery and alteration, and are not desirable from the point of view of the issuing organization because the authenticity of the documents is unknown.

Accordingly, an object of the present invention is a file printing method for preventing tampering by inserting a security code into the print target data when the file is to be printed, and when printing the print target data into which the security code is inserted. An object of the present invention is to provide an image forming apparatus having a tamper-proof function for indicating the authenticity of an image.

According to an aspect of the present invention, there is provided a file printing method for preventing tampering, generating print target data, determining whether to print a file of print target data, and determining that the print target data is to be file printed. And inserting a security code into the data, and printing a mark indicating the authenticity of the data to be printed on the printing paper, depending on whether the data to be printed includes the security code.

Preferably, in the printing step, if the print target data includes a security code, a copy mark is printed on the print paper, and if the print target data does not include a security code, the original mark is printed on the print paper. Can be.

On the other hand, the image forming apparatus having a tamper-proof function according to the present invention is an interface unit for receiving the print target data, a security code reading unit for determining whether or not the security code of the input print target data, a printing unit for printing the print target data And a control unit for controlling the printing unit to print an indication indicating the authenticity of the data to be printed on the printing paper, depending on whether the security code of the data to be printed is included.

Preferably, the control unit may control the printing unit to print a copy display on the printing paper, if the security code is included in the print target data.

Also preferably, the control unit may control the printing unit to print the original display on the printing paper when the security target data does not include the security code.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of a file printing system for preventing tampering, and FIG. 2 is a diagram showing a user interface of a printer driver according to a preferred embodiment of the present invention.

The file printing system for preventing tampering in this embodiment includes a computer 100 and an image forming apparatus such as a printer 200.

The computer 100 includes an application program unit 110, a printer driver unit 120, and a printer interface unit 130. The printer 200 includes a computer interface unit 210, a security code reading unit 220, and a control unit. 230, a printing unit 240.

The application program unit 110 generates print target data according to a user's input, transmits a print command to the printer driver 120, and provides the generated print target data.

The printer driver 120 receives the print command and the print target data from the application program unit 110 and converts the data into data recognizable by the printer 200.

The printer driver 120 provides various menus for setting and changing the driving conditions of the printer 200. For example, a menu for selecting paper settings, print quality, and the number of prints is provided. A general menu provided by the printer driver 120 will be described with reference to FIG. 2.

Referring to FIG. 2, a user may set and change a print function A as well as a print range, the number of copies, a printer name to be used, and a printing method through a user interface provided by the printer driver 120. have.

When the print function A is selected as a file, the printer driver 120 inserts a security code into the print target data received from the application program 110 and converts the data into data recognizable by the printer 200.

The print command and the print target data converted by the printer driver 120 into data (bitmap data) recognizable by the printer 200 are transmitted to the printer 200 through the printer interface unit 130.

The printer interface unit 130 may be connected to the printer 200 to support data communication between the computer 100 and the printer 200.

For example, the printer interface unit 130 may transmit bitmap data generated by the printer driver 130 to the printer 200 or may receive operation state information of the printer 200 transmitted from the printer 200. Can be.

The computer interface unit 210 may be connected to the computer 200 to support data communication between the computer 100 and the printer 200. For example, the printer 200 receives a print command and print target data transmitted from the computer 100 through the computer interface 210.                     

The security code reading unit 220 reads the security code from the print target data input through the computer interface unit 210 and determines whether the print target data includes the security code.

The control unit 230 controls the printing unit 240 to print an indication indicating the authenticity (original or copy) of the data to be printed on the printing paper, depending on whether the security code of the data to be printed is included.

For example, if it is determined by the security code reading unit 220 that a security code is included in the print target data, the controller 230 considers the print target data to be a copy, together with the print target data on the print paper. The printing unit 240 is controlled to print the copy display.

In addition, if it is determined by the security code reading unit 220 that the security target data does not include the security code, the controller 230 considers that the data to be printed is the original, and prints the original along with the data to be printed on the printing paper. The printing unit 240 is controlled to print the display.

The printing unit 240 prints the print target data provided from the control unit 230 on the printing paper. At this time, the printing unit 240 prints an original or a copy mark on one side of the printing paper in printing the print target data by the control command of the control unit 230.

3 is a flowchart illustrating a file printing method for tamper proof according to the present invention. Here, with reference to Figs. 1 to 3, a file printing method for preventing tampering according to the present invention will be described.                     

The print target data is generated from the application program unit 110 by the user's input (S300), and the printer driver unit 120 is a file of the user interface provided to the user according to whether the print function A is selected or not. It is determined whether the data is to be port printed or file printed (S310).

If it is determined that the printer driver 120 prints the file to be printed, the printer driver 120 inserts a security code into the print object data received from the application program unit 110 (S320).

The printer driver unit 120 transmits the print target data into which the security code is inserted to the printer 200 through the printer interface unit 130 together with the print command, so that printing is performed by the printer 200 (S330). .

In step S310, if it is determined that the printer driver 120 port prints the print target data, the printer driver 120 does not insert the security code into the print target data received from the application program unit 110, but through the printer interface unit 130. By transmitting to the printer 200, printing is performed by the printer 200 (S330).

4 is a flowchart illustrating a modulation prevention method of the image forming apparatus according to the present invention. Herein, the modulation prevention method of the image forming apparatus according to the present invention will be described with reference to FIGS. 1 and 4.

The printer 200 receives a print command and print target data from the computer 100 by data communication between the computer interface 210 and the printer interface 130 (S400).                     

The print target data received through the computer interface unit 210 is transmitted to the security code reader 220, and the security code reader 220 reads the security code from the print target data to determine whether the security code is included. (S410).

If it is determined that the security code is included in the print target data, the control unit 230 controls the print unit 240 to print a copy mark together with the print target data, and the print unit 240 prints on the print paper. The print target data and the copy display are printed (S420).

In operation S410, when it is determined that the security target data does not include the security code, the controller 230 controls the printing unit 240 to print the original display together with the data to be printed, and the printing unit 240. ) Prints the target data and the original display on the print paper (S430).

5A to 5B illustrate the authenticity indication according to a preferred embodiment of the present invention.

As described above, when the user selects the print function A to a file in the user interface shown in FIG. 2 and issues a print command, the printer driver 120 inserts a security code into the corresponding print target data.

After the print target data having the security code inserted therein is transmitted to the printer 200, it is determined by the security code reader 220 that the print target data is the print target data inserted therein, and the controller 230 determines that the print target data is a copy. To be considered.

In order to distinguish the print target data considered as the copy from the original, a copy mark B is printed on the upper side of the printing paper as shown in Fig. 5A. This is not necessarily limited thereto, and any phrase indicating that it is not an original such as 'COPY' is irrelevant.

In addition, when a user issues a print command without selecting the print-to-file function (A) in the user interface shown in FIG. 2, the printer driver 120 prints the data to be printed. It transmits to the printer 200 through the interface unit 130.

The print target data transmitted to the printer 200 is determined by the security code reader 220 not to include a security code, and the controller 230 considers the print target data to be the original.

The original object C is printed on the upper side of the printing paper as shown in FIG. 5B to indicate that the print target data considered as the original is an original. It is not necessarily limited to this, and any phrase that may indicate the original is irrelevant.

In FIG. 5A to FIG. 5B, an indication (copy (B) or original (C)) indicating the authenticity of the document is to be printed on the upper side of the printing paper, but this is not necessarily limited thereto. It may be printed on any part of the printing paper within the range.

In the present embodiment, the print target data with the security code is regarded as a copy, but the print target data with the security code is regarded as a copy, and the print target data without the security code is regarded as a copy. have.

In addition, in the image printing apparatus and the image forming apparatus having a tamper-proof function for tamper-proof according to a preferred embodiment of the present invention will be described with an example that the print target data is generated directly from the application program unit 110 by a user input. However, it is also applicable to printing data provided via the Internet.

As described above, the file printing method for preventing tampering according to the present invention prevents forgery and tampering of the print target data corresponding to the original by inserting a security code into the print target data when the print function is selected as a file.

In addition, the image forming apparatus having a tamper-proof function according to the present invention can easily recognize whether the original or the copy of the printed matter by printing the print target data and the original or copy marks together when printing the print target data inserted with the security code. Can be.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications may be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Claims (5)

Generating data to be printed; Determining whether to print a file of the print target data, and inserting a security code into the print target data when determining that the print target data is to be file printed; And And printing a mark indicating the authenticity of the data to be printed on a sheet of printing paper, depending on whether the security code includes the security code of the data to be printed. The method of claim 1, In the printing step, when the print target data includes a security code, a copy mark is printed on the print paper, and when the print target data does not include a security code, a print mark is displayed on the print paper. Method for printing a file for tamper proof, characterized in that for printing. An interface unit for receiving data to be printed; A security code reading unit determining whether the input print target data includes a security code; A printing unit for printing the data to be printed; And And a control unit which controls the printing unit to print an indication indicating the authenticity of the data to be printed on a print paper, depending on whether the security target includes the security code of the data to be printed. . The method of claim 3, wherein And the control unit controls the printing unit to print a copy display on the printing paper when the security target data includes a security code. The method of claim 3, wherein And the control unit controls the printing unit to print an original display on the printing paper when the security target data does not include a security code.

Images