JP2002268854A - System and method for printer security - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control confidential data of a printer connected to a network environment so as to be outputted from an output device other than an output device that receives an output request for the confidential data when there is an other data output request in the output device that receives the original request. SOLUTION: This system is provided with a security managing part 106 for printing confidential data and preventing the printed confidential data from being outputted until an output instruction is received in printing and outputting the data, a data output managing part 107 for managing a data output state on the basis of an output from the managing part 106, and a data output controlling part 108 for preventing an output request from being received from any output device 103 to 105 other than particular output devices 103 and 105 while the particular output devices 103 to 105 print out the confidential data in response to an output request from the managing part 107.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a printer connected to a network, a copying machine having a printing function,
Or, when printing out confidential confidential data from a facsimile, etc., manage the output state of the data so that the corresponding data cannot be printed out until an output instruction is issued. A printer security system that does not accept output requests and when there is a data output instruction to enter the standby state, accepts other output requests and prints out confidential data without accepting output requests from specific outputs. And a printer security method.

[0002]

2. Description of the Related Art Conventional printer systems include, for example,
As a method of protecting confidential data to be printed out in an environment in which a plurality of computers and a printer are connected via a network, a print data is transmitted to a printer with a user identifier ID added thereto and temporarily stored in a storage unit of the printer. There is something.

In the printer system, encryption is performed when the data is temporarily stored in the storage unit of the printer, and a user identifier ID is input from the operation unit of the printer at the time of output. If the user ID matches, the printout is performed. There is something to do.

Further, in the conventional printer system, a card reader is provided in the printer in place of the user identifier ID, and the card is read by the card reader so that the printer can print out when there is an output permission. There is also a printer system.

[0005] The above printer system is disclosed, for example, in Japanese Patent Application Laid-Open No. 6-124178 (security method for printer data). In the present invention,
Some print data generating apparatuses encrypt print data, add a user identifier ID or the like to the encrypted data, and transfer the encrypted data to a printer. The printer is configured to be able to decrypt the encrypted data based on the user identifier ID.

[0006]

However, in these conventional printer systems, the security of data from a computer is protected by encryption of data held in an output device and by a user identifier ID at the time of output. It's just security. In these printer systems, there are systems in which consideration is not given to printing and outputting.
For this reason, when the paper is printed and output, it may be easy for other people to easily see it.

In the invention described in, for example, JP-A-6-124178, security from printing to output is completely unprotected.
Even a person other than the person in charge may know confidential data output from the printer without being aware of it. For example, when a printer is shared between multiple sections and confidential content is issued, the clerk of an unrelated section who is just in front of the printer should be aware of it. In some cases, it is easy to see what is printed out without knowing the secret information.

SUMMARY OF THE INVENTION The present invention solves the above-described problem in the conventional example, in a printer connected to a network environment, when there is an output request for other data to an output device for which secret data is requested to be output. It is an object of the present invention to provide a printer security system and a printer security method for controlling output from another output device.

Further, according to the present invention, when confidential data is output, if the single-sided printing is performed so that the printed surface is not touched by human eyes as much as possible, the printed surface is ejected so that the printed surface is reversed.
It is an object of the present invention to provide a printer security system and a printer security method for outputting a blank sheet at the end in the case of double-sided printing.

[0010]

Means for Solving the Problems The above-mentioned problems are solved,
In order to achieve the object, a printer security system according to the first aspect of the present invention includes a printer connected to a network, a copier having a print function, an output device section such as a facsimile, and confidentiality information transmitted from the output device section. When printing and outputting confidential data with security, a security function unit that prints the corresponding data so that it cannot be output until an output instruction is given, and a data output state based on the output from the security function unit A data output management unit that manages data, and outputs from other output device units other than the specific output device unit while printing and outputting confidential data from a specific output device unit in response to an output request from the data output management unit A data output instruction not to accept the request and to put the output from the specific output device unit in a standby state is issued to the data output tube. A data output for receiving an output request from another output device unit different from the specific output device unit without receiving an output request from the specific output unit and printing and outputting confidential data. And a control unit.

In the printer security system according to the first aspect of the invention, when printing and outputting confidential confidential data from the output device section, the corresponding data is printed and output until an output instruction is given. In response to an output request from the data output management unit, print and output confidential data from a specific output device unit, and do not accept output requests from other output device units other than the specific output device unit. When there is a data output instruction from the data output management unit to put the output from the specific output device unit in a standby state, another output device different from the specific output device unit without accepting an output request from the specific output unit Control so that confidential data can be printed and output in response to output requests from other departments, and output other data to output devices that require confidential data output. It can be controlled so as to be outputted from another output device if there is determined.

According to a second aspect of the present invention, there is provided a printer security system, comprising: a printer connected to a network; a copying machine having a printing function; or an output device such as a facsimile; and confidential confidential data from the output device. When outputting, a security function unit that prevents output of corresponding data until an output instruction is given, a data output management unit that manages an output state of data based on an output from the security function unit, While outputting the confidential data from the specific output device unit in response to the output request from the output management unit, the specific output device unit does not accept output requests from other output device units other than the specific output device unit. When there is a data output instruction from the data output management unit to put the output from the standby state, the specific output unit A data output control unit that controls output of confidential data by receiving an output request from another output device unit different from the specific output device unit without receiving a power request, and a storage unit that stores the confidential data. An identification identifying whether or not the data is confidential data having the same security identifier when stored in a storage unit or when an output request is subsequently made to the output device unit during output of the confidential data. And a unit.

In the printer security system according to the second aspect, the output of the corresponding data is disabled until the output instruction is issued, the output state of the data is managed based on the output from the security function unit, and the output request is output. To output requests from other output device units other than the specific output device unit while confidential data is being output from the specific output device unit. When there is a data output instruction, control is performed such that an output request from another output device unit different from the specific output device unit is accepted without receiving an output request from the specific output unit and confidential data is output, and confidential data is stored. If the data is stored or the output device unit is subsequently requested to output the confidential data while the confidential data is being output, the data is transmitted to the same security. Identify whether or not the data is confidential data of the identifier, and control the confidential data to be output from other output devices when there is a request for output of other data to the output device that has requested output. Can be.

According to a third aspect of the present invention, in the printer security system according to the first or second aspect, when the confidential data is output to the output device, a printing surface is visible. It is characterized by having an output instructing unit for instructing that the printing surface should be on the back side so that it does not occur.

In the printer security system according to the third aspect of the present invention, when the confidential data is output, an instruction is given such that the printing surface is on the back side so that the printing surface is not visible, and the confidential data is requested to be output by an output device. Can be controlled to be output from another output device when there is a request to output other data. Further, in the case of single-sided printing so that the printed surface is not touched by human eyes as much as possible when the confidential data is output, it is possible to discharge the printed surface so that the printed surface is reversed.

A printer security system according to a fourth aspect of the present invention is the printer security system according to the first or second aspect, wherein the confidential data is output to the output device unit by double-sided printing. It is characterized in that a blank sheet is discharged after outputting a page.

In the printer security system according to the fourth aspect of the invention, when confidential data is output by double-sided printing, a blank sheet is ejected after output of the last page, and the output device is requested to output the confidential data. When there is a request for output of other data, the data is controlled to be output from another output device. In the case of double-sided printing so that the printed surface is not touched by human eyes as much as possible when the confidential data is output, a blank sheet can be output last.

According to a fifth aspect of the present invention, there is provided a printer security method, comprising: an output step of printing and outputting from a printer connected to a network, a copying machine having a printing function, or a facsimile; When printing and outputting sensitive confidential data, a security function step that regulates printing and outputting the corresponding data until an output instruction is given, and an output state of the data based on the output from the security function step A data output management step of managing the output request, and receiving an output request from another output step other than the specific output step while outputting confidential data from the specific output step in response to the output request from the data output management step. Data output instruction that the output from the specific output step is to be in a standby state. A data output control step of accepting an output request from another output step different from the specific output step without receiving an output request from the specific output step and printing and outputting confidential data. And characterized in that:

In the printer security method according to the present invention, when printing and outputting confidential confidential data from a printer connected to a network, a copier having a printing function, a facsimile, or the like, Restricts printing and output of applicable data until output is instructed, manages data output status based on output from security function process, and outputs confidential data from specific output process in response to output request During this process, when an output request from another output process other than the specific output process is not accepted, and there is a data output instruction from the data output management process to put the output from the specific output process in a standby state, the specific An output request from another output process different from the specific output process is received without receiving an output request from the The controlled to be printed and output, can be controlled so as to be outputted from another output device if a power demand of other data to an output device that sensitive data a request for output.

According to a sixth aspect of the present invention, there is provided a printer security method, comprising the steps of: outputting a printer, a copier having a printing function, a facsimile, or the like, connected to a network constituting a distributed environment; When printing and outputting confidential data having confidentiality, a security function step that regulates printing and outputting of the corresponding data until an output instruction is issued, and data output based on the output from the security function step A data output management step of managing an output state; and an output request from another output step other than the specific output step while printing and outputting confidential data from the specific output step in response to the output request from the data output management step. Not accept,
When there is a data output instruction from the data output management step indicating that the output from the specific output step is to be in a standby state, output from another output step different from the specific output step without accepting an output request from the specific output step A data output step of receiving the request and controlling the confidential data to be printed and output, a storage step of storing the confidential data, and the output being stored in the storage step or during the output of the confidential data. When an output request is subsequently made to the step, an identification step of identifying whether or not the data is confidential data with the same security identifier is included.

In the printer security method according to the present invention, when printing and outputting confidential confidential data from the output step, the corresponding data is printed and output until an output instruction is given. Controls the output state of data based on this output, and prints confidential data from the specific output process in response to the output request from the management output and outputs it from other output processes other than the specific output process. When there is a data output instruction that the output request is not accepted and the output from the specific output process is set to the standby state, output from another output process different from the specific output process is performed without accepting the output request from the specific output process. Control to accept requests and print and output confidential data, store confidential data and store it in the storage process or during output of confidential data When subsequently output request to the force step have been made to identify whether the data is confidential data of the same security identifier. Thus, it is possible to control the confidential data to be output from another output device when there is an output request for other data to an output device that has requested output.

A printer security method according to a seventh aspect of the present invention is the printer security method according to the fifth or sixth aspect, wherein the output step includes the step of printing and outputting confidential data. An output instructing step of instructing the printing side to be on the back side so that the printing side cannot be seen; and a step of, when outputting confidential data by double-sided printing, discharging a blank sheet after outputting the last page. It is characterized by the following.

In the printer security method according to the present invention, in the output step, when printing and outputting confidential data, it is instructed that the printing surface is on the back side so that the printing surface is not visible. When confidential data is output by double-sided printing, a blank sheet can be discharged after the output of the last page. Thereby, when there is an output request for other data to an output device that has a request to output confidential data, control is performed so that the output is output from the other output device.
In the case of double-sided printing so that the printed surface is not touched by human eyes as much as possible when the confidential data is output, a blank sheet can be output last.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a printer security system and a printer security method according to the present invention will be described below in detail with reference to the accompanying drawings.

(Configuration of Printer Security System)
First, the configuration of the entire printer security system according to the embodiment of the present invention will be described. FIG. 1 is a block diagram functionally showing the overall configuration of a printer security system according to the embodiment of the present invention. In the printer security system 100, computers 101 and 102 are connected by a LAN, and output devices 103 to 105 are connected.

This printer security system 100
Are computers 101 and 102 based printers connected to a network as output devices 103 to 105,
It is composed of a copying machine having a printing function, a facsimile or the like. When printing and outputting confidential confidential data from the output devices 103 to 105, the security management unit 106 prints out the corresponding data until the output devices 103 to 105 are instructed to output, so that the output cannot be performed. It is supposed to.

A data output management unit 107 in each of the computers 101 and 102 manages a data output state based on an output from the security management unit 106. A specific output device 1 in response to an output request from the data output management unit 107
Output devices 103 other than the specific output devices 103 to 105 while printing and outputting confidential data from the devices 03 to 105
１０５105 is not accepted.

The computer 1 sends a data output instruction to put the output from the specific output device 103 to 105 in a standby state.
01, 102, the output device 103 to 105 does not accept an output request from a specific output, and outputs an output request from another output device 104 different from the specific output device (for example) 103. Data output control unit 1 so that it can accept and print confidential data and output it
08 is controlled.

FIG. 2 is a block diagram of an output device having a security function in FIG. It comprises a printer 201 of a computer system. This printer 20
The first data determination unit 202 receives the output data information and determines whether the data is confidential data. ID
The data storage unit 203 manages the ID of confidential data.

The ID data input section 204 is adapted to input an ID for a confidential data output request. I
The D data identification unit 205 identifies the input ID. The operation / display unit 206 transmits ID data based on ID identification information and storage information.

The storage device & storage device control section 208 stores and controls the received data. The encryption unit 207 encrypts the data when the data is confidential data. The decryption unit 209 decrypts the encrypted data. Data output unit 2
Numeral 10 forms output data. The output data state management unit 211 manages the output state and information for determining whether the data is confidential data. CPU
(Not shown) controls the entire printer 201. It comprises a CPU (not shown).

From the computers 101 and 102 in FIG.
When there is an output request, the data determination unit 202 determines whether output is possible. The determination as to whether output is possible is made based on information of the output data state management unit 211. The output data state management unit 211 manages data to be output and information on whether the data is confidential data. The information is managed based on information on the state of data output by the data output unit 210, data reception by the data determination unit 202, and information on whether the data is confidential data.

As described above, when the data determination unit 202 determines that the data can be output and receives the data, it determines whether the data is confidential data. If the data is determined to be confidential data, the data
And output data. The divided ID data is I
The storage management is performed by the D data storage unit 203.

If the confidential data is confidential data, the data is encrypted by the encryption unit 207. If the data is not confidential, the data is not encrypted. These data are stored in the storage device & storage device control unit 208. If the data is not confidential data, the data stored in the storage device & storage device control unit 208 is sequentially output.

The data is not decrypted by the decryption unit 209, but is output as it is, and the data output unit 210 forms and outputs the data. If the data is confidential data, the process waits until there is an instruction to output confidential data. For the confidential data, the ID data is stored in the ID data storage unit 20.
3, the output data is stored in the storage device & storage device control unit 208 in an encrypted state, and the status management of confidential data and other data is performed by the output data status management unit 211.
It is in a state managed by.

The output instruction is given by the output instruction from the ID data input unit 204 and the input of the ID. The ID input to the ID data input unit 204 is used by the ID data identification unit 205 to determine whether or not there is corresponding confidential data. The determination as to whether or not there is the corresponding confidential data is made based on the ID information managed in the ID data storage unit 203.

If the data is confidential data corresponding to the input ID, the ID data identification unit 205 issues an output request to the storage device & storage device control unit 208. If there is no corresponding data, a message indicating the content is displayed on the operation / display unit 206 on the display unit.

Upon receiving the secret data output request, the storage device & storage device control unit 208 outputs data to the decryption unit 209. The decryption unit 209 decrypts data and outputs the data to the data output unit 210. The data output unit 210 forms and outputs data. The output status is output to the output data status management unit 211.

The output data state management unit 211 is provided with information on the data received by the data judgment unit 202 and the data output unit 2.
The information of 10 manages the state of the data and whether or not the data is confidential data. Such an output device having a security function and the computers 101 and 102 in FIG. 1 for instructing data output are connected to a network (LA).
N).

FIG. 3 is a flowchart for explaining the operation in the embodiment of the present invention. In the following process,
Step 310 is described as ST310.

First, enter, a data output request signal is received in ST310, and it is determined in ST320 whether or not there is confidential data. If there is confidential data, it is determined whether the confidential data is stored in the storage device of the printer or whether the confidential data is being output. The determination is made by the output data state management unit 211 in FIG.
It is performed by

If no confidential data is output (No), the process proceeds to ST340 to receive the data, and the data determination unit 202 determines whether the data is confidential data. The output data state management unit 211 determines in ST3
At 50, the state is managed based on the information.

In ST360, the data is received and stored in storage device & storage device control section 208. Next, the process proceeds to ST370, in which data accumulation is performed as described above.
D and output data are separately managed. The output data is stored after being encrypted, if necessary, depending on whether it is confidential data or not.

In ST360, when the data can be output, the data is output. The output when the data is confidential data is output by the input of the ID as described above, and there is no input of the ID. Also, in ST320, if confidential data is stored or being output (Yes), control is performed so that data reception is not accepted and data is output to another output device.

By performing the above processing, when there is output of confidential data to a printer connected to the network, it is possible to control to output data to another printer.

(Operation of Modification) FIG. 4 is a flowchart showing the operation of a modification of the embodiment of the present invention. FIG.
ST for the same operation as the flowchart in
Numbers are given, and processing of different ST numbers will be described in detail.

In ST310, the output device receives a data output request signal according to a data output instruction from the computer. In ST320, it is determined whether the confidential data is stored in the storage device of the printer or whether the confidential data is being output.

If there is no output of confidential data (No),
The reception of the data is received (ST330), and whether the data is confidential data is determined by the data determination unit 20 in FIG.
2 and the status is managed by the output data status management unit 211 (ST340).

In ST 350, the data is received and stored in storage device & storage device control section 208. ST
At 360, if the data can be output, the data is output. The output when the data is confidential data is output by inputting an ID as described above, and enters a wait state when no ID is input.

In ST320, if confidential data is output (Yes), data determination section 202 determines whether or not the same confidential data ID exists from the information in output data state management section 211 (ST400). If it is determined in ST400 that the IDs are the same (Yes),
In ST330, data reception is accepted.

In this modification, when it is determined in ST400 that the IDs are not the same (No), control is performed so that data reception is not accepted and data is output from another output device connected to the network. Do.

(Output of Confidential Data) The output of confidential data will be described with reference to the processing flow of FIG. ST51
At 0, a request to output confidential data is received. ST52
0, ID input at the time of request for output of confidential data
Is determined as the ID of the data held in the printer.

In ST520, if they do not match (N
o), the process proceeds to ST560 and displays a message indicating that output is not possible. If they match (Yes), it is determined in ST530 whether the output mode is single-sided printing or double-sided printing. If it is single-sided printing (Yes), printing is performed in ST540. In step ST550, the printed sheet is discharged so that the printing surface is turned over at the time of discharging.

In ST530, if it is not single-sided printing (Yes), printing and discharging are performed in ST570. In ST580, it is determined whether or not the output of the last page has been completed. If it is not the last page (No), ST5
Returning to step 70, printing is repeated. If it is the last page in ST580 (Yes), a blank page is output last (ST580).
590).

In the embodiment and the modified example described above, in the printer connected to the network environment,
Control is performed so that confidential data is output from another output device when there is an output request for other data to an output device that has a request for output. Also, when confidential data is output, if it is single-sided printing so that the printing side is not touched by human eyes as much as possible, it is ejected so that the printing side is turned back,
In the case of double-sided printing, a blank sheet is output at the end. By doing so, the confidentiality can be further enhanced by reducing the output of the confidential data from being seen by human eyes.

[0056]

According to the first aspect of the present invention, when printing and outputting confidential confidential data from the output device section, the corresponding data is printed and output until an output instruction is given. In response to an output request from the data output management unit, print and output confidential data from a specific output device unit, and do not accept output requests from other output device units other than the specific output device unit. When there is a data output instruction from the data output management unit to put the output from the specific output device unit in a standby state, the output request from the specific output unit is not accepted, and another output device unit different from the specific output device unit does not accept the output request. Control so that confidential data can be printed and output, and if there is an output request for other data to an output device that has a request to output confidential data, it is output from another output device. It can be an effect that can be controlled to be.

According to the second aspect of the present invention, the output of the corresponding data is disabled until the output instruction is issued, the output state of the data is managed based on the output from the security function unit, and the output request is output. To output requests from other output device units other than the specific output device unit while confidential data is being output from the specific output device unit. When there is a data output instruction, control is performed such that an output request from another output device unit different from the specific output device unit is accepted without receiving an output request from the specific output unit and confidential data is output, and confidential data is stored. If the data is stored, or if a subsequent output request is made to the output device unit while the confidential data is being output, that data is output with the same security identifier Of confidential data can be controlled so that confidential data is output from another output device when there is an output request for other data to an output device that has a request for output. Can be played.

According to the third aspect of the present invention, when the confidential data is output, the output side is instructed so that the print side is on the back side so that the print side is not visible, and the confidential data is requested to be output. Can be controlled so as to be output from another output device when there is a request to output other data. In addition, if confidential data is output, if it is single-sided printing so that the printed surface does not touch the human eyes as much as possible,
There is an effect that the paper can be discharged so that the printing surface is reversed.

According to the fourth aspect of the present invention, when confidential data is output by double-sided printing, a blank sheet is ejected after the output of the last page, and other devices are requested to output confidential data. Is controlled to be output from another output device when there is a data output request. In addition, when confidential data is output, in the case of double-sided printing so that the printed surface is not touched by human eyes as much as possible, there is an effect that a blank sheet can be output at the end.

According to the fifth aspect of the present invention, when printing and outputting confidential confidential data from a printer connected to a network, a copier having a printing function, a facsimile, or the like, an output instruction is issued. Restricts printing and outputting of applicable data until a certain time, manages data output status based on output from security function process, and outputs confidential data from specific output process in response to output request In the meantime, when an output request from another output process other than the specific output process is not accepted, and there is a data output instruction from the data output management process to put the output from the specific output process in a standby state, the specific output process starts. Output request from another output process different from the specific output process without receiving the output request, so that the confidential data can be printed and output. Controlled, it is possible to obtain the effect that can be controlled so as to be outputted from another output device if the sensitive data is output request for other data to the output device a request for output.

In the printer security method according to the present invention, when printing and outputting confidential confidential data from the output step, the corresponding data is printed and output until an output instruction is given. To regulate
Based on this output, the output state of data is managed, and in response to an output request from the management output, confidential data is printed from a specific output process and output requests are accepted from other output processes other than the specific output process during output. When there is a data output instruction to put the output from the specific output process in the standby state, the output request from the other output process different from the specific output process is received without accepting the output request from the specific output process. Control so that confidential data can be printed and output, store the confidential data, and if the confidential data is stored in the storage process or if an output request is made to the output process during the output of the confidential data, Identify whether or not the confidential data has the same security identifier. This allows the confidential data to be output to another output device that has requested to output other data. Can be an effect that can be controlled so as to be output from the other output device if that.

According to the present invention, in the output step, when the confidential data is printed and output, it is instructed that the printed surface is on the back side so that the printed surface is invisible so that the confidential data is output. When outputting by double-sided printing, a blank sheet can be discharged after outputting the last page. Thereby, when there is an output request for other data to an output device that has a request to output confidential data, control is performed so that the output is output from the other output device. In addition, when confidential data is output, in the case of double-sided printing so that the printed surface is not touched by human eyes as much as possible, there is an effect that a blank sheet can be output at the end.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a computer and an output device connected to a network according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a printer having a security function according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating an operation according to the exemplary embodiment of the present invention.

FIG. 4 is a processing flowchart for permitting output when the same ID is used at the time of an output request to an output device holding confidential data.

FIG. 5 is a processing flowchart for outputting confidential data, in which the discharge is reversed for single-sided printing, and a blank page is output for double-sided printing.

[Explanation of symbols]

101, 102 Computers connected to a network 103 to 105 Output devices connected to a network 106 Security management unit 107 Data output management unit 108 Data output control unit 201 Network-connected printer 202 Data determination unit 203 ID data storage unit 204 ID data Input unit 205 ID data identification unit 206 Operation / display unit 207 Encryption unit 208 Storage device & storage device control unit 209 Decryption unit 210 Data output unit 211 Output data state management unit

Claims (7)

[Claims] An output device section such as a printer connected to a network, a copier having a printing function, or a facsimile, and when printing and outputting confidential confidential data from the output device section, an output instruction is given. A security function unit that prints the corresponding data until it is present and disables output; a data output management unit that manages a data output state based on an output from the security function unit; and While printing and outputting confidential data from the specific output device unit in response to the output request, the output request from the other output device unit other than the specific output device unit is not accepted, and the output from the specific output device unit is When there is a data output instruction from the data output management unit to put the device into a standby state, the output request from the specific output unit is not accepted and the A printer security system, comprising: a data output control unit that receives an output request from another output device unit different from the specific output device unit and controls so that confidential data can be printed and output. 2. An output device unit such as a printer, a copier having a print function, or a facsimile connected to a network, and when outputting confidential confidential data from the output device unit, the output device unit performs the processing until an output instruction is given. A security function unit for preventing output of data to be performed, a data output management unit for managing an output state of data based on an output from the security function unit, and a response to an output request from the data output management unit. While outputting the confidential data from the specific output device unit, an output request from another output device unit other than the specific output device unit is not accepted, and the output from the specific output device unit is set to a standby state. When there is a data output instruction from the data output management unit, the data output instruction is different from the specific output device unit without accepting an output request from the specific output unit. A data output control unit that controls output of confidential data by receiving an output request from another output device unit; a storage unit that stores the confidential data; and a storage unit that stores the confidential data. A printer security system, comprising: when an output request is subsequently made to the output device unit during output, an identification unit that identifies whether or not the data is confidential data with the same security identifier. . 3. The output device unit according to claim 1, further comprising: an output instruction unit for instructing the print surface to be on the back side so that the print surface cannot be seen when the confidential data is output. Item 3. A printer security system according to Item 2. 4. The printer according to claim 1, wherein when the confidential data is output to the output device section by double-sided printing, a blank sheet is discharged after outputting the last page. Security system. 5. An output step of printing and outputting from a printer, a copier having a print function, or a facsimile connected to a network, and printing and outputting confidential confidential data from the output step. A security function step of restricting printing and outputting of corresponding data until an output instruction is issued; a data output management step of managing an output state of data based on an output from the security function step; and the data output management While outputting confidential data from a specific output step in response to an output request from a step, an output request from another output step other than the specific output step is not accepted, and an output from the specific output step is output. When there is a data output instruction to enter the standby state from the data output management step, an output request from the specific output step is received. A data output control step of accepting an output request from another output step different from the specific output step without printing and printing and outputting confidential data. 6. A step of outputting a printer, a copier having a printing function, a facsimile or the like connected to a network constituting a distributed environment, and printing and outputting confidential confidential data from the output step. A security function step of restricting printing and outputting of the corresponding data until an output instruction is given; a data output management step of managing an output state of data based on an output from the security function step; While printing and outputting confidential data from the specific output step in response to the output request from the output management step, output requests from other output steps other than the specific output step are not accepted, and output from the specific output step is performed. When there is a data output instruction from the data output management step to put the device into a standby state, an output request from the specific output step A data output step of receiving an output request from another output step different from the specific output step without receiving the data, and performing control so that confidential data can be printed and output; a storage step of storing the confidential data; and An identification step of identifying whether the stored data is confidential data having the same security identifier when an output request is subsequently made to the output step during the output of the confidential data. A printer security method comprising: 7. An output instructing step for instructing the printing surface to be on the back side so that the printing surface is not visible when printing and outputting the confidential data, and outputting the confidential data by duplex printing. 7. The printer security method according to claim 5, further comprising the step of: discharging a blank sheet after outputting the last page.