JP4526254B2 - Image processing method, image processing apparatus, information processing apparatus, and computer program - Google Patents

Description

  The present invention relates to an image processing method, an image processing apparatus, an information processing apparatus, and a computer program that prevent a confidential part in a document from being inadvertently copied, printed, or faxed.

There are image processing devices that restrict copying, printing, or fax transmission of highly confidential documents. For example, an image processing apparatus and an image processing system that prevent copying by an unspecified number of users by embedding a public key in a confidential document and preventing copying without a corresponding private key have been proposed (for example, Patent Document 1). In addition, an image processing apparatus has been proposed that creates a copy from which a seal or vermilion writing is removed by copying, for example, by removing a vermilion portion in a document (see, for example, Patent Document 2 or 3).
JP-A-11-215351 JP-A-9-214782 Japanese Patent Laid-Open No. 3-198476

  The image processing apparatus of Patent Document 1 has a problem that convenience is lowered because copying of the entire document is prohibited. For example, even in a highly confidential document, not all are important, but only a part is often important. For some important parts (confidential parts), printing of other parts is restricted, and convenience is reduced.

  In addition, in the image processing apparatus of Patent Document 2 or 3, a color that prohibits copying is determined, so that colors that can be used in general documents are limited, and confidential portions need to be described in a predetermined color. There is a problem that the convenience of document creation decreases.

  The present invention has been made in view of the above problems, and can improve the convenience of creating and handling confidential documents that are subject to output suspension when copying, printing, or sending a fax while maintaining high security. An object is to provide a possible image processing method, image processing apparatus, information processing apparatus, and computer program.

  Another object of the present invention is to provide an image processing apparatus that can clearly indicate to a user that a confidential portion (specific color portion) has not been intentionally output.

The image processing method according to the present invention accepts color image data, stores it in a storage unit, and receives the color image in the image processing method using an image processing apparatus that performs output processing of the color image data stored in the storage unit. and authenticating the requesting output processing of the data, if the authentication is not completed, and a step of extracting a specific color portion of the color image data received, the output of the extracted specific color portion to discontinue And a designation of a specific color of the specific color portion for which output is to be stopped is received.

The image processing method according to the present invention accepts color image data, stores it in a storage unit, and receives the color image in the image processing method using an image processing apparatus that performs output processing of the color image data stored in the storage unit. comprising the steps of authenticating the requester of the output processing of the data, and extracting a particular color portion of the color image data received, if the authentication is not completed, the output of the extracted specific color portion to discontinue And a designation of a specific color of the specific color portion for which output is to be stopped is received.

An image processing apparatus according to the present invention accepts color image data, stores the color image data in a storage unit, and outputs the color image data stored in the storage unit. Authentication means for authenticating the original, extraction means for extracting the specific color portion of the received color image data, and output of the specific color portion extracted by the extraction means if authentication by the authentication means is not completed Output canceling means and specific color receiving means for receiving designation of a specific color of the specific color portion for which output is to be stopped are provided.

An image processing apparatus according to the present invention accepts color image data, stores the color image data in a storage unit, and outputs the received color image data in the image processing apparatus that performs output processing of the color image data stored in the storage unit. Authentication means for authenticating the original, extraction means for extracting the specific color portion of the received color image data, and output stop for stopping the output of the specific color portion extracted by the extraction means when authentication by the authentication means is not completed And a specific color receiving means for receiving designation of a specific color of the specific color portion for which output is to be stopped .

  In the image processing apparatus according to the present invention, the storage unit stores a semiconductor storage device that stores a specific color portion of received image data, and a non-specific color portion excluding the specific color portion of received image data. And a magnetic storage device.

  The image processing apparatus according to the present invention includes an erasing unit for erasing a specific color portion for which the output process is completed, which is stored in the storage unit, when the output process is completed.

  The image processing apparatus according to the present invention includes an encryption unit that encrypts a specific color portion stored in the storage unit.

  The image processing apparatus according to the present invention is characterized in that the specific color is a plurality of colors.

  The image processing apparatus according to the present invention is characterized in that importance is set for the specific color.

  The image processing apparatus according to the present invention is characterized in that the specific color portion is a character portion of a specific color.

  The image processing apparatus according to the present invention is characterized in that the specific color portion is a graphic portion including a specific color.

  The image processing apparatus according to the present invention is characterized in that the output canceling unit is configured to replace a specific color portion with a predetermined mark.

  The image processing apparatus according to the present invention includes a notification unit that notifies the output stop of the specific color portion when the output of the specific color portion is stopped.

  The image processing apparatus according to the present invention is characterized in that the output processing includes transmission of image data, and comprises an encryption means for encrypting a specific color portion of the image data to be transmitted.

The image processing apparatus according to the present invention includes a transmission unit that transmits specific color information relating to a specific color to a receiving destination of the color image data .

The information processing apparatus according to the present invention is an information processing apparatus that transmits the color image data to the image processing apparatus, the reception unit receiving specific color information regarding a specific color, and the color image transmitted to the image processing apparatus. Conversion means for converting a predetermined color in the data into the specific color.

A computer program according to the present invention causes a computer, a computer program for transmitting the color image data to the image processing apparatus, the computer, the procedure for only accept specific color information about a particular color, the computer, the image And a procedure for converting a predetermined color in the color image data to be transmitted to a processing device into the specific color.

A computer program according to the present invention includes a procedure for causing a computer to encrypt a specific color portion of the color image data to be transmitted to the image processing apparatus.

A computer program according to the present invention causes a computer, a computer program for transmitting the color image data to the image processing apparatus, the computer, the procedure for only accept specific color information about a particular color, the computer, the image And a procedure for converting the specific color portion in the color image data transmitted to the processing device into an erasure color.

A computer program according to the present invention causes a computer, a computer program for transmitting the color image data to the image processing apparatus, the computer, the procedure for only accept specific color information about a particular color, the computer, the image And a procedure for converting the specific color in the color image data transmitted to the processing device into a non-specific color.

A computer program according to the present invention is a computer program for causing a computer to transmit the color image data to the image processing apparatus, and for causing the computer to accept an output instruction or an output stop instruction for a specific color portion; And a procedure for transmitting the received output instruction or output stop instruction to the image processing apparatus.

  In the present invention, the request source of the output processing of the received color image data is authenticated by the authentication means. When authentication by the authentication unit is not completed, the specific color portion of the received color image data is extracted by the extraction unit, and the output of the extracted specific color portion is stopped by the output stop unit. When creating a document, for example, the normal part is often described in black and the important part is often described in a specific color other than black. When the output request source can be authenticated when outputting the image data including the specific color, an image including both the specific color part (important part) and the non-specific color part (normal part) is output. . On the other hand, when the output request source cannot be authenticated, only the non-specific color part (normal part) excluding the specific color part (important part) is output. As the image data, a color image of an original can be read by a color scanner, or color image data or document data can be received from a computer. The received image data can be printed on a recording sheet or transmitted by facsimile. Since it is possible to switch the output / output stop of the important part (specific color part) according to the authentication result, the convenience of the user is improved, and an unspecified number of documents including the important part are copied, printed or facsimile It is possible to prevent transmission.

  In the present invention, the request source of the output processing of the received color image data is authenticated by the authentication means. The specific color portion of the received color image data is extracted by the extracting means. When the authentication by the authentication unit is not completed, the output canceling unit stops outputting the specific color portion extracted by the extracting unit. When the output request source can be authenticated when outputting the image data including the specific color, an image including both the specific color part (important part) and the non-specific color part (normal part) is output. . On the other hand, when the output request source cannot be authenticated, only the non-specific color part (normal part) excluding the specific color part (important part) is output. Since it is possible to switch the output / output stop of the important part (specific color part) according to the authentication result, the convenience of the user is improved, and an unspecified number of documents including the important part are copied, printed or facsimile It is possible to prevent transmission. Further, by executing the authentication and the extraction of the specific color portion in parallel, the image data output process can be performed efficiently.

  In the present invention, the instruction receiving unit receives an output instruction or an output stop instruction for the specific color portion. When the output stop instruction is received, the specific color portion of the received color image data is extracted by the extraction unit, and the output of the extracted specific color portion is stopped by the output stop unit. When an output instruction is accepted when performing output processing of image data including a specific color, an image including both a specific color portion (important portion) and a non-specific color portion (normal portion) is output. On the other hand, when an output stop instruction is accepted, only the non-specific color part (normal part) excluding the specific color part (important part) is output. Since it is possible to instruct and switch the output / output stop of the important part (specific color part), the convenience for the user is improved.

  In the present invention, the instruction receiving unit receives an output instruction or an output stop instruction for the specific color portion. The specific color portion of the received color image data is extracted by the extracting means. When the output stop instruction is accepted, the output of the specific color portion extracted by the extraction unit is stopped by the output stop unit. When an output instruction is accepted when performing output processing of image data including a specific color, an image including both a specific color portion (important portion) and a non-specific color portion (normal portion) is output. . On the other hand, when an output stop instruction is accepted, only the non-specific color part (normal part) excluding the specific color part (important part) is output. Since it is possible to instruct and switch the output / output stop of the important part (specific color part), the convenience for the user is improved. In addition, the image data output process can be efficiently performed by executing the reception of the output or the output stop and the extraction of the specific color portion in parallel.

  In the present invention, the specific color portion of the received image data is stored in the semiconductor storage device, and the non-specific color portion excluding the specific color portion of the received image data is stored in the magnetic storage device. By using a magnetic storage device such as a hard disk device, image data can be stored for a long period of time. In addition, since the specific color portion (important portion) is not stored in a magnetic storage device such as a hard disk but is stored in a semiconductor storage device such as a RAM, the important portion (specific color portion) is stored only temporarily. , Improve security.

  In the present invention, when the output process is completed, the specific color part for which the output process has been completed stored in the storage unit is erased by the erasing means. By immediately erasing the specific color portion for which output processing has been completed, the possibility that the important portion is illegally read from the storage unit can be reduced.

  In the present invention, the specific color portion stored in the storage unit is encrypted by the encryption unit. By encrypting the specific color part and storing it in the storage unit, even if the specific color part is read from the storage unit, the content of the specific color part is prevented from leaking and security is improved. Is possible. Further, since the specific color portion is encrypted, the specific color portion can be stored in a magnetic storage device such as a hard disk. In this case, complete document data including the specific color portion can be stored on the hard disk for a long period of time.

  In the present invention, a specific color designation is received by the specific color receiving means, and control of output / output stop of the received specific color is performed. The color used for the important part varies depending on the user. Depending on the usage environment, the important color (specific color) may be determined in advance, or the color that cannot be used as the important color (specific color) may be determined in advance. is there. By accepting the designation of the specific color and making it changeable, the user can flexibly change the specific color, improving convenience.

  In the present invention, the specific color is a plurality of colors. The color used for the important part varies depending on the user. For example, in order to clarify the difference in importance, a plurality of colors may be used. By making it possible to set a plurality of specific colors, the versatility (redundancy) of the colors used for the specific colors is increased and the convenience can be improved. Also, for example, it is possible to set the importance level for each specific color, and to specify the specific color for which output is to be stopped at the time of output processing of fax transmission, copying, and printing by the importance level.

  In the present invention, the specific color portion is a character portion of a specific color. By not outputting the character part of the specific color, it is possible to prevent the contents of the important part in the document from leaking, and the security is improved.

  In the present invention, the specific color portion is a graphic portion including the specific color. When the specific color portion is a part of a figure, the deleted specific color portion may be easily estimated depending on the content of the figure even if the specific color portion is deleted (for example, converted into white). Even when a specific color is included in a part of the figure, by stopping the output of the whole figure, it is possible to prevent an important figure from being outputted, and security is improved.

  In the present invention, the output canceling means stops the output of the specific color portion by replacing the specific color portion with a predetermined mark. For example, the specific color portion can be replaced with an underline or a filled mark. If the output of the specific color portion is stopped and only the non-specific color portion is output, there is a possibility that the user misunderstands that it is a document creation error or a machine failure. By indicating the specific color portion with a predetermined mark such as an underline, it is possible to clearly indicate to the user that printing has not been intentionally performed.

  In the present invention, when the output of the specific color portion is stopped, the notification stop of the output of the specific color portion is notified. For example, a message can be notified to an operation panel or the like. If the output of the specific color portion is stopped and only the non-specific color portion is output, there is a possibility that the user misunderstands that it is a document creation error or a machine failure. By notifying that the specific color portion has not been output, it is possible to make the user recognize that printing has not been intentionally performed.

  In the present invention, the transmission destination permitting transmission of the specific color portion is stored in the transmission destination storage unit. When the transmission destination of the received color image data is not stored in the transmission destination storage unit, the specific color portion of the received color image data is extracted by the extraction unit, and the transmission of the extracted specific color portion is stopped by the output cancellation unit. . When sending to a destination other than the preset destination, the specific color part is not output. For example, even if the fax number is entered incorrectly, it is possible to prevent the important part from being sent to an unknown destination. is there.

  In the present invention, the transmission destination permitting transmission of the specific color portion is stored in the transmission destination storage unit. The specific color portion of the received color image data is extracted by the extracting means. When the transmission destination of the received color image data is not stored in the transmission destination storage unit, the transmission of the specific color portion extracted by the extraction unit is stopped by the output cancellation unit. When sending to a destination other than the preset destination, the specific color part is not output. For example, even if the fax number is entered incorrectly, it is possible to prevent the important part from being sent to an unknown destination. is there. Further, by performing in parallel the determination of whether or not the transmission destination is stored in the transmission destination storage unit and the extraction of the specific color portion, the image data output process can be performed efficiently.

  In the present invention, the output process includes transmission of image data, and the specific color portion to be transmitted is encrypted by the encryption means. The encryption method, the key, and the like are determined in advance, and the encrypted image data is decrypted at the transmission destination. When image data is transmitted by facsimile or the like, the specific color portion (important portion) is encrypted to prevent leakage of the important portion even when the transmission data is illegally read during transmission. Is possible.

  In the present invention, the image processing apparatus transmits the specific color information related to the specific color from the transmission unit. An information processing apparatus such as a computer that transmits image data to the image processing apparatus accepts specific color information relating to a specific color by the receiving unit, and the conversion unit selects a predetermined color in the image data to be transmitted to the image processing apparatus. Convert to color. By transmitting the specific color information regarding the specific color from the image processing apparatus to the computer, the computer can convert the predetermined color into the specific color and transmit it to the image processing apparatus. The color used for the important part varies depending on the user. On the computer side, the important color (predetermined color) used by the user can be converted to the specific color specified by the image processing device. Thus, the user can flexibly set the color (important color) used for the important part, and the convenience is improved.

  In the present invention, the computer that transmits the image data to the image processing apparatus encrypts the image data to be transmitted to the image processing apparatus. The encryption method, the key, and the like are determined in advance, and the encrypted image data is decrypted by the image processing apparatus. By encrypting a specific color portion (important portion) in the confidential document and transmitting it to the image processing apparatus, it is possible to prevent leakage of the important portion.

  In the present invention, the computer that transmits the image data to the image processing apparatus receives the specific color information relating to the specific color from the image processing apparatus, and converts the specific color portion in the image data to be transmitted to the image processing apparatus into an erasure color. . For example, when printing on white paper, the specific color is converted to white (erased color). It is also possible to convert a specific color into a predetermined mark such as an underline or a filled mark. By transmitting the specific color information related to the specific color from the image processing apparatus to the computer, the specific color can be converted into an erasure color (or a predetermined mark) on the computer side and transmitted to the image processing apparatus. By converting the specific color to the erasure color (or the predetermined mark) on the computer side, the image processing apparatus side does not need to perform the output stop process for the specific color, and the load of the output process can be reduced.

  In the present invention, the computer that transmits the image data to the image processing apparatus acquires specific color information about the specific color from the image processing apparatus, and converts the specific color in the image data to be transmitted to the image processing apparatus into a non-specific color. To do. Even when the image processing apparatus prohibits the output of a specific color, the specific color portion can be printed by converting the specific color into a non-specific color on the computer side. In this case, the confidential document is often printed by a user who creates the confidential document with a computer (the creator of the confidential document), and the possibility that the confidential document is leaked is low. It is possible to improve convenience at the time of printing for a user who creates a confidential document.

  In the present invention, the computer that transmits the image data to the image processing apparatus receives the output instruction or the output stop instruction for the specific color portion, and transmits the received output instruction or the output stop instruction to the image processing apparatus. For example, it is possible to receive an output instruction for a specific color portion or an output stop instruction with a keyboard and instruct the image processing apparatus to output / output a specific color. Since it is possible to instruct to output a specific color portion at the time of printing, it is possible to improve the convenience at the time of printing for a user who creates a confidential document.

  According to the present invention, since it is possible to switch the output / output stop of the specific color part (important part) according to the authentication result of the output request source, an unspecified number of documents including the important part are copied. It is possible to prevent printing or facsimile transmission and improve user convenience. In addition, since it is possible to switch transmission / transmission of a specific color part (important part) according to the destination, even if a fax number is entered incorrectly, for example, an important part to an unknown destination Transmission can be prevented and user convenience is improved.

  According to the present invention, since it is possible to instruct and switch output / output stop of a specific color portion (important portion), convenience for the user is improved.

  According to the present invention, output processing of image data can be efficiently performed by executing in parallel the determination of output such as authentication or output stop and the extraction of a specific color portion.

  According to the present invention, it is possible to clearly notify the user that printing has not been intentionally performed, for example, a specific color portion for which output has been stopped is indicated by a predetermined mark such as an underline.

  According to the present invention, by transmitting specific color information from the image processing apparatus to the computer, it is possible to process print data (image data) transmitted from the computer to the image processing apparatus on the computer side. For example, it becomes possible to convert an important color used uniquely by the user into a specific color instructed from the image processing apparatus, and the user can flexibly set the specific color, thereby improving convenience.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
(First embodiment)
FIG. 1 is a block diagram showing a configuration of an image processing apparatus 10 according to the present invention, and FIG. 2 is a block diagram showing a communication network to which the image processing apparatus 10 is connected. The image processing apparatus 10 includes an image reading unit 100, a communication unit 150, a color restriction unit 110 connected to the image reading unit 100 and the communication unit 150, an image memory 180 connected to the color restriction unit 110, and an image memory. 180 and the image processing unit 130 connected to the communication unit 150, the image forming unit 140 connected to the image processing unit 130, the control unit 120 connected to each unit and controlling each unit, and connected to the control unit 120. The storage unit 170 and the operation unit 160 are provided.

  The operation unit 160 includes, for example, an operation panel 161 and a liquid crystal panel 162. The control unit 120 can receive an operation instruction from the operation panel 161 and display a processing status on the liquid crystal panel 162. The image processing apparatus 10 (communication unit 150) is connected to a network 26 to which a computer 22 is connected as shown in FIG. The network 26 is connected to an external network 24 such as the Internet or a telephone line. The control unit 120 performs output processing such as printing (copying, printing) or fax transmission according to an operation instruction received from the operation unit 160 (operation panel 161) or the communication unit 150 (computer 22). The output process includes image data transmission or e-mail transmission to the computer 22 in addition to printing or facsimile transmission.

  The image reading unit 100 reads a color original and outputs image data converted into a plurality of color components (for example, a color scanner). The image forming unit 140 uses the exposure unit to apply the received image data to an image carrier. An electrostatic latent image is formed, the electrostatic latent image is visualized with a developer, and the visualized image is transferred to a recording medium (recording paper).

  The image reading unit 100 includes, for example, a CCD (Charge Coupled Device), reads image data of a document, and sends the read image data to the color restriction unit 110. The communication unit 150 performs communication control with the network 26, receives image data from the computer 22, for example, and sends the received image data to the color restriction unit 110.

  The storage unit 170 stores specific color information regarding a specific color and user information regarding a user who is permitted to output the specific color portion of the image data. The control unit 120 can store the image reading unit 100 or the communication unit 150. Operates as a means (authentication means) for authenticating the output request source of the received image data. When the authentication is not completed, an instruction to stop outputting the specific color portion is given to the color restriction section.

  The color restriction unit 110 extracts a specific color portion of image data received from the image reading unit 100 or the communication unit 150 when an output stop instruction (including specific color information) is given from the control unit 120. It operates as means (extraction means), means for stopping the output of the extracted specific color portion (output stop means). For example, when printing on white paper, the color restriction unit 110 can convert a specific color into an erasure color (white), or can paint a specific color portion with white or the like. The image data from which the specific color portion has been erased (converted to white) is sent from the color restriction unit 110 to the image memory (storage unit) 180. If there is no output stop instruction from the control unit 120, the color restriction unit 110 sends the received image data to the image memory 180 as it is.

  The image processing unit 130 performs image processing such as enlargement or reduction of the image data read from the image memory 180 in response to an instruction from the operation unit 160, for example. In addition, the image processing unit 130 sends image data to the image forming unit 140 or the communication unit 150 in accordance with an instruction from the control unit 120. The image forming unit 140 includes, for example, an LSU (Laser Scanning Unit), and forms (prints) an image on a recording sheet by forming an electrostatic latent image of image data received from the image processing unit 130 on a photoconductor. The communication unit 150 transmits the image data received from the image processing unit 130 to a transmission destination (the computer 22 or an external fax machine) instructed by the control unit 120.

  FIG. 3 shows a detailed configuration of a part mainly related to image reading and image formation (printing) of the image processing apparatus 10. The image processing apparatus 10 includes a document table 670 having transparent glass or the like on the upper surface. An optical system for reading a document is disposed below the document table 670. The optical system includes an exposure light source 671 that irradiates light on a document placed on a document table 670, an imaging lens, and a plurality of reflecting mirrors 672 that guide light to a photoelectric conversion element (CCD) 673.

  In addition, an automatic document feeder 680 that automatically conveys a document and performs a document reading operation is installed above the document table 670. The automatic document feeder 680 feeds the documents one by one to the paper feed path 682 when the documents are set on the paper feed tray 681. The fed document is temporarily stopped with its leading edge pressed against the PS roller 683. By turning on a clutch (not shown), it is possible to connect the PS roller 683 to a drive unit of a conveyance motor (not shown) to resume the temporarily stopped original and send the original to the original reading window 688.

  By moving the exposure light source 671 directly below the document reading window 688 and irradiating the document with light in accordance with the start timing of document conveyance, the reflected light from the document is transmitted to the CCD 673 via each part of the optical system. Led. The document image data read by the CCD 673 is subjected to image processing by the image processing unit 130 shown in FIG. 1 and the like, and laser light is applied to the surface of the image carrier (photosensitive member) 611 by a laser scanning unit (LSU) 621. Irradiate to form an electrostatic latent image.

  The photoconductor 611 is formed in a drum shape and is driven to rotate. Around the photoconductor 611, a developing device 620 for developing the electrostatic latent image on the surface of the photoconductor 611 into a visible image with toner is disposed. Around the photosensitive member 611, there are a transfer charger 613 for transferring a toner image on the surface of the photosensitive member 611 to a sheet, a cleaning device for removing residual toner on the surface of the photosensitive member 611, and a charger for charging the surface of the photosensitive member 611 to a predetermined potential. 612 and an LSU 621 for irradiating a laser toward the laser irradiation point of the photoconductor 611 are arranged.

  The image processing apparatus 10 in this description is assumed to be compatible with color image reading and output (printing). FIG. 4 is a diagram illustrating a schematic configuration of the image forming unit 140. The image data stored in the image memory 180 is sent to the image processing unit 130, where the image processing unit 130 converts the image data into an output image for each page, and then performs color separation for each page. For example, color separation is performed into Y (yellow), M (magenta), C (cyan), and BK (black). The color-separated image data is sent to the image forming unit 140, where the image forming unit 140 forms an electrostatic latent image of each color on each color photoconductor, transfers each color image onto a recording sheet, and the color image. Form.

  The recording paper is stored in a paper cassette 630 shown in FIG. A half-moon roller 631 for feeding the recording paper to the paper feed conveyance path 633 is disposed at the leading end of the paper cassette 630, and detects the passage of the paper along the conveyance path from the recording paper feed side to the paper discharge side. A pre-registration detection switch (not shown), a PS roller 632 for aligning the toner image on the photosensitive member 611 and the paper based on a signal from the pre-registration detection switch, and a heating roller and pressurizing the toner image on the paper A fixing roller section 650 for fixing the sheet to the sheet by a roller; a fixing sheet detection switch (not shown) for detecting that the sheet has passed through the fixing roller section 650; and an illustration for detecting that the sheet has passed on the sheet discharge conveyance path 635 A paper discharge detection switch that is not used and a paper discharge roller 636 for discharging the recording paper are disposed. The recording paper passes through the above-described members from the paper cassette 630 and is discharged to the paper discharge tray 660, thereby completing a series of output processing (printing).

  For example, when the image reading unit 100 reads a color document in which a confidential portion is described in a specific color, the image processing apparatus 10 controls the control unit 120 to accept authentication information such as a password from the operation unit 160. The control unit 120 compares the received authentication information with the user information stored in the storage unit 170 to perform authentication. When the authentication is not completed, the control unit 120 sends a specific color output stop instruction to the color restriction unit 110, and the color restriction unit 110 receives the specific color portion of the image data received from the image reading unit 100 or the communication unit 150. Is deleted (the specific color portion is extracted, and the extracted specific color portion is converted into, for example, white), and the image data from which the specific color portion is deleted is sent to the image memory 180. When the authentication is completed, the control unit 120 does not send a specific color output stop instruction to the color restriction unit 110, and the color restriction unit 110 receives the image data received from the image reading unit 100 or the communication unit 150 as it is in the image memory. Send to 180. The image data sent to the image memory is sent to the image forming unit 140 via the image processing unit 130 and printed on a recording sheet. Alternatively, it is sent to the communication unit 150 via the image processing unit 130 and transmitted by facsimile.

  FIG. 5A is a diagram showing an example of a document, and FIGS. 5B and 5C are diagrams showing examples of printed recording paper. A document 700 shown in FIG. 5A includes a specific color portion 702 written in red, for example, and a non-specific color portion 701 written in black. If the authentication is not completed by the control of the control unit 120, the color restriction unit 110 deletes the specific color portion (converts to white) as described above, and the recording is performed as shown in FIG. The non-specific color portion 701 is recorded (output) on the sheet 710, but the specific color portion 702 is not recorded (output is stopped). When the authentication is completed under the control of the control unit 120, the color restriction unit 110 transfers the image data as it is as described above, and the specific color portion is recorded on the recording paper 720 as shown in FIG. Both 702 and the non-specific color portion 701 are recorded.

  The printing on the recording sheet has been described above as an example. For example, the image data sent to the image memory can be sent to the communication unit 150 via the image processing unit 130 and transmitted by fax. In addition, the image data received by the communication unit 150 from the computer 22 can be printed by the image forming unit 140 or can be faxed from the communication unit 150.

  For the authentication, in addition to accepting a password by the operation unit 160 or the communication unit 150, for example, authentication information of a wireless tag or an IC card is acquired by an acquisition unit provided in the image processing apparatus 10 and sent to the control unit 120. Is possible. Also, any authentication method can be used, such as accepting the IP address of the computer 22 by the communication unit 150 and using it for authentication.

  Further, the output (printing) of the image data including the specific color portion is performed when, for example, the image forming unit 140 only supports monochrome printing in addition to outputting the color image read by the image reading unit 100 as it is. Alternatively, in the case of fax transmission, a color image read by the image reading unit 100 can be printed or transmitted in black and white.

  In the embodiment described above, the output / output stop of the specific color portion is performed according to the completion / non-completion of the user authentication, but the user can also instruct the output / output stop of the specific color portion. For example, the operation unit 160 or the communication unit 150 is operated as a unit (instruction receiving unit) that receives an output instruction or output stop instruction for a specific color portion, and the color restriction unit 110 is output from the control unit 120 or an output stop instruction. Accordingly, it is possible to operate as means for extracting the specific color portion (extraction means) and means for stopping the output of the extracted specific color portion (for example, converting the specific color portion to white) (output stop means). .

  For example, by default, the control unit 120 or the storage unit 170 is set so that the output of the specific color portion is stopped, and the user instructs the output of the specific color from the operation unit 160 or the communication unit 150 (computer 22) as necessary. It is possible to give In this case, the control unit 120 normally gives an output stop instruction for the specific color portion to the color restriction unit 110, but does not issue an output stop instruction for the specific color portion when the output instruction for the specific color is accepted. Similarly, the specific color portion is output by default, and when the user gives an instruction to stop outputting the specific color portion, the specific color portion is deleted (for example, converted into white) by the color restriction unit 110, and the like is given by the user. In response to the output instruction or the output stop instruction, the specific color portion can be output or output can be stopped. Further, the erasing of the specific color portion (extraction of the specific color portion and conversion of the extracted specific color portion into, for example, white) can be performed by the control unit 120 or the image processing unit 130.

  The control unit 120 can update the specific color information stored in the storage unit 170 in accordance with a specific color change instruction received by the operation unit 160 or the communication unit 150 (specific color receiving unit). For example, since red is generally likely to be frequently used such as an emphasized portion (not a confidential portion), blue or the like can be set as a specific color. However, the specific color information is preferably updated when the authentication based on the user information is completed.

  Further, when the image processing apparatus 10 receives image data including a specific color portion from the computer 22 and prints it, a user who creates a confidential document including the specific color portion on the computer 22 prints it for content confirmation. There is a high possibility that In consideration of user convenience, the user information or the operation of the control unit 120 can be set so that the image data received by the communication unit 150 from the computer 22 is printed as it is.

  It is possible to improve security by restricting the copying or printing of confidential parts written in a specific color. Further, it is possible to copy or print the specific color portion by authentication or instruction, and it is possible to improve user convenience while maintaining high security. Moreover, since confidentiality is realized by describing the confidential part in a specific color, it is possible to easily and efficiently create a document including the confidential part.

(Second Embodiment)
FIG. 6 is a block diagram showing a configuration of another image processing apparatus 20 according to the present invention. The image processing apparatus 20 includes an image reading unit 100, a control unit 220, an image processing unit 230, an image forming unit 140, a communication unit 150, an operation unit 160, and a storage unit similar to those in the first embodiment. 170 and a first image memory 280.

  In the present embodiment, the image processing apparatus 20 includes a color separation unit 210 connected to the image reading unit 100 and the communication unit 150, an encryption unit (encryption unit) 284 connected to the color separation unit 210, and an encryption unit. A second image memory 282 connected to the conversion unit 284, and a decoding unit 286 connected between the second image memory 282 and the image processing unit 230. A first image memory 280 is connected between the color separation unit 210 and the image processing unit 230. Each unit is controlled by the control unit 220. The encryption unit 284 can be configured integrally with the color separation unit 210, and the decryption unit 286 can be configured integrally with the image processing unit 230.

  The color separation unit (extraction unit) 210 extracts a specific color portion of the image data received from the image reading unit 100 or the communication unit 150 and separates the specific color portion into a non-specific color portion. The data is sent to the encryption unit 284, and the non-specific color part is sent to the first image memory 280. The encryption unit 284 encrypts the specific color portion received from the color separation unit 210 and sends the encrypted specific color portion to the second image memory 282.

  The decrypting unit 286 decrypts the encrypted specific color portion stored in the second image memory 282 and sends the decrypted specific color portion to the image processing unit 230. The image processing unit (output canceling unit) 230 receives the non-specific color portion stored in the first image memory 280 and the specific color portion decoded by the decoding unit 286, and stops output of the specific color from the control unit 220. When an instruction is given, only the non-specific color part is sent to the image forming unit 140 or the communication unit 150. Further, the image processing unit 230, when no instruction to stop outputting the specific color is given from the control unit 220, the original image data before the color separation unit 210 separates the specific color portion and the non-specific color portion. And sent to the image forming unit 140 or the communication unit 150.

  In the second embodiment described above, the first image memory 280 and the second image memory 282 are separated, but the first image memory 280 and the second image memory 282 are the same image memory, and the storage area is the first image memory. It is also possible to divide into a storage area and a second storage area, store the non-specific color part in the first storage area, and store the encrypted specific color part in the second storage area. Encryption and decryption can also be performed by the control unit 220.

  Since the specific color portion is encrypted and stored in the image memory (second image memory 282), even if the content of the image memory is read out, it is encrypted, so the confidential portion (specific color portion) ) Leakage can be prevented.

  In addition, when the color separation unit (extraction unit, output stop unit) 210 receives an output stop instruction from the control unit 220, the transfer of the specific color portion to the encryption unit 284 can be stopped. In this case, when output is stopped, the confidential portion (specific color portion) is not stored in the second image memory 282, and leakage of the confidential portion can be prevented more firmly.

(Third embodiment)
FIG. 7 is a block diagram showing a configuration of another image processing apparatus 30 according to the present invention. The image processing apparatus 30 includes an image reading unit 100, a color separation unit 210, a control unit 220, an image processing unit 230, an image forming unit 140, a communication unit 150, and an operation similar to those in the second embodiment. Unit 160 and storage unit 170.

  In the present embodiment, the image processing apparatus 30 includes a RAM (semiconductor storage device) 382 and a hard disk (magnetic storage device) 380 connected between the color separation unit 210 and the image processing unit 230. The color separation unit (extraction unit) 210 extracts a specific color portion of the image data received from the image reading unit 100 or the communication unit 150 and separates the specific color portion into a non-specific color portion. The data is sent to the RAM 382, and the non-specific color portion is sent to the hard disk 380. The image processing unit (output stopping unit) 230 receives the specific color portion stored in the RAM 382 and the non-specific color portion stored in the hard disk 380, and is given an output stop instruction for the specific color from the control unit 220. If it is, only the non-specific color part is sent to the image forming unit 140 or the communication unit 150. Further, the image processing unit 230 converts the specific color portion and the non-specific color portion into the original image data before being separated by the color separation unit 210 when the output stop instruction for the specific color is not given from the control unit 220. The images are combined and sent to the image forming unit 140 or the communication unit 150.

  By providing the hard disk 380, image data can be stored for a long period of time, and the convenience for the user is improved. Moreover, since the non-specific color portion excluding the confidential portion (specific color portion) is stored in the hard disk 380, there is little risk of leakage of the confidential portion.

  It is preferable that the controller (erase unit) 220 immediately erases the specific color portion that has been read from the RAM 382 and for which the output process has been completed. The controller 220 immediately deletes the specific color portion (secret portion) that is no longer necessary after the output processing is completed, thereby preventing leakage of the secret portion and improving security.

  In the above-described third embodiment, the specific color portion is stored in the RAM 382. For example, the specific color portion is specified by the encryption unit or the control unit (encryption unit) in the same manner as in the above-described second embodiment. It is also possible to encrypt the color part and store it in the RAM 382 or the hard disk 380. When stored in the hard disk 380, the image data including the specific color portion can be stored for a long period of time, and the convenience for the user is improved.

  In addition, when the color separation unit (extraction unit, output stop unit) 210 receives an output stop instruction from the control unit 220, the transfer of the specific color portion to the RAM 382 can be stopped. In this case, when output is stopped, the confidential portion (specific color portion) is not stored in the RAM 382, and leakage of the confidential portion can be prevented more firmly.

  In the second or third embodiment described above, the specific color portion is stored in the second image memory 282 or the RAM 382. However, it is also possible to store both the specific color portion and the specific color portion. . FIG. 8 is a block diagram illustrating a configuration of the image processing device 30a that stores image data (both the specific color portion and the specific color portion) in the RAM 382. The configuration of the image processing device 30a is the same as that of the third embodiment (the image processing device 30 in FIG. 7), but the color separation unit 210a extracts the characteristic portion and separates the non-specific color portion to hard disk. The image data (both the specific color portion and the specific color portion) is sent to the RAM 382. The image processing unit 230a converts the image data including both the specific color portion and the specific color portion read from the RAM 382 or the image data not including the specific color portion read from the hard disk 380 into the image forming unit 140 or the communication unit 150. Send to.

  As described above, the separation of the image data is performed by extracting the specific color portion and separating it into the specific color portion and the non-specific color portion, and when the authentication is completed, the specific color portion and the non-specific color portion are combined and output, If authentication is not completed, output only non-specific color parts, or extract specific color parts and separate them into non-specific color parts and image data (including both specific color parts and non-specific color parts) When the authentication is completed, the image data can be output. When the authentication is not completed, only the non-specific color portion can be output.

(Fourth embodiment)
In each of the embodiments described above, the specific color portion is deleted and only the non-specific color portion is printed (output) to prevent leakage of the confidential portion. However, the specific color portion can be replaced with a predetermined mark. It is. For example, in the second or third embodiment, the color separation unit 210 replaces the specific color portion with an underline, or the image processing unit 230 replaces the specific color portion with an underline, and the specific color portion is underlined. It is possible to output a lined image.

  FIG. 9A is a diagram illustrating an example of a printed recording sheet. However, the example of FIG. 9A is an example corresponding to FIG. 5B, and a non-specific color portion 701 and an underline portion (specific color portion) 703 are printed on the recording paper 730. As shown in FIG. 5B, it is possible to prevent leakage of the confidential portion (specific color portion) by not printing (outputting) the specific color portion 702, but only the non-specific color portion 701 is printed. Therefore, the user may misrecognize that it is a document creation error or a machine failure. However, as shown in FIG. 9A, it is possible to clearly indicate that the confidential portion is not intentionally printed by expressing the specific color portion by the underline 703.

  The method of clearly indicating that the specific color portion is not intentionally printed (output) is not limited to the above method, and an arbitrary pattern or mark can be displayed. For example, as shown in FIG. 9B, it is possible to clearly indicate that printing was not intentionally performed by replacing the specific color portion with a solid mark 704.

  In addition, when the control unit 120 or 220 cannot authenticate the user and the specific color portion of the image data is not printed (output), the specific color portion is printed by the control of the control unit 120 or 220 at the timing when printing is finished. Information can be displayed on the liquid crystal panel 162 of the operation unit (notification unit) 160 or can be notified from the communication unit (notification unit) 150 to the user's computer 22. It is also possible to notify by voice from a speaker (notification means) (not shown) that the specific color portion has not been printed, or to print a message on the header portion of the printed recording paper (notification means). By notifying that the specific color portion is not printed, it is possible to clearly indicate to the user that the confidential portion has not been intentionally printed (output) and to improve convenience.

(Fifth embodiment)
The specific color portion described above is preferably a character. For example, when a specific color is included in a color graphic, even if the specific color part is deleted (for example, converted to white), the deleted part (specific color part) can be easily estimated depending on the contents of the graphic. There is. When the specific color portion is a character, the content of the confidential portion (specific color portion) is hardly estimated from the print result, and security is improved.

  In addition, when the specific color portion is a part of the graphic, the color restriction unit 110 (or the color separation unit 220) preferably performs extraction (or separation) by regarding the entire graphic as the specific color portion. In the case of graphics, even if the specific color part is deleted, the erased part (specific color part) may be easily guessed depending on the contents of the figure, but by deleting the entire figure, the confidential part (specific color part) It is possible to prevent the printing of the contained graphic and improve the security.

  FIG. 10 is a flowchart illustrating an example of a procedure for separating a specific color when the specific color is included in the graphic. In this embodiment, the image processing apparatus 20 or 30 (FIG. 6 or FIG. 7) of the second or third embodiment will be described as an example. The color separation unit 210 or the control unit 220 identifies a character area and a graphic area in the image data received from the image reading unit 100 or the communication unit 150 using a known image recognition method (S10). After identifying the character area and the graphic area, the color separation unit 210 detects a specific color (S12). When the specific color is detected in the character area (S12: YES, S14: NO), the color separation unit 210 separates the specific color portion (S18). When the specific color is detected in the graphic area (S12: YES, S14: YES), the color separation unit 210 separates the entire graphic in which the specific color is detected (S16). When a plurality of specific color portions are detected, the processes of S14 to S18 are performed in the same manner.

(Sixth embodiment)
In the embodiment described above, the specific color portion is printed when the user authentication of the output request source is completed. For example, when a document including a confidential portion is faxed from the communication unit 150, depending on the transmission destination, It is also possible to switch transmission / discontinuation of a specific color portion. FIG. 11 is a block diagram illustrating an example of the image processing apparatus 40 that stops transmission of a specific color portion according to a transmission destination. The image processing apparatus 40 includes the same image reading unit 100, communication unit 150, color restriction unit 110, image memory 180, image processing unit 130, image forming unit 140, control unit 420, and storage unit 470 as in the first embodiment. And an operation unit 160.

  In the present embodiment, the storage unit (transmission destination storage unit) 470 stores transmission destination information such as a facsimile number of a transmission destination that permits transmission of the confidential portion. When the control unit 420 receives a fax transmission operation such as a fax number from the operation panel 161 of the operation unit 160, the control unit 420 checks whether the received fax number is registered in the transmission destination information stored in the storage unit 470. If not, an instruction to stop output of a specific color is given to the color restriction unit (extraction unit, transmission stop unit) 110.

  When the fax number of the transmission destination is registered in the transmission destination information of the storage unit 470, the specific color is not erased by the color restriction unit 110. For example, as shown in FIG. The received image data is faxed as it is. When the transmission destination fax number is not registered in the transmission destination information of the storage unit 470, the control unit 420 gives an output stop instruction to the color restriction unit 110. Therefore, the specific color is deleted by the color restriction unit 110 (for example, changed to white). For example, as shown in FIG. 5B, the image data from which the specific color portion has been deleted is transmitted by fax.

  Since the specific color portion is transmitted only to the destinations registered in advance, it is possible to prevent leakage of the confidential portion and enhance security. Further, it is possible to transmit a specific color portion to a specific transmission destination, and it is possible to improve user convenience while maintaining high security. Moreover, since confidentiality is realized by describing the confidential part in a specific color, it becomes possible to easily and efficiently create a facsimile transmission document including the confidential part.

  In the above-described embodiment, the transmission of the specific color portion is stopped according to the transmission destination. However, when the transmission is performed, the specific color is transmitted from the operation unit 160 (operation panel 161) or the communication unit 150 (computer 22). A part output / output stop instruction can be received, and an output stop instruction can be given from the control unit 420 to the color restriction unit 110 in accordance with the received instruction to stop transmission of a specific color part.

  Further, when transmitting the specific color part, the control unit 420 can also encrypt the specific color part or the entire image data. By encrypting the confidential portion (specific color portion) to be transmitted to the external communication line, it is possible to prevent leakage of the confidential portion during transmission and enhance security.

  In the encryption, when transmitting a specific color part, it is possible to encrypt the specific color part or the entire image data with a predetermined encryption method or a key and decrypt it with a fax machine on the receiving side. It is also possible to allow only a specific user on the receiving side to decrypt.

  Similarly to the second or third embodiment (FIG. 6 or FIG. 7), a color separation unit 210 is provided instead of the color restriction unit 110, and the first image memory 280 and the second image memory 180 are replaced with the image memory 180. An image memory 282 (or RAM 382 and hard disk 380) is provided, and the specific color portion and non-specific color portion separated by the color separation unit 210 are combined and output by the image processing unit 230, or only the non-specific color portion is output. It is also possible to do.

  In each embodiment described above, a plurality of specific colors can be set. In this case, since any one of a plurality of specific colors may be used, user convenience is improved. It is also possible to set a security level for a plurality of specific colors and control output / output stop according to the security level. FIG. 12 is a diagram illustrating an example of specific color information in which a confidential level (importance) is set. In the example of FIG. 12, specific colors of purple, orange, green, and blue are set from the higher secret level. The control unit 120, 220, or 420 described above performs output / output stop control for the specific color portion of the upper two colors (purple, orange) of the confidential level, for example, and the lower two colors (green, blue) of the confidential level. It is possible to always output the specific color portion. Since output / output stop is controlled according to the color to be used, the convenience of the user's document creation and output is improved.

  In fax transmission, it is also possible to set a confidential level (importance level) that permits transmission for each transmission destination. For example, in the transmission destination information of the storage unit 470, a confidential level that permits transmission to each transmission destination is set, and the control unit 420 transmits the specific color of the confidential level permitted to the transmission destination. It is possible to erase (cancel transmission) a specific color of an unauthorized security level. Similarly, it is also possible to set a security level that the control unit 120, 220, or 420 permits output for each copy, print, or fax transmission. For example, control is performed by the control unit 120, 220, or 420 so that orange, green, and blue are always output during printing, green and blue are always output during copying, and blue is always output during fax transmission. Is possible.

(Seventh embodiment)
FIG. 13 is a block diagram showing a configuration example of a computer (information processing apparatus) 22 according to the present invention connected to the image processing apparatus 10, 20, 30, 30a or 40 described above. The computer 22 includes a central processing unit (CPU) 31, a RAM 32, a hard disk 33, an input unit 34 such as a keyboard, a display unit 35 such as a monitor, a communication unit 36 connected to the network 26, and a CD-ROM. An external storage device 37 such as a (Compact Disk-Read Only Memory) drive is provided.

  The hard disk 33 stores specific color information relating to a specific color received by the communication unit (reception unit) 36 of the computer 22 from the communication unit (transmission unit) 150 of the image processing apparatus 10, 20, 30, 30 a or 40. . Note that the image processing apparatus 10, 20, 30, 30 a, or 40 transmits the specific color information stored in the storage unit 170 or 470 from the communication unit 150 to the computer 22 by the control unit 120, 220, or 420.

  The hard disk 33 also stores conversion color information related to user-specific important colors. When the CPU 31 receives an instruction to print document data stored in the hard disk 33 from the input unit 34, the CPU 31 selects an important color in the document data to be printed based on the converted color information and the specific color information stored in the hard disk 33. Is converted into a specific color (converting means), and the converted image data is transmitted from the communication unit 36 to the image processing apparatus 10, 20, 30, 30a or 40.

  The computer program recorded on the recording medium 39 such as a CD-ROM is read by the external storage device 37 and stored in the hard disk 33. The computer program is read to the RAM 32 and executed by the CPU 31, thereby causing the CPU 31 to perform the above-described processing. It can be operated as a means. It is also possible for the communication unit 36 to accept a computer program from another device and store it in the hard disk 33.

  FIG. 14 is a diagram illustrating an example of printing document data. For example, when the color (important color) of the important part 802 of the document data 800 stored in the hard disk 33 is blue, the color of the other part 801 is black, and the specific color is red, as described above, the computer 22 CPU 31 generates document data 810 obtained by converting the important color (important portion 802) into the specific color (specific color portion 804). The created document data 810 is transmitted from the communication unit 36 to the image processing apparatus 10, 20, 30, 30 a or 40. As described above, for example, the document data 820 in which the specific color portion 804 is erased (for example, converted into white) is obtained. Printed.

  The conversion color information stored in the hard disk 33 can be updated by the CPU 31 in accordance with a selection operation from the input unit 34, for example. The user who creates the document data by the computer 22 can use any color for the important part without being restricted by the specific color on the image processing apparatus 10, 20, 30, 30a or 40 side. The degree of freedom increases and convenience is improved.

  In the seventh embodiment described above, an important color unique to a user is converted to a specific color. However, for example, a specific color in a print document can be converted to a non-specific color. For example, it is possible to register a non-specific color in the conversion color information of the hard disk 33 and to convert a specific color portion of the document data into a non-specific color by the CPU 31. When the user uses a specific color regardless of importance, the specific color portion is converted to a non-specific color to prevent the image processing apparatus 10, 20, 30, 30a or 40 from being erased. Is possible. Further, when it is desired to print a specific color portion, it is possible to prevent the specific color portion from being erased on the side of the image processing device 10, 20, 30, 30a or 40 by converting it to a non-specific color.

  Further, the CPU 31 can convert the specific color portion into an erased color or a predetermined mark. For example, when printing on white paper, the specific color portion can be converted to white (erased color). By converting the specific color portion to the erasure color, it is not necessary to delete the specific color (for example, convert to white) on the image processing device 10, 20, 30, 30a or 40 side, and the image processing device 10, 20, 30, The load of output processing on the 30a or 40 side is reduced.

  The conversion of the important color portion in the document data to the specific color and the conversion of the specific color portion in the document data to the non-specific color can be performed simultaneously. For example, the important color and the non-specific color are registered in the conversion color information, and the specific color portion is converted into the non-specific color by the CPU 31 according to the instruction from the input unit 34, and then the important color portion is converted into the specific color. It is also possible to do.

  Further, under the control of the CPU 31, an output instruction or an output stop instruction for a specific color portion received by the input unit 34 can be transmitted from the communication unit 36 to the image processing apparatus 10, 20, 30, 30 a or 40. The image data transmitted to the image processing apparatus 10, 20, 30, 30a or 40 can be encrypted by the CPU 31.

(Eighth embodiment)
FIG. 15 is a block diagram illustrating a configuration example of the computer 22 connected to the above-described image processing apparatus 10, 20, 30, 30a, or 40, and has the same configuration as the computer 22 illustrated in FIG. The hard disk 33 stores important color in the document data to be converted into the specific color, conversion color information regarding the non-specific color that is the conversion destination of the specific color in the document data, and the important document flag (for example, Document data to which “1” is important and “0” is not important) is stored. The CPU 31 performs conversion from the important color to the specific color or from the specific color to the non-specific color based on the important document flag of the document data.

  FIG. 16 is a flowchart showing a color conversion procedure. When the CPU 31 receives a print instruction for the document data stored in the hard disk 33 from the input unit 34, the CPU 31 is based on the important document flag, specific color information, and conversion color information of the document data to be printed stored in the hard disk 33. Color conversion. In the case of an important document (important flag = “1”) (S20: YES), an important part (important color part) exists (S22: YES), and when the important part is a character (S24: YES), the CPU 31 is important. The color portion is converted into a specific color (S26). If the document is not an important document (important flag = “0”) (S20: NO), and the specific color portion exists (S32: YES), the CPU 31 converts the specific color portion into a non-specific color (S34).

  In the eighth embodiment described above, the important color portion is converted into the specific color. However, it is also possible to convert a predetermined typeface / format portion such as an underline portion or an italic portion into the specific color.

  The specific color can be specified in a range having a certain extent. FIG. 17 is a color map diagram schematically showing the distribution of colors used by the computer 22. In the example of FIG. 17, there are roughly R (red), Y (yellow), G (green), C (light blue), B (blue), and M (purple) areas in the color map. To do. For example, when a specific color is included in the G area, a specific color region including the specific color in the G area can be handled as the specific color.

  For example, when the specific color is read by the image reading unit 100 or when the specific color is printed by the image forming unit 140, the read specific color or the printed specific color may be slightly different from the original specific color. . By designating the specific color in the specific color region, the slightly different specific color can be detected correctly. The setting of the color map and the specific color area is stored in advance in the hard disk 33, for example.

  In the seventh or eighth embodiment, a non-specific color is set in the same area (G area in the example) as the specific color shown in FIG. 17, and the CPU 31 converts the specific color portion into a non-specific color. Thus, the specific color portion can be printed (output) with a non-specific color similar to the specific color. For example, it is possible to improve the convenience of creating a confidential document by preventing copying of a specific color portion and enabling printer output with a non-specific color similar to the specific color portion. For example, in the case of graphic data that includes a specific color with low confidentiality, the specific color can be output in a state close to the original graphic by converting it to a non-specific color similar to the specific color. .

It is a block diagram which shows the structure of the image processing apparatus which concerns on this invention. It is a block diagram which shows the communication network to which the image processing apparatus was connected. FIG. 2 is a diagram illustrating a detailed configuration of a part mainly related to image reading and image formation of the image processing apparatus. It is a figure which shows schematic structure of an image formation part. (A) is a figure which shows the example of a manuscript, (b) And (c) is a figure which shows the example of a recording paper. It is a block diagram which shows the structure of the other image processing apparatus which concerns on this invention. It is a block diagram which shows the structure of the other image processing apparatus which concerns on this invention. It is a block diagram which shows the structure of the image processing apparatus which memorize | stores image data (both a specific color part and a specific color part) in RAM. It is a figure which shows the example of the printed recording paper. It is a flowchart which shows the example of the separation procedure of a specific color when a specific color is contained in a figure. It is a block diagram which shows the example of the image processing apparatus which stops the output of a specific color part according to a transmission destination. It is a figure which shows the example of the specific color information to which the security level was set. It is a block diagram which shows the structural example of the computer (information processing apparatus) connected to the image processing apparatus of this invention. It is a figure which shows the example of printing of document data. It is a block diagram which shows the structural example of the computer connected to the image processing apparatus of this invention. It is a flowchart which shows the procedure of color conversion. FIG. 3 is a color map diagram schematically illustrating a color distribution used by a computer.

Explanation of symbols

10, 20, 30, 30a, 40 Image processing device 22 Computer 26 Network 31 CPU
DESCRIPTION OF SYMBOLS 100 Image reading part 110 Color restriction part 120,220,420 Control part 130,230,230a Image processing part 140 Image formation part 150 Communication part 160 Operation part 170,470 Storage part 180 Image memory 210,210a Color separation part 280 1st Image memory 282 Second image memory 284 Encryption unit 286 Decryption unit 380 Hard disk 382 RAM

Claims (21)

In an image processing method using an image processing apparatus that accepts color image data, stores the color image data in a storage unit, and outputs the color image data stored in the storage unit.
Authenticating the request source of the received color image data output process;
A step of extracting the specific color portion of the received color image data if the authentication is not completed, the output of the extracted specific color portion is to be stopped, and the specific color of the specific color portion to be output is stopped. An image processing method characterized by accepting designation of the image. In an image processing method using an image processing apparatus that accepts color image data, stores the color image data in a storage unit, and outputs the color image data stored in the storage unit.
Authenticating the request source of the received color image data output process;
Extracting the specific color portion of the received color image data, and if the authentication is not completed, the output of the extracted specific color portion is stopped, and the specific color of the specific color portion to be stopped is stopped. An image processing method characterized by accepting designation of the image. In an image processing apparatus that receives color image data and stores it in a storage unit, and performs output processing of the color image data stored in the storage unit.
Authentication means for authenticating the request source of the output processing of the received color image data;
An extraction unit that extracts a specific color portion of the received color image data if the authentication by the authentication unit is not completed;
Output stopping means for stopping output of the specific color portion extracted by the extracting means ;
An image processing apparatus comprising: a specific color accepting unit that accepts designation of a specific color of the specific color part for which output is to be stopped . In an image processing apparatus that receives color image data and stores it in a storage unit, and performs output processing of the color image data stored in the storage unit.
Authentication means for authenticating the request source of the output processing of the received color image data;
Extracting means for extracting a specific color portion of the received color image data;
An output canceling means for canceling the output of the specific color portion extracted by the extracting means when the authentication by the authenticating means is not completed ;
An image processing apparatus comprising: a specific color accepting unit that accepts designation of a specific color of the specific color part for which output is to be stopped . The storage unit
A semiconductor storage device for storing a specific color portion of the received image data;
The image processing apparatus according to claim 3, further comprising: a magnetic storage device that stores a non-specific color portion excluding the specific color portion of the received image data. If the output processing is completed, the image processing apparatus according to any one of claims 3 to 5, characterized in that it comprises the erasing means for erasing the specific color part output processing stored in the storage unit is completed . The image processing apparatus according to any one of claims 3 to 6, characterized in that it comprises an encryption means for encrypting specific color portion to be stored in the storage unit. Wherein the specific color, the image processing apparatus according to any one of claim 3, wherein 7 to be a plurality of colors. The image processing apparatus according to claim 8, wherein importance is set for the specific color. The specific color portion, an image processing apparatus according to one claim 3, wherein 9 to be a character portion of a specific color. The specific color portion, an image processing apparatus according to any one of claims 3 to 9, characterized in that the graphic portion including a specific color. The output suspended unit, the image processing apparatus according to any one of claims 3 to 11, characterized in that it is configured to replace a particular color portion in a predetermined mark. 13. The image processing apparatus according to claim 3, further comprising a notification unit configured to notify the output stop of the specific color portion when the output of the specific color portion is stopped. 13 . The output processing includes transmission of image data;
The image processing apparatus according to one claim 3, characterized in that it comprises an encryption means for encrypting a particular color portion of the image data to be transmitted 13. The image processing apparatus according to any one of claims 3 to 14, characterized in that it comprises a transmitting means for transmitting a specific color information about a particular color to the accepted destination the color image data. An information processing apparatus that transmits the color image data to the image processing apparatus according to any one of claims 3 to 15 ,
A receiving means for receiving specific color information relating to the specific color;
An information processing apparatus comprising: conversion means for converting a predetermined color in the color image data to be transmitted to the image processing apparatus into the specific color. A computer program for causing a computer to transmit the color image data to the image processing apparatus according to any one of claims 3 to 15 ,
A procedure for causing a computer to accept specific color information about a specific color;
A computer program comprising: causing a computer to convert a predetermined color in the color image data to be transmitted to the image processing device into the specific color. 18. The computer program according to claim 17 , further comprising a procedure for causing the computer to encrypt a specific color portion of the color image data to be transmitted to the image processing apparatus. A computer program for causing a computer to transmit the color image data to the image processing apparatus according to any one of claims 3 to 15 ,
A procedure for causing a computer to accept specific color information about a specific color;
A computer program comprising: causing a computer to convert the specific color portion in the color image data to be transmitted to the image processing device into an erasure color. A computer program for causing a computer to transmit the color image data to the image processing apparatus according to any one of claims 3 to 15 ,
A procedure for causing a computer to accept specific color information about a specific color;
A computer program comprising: causing a computer to convert the specific color in the color image data to be transmitted to the image processing device into a non-specific color. A computer program for causing a computer to transmit the color image data to the image processing apparatus according to any one of claims 3 to 15 ,
A procedure for causing a computer to accept an output instruction or an output stop instruction for a specific color part;
A computer program comprising: causing a computer to transmit an accepted output instruction or output stop instruction to the image processing apparatus.

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