JP2004297758A - Image processing method, image processing apparatus, information processing apparatus, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing method, an image processing apparatus, an information processing apparatus, and a computer program which improve the convenience in making and handling a secret document to become a output-stop object at copying, at printing, or at transmitting a facsimile keeping high security. <P>SOLUTION: When a color manuscript whose secret part is mentioned by a specified color is read by an image reading portion 100, the image processing apparatus 10 receives an identification information such as a password from an operation portion 160, collates the received identification information to a user information stored in a storage portion 170 at a control portion 120, and identifies it. When the identification is not completed , an output stopping indication of the specified color is sent from the control portion 120 to a color restriction portion 110, the color restriction portion 110 erases the specified color portion of an image data received from the image reading portion 100, and the image data whose specified color portion is erased and sent to an image memory 180 is sent to an image forming portion 140 and printed on a recording paper. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

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

2. Description of the Related Art There is an image processing apparatus that restricts copying, printing or fax transmission of a highly confidential document. For example, an image processing apparatus and an image processing system have been proposed in which a public key is embedded in a confidential document so that copying is impossible without a corresponding private key, thereby preventing copying by an unspecified number of users (for example, Patent Document 1). Further, there has been proposed an image processing apparatus that creates a copy from which a seal or writing of vermilion is removed by copying the document excluding, for example, vermilion portions (for example, see Patent Documents 2 and 3).
JP-A-11-215351 JP-A-9-214782 JP-A-3-198476

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

  Further, in the image processing apparatus and the like in Patent Documents 2 and 3, since colors for which copying is prohibited are determined, colors that can be used in general documents or the like are limited, or confidential portions need to be described in the determined colors. For example, there is a problem that the convenience of document creation is reduced.

  The present invention has been made in view of the above problems, and it is possible to improve the convenience of creating and handling a confidential document to be output suspended during copying, printing, or fax transmission while maintaining high security. It is an object to provide a possible image processing method, image processing device, information processing device, and computer program.

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

  An image processing method according to the present invention is an image processing method using an image processing apparatus that receives and stores color image data in a storage unit and performs an output process of the color image data stored in the storage unit. Authenticating the requester of the data output process; and, if the authentication is not completed, extracting a specific color portion of the received color image data, and stopping the output of the extracted specific color portion. It is characterized by.

  An image processing method according to the present invention is an image processing method using an image processing apparatus that receives and stores color image data in a storage unit and performs an output process of the color image data stored in the storage unit. Authenticating the requester of the data output process; and 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 stopped. It is characterized by.

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives color image data, stores the color image data in a storage unit, and performs an output process of the color image data stored in the storage unit. An authentication unit for authenticating the original, an extraction unit for extracting a specific color portion of the received color image data when the authentication by the authentication unit is not completed, and an output of the specific color portion extracted by the extraction unit is stopped Output stopping means.

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives color image data, stores the color image data in a storage unit, and performs an output process of the color image data stored in the storage unit. Authentication means for authenticating the original, extraction means for extracting a 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 if the authentication by the authentication means is not completed Means.

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives and stores color image data in a storage unit, and performs an output process of the color image data stored in the storage unit. Instruction receiving means for receiving an output instruction or an output stop instruction; extracting means for extracting a specific color portion of the received color image data when the instruction receiving means receives the output stop instruction; and specific color extracted by the extracting means Output stopping means for stopping the output of the part.

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives and stores color image data in a storage unit, and performs an output process of the color image data stored in the storage unit. An instruction receiving unit that receives an output instruction or an output stop instruction; an extracting unit that extracts a specific color part of the received color image data; and an instruction receiving unit that receives the output stop instruction. And an output stopping means for stopping the output.

  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 the received image data. And a magnetic storage device.

  The image processing apparatus according to the present invention is characterized in that, when the output processing is completed, the image processing apparatus further includes an erasing unit that erases the specific color portion stored in the storage unit and having been output.

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

  An image processing apparatus according to the present invention includes a specific color receiving unit that receives specification of a specific color.

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

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

  In the image processing apparatus according to the present invention, 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 stopping means is configured to replace a specific color portion with a predetermined mark.

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

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives color image data, stores the received color image data in a storage unit, and performs output processing including transmission of the color image data stored in the storage unit. A destination storage unit in which a destination to which transmission of a color part is permitted is stored, and a specific color part of the received color image data is stored when the destination of the received color image data is not stored in the destination storage unit. It is characterized by comprising extraction means for extracting, and transmission stop means for stopping transmission of the specific color portion extracted by the extraction means.

  An image processing apparatus according to an aspect of the present invention is an image processing apparatus that receives color image data, stores the received color image data in a storage unit, and performs output processing including transmission of the color image data stored in the storage unit. A destination storage unit in which a destination to which transmission of a color part is permitted is stored; an extracting unit for extracting a specific color part of the received color image data; and a destination storage unit for the destination of the received color image data. A transmission stop unit that stops transmission of the specific color portion extracted by the extraction unit when the information is not stored.

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

  An image processing apparatus according to the present invention includes a transmission unit that transmits specific color information about a specific color.

  An information processing apparatus according to the present invention is an information processing apparatus for transmitting image data to the image processing apparatus, comprising: a receiving unit for receiving specific color information related to a specific color; Conversion means for converting a color into the specific color.

  A computer program according to the present invention is a computer program that causes a computer to transmit image data to the image processing apparatus, the procedure causing the computer to receive specific color information relating to a specific color, and the computer to transmit the image data to the image processing apparatus. Converting a predetermined color in the image data to be transmitted to the specific color.

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

  A computer program according to the present invention is a computer program that causes a computer to transmit image data to the image processing apparatus, the procedure causing the computer to receive specific color information relating to a specific color, and the computer to transmit the image data to the image processing apparatus. Converting the specific color portion in the image data to be transmitted to an erasure color.

  A computer program according to the present invention is a computer program that causes a computer to transmit image data to the image processing apparatus, the procedure causing the computer to receive specific color information relating to a specific color, and the computer to transmit the image data to the image processing apparatus. Converting the specific color into non-specific color in the image data to be transmitted.

  A computer program according to the present invention is a computer program that causes a computer to transmit image data to the image processing apparatus, the procedure causing the computer to receive an instruction to output a specific color portion or an instruction to stop output. Transmitting the output instruction or the 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 the 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 a document is created, for example, a normal part is often described in black, and an important part is often described in a specific color other than black. When performing output processing of image data including a specific color, if an output request source can be authenticated, 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 the output request source cannot be authenticated, only the non-specific color portion (normal portion) excluding the specific color portion (important portion) is output. As the image data, a color image of a document can be read by a color scanner, or color image data or document data can be received from a computer. Further, the received image data can be printed on a recording sheet or transmitted by facsimile. Since the output / stop of the important part (specific color part) can be switched in accordance with the authentication result, the convenience for 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. Further, a 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 of the specific color portion extracted by the extraction unit is stopped by the output stop unit. When performing output processing of image data including a specific color, if an output request source can be authenticated, 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 the output request source cannot be authenticated, only the non-specific color portion (normal portion) excluding the specific color portion (important portion) is output. Since the output / stop of the important part (specific color part) can be switched in accordance with the authentication result, the convenience for 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 addition, by performing the authentication and the extraction of the specific color portion in parallel, the output processing of the image data can be efficiently performed.

  In the present invention, an instruction to output a specific color portion or an instruction to stop output is received by the instruction receiving unit. 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 performing output processing of image data including a specific color, if an output instruction is received, 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 the output stop instruction is received, only the non-specific color portion (normal portion) excluding the specific color portion (important portion) is output. Since it is possible to switch by outputting / stopping the output of the important part (specific color part), the convenience for the user is improved.

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

  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. Further, by storing the specific color portion (important portion) in a semiconductor storage device such as RAM without storing it in a magnetic storage device such as a hard disk, the important portion (specific color portion) is stored only temporarily. , Improve security.

  In the present invention, when the output processing is completed, the specific color portion stored in the storage unit and completed with the output processing is erased by the erasing means. By immediately deleting the specific color portion for which the output processing has been completed, it is possible to reduce the possibility that an important portion is illegally read from the storage unit.

  In the present invention, the specific color portion stored in the storage unit is encrypted by the encryption unit. By encrypting the specific color portion and storing it in the storage portion, even if the specific color portion is read out from the storage portion, it is possible to prevent the contents of the specific color portion from being leaked and to improve security. 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, the specific color specification is received by the specific color receiving unit, and the control of outputting / stopping the output of the received specific color is performed. The color used for the important part varies depending on the user, and depending on the use environment, there are cases where the important color (specific color) is predetermined or a color that cannot be used as the important color (specific color). is there. By accepting the designation of the specific color and making it changeable, the user can flexibly change the specific color, and the convenience is improved.

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

  In the present invention, the specific color portion is a character portion of a specific color. By not outputting the character portion of the specific color, it is possible to prevent the contents of the important portion in the document from being leaked, thereby improving security.

  In the present invention, the specific color portion is a graphic portion including the specific color. If the specific color portion is a part of the graphic, the erased specific color portion may be easily guessed depending on the contents of the figure even if the specific color portion is deleted (for example, converted to 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 output, thereby improving security.

  In the present invention, the output stop unit stops the output of the specific color portion by replacing the specific color portion with the predetermined mark. For example, a specific color portion can be replaced with an underline or a solid 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 may misunderstand that there is a mistake in creating a document or a malfunction of the machine. By indicating the specific color portion with a predetermined mark such as an underline, it is possible to clearly indicate to the user that the printing has not been performed intentionally.

  In the present invention, when the output of the specific color portion is stopped, the output stop of the specific color portion is notified by the notification unit. 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 may misunderstand that there is a mistake in creating a document or a malfunction of the machine. By notifying that the specific color portion has not been output, it becomes possible for the user to recognize that printing was not intentionally performed.

  In the present invention, a destination to which transmission of a specific color portion is permitted is stored in the destination storage unit. When the destination of the received color image data is not stored in the destination storage unit, the specific color portion of the received color image data is extracted by the extracting unit, and the transmission of the extracted specific color portion is stopped by the output stopping unit. . When transmitting to a destination other than the preset destination, the specific color portion is not output, so even if, for example, a fax number is incorrectly input, it is possible to prevent transmission of an important portion to an unknown destination. is there.

  In the present invention, a destination to which transmission of a specific color portion is permitted is stored in the destination storage unit. Further, a specific color portion of the received color image data is extracted by the extracting means. If the destination of the received color image data is not stored in the destination storage unit, the transmission of the specific color portion extracted by the extracting unit is stopped by the output stopping unit. When transmitting to a destination other than the preset destination, the specific color portion is not output, so even if, for example, a fax number is incorrectly input, it is possible to prevent transmission of an important portion to an unknown destination. is there. In addition, the image data output process can be performed efficiently by executing the determination of whether the destination is stored in the destination storage unit and the extraction of the specific color portion in parallel.

  In the present invention, the output process includes transmission of image data, and a specific color portion to be transmitted is encrypted by an encryption unit. The encryption method and key are determined in advance, and the encrypted image data is decrypted at the transmission destination. When transmitting image data by facsimile, etc., by encrypting a specific color part (important part), it is possible to prevent leakage of important parts even if the transmitted data is illegally read during transmission. It is possible.

  In the present invention, the image processing apparatus transmits specific color information relating to a specific color from the transmission unit. Also, an information processing apparatus such as a computer that transmits image data to the image processing apparatus receives specific color information relating to a specific color by the receiving unit, and converts the predetermined color in the image data to be transmitted to the image processing apparatus by the conversion unit. Convert to color. By transmitting specific color information relating to a specific color from the image processing apparatus to the computer, it becomes possible for the computer to convert a predetermined color into the specific color and to transmit the specific color to the image processing apparatus. The colors used for important parts vary depending on the user, but it is possible for the computer to convert the important colors (predetermined colors) used independently by the user to the specific colors specified by the image processing device. Therefore, the user can flexibly set the color (important color) to be used for the important part, and the convenience is improved.

  In the present invention, the computer that transmits image data to the image processing device encrypts the image data that is transmitted to the image processing device. The encryption method and key are determined in advance, and the encrypted image data is decrypted by the image processing device. 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 image data to the image processing apparatus receives specific color information relating to a 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 (erase color). It is also possible to convert a specific color into a predetermined mark such as an underline or a solid mark. By transmitting specific color information relating to a specific color from the image processing apparatus to the computer, the computer can convert the specific color into an erasing color (or a predetermined mark) and transmit the specific color 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 does not need to perform the output stop processing of the specific color, and can reduce the load of the output processing.

  In the present invention, the computer that transmits image data to the image processing apparatus acquires specific color information related to a specific color from the image processing apparatus, and converts the specific color in the image data to be transmitted to the image processing apparatus to a non-specific color I 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, printing of the confidential document is often performed by a user who creates the confidential document on a computer (creator of the confidential document), and the possibility of the confidential document being leaked is low. It is possible to improve the convenience of a user who creates a confidential document at the time of printing.

  In the present invention, a computer that transmits image data to an image processing apparatus receives an output instruction or an output stop instruction for a specific color portion, and transmits the received output instruction or 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 using a keyboard, and instruct the image processing apparatus to output / stop output of a specific color. Since it is possible to give an instruction 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, it is possible to switch the output / output suspension of a specific color portion (important portion) in accordance with the authentication result of the output request source. Printing or facsimile transmission can be prevented, and user convenience is improved. In addition, it is possible to switch between transmission / stop of transmission of a specific color portion (important portion) according to the transmission destination. Therefore, even if a fax number is erroneously input, for example, an important portion to an unknown transmission destination can be transmitted. Transmission can be prevented and user convenience is improved.

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

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

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

  According to the present invention, by transmitting specific color information from an image processing apparatus to a computer, it becomes possible for the computer to process print data (image data) transmitted from the computer to the image processing apparatus. For example, it is possible to convert an important color used independently by the user into a specific color designated by 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 the embodiments.
(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 limiting unit 110 connected to the image reading unit 100 and the communication unit 150, an image memory 180 connected to the color limiting unit 110, 180, an image processing unit 130 connected to the communication unit 150, an image forming unit 140 connected to the image processing unit 130, a control unit 120 connected to each unit and controlling each unit, and a control unit 120 connected to the control unit 120. Storage unit 170 and an operation unit 160.

  The operation unit 160 includes, for example, an operation panel 161 and a liquid crystal panel 162, and the control unit 120 can receive an operation instruction from the operation panel 161 and display the processing status on the liquid crystal panel 162. The image processing apparatus 10 (communication unit 150) is connected to a network 26 to which the 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 facsimile 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, in addition to printing or facsimile transmission, image data transmission or e-mail transmission to the computer 22.

  The image reading unit 100 reads a color document and outputs image data converted into a plurality of color components (for example, a color scanner). The image forming unit 140 transmits the received image data to an image carrier by an exposure unit. The latent image is formed as an electrostatic latent image, the electrostatic latent image is visualized by 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 limiting unit 110. The communication unit 150 controls communication with the network 26, receives image data from, for example, the computer 22, and sends the received image data to the color limiting 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 a specific color portion of the image data. The control unit 120 controls the image reading unit 100 or the communication unit 150. Operates as a unit (authentication unit) for authenticating the output request source of the received image data, and when the authentication is not completed, gives an instruction to stop outputting the specific color portion to the color limiting unit.

  The color restricting unit 110 extracts a specific color portion of the image data received from the image reading unit 100 or the communication unit 150 when an instruction to stop outputting a specific color portion (including specific color information) is given from the control unit 120. The means (extracting means) operates as a means (output stopping means) for stopping the output of the extracted specific color portion. For example, when printing is performed on white paper, the color limiting unit 110 can convert a specific color into an erasing color (white) or fill a specific color portion with white or the like. The image data from which the specific color portion has been deleted (converted to white) is sent from the color limiting unit 110 to the image memory (storage unit) 180. When there is no output stop instruction from the control unit 120, the color limiting 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 image data read from the image memory 180 in response to, for example, an instruction from the operation unit 160. Further, the image processing unit 130 sends the image data to the image forming unit 140 or the communication unit 150 according to 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 recording paper by forming an electrostatic latent image of the image data received from the image processing unit 130 on a photoconductor. Further, the communication unit 150 transmits the image data received from the image processing unit 130 to the transmission destination (the computer 22 or an external fax machine) specified by the control unit 120.

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

  An automatic document feeder 680 that automatically conveys a document and performs a document reading operation is provided above the document table 670. When an original is set on the paper feed tray 681, the automatic document feeder 680 feeds the originals one by one into the paper feed path 682. The fed document is temporarily stopped with its leading end pressed against the PS roller 683. By turning on the clutch (not shown), the PS roller 683 can be connected to the drive unit of the transport motor (not shown) to restart the transportation of the temporarily stopped document, and send the document to the document reading window 688.

  By moving the exposure light source 671 immediately below the document reading window 688 and irradiating the document with light in accordance with the timing of the start of document transport, reflected light from the document is transmitted to the CCD 673 via each part of the optical system. Be guided. 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 a laser beam is applied to the surface of the image carrier (photoconductor) 611 by a laser scanning unit (LSU) 621. Irradiation forms 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 that develops the electrostatic latent image on the surface of the photoconductor 611 into a visible image with toner is disposed. Around the photoconductor 611, a transfer charger 613 for transferring a toner image on the surface of the photoconductor 611 to paper, a cleaning device for removing residual toner on the surface of the photoconductor 611, and a charger for charging the surface of the photoconductor 611 to a predetermined potential. 612 and an LSU 621 for irradiating a laser toward a laser irradiation point of the photoconductor 611 are arranged.

  It is assumed that the image processing apparatus 10 of the present description is compatible with reading and outputting (printing) a color image. 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 data is converted into an output image for each page, and color separation is performed for each page. For example, the color is separated into Y (yellow), M (magenta), C (cyan), and BK (black). The color-separated image data is sent to the image forming unit 140, and the image forming unit 140 forms an electrostatic latent image of each color on a photoconductor of each color, and transfers each color image to recording paper, and To 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 passage of the paper along the conveyance path from the paper supply side to the paper discharge side of the recording paper. A pre-registration detection switch (not shown), a PS roller 632 for aligning the toner image on the photoconductor 611 with the paper based on the signal of the pre-registration detection switch, and a heating roller pressing the toner image on the paper. A fixing roller unit 650 for fixing the sheet to the paper by a roller, a fixing paper detection switch (not shown) for detecting that the sheet has passed through the fixing roller unit 650, and an illustration for detecting that the sheet has passed on the sheet discharge conveyance path 635 A discharge detection switch that does not operate and a discharge roller 636 that discharges the recording paper are arranged. The recording paper is discharged from the paper cassette 630 through the above-described members 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 part 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, Control unit 120 compares the received authentication information with the user information stored in storage unit 170, and performs authentication. If the authentication is not completed, the control unit 120 sends an instruction to stop outputting the specific color to the color limiting unit 110, and the color limiting unit 110 determines whether the specific color portion of the image data received from the image reading unit 100 or the communication unit 150 (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 has been 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 limiting unit 110, and the color limiting unit 110 stores 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 is printed on a recording sheet. Alternatively, the image data is sent to the communication unit 150 via the image processing unit 130 and transmitted by facsimile.

  FIG. 5A is a diagram illustrating an example of a document, and FIGS. 5B and 5C are diagrams illustrating an example of a printed recording sheet. The document 700 shown in FIG. 5A includes, for example, a specific color portion 702 described in red and a non-specific color portion 701 described in black. If the authentication is not completed by the control of the control unit 120, the specific color portion is erased (converted to white) by the color limiting unit 110 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 limiting unit 110 transfers the image data as it is, as described above, and as shown in FIG. Both 702 and the non-specific color portion 701 are recorded.

  The printing on the recording paper has been described above as an example. However, 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 facsimile. Further, the image data received by the communication unit 150 from the computer 22 can be printed by the image forming unit 140 or transmitted by fax from the communication unit 150.

  For the authentication, in addition to accepting the password at 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 transmitted to the control unit 120. Is possible. Further, an arbitrary authentication method, such as receiving the IP address of the computer 22 by the communication unit 150 and using it for authentication, can be used.

  Output (printing) of image data including a specific color portion is performed, for example, in a case where the color image read by the image reading unit 100 is directly output in color, and in addition, for example, when the image forming unit 140 supports only black-and-white printing. 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 above-described embodiment, the output / stop of the specific color portion is performed in accordance with the completion / incomplete of the user authentication. However, the user may instruct the 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) for receiving an instruction to output a specific color portion or an instruction to stop output, and causes the color limiting unit 110 to output an instruction or an output stop instruction from the control unit 120. , It is also possible to operate as a means for extracting a specific color part (extraction means) and a means for stopping the output of the extracted specific color part (for example, converting the specific color part to white) (output stop means). .

  For example, by default, the output of the specific color portion is set in the control unit 120 or the storage unit 170 so as to be stopped, and the user instructs the operation unit 160 or the communication unit 150 (computer 22) to output the specific color as necessary. It is possible to give In this case, the control unit 120 normally gives an instruction to stop outputting the specific color portion to the color restricting unit 110. However, when receiving the instruction to output the specific color, the control unit 120 does not issue the instruction to stop outputting the specific color portion. Similarly, by default, a specific color portion is output, and when the user gives an instruction to stop outputting the specific color portion, the color restricting unit 110 deletes the specific color portion (for example, converts it to white). In response to the output instruction or the output stop instruction, it is possible to output the specific color portion or stop the output. The erasure of the specific color portion (extraction of the specific color portion and conversion of the extracted specific color portion to, for example, white) can also 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 according to 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 used frequently, such as in an emphasized part (not a confidential part), blue can be set as a specific color. However, it is preferable to update the specific color information when the authentication based on the user information is completed.

  When the image processing apparatus 10 receives image data including a specific color portion from the computer 22 and prints the image data, a user who creates a confidential document including the specific color portion on the computer 22 prints the document to confirm the content. It is likely that you are doing. In consideration of user's convenience, it is also possible to set the user information or the operation of the control unit 120 so that the image data received by the communication unit 150 from the computer 22 is printed as it is.

  By restricting copying or printing of a confidential portion described in a specific color, security can be improved. Further, it is also possible to copy or print a specific color portion by authentication or instruction, and it is possible to improve user convenience while maintaining high security. In addition, since confidentiality is realized by describing the confidential portion in a specific color, it is possible to easily and efficiently create a document including the confidential portion.

(Second embodiment)
FIG. 6 is a block diagram showing a configuration of another image processing device 20 according to the present invention. The image processing device 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, which are the same as those in the first embodiment. 170 and a first image memory 280.

  In the present embodiment, the image processing device 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, The image processing apparatus further includes a second image memory 282 connected to the decoding 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. The above components are 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 from a non-specific color portion. The non-specific color portion is sent to the first image memory 280. The encryption unit 284 encrypts the specific color part received from the color separation unit 210 and sends the encrypted specific color part to the second image memory 282.

  The decryption 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 stop 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 the output of the specific color from the control unit 220. If the instruction has been given, only the non-specific color portion is sent to the image forming unit 140 or the communication unit 150. When the control unit 220 does not give an instruction to stop outputting a specific color, the image processing unit 230 separates the specific color part and the non-specific color part from the original image data before being separated by the color separation unit 210. And sends it to the image forming unit 140 or the communication unit 150.

  In the above-described second embodiment, 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 a non-specific color part in the first storage area, and store an encrypted specific color part in the second storage area. The 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 contents of the image memory are read out, the confidential portion (specific color portion) is encrypted. ) Can be prevented.

  Further, when the color separation unit (extraction unit, output stop unit) 210 receives an output stop instruction from the control unit 220, it is possible to stop the transfer of the specific color portion to the encryption unit 284. In this case, when the 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 device 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 unit similar to those of the second embodiment. A storage unit 170;

  In the present embodiment, the image processing device 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 from 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 stop 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 receives a specific color output stop instruction from the control unit 220. If so, only the non-specific color portion is sent to the image forming unit 140 or the communication unit 150. When the control unit 220 does not give an instruction to stop outputting a specific color, the image processing unit 230 converts the specific color part and the non-specific color part into the original image data before being separated by the color separation unit 210. 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 user convenience is improved. In addition, since the hard disk 380 stores the non-specific color portion excluding the confidential portion (specific color portion), there is little risk of leakage of the confidential portion.

  It is preferable that the control unit (erasing unit) 220 immediately erases the specific color portion that has been read from the RAM 382 and has been output. The control unit 220 immediately deletes the unnecessary part of the specific color (confidential part) after the output processing is completed, thereby preventing leakage of the confidential part and improving security.

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

  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 the output is stopped, the confidential portion (specific color portion) is not stored in the RAM 382, so that leakage of the confidential portion can be more securely prevented.

  Further, in the above-described second or third embodiment, the specific color portion is stored in the second image memory 282 or the RAM 382, but it is also possible to store both the specific color portion and the specified color portion. . FIG. 8 is a block diagram illustrating a configuration of an image processing device 30a that stores image data (both a specific color portion and a 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 a characteristic portion, separates a non-specific color portion, and 380, and sends the image data (both the specific color portion and the specific color portion) to the RAM 382. The image processing unit 230a transmits the image data including both the specific color portion and the specified color portion read from the RAM 382 or the image data including no specific color portion read from the hard disk 380 to the image forming unit 140 or the communication unit 150. Send to

  As described above, the image data is separated by extracting a specific color portion and separating it into a specific color portion and a non-specific color portion, and when authentication is completed, combining and outputting the specific color portion and the non-specific color portion, If authentication is not completed, output only the non-specific color part, or extract the specific color part and separate it into non-specific color part and image data (including both specific color part and non-specific color part) However, it is possible to output image data when the authentication is completed, and to output only the non-specific color portion when the authentication is not completed.

(Fourth embodiment)
In each of the embodiments described above, the specific color portion is erased, and only the non-specific color portion is printed (output) to prevent leakage of the confidential portion. However, the specific color portion may be replaced with a predetermined mark. It is. For example, in the second or third embodiment, the specific color part is replaced with an underline in the color separation unit 210, or the specific color part is replaced with an underline in the image processing unit 230, and the specific color part is underlined. It is possible to output a line 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, by not printing (outputting) the specific color portion 702, it is possible to prevent leakage of the confidential portion (specific color portion), but only the non-specific color portion 701 is printed. Therefore, there is a possibility that the user may erroneously recognize 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 representing the specific color portion with an underline 703.

  The method for clearly indicating that the specific color portion has not been 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, by replacing a specific color portion with a solid mark 704, it is possible to clearly indicate that printing was not performed intentionally.

  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 the printing is completed. It is possible to display on the liquid crystal panel 162 of the operation unit (notification unit) 160 or to notify the user's computer 22 from the communication unit (notification unit) 150. It is also possible to notify by voice from a speaker (notifying unit) (not shown) that the specific color portion is not printed, or to print a message on the header of the printed recording paper (notifying unit). By notifying that the specific color portion is not printed, it is possible to clearly indicate to the user that the confidential portion is not intentionally printed (output), thereby improving 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 portion is deleted (for example, converted to white), the erased portion (specific color portion) can be easily estimated depending on the content of the graphic. There is. When the specific color portion is a character, the content of the confidential portion (specific color portion) is hardly inferred from the print result, and the security is enhanced.

  Further, when the specific color portion is a part of the graphic, the color limiting section 110 (or the color separating section 220) preferably extracts (or separates) the entire graphic as a specific color portion. In the case of a figure, the erased part (specific color part) may be easily guessed depending on the contents of the figure even if the specific color part is erased. It is possible to prevent printing of included graphics and improve 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 the present embodiment, the image processing device 20 or 30 (FIG. 6 or 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 part (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 above-described embodiment, when the user authentication of the output request source is completed, the specific color portion is printed. For example, when the document including the confidential portion is fax-transmitted from the communication unit 150, depending on the transmission destination, It is also possible to switch transmission / stop of transmission 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 limiting 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, storage unit (destination storage unit) 470 stores destination information such as a fax number of a destination to which transmission of a confidential part is permitted. When receiving 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, and performs registration. If not, an instruction to stop outputting the specific color is given to the color limiting unit (extraction means, transmission stop means) 110.

  If the fax number of the transmission destination is registered in the transmission destination information of the storage unit 470, the specific color is not deleted by the color restriction unit 110. For example, as shown in FIG. The received image data is faxed as it is. If the fax number of the transmission destination 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, so that the specific color is erased by the color restriction unit 110 (for example, to a white color). 5), and the image data from which the specific color portion has been erased is transmitted by facsimile, for example, as shown in FIG.

  Since the specific color portion is transmitted only to the destination registered in advance, it is possible to prevent leakage of the confidential portion and enhance security. In addition, 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. In addition, since confidentiality is realized by describing the confidential portion in a specific color, facsimile transmission documents including the confidential portion can be created easily and efficiently.

  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 portion is transmitted from the operation unit 160 (operation panel 161) or the communication unit 150 (computer 22). It is also possible to receive an instruction to output / output a part and to output an instruction to stop output from the control unit 420 to the color limiting unit 110 in accordance with the received instruction to stop transmission of a specific color part.

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

  Encryption, when transmitting a specific color portion, it is possible to encrypt the specific color portion or the entire image data by a predetermined encryption method or key, etc., it is also possible to decrypt on the receiving fax machine, It is also possible that only a specific user on the receiving side can decode.

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

  In each of the above-described embodiments, a specific color can be set in a plurality of colors. In this case, any one of the plurality of specific colors may be used, so that user convenience is improved. It is also possible to set a security level for a plurality of specific colors and control output / output suspension in accordance with 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 security level. For example, the control unit 120, 220, or 420 controls output / output stop for a specific color portion of the upper two colors (purple, orange) of the security level, and lower two colors (green, blue) of the security level. It is possible to always output the specific color portion of. Output / output suspension is controlled according to the color used, so that the user's convenience in document creation and output is improved.

  In fax transmission, it is possible to set a confidential level (importance) at which transmission is permitted for each transmission destination. For example, in the transmission destination information of the storage unit 470, a confidential level at which transmission is permitted for each destination is set, and the control unit 420 transmits a specific color of the confidential level permitted for the transmission destination, It is possible to delete (stop transmission) a specific color of the security level that is not permitted. Similarly, it is also possible to set a security level at which the control unit 120, 220, or 420 permits output for each copy, print, or fax transmission. For example, the control unit 120, 220, or 420 controls 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. It is possible to do.

(Seventh embodiment)
FIG. 13 is a block diagram illustrating a configuration example of a computer (information processing apparatus) 22 according to the present invention connected to the above-described image processing apparatuses 10, 20, 30, 30a, or 40. The computer 22 includes a CPU (Central Processing Unit) 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 a network 26, 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, 30a, or 40. . The image processing apparatus 10, 20, 30, 30a, 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.

  Further, the hard disk 33 stores conversion color information regarding important colors unique to the user. When receiving an instruction to print the document data stored in the hard disk 33 from the input unit 34, the CPU 31 determines the 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. And converts the image data into a specific color, and transmits the converted image data from the communication unit 36 to the image processing apparatus 10, 20, 30, 30a, or 40.

  By reading out the computer program recorded on the recording medium 39 such as a CD-ROM in the external storage device 37 and storing it in the hard disk 33, and reading out the computer program to the RAM 32 and causing the CPU 31 to execute the same, the CPU 31 It is possible to operate as a means. Further, the communication unit 36 can receive 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 portion 802 of the document data 800 stored in the hard disk 33 is blue, the color of the other portion 801 is black, and the specific color is red, as described above, the computer 22 Document data 810 in which an important color (important portion 802) is converted into a specific color (specific color portion 804) by the CPU 31 is created. The created document data 810 is transmitted from the communication unit 36 to the image processing apparatus 10, 20, 30, 30a, or 40, and as described above, for example, the document data 820 from which the specific color portion 804 has been deleted (for example, converted to white) is obtained. Printed.

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

  In the above-described seventh embodiment, an important color unique to a user is converted into a specific color. However, for example, a specific color in a print document may be converted into a non-specific color. For example, a non-specific color can be registered in the conversion color information of the hard disk 33, and the CPU 31 can convert a specific color portion of the document data into a non-specific color. If 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 device 10, 20, 30, 30a, or 40 from being erased. It is possible to do. Further, when a specific color portion is to be printed, it is possible to convert the specific color portion into a non-specific color and prevent the image processing device 10, 20, 30, 30a, or 40 from being erased.

  Further, the CPU 31 can convert the specific color portion into an erasing color or a predetermined mark. For example, when printing on white paper, it is possible to convert a specific color portion to white (erase color). By converting the specific color portion to the erasure color, there is no need to delete (for example, convert to white) the specific color on the image processing device 10, 20, 30, 30a, or 40 side, and the image processing device 10, 20, 30, The load of the output processing on the 30a or 40 side is reduced.

  The above-described 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 CPU 31 converts the specific color portion into a non-specific color in accordance with an instruction from the input unit 34, and then converts the important color portion into the specific color. It is also possible.

  Further, under the control of the CPU 31, the output instruction or the output stop instruction of the specific color portion accepted by the input unit 34 can be transmitted from the communication unit 36 to the image processing apparatus 10, 20, 30, 30a, or 40. The image data to be transmitted to the image processing apparatuses 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 a computer 22 connected to the above-described image processing apparatuses 10, 20, 30, 30a, or 40, and has a configuration similar to that of the computer 22 illustrated in FIG. The hard disk 33 stores important color in the document data to be converted to the specific color, and conversion color information about a non-specific color to which the specific color in the document data is converted. Document data to which “1” is important and “0” is not important) are stored. The CPU 31 converts an important color into a specific color or a specific color into a non-specific color based on the important document flag of the document data.

  FIG. 16 is a flowchart showing the procedure of color conversion. 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 performs the processing based on the important document flag, the specific color information, and the converted color information of the document data to be printed stored in the hard disk 33. To perform color conversion. In the case of an important document (important flag = “1”) (S20: YES), when an important portion (important color portion) exists (S22: YES) and the important portion is a character (S24: YES), the CPU 31 determines the importance. The color part is converted to a specific color (S26). If the document is not an important document (important flag = "0") (S20: NO), and there is a specific color portion (S32: YES), the CPU 31 converts the specific color portion into a non-specific color (S34).

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

  Further, the specific color can be specified within a range having a certain extent. FIG. 17 is a diagram of a color map schematically showing a distribution of colors used by the computer 22. In the example of FIG. 17, areas of R (red), Y (yellow), G (green), C (light blue), B (blue), and M (purple) exist roughly in the color map. I 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 treated as the specific color.

  For example, when a specific color is read by the image reading unit 100 or a 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 area, the slightly different specific color can be correctly detected. The settings of the color map and the specific color area are stored in the hard disk 33 in advance, for example.

  Further, in the seventh or eighth embodiment, a non-specific color is set in the same area as the specific color shown in FIG. 17 (G area in the example in the figure), and the CPU 31 converts the specific color portion into a non-specific color. This makes it possible to print (output) a specific color portion in a non-specific color similar to the specific color. For example, the convenience of creating a confidential document can be improved by preventing copying of a specific color portion and enabling printer output in a non-specific color similar to the specific color portion. For example, in the case of graphic data having low confidentiality but including a specific color, the specific color can be converted to a non-specific color similar to the specific color, so that it can be output in a state close to the original graphic. .

1 is a block diagram illustrating a configuration of an image processing device according to the present invention. FIG. 2 is a block diagram illustrating a communication network to which the image processing device is connected. FIG. 2 is a diagram illustrating a detailed configuration of a portion mainly related to image reading and image formation of the image processing apparatus. FIG. 2 is a diagram illustrating a schematic configuration of an image forming unit. (A) is a diagram illustrating an example of a document, and (b) and (c) are diagrams illustrating an example of a recording sheet. FIG. 11 is a block diagram illustrating a configuration of another image processing apparatus according to the present invention. FIG. 11 is a block diagram illustrating a configuration of another image processing apparatus according to the present invention. FIG. 2 is a block diagram illustrating a configuration of an image processing apparatus that stores image data (both a specific color portion and a specific color portion) in a RAM. FIG. 4 is a diagram illustrating an example of a printed recording sheet. 9 is a flowchart illustrating an example of a specific color separation procedure when a specific color is included in a graphic. FIG. 14 is a block diagram illustrating an example of an image processing apparatus that stops outputting a specific color portion according to a transmission destination. FIG. 9 is a diagram illustrating an example of specific color information in which a security level is set. FIG. 3 is a block diagram illustrating a configuration example of a computer (information processing device) connected to the image processing device of the present invention. FIG. 7 is a diagram illustrating an example of printing document data. FIG. 3 is a block diagram illustrating a configuration example of a computer connected to the image processing apparatus of the present invention. 6 is a flowchart illustrating a procedure of color conversion. FIG. 4 is a diagram of a color map schematically showing a distribution of colors used by a computer.

Explanation of reference numerals

10, 20, 30, 30a, 40 Image processing device 22 Computer 26 Network 31 CPU
Reference Signs List 100 Image reading unit 110 Color limiting unit 120, 220, 420 Control unit 130, 230, 230a Image processing unit 140 Image forming unit 150 Communication unit 160 Operation unit 170, 470 Storage unit 180 Image memory 210, 210a Color separation unit 280 First Image memory 282 Second image memory 284 Encryption unit 286 Decryption unit 380 Hard disk 382 RAM

Claims (26)

An image processing method using an image processing apparatus that receives color image data and stores the color image data in a storage unit, and performs an output process of the color image data stored in the storage unit,
Authenticating the request source of the output processing of the received color image data;
Extracting the specific color portion of the received color image data if the authentication is not completed, and stopping the output of the extracted specific color portion. An image processing method using an image processing apparatus that receives color image data and stores the color image data in a storage unit, and performs an output process of the color image data stored in the storage unit,
Authenticating the request source of the output processing of the received color image data;
Extracting a specific color portion of the received color image data, and if the authentication is not completed, outputting the extracted specific color portion is stopped. In an image processing device that receives color image data and stores it in a storage unit, and performs an output process 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 when authentication by the authentication means is not completed;
An output canceling unit for canceling the output of the specific color portion extracted by the extracting unit. In an image processing device that receives color image data and stores it in a storage unit, and performs an output process 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 image processing apparatus comprising: an output stopping unit that stops outputting the specific color portion extracted by the extracting unit when the authentication by the authentication unit is not completed. In an image processing device that receives color image data and stores it in a storage unit, and performs an output process of the color image data stored in the storage unit,
Instruction receiving means for receiving an output instruction or an output stop instruction for a specific color portion of the received color image data,
Extracting means for extracting a specific color portion of the received color image data when the instruction receiving means receives an output stop instruction;
An output canceling unit for canceling the output of the specific color portion extracted by the extracting unit. In an image processing device that receives color image data and stores it in a storage unit, and performs an output process of the color image data stored in the storage unit,
Instruction receiving means for receiving an output instruction or an output stop instruction for a specific color portion of the received color image data,
Extracting means for extracting a specific color portion of the received color image data;
An image processing apparatus comprising: an output canceling unit that stops outputting a specific color portion extracted by an extracting unit when an instruction receiving unit receives an output canceling instruction. The storage unit,
A semiconductor memory device in which a specific color portion of the received image data is stored;
The image processing apparatus according to claim 3, further comprising: a magnetic storage device configured to store a non-specific color portion excluding a specific color portion of the received image data.   The image processing apparatus according to claim 3, further comprising an erasing unit configured to erase a specific color portion, in which the output processing is completed, stored in the storage unit when the output processing is completed. .   The image processing apparatus according to claim 3, further comprising an encryption unit configured to encrypt a specific color portion stored in the storage unit.   The image processing apparatus according to claim 3, further comprising a specific color receiving unit that receives designation of a specific color.   The image processing apparatus according to claim 3, wherein the specific color is a plurality of colors.   The image processing apparatus according to claim 11, wherein importance is set for the specific color.   13. The image processing apparatus according to claim 3, wherein the specific color portion is a character portion of a specific color.   The image processing apparatus according to claim 3, wherein the specific color portion is a graphic portion including a specific color.   The image processing apparatus according to claim 3, wherein the output stop unit is configured to replace a specific color part with a predetermined mark.   The image processing apparatus according to any one of claims 3 to 15, further comprising a notification unit configured to notify that the output of the specific color portion is stopped when the output of the specific color portion is stopped. An image processing apparatus that receives color image data, stores the color image data in a storage unit, and performs an output process including transmission of the color image data stored in the storage unit,
A destination storage unit storing a destination to which transmission of a specific color portion of the received color image data is permitted;
Extracting means for extracting a specific color portion of the received color image data when the transmission destination of the received color image data is not stored in the transmission destination storage unit;
An image processing apparatus comprising: a transmission stopping unit that stops transmitting the specific color portion extracted by the extracting unit. An image processing apparatus that receives color image data, stores the color image data in a storage unit, and performs an output process including transmission of the color image data stored in the storage unit,
A destination storage unit storing a destination to which transmission of a specific color portion of the received color image data is permitted;
Extracting means for extracting a specific color portion of the received color image data;
An image processing apparatus comprising: a transmission stop unit that stops transmission of a specific color portion extracted by an extraction unit when a destination of the received color image data is not stored in the destination storage unit. The output processing includes transmitting image data,
19. The image processing apparatus according to claim 3, further comprising an encryption unit configured to encrypt a specific color portion of the image data to be transmitted.   20. The image processing apparatus according to claim 3, further comprising a transmission unit configured to transmit specific color information regarding a specific color. An information processing apparatus for transmitting image data to the image processing apparatus according to any one of claims 3 to 20,
A receiving means for receiving specific color information relating to the specific color;
A conversion unit configured to convert a predetermined color in the image data transmitted to the image processing device into the specific color. A computer program for causing a computer to transmit image data to the image processing apparatus according to any one of claims 3 to 20,
A procedure for causing the computer to receive specific color information regarding the specific color;
Causing the computer to convert a predetermined color in the image data to be transmitted to the image processing device to the specific color.   23. The computer program according to claim 22, further comprising a step of causing a computer to encrypt a specific color portion of the image data transmitted to the image processing apparatus. A computer program for causing a computer to transmit image data to the image processing apparatus according to any one of claims 3 to 20,
A procedure for causing the computer to receive specific color information regarding the specific color;
Causing the computer to convert the specific color portion in the image data to be transmitted to the image processing device into an erasure color. A computer program for causing a computer to transmit image data to the image processing apparatus according to any one of claims 3 to 20,
A procedure for causing the computer to receive specific color information regarding the specific color;
Causing the computer to convert the specific color in the image data to be transmitted to the image processing device into a non-specific color. A computer program for causing a computer to transmit image data to the image processing apparatus according to any one of claims 3 to 20,
A procedure for causing the computer to receive an output instruction or an output stop instruction for a specific color portion,
Causing the computer to transmit the accepted output instruction or output stop instruction to the image processing apparatus.

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