Print controlling apparatus, image forming apparatus, method of color revising and computer-readable recording medium

A print controlling apparatus includes a storage to store a plurality of color feature information, an acquirer to acquire color feature information of a second image forming apparatus, a moderator to moderate color converting table of a first image forming apparatus by using the acquired color feature information and the plurality of color feature information stored in the storage, and a controller to perform printing jobs regarding the first image forming apparatus by using the moderated color converting table.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority under 35 U.S.C. §119(a) from Korean Patent Application No. 10-2012-0145448, filed on Dec. 13, 2012 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present general inventive concept relates to a print controlling apparatus, an image forming apparatus, a method of color revising and computer-readable recording medium thereof, and more specifically, to a print controlling apparatus that can revise colors so as to have output features as desired by a user, an image forming apparatus, a method of revising colors and a computer-readable recording medium thereof.

2. Description of the Related Art

Generally, image forming apparatuses operate to print printing data generated at a print controlling apparatuses onto a recording medium. Examples of such image forming apparatuses include a copy machine, a printer, a scanner, a facsimile or a multi-function peripheral (MFP) that implements the above functions of copying, printing, scanning, and faxing within one complex apparatus.

Image forming apparatuses have their own color features implemented according to manufacturers' recommendations or to specific product models. Color features may be characteristics of toner or ink used by each manufacturer or may be policy related with color matching.

When a user exchanges a previously used image forming apparatus with a new image forming apparatus, he or she may be satisfied with the color features implemented in the new image forming apparatus. However, a user may want to keep color features of the previously used image forming apparatus while utilizing a new apparatus.

Therefore, conventional image forming apparatuses collect color information of the used image forming apparatus, and revise color matching (gamut mapping) of the new image forming apparatus using the collected color information.

However, conventional methods have difficulties in implementing satisfactory colors according to particular time points or particular situations. Specifically, toner features or ink features of new image forming apparatus to implement colors to be pursued as objective are different from those of the used image forming apparatus, and is the differences may be considerably large. Thus, there are differences in ranges and features of color implementation. Further, it may happen that writing files or printing files used to collect colors cannot reflect color features sufficiently. In view of the above facts, conventional methods of implementing color operation may cause degradation of color in a specific color area or a portion of a gamut boundary.

SUMMARY OF THE INVENTION

The present general inventive concept provides a print controlling apparatus, an image forming apparatus, a color revising method and a computer-readable recording medium, according to which color revising is operated by utilizing specific information of prestored color features so that a user can have output features as he/she wants.

The foregoing and/or other features and utilities of the present general inventive concept are achieved by providing a print controlling apparatus including a storage to store a plurality of color feature information, an acquirer to acquire color feature information of a second image forming apparatus, a moderator to moderate color converting table of the first image forming apparatus by using the acquired color feature information and the plurality of color feature information stored in the storage, and a controller to perform printing jobs regarding the first image forming apparatus by using the moderated color converting table.

plurality of stored color feature information are an International Color Consortium (ICC) profile or a color converting table regarding each of the first and second image forming apparatuses, which are different from one another.

The first and second image forming apparatuses have at least one difference in manufacturers, product class, and products.

The print controlling apparatus may additionally include a communicating interface to communicate with the second image forming apparatus and a scanner. The acquirer may control the communicating interface to print the prestored color charts in the second image forming apparatus, and acquires the color feature information of the second image forming apparatus by using the received scan image, if the scan image corresponding to scanned charts printed by the second image forming apparatus is received through the communicating interface.

The color charts may include a plurality of colors regarding each of achromatic colors, bright colors, skin colors, and color gamut boundary.

The moderator may select a stored color feature information from among the plurality of stored color feature information that is most similar to the acquired color feature information, and may moderate the color converting table regarding the first image forming apparatus by using the selected color feature information and the acquired color feature information.

The moderator may moderate the color converting table of the first image forming apparatus by combining color values of the selected color feature information and color values of the acquired color feature information regarding each of color ranges corresponding to a predetermined ratio.

The moderator may moderate the color converting table of the first image forming apparatus by using color values of the acquired color feature information regarding color ranges included in the acquired color feature information or by using color values of the selected color feature information regarding color ranges excluded in the acquired color feature information.

Meanwhile, the print controlling apparatus may additionally include a user interface to display a user interface window including a first area displaying a matching degree as compared to the acquired color feature information regarding each of the plurality of stored color feature information and a second area receiving selection on one of the plurality of stored color feature information. The moderator may moderate the color converting table of the first image forming apparatus by using the selected color feature information on the second area and the acquired color feature information.

The foregoing and/or other features and utilities of the present general inventive concept may also be achieved by providing an image forming apparatus may include a storage to store a plurality of color feature information and color converting table, a communicating interface to transmit color charts to a different image forming apparatus, a scanner to scan color charts printed by the different image forming apparatus, a moderator to moderate the color converting table by using the scanned color charts and the plurality of color feature information, and an image former to perform printing jobs by using the moderated color converting table.

The plurality of stored color feature information are an International Color Consortium (ICC) profile or a color converting table regarding each of the first and second image forming apparatuses, which are different from one another.

The foregoing and/or other features and utilities of the present general inventive concept may also be achieved by providing a color revising method includes acquiring color feature information of a second image forming apparatus, selecting one from a plurality of prestored color feature information by using the acquired color feature information, and moderating a color converting table of the first image forming apparatus by using the selected color feature information and the acquired color feature information.

The plurality of stored color feature information are an International Color Consortium (ICC) profile or a color converting table regarding each of the first and second image forming apparatuses, which are different from one another.

The first and second image forming apparatuses have at least one difference in manufacturers, product class, and products.

The color revising method may additionally include transmitting prestored color charts to the second image forming apparatus and receiving a scan image regarding scanned charts printed by the second image forming apparatus. The acquiring may acquire color feature information of the second image forming apparatus by using the received scan image.

The color charts may include a plurality of colors regarding each of achromatic colors, bright colors, skin colors, and color gamut boundary.

The moderating may moderate color converting table of the first image forming apparatus by combining color values of the selected color feature information and color values of the acquired color feature information regarding each of the plurality of color ranges on predetermined ratio.

The moderating may moderate a color converting table of the first image forming apparatus by using color values of the acquired color feature information regarding color ranges included in the acquired color feature information, or by using color values of the selected color feature information regarding color ranges excluded by the acquired color feature information.

Meanwhile, the selecting may include displaying a matching degree with the acquired color feature information regarding each of the plurality of prestored color feature information and receiving a selection on one of the plurality of prestored color feature information.

The foregoing and/or other features and utilities of the present general inventive concept may also be achieved by providing a non-transitory computer-readable recording medium including computer-readable codes to execute a color revising method of a first image forming apparatus is provided, in which the color revising method may include acquiring color feature information of a second image forming apparatus, selecting one from a plurality of prestored color feature information by using the acquired color feature information, and moderating a color converting table of the first image forming apparatus by using the selected color feature information and the acquired color feature information.

The foregoing and/or other features and utilities of the present general inventive concept may also be achieved by providing an image forming apparatus, including a moderator to compare a scanned image from a second image forming apparatus with a plurality of prestored images within the image forming apparatus to moderate a color converting table of the image forming apparatus based on the comparison, and a controller to control the image forming apparatus to perform a printing operation based on the moderated color converting table.

The moderator may select a prestored image from the plurality of prestored images that is most similar to the scanned image to combine color values of the selected prestored image and color values of the scanned image to perform the moderation of the color converting table of the image forming apparatus.

The moderator may perform the comparison by comparing color feature information of at least a portion of the scanned image with color feature information of at least a portion of each of the plurality of prestored images.

The color feature information may include at least one of an achromatic area, a bright area, skin colors, and a color gamut boundary.

The image forming apparatus may further include an acquirer to acquire color feature information corresponding to the scanned image by extracting color values corresponding to a color chart from the scanned image, wherein the moderator compares the acquired color feature information to color feature information corresponding to the prestored images in order to perform the moderation of the color converting table.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIG. 1is a block diagram illustrating an image forming system1000according to an exemplary embodiment of the present general inventive concept.

Referring toFIG. 1, the image forming system1000according to an exemplary embodiment of the present general inventive concept may include a print controlling apparatus100, a first image forming apparatus10, a second image forming apparatus20, and an image reading apparatus30.

The print controlling apparatus100receives a print command and generates printing data. Specifically, the print controlling apparatus100receives a print command corresponding to a document from a user, generates printing data corresponding to the document in response to the input print command, and transmits the generated printing data to the first and second image forming apparatuses10and20. A structure and operations of the print controlling apparatus100will be explained below by referring toFIGS. 2 and 3. The print controlling apparatus100may be a personal computer (PC), laptop computer, mobile phone, smart phone, portable media player (PMP), MP3 player, etc., but is not limited thereto.

The first and second image forming apparatuses10and20receive the printing data from the print controlling apparatus100, and print the received printing data. Specifically, the first and second image forming apparatuses10and20may receive printing data from the print controlling apparatus100, and may perform printing jobs regarding the received printing data. The first and second image forming apparatuses10and20may be copy machines, printers, facsimiles, or multi-function peripherals (MFPs) that may implement the above functions of copying, printing and faxing via a single apparatus.

In the following description, the first image forming apparatus10is an operating image forming apparatus that performs color revising, and the second image forming apparatus20is an objective image forming apparatus that may receive printing data corresponding to the revised colors from the first image forming apparatus10in order to implement the revised colors. Accordingly, the second image forming apparatus20may receive scan charts from the print controlling apparatus100in order to print the scan charts.

The image reading apparatus30scans a document and generates a scan image therefrom. Specifically, the image reading apparatus30may read scan charts printed by the second image forming apparatus20, generate scan image, and transmit the generated scan image to the print controlling apparatus100. The image reading apparatus30may be scanner, digital camera, spectrophotometer, etc., but is not limited thereto.

The exemplary embodiment of the present general inventive concept according toFIG. 1illustrates and describes that the image forming system1000includes the image reading apparatus30as a separate apparatus. However, if the first and second image forming apparatuses10and20are MFPs that can perform a scan function when implemented, the first and image forming apparatuses10and20may read scan charts printed by the second image forming apparatus20and may thereby generate a scan image.

Further, the above exemplary embodiment of the present general inventive concept according toFIG. 1illustrates and describes that the print controlling apparatus100directly connects to the first and second image forming apparatuses10and20, as well as the image reading apparatus30. However, the print controlling apparatus100may be implemented to indirectly connect to the first and second image forming apparatuses10and20and the image reading apparatus30via a network created by a router and a server. Further, when implemented, each of the above-described apparatuses may be connected to each other wirelessly.

FIG. 2is a schematic block diagram of a print controlling apparatus according to an exemplary embodiment of the present general inventive concept.

Referring toFIG. 2, a print controlling apparatus100may include a storage110, an acquirer120, a moderator130, and a controller140.

The storage110stores a plurality of color feature information or color feature values. Color feature information may include an International Color Consortium (ICC) profile or a color converting table. A plurality of color feature information prestored in the storage110may include an ICC profile or the color converting table, which are previously created by manufacturers of various image forming apparatuses on the market, specifically various image forming apparatuses having different manufacturers, product classes, or products.

An ICC profile is a set of data that characterizes a color input or output device, or a color space, according to standards promulgated by the International Color Consortium (ICC). As such, characteristic colors of an original image may be implemented on color input and output devices regardless of color implementing features in the color input and output devices, and various image converting operations may be applied thereto. The ICC profile may correspond to a digital file that defines a relationship between a device-dependent color space and a device-independent color space in a format of mathematical modeling or a look-up table.

The device-dependent color space is a color coordinate that expresses values of digital controlling signals in specific bit number, such as 8 bits or 10 bits, to define colors that are usable by color input and output devices. RGB, CMY and CMYK color spaces are typically used according to a method implementing colors of output devices and a number of primary colors. However, because the device-dependent color space expresses only colors of color input and output devices with combinations of digital controlling signal values, natural colors as originally seen in nature cannot be reproduced. Further, on the device-dependent color space, when an image having uniform values of color coordinates is output in another color output device having different features of color implementing, output image colors are shown differently, having different hues and intensities, for example.

The device-independent color space is a color dimensional coordinate that quantifies and expresses color stimulus values that a human eye may perceive, and can reflect uniform color values regardless of color implementing features in color output devices. Representatively, color coordinates such as sRGB, CIEXYZ, or CIELab are used.

The storage110stores an image corresponding to color charts. Color charts are charts including a plurality of colors regarding each of achromatic colors, bright colors, skin colors, and color gamut boundary. An example of color charts is illustrated inFIG. 4. Although the exemplary embodiment of the present general inventive concept describes that color charts ofFIG. 4are used, other types of color charts known to one of ordinary skill in the art may be used.

The storage110may be a storage medium within the print controlling apparatus100or external storing medium, such as a hard drive, a removable disk including USB memory, or a web server through network.

The acquirer120acquires color feature information of the second image forming apparatus20. Specifically, the acquirer20may directly acquire an ICC profile or a color converting table of the second image forming apparatus20. Further, the acquirer120may operate so that the color charts are printed by the second image forming apparatus20, receive the scan image of the color charts printed by the second image forming apparatus20, and acquire the color feature information of the second image forming apparatus20by utilizing the received scan image.

If color feature information is acquired by utilizing a scan image, the acquirer120may extract color values included in color charts from the scanned color charts, and generate RGB three-dimensional color matrix of the scanned color charts by using the extracted color values. As such, the acquirer120may generate RGB three-dimensional color matrix from the extracted color values by using regression technology. Regression technology is technology that infers undefined RGB color space by utilizing a plurality of color values. Since regression technology is well-known to one of ordinary skill in the art, detailed explanation thereof is not included herein.

The acquirer120may generate an RGB three-dimensional color matrix regarding color feature information stored in the storage110.

The moderator130stores a color converting table of the first image forming apparatus10. The color converting table is look-up table indicating converting values that can convert colors within an RGB color space to colors within a CMYK color space so as to implement colors within the RGB color space within printing data in an image forming apparatus that uses the CMYK color space. While the exemplary embodiment of the present general inventive concept only describes that color converting table to convert RGB color space to CMYK color space is used, a color converting table to convert color spaces other than the RGB color space to the CMYK color space may also be used. The color converting table of the second image forming apparatus20in the storage110may be renewed by the moderator130, which will be explained below. Although the exemplary embodiment of the present general inventive concept describes that the color converting table is stored in the moderator130, the color converting table may also be stored in the storage110.

The moderator130moderates the color converting table corresponding to the first image forming apparatus10by using the acquired color feature information and a plurality of color feature information stored in the storage110. Specifically, the moderator130may select prestored color feature information that is most similar to the acquired color feature information from the plurality of prestored color feature information. Accordingly, the moderator130may compare each RGB three-dimensional color matrix of the plurality of prestored color feature information with an RBG three-dimensional color matrix of the acquired color feature information, and calculate similarities between the acquired color feature information regarding each of the plurality of prestored color feature information. The moderator130may select prestored color feature information having the highest similarity based on the calculated similarity. During implementation, a display matching degree (i.e., a similarity) with the acquired color feature information regarding each of the plurality of prestored color feature information may be displayed on a user interface window, and a user may select one of the plurality of color feature information.

The moderator130may convert the color converting table corresponding to the first image forming apparatus10by using the selected color feature information. Specifically, the moderator130may convert the color converting table corresponding to the first image forming apparatus10by using the selected color feature information and/or the acquired color feature information using the above various methods.

First, the moderator130may substitute the color converting table of the selected color feature information with the color converting table of the previous first image forming apparatus10. Specifically, the moderator130may compare the RGB three-dimensional color matrix of the selected color feature information with the RGB three-dimensional color matrix of the color converting table corresponding to the first image forming apparatus10by using 3D-interpolation, and may redefine the RGB color mapping features of the first image forming apparatus10based on the comparison results so that RGB color values of color converting table corresponding to the first image forming apparatus10have color values of the selected color feature information. The moderator130may renew the color converting table of the first image forming apparatus10by using the redefined RGB color mapping features.

Further, the moderator130may moderate the color converting table of the first image forming apparatus10by combining color values of the selected prestored color feature information and the color values of the acquired color feature information corresponding to each of a plurality of color ranges at a predetermined ratio. Specifically, the moderator130may combine the RGB three-dimensional color matrix of the selected color feature information and the RGB three-dimensional color matrix of the acquired color feature information at a predetermined ratio, specifically, corresponding to a default value or corresponding to a user selected value, compare the combined three-dimensional color matrix with the RGB three-dimensional color converting table of the color converting table corresponding to the first image forming apparatus10, and redefine the RGB color mapping features of the first image forming apparatus10so that RGB color values of the color converting table regarding the first image forming apparatus10have color values of the combined RGB three-dimensional color matrix based on the comparison results. The moderator130may renew the color converting table of the first image forming apparatus10by using the redefined color mapping features.

Further, the moderator130may convert the color converting table of the first image forming apparatus10by using color values of the acquired color feature information regarding a color range included in the acquired color feature information or by using color values of the selected color feature information regarding a color range excluded in the acquired color feature information. Specifically, the moderator130may generate the RGB three-dimensional color matrix by combining color values of the selected color feature information with the acquired color feature information corresponding to the user input ratio or the user setting, compare the generated RGB three-dimensional color matrix with the RGB three-dimensional color converting table of the color converting table corresponding to the first image forming apparatus10, redefine the RGB color mapping features of the first image forming apparatus10so that RGB color values of the color converting table corresponding to the first image forming apparatus10have color values of the generated RGB three-dimensional color matrix based on the comparison results, and renew the color converting table of the first image forming apparatus10by using the redefined RGB color mapping features.

Although the exemplary embodiment of the present general inventive concept describes that the acquirer120and the moderator130are separate units, the acquirer120and the moderator130may be formed within a single unit.

The controller140controls each unit within the print controlling apparatus100. Specifically, if a command to moderate color features is input by a user, the controller140controls printing color charts in the second image forming apparatus20. If the scan image of the printed color charts is received from the second image forming apparatus20, the controller140controls the acquirer120to acquire color feature information of the second image forming apparatus20by using the received scan image, and controls the moderator130to moderate the color converting table corresponding to the first image forming apparatus10by using the acquired color feature information and the prestored color feature information.

Further, the controller140may perform printing jobs by utilizing the moderated color converting table.

The foregoing illustrates and describes basic components of the print controlling apparatus100. However, the print controlling apparatus100may include components other than those described above. A detailed description of the print controlling apparatus100will be explained below by referring toFIG. 3.

FIG. 3is a detailed block diagram of a print controlling apparatus according to an exemplary embodiment of the present general inventive concept.

Referring toFIG. 3, a print controlling apparatus100according to an exemplary embodiment of the present general inventive concept may include a storage110, an acquirer120, a moderator130, a controller140, a communicating interface150, a user interface160, and a printer driver170.

Because operations of the storage110, the acquirer120and the moderator130can be uniformly explained as in described by referring toFIG. 2, overlapping explanations will not be included herein.

The communicating interface150is connected to the first and second image forming apparatuses10and20and transmits printing data to the first and second image forming apparatuses10and20. Specifically, the communicating interface150is formed to connect the print controlling apparatus100with external devices. Installation may be implemented by connecting to the first and second image forming apparatuses10and20through a universal serial bus (USB) port as well as a local area network and Internet network.

The communicating interface150may transmit image corresponding to color charts (or printing data corresponding to color charts) to the second image forming apparatus20. Although the exemplary embodiment of the present general inventive concept only describes that color charts are transmitted to the second image forming apparatus20through the communicating interface150, an image corresponding to the color charts may be delivered by utilizing a portable-type storing medium (e.g., USB storing medium, external hard drive, etc.).

The communicating interface150receives a scan image from the image reading apparatus30. Specifically, the communicating interface150may receive the scan image corresponding to the color charts printed by the second image forming apparatus20from the image reading apparatus30. If the first image forming apparatus10and the second image forming apparatus20are MFPs that can perform a scan function when implemented, a scan image corresponding to the printed color charts may be received from the first image forming apparatus10or the second image forming apparatus20.

The communicating interface150may transmit printing data generated in a driver170, which will be explained below, to the first and second image forming apparatuses10and20.

The user interface (UI)160includes a plurality of function keys that a user may predefine, or the user may select various types of functions supported by the print controlling apparatus100. The UI160also displays various types of information provided from the print controlling apparatus100. The user interface160may be implemented as a device that simultaneously performs input and output functions, such as touch screen, or may alternatively be a device combined with a mouse and a monitor. A user may input a command to moderate color features via a user interface window provided by the user interface160so as to acquire an output from the second image forming apparatus20.

The printer driver170supports an interface between the print controlling apparatus100and the first and second image forming apparatuses10and20, and converts data that a user tries to print into printing data, using a language format that the first and second image forming apparatuses10and20understand.

The printer driver170may generate printing data by using the renewed color converting table.

The controller140controls each unit within the print controlling apparatus100. Specifically, if a command to moderate color features is input through the user interface160, the controller140controls the printer driver170to print color charts in the second image forming apparatus20. If the scan image of the color charts printed by the second image forming apparatus20is received through the communicating interface150, the controller140controls the acquirer120to acquire color feature information of the second image forming apparatus20by using the received scan image, and controls the moderator130to moderate the color converting table of the first image forming apparatus10by using the acquired color feature information and the prestored color feature information.

As described above, the print controlling apparatus100according toFIG. 3uses prestored color feature information while implementing color features of another image forming apparatus. Thus, data may be output in colors that are more accurate.

FIG. 4illustrates an example of color charts according to an exemplary embodiment of the present general inventive concept.

Referring toFIG. 4, color charts400include a first area410indicating achromatic colors, a second area420indicating bright colors, a third area430indicating skin colors, a fourth area440indicating a color gamut boundary and a fifth area450indicating extra colors.

In the exemplary embodiment of the present general inventive concept, color feature information to be acquired from the second image forming apparatus20is provided to view color features within a main color implementing range, rather than to view overall color features of the second image forming apparatus20. As such, an objective of acquiring color feature information from the second image forming apparatus20is to acquire necessary information to substantiate differences between color features of an achromatic area, a bright area, skin colors, and a color gamut boundary, which have large differences in color features of image forming apparatuses. Therefore, the color charts according to an exemplary embodiment of the present general inventive concept include color values regarding areas having large differences in color features.

FIGS. 5 and 6illustrate various examples of a user interface window that can be displayed on a user interface.

Referring toFIG. 5, user interface window500includes a first area510, a second area520, an apply area530, and a cancel area540.

The first area510is area that displays an image with reference to matching degrees of acquired color feature information corresponding to each of a plurality of stored color feature information. Specifically, the first area510is area that displays an image with regard to the colors moderated by the moderator130, as described above.

The second area520is area where one of a plurality of color feature information may selected by a user. The color feature information may be represented by radio buttons denoting a particular color percentage.

The apply area530is area where a command to perform color revising may be input by using the color feature information selected in the second area520.

The cancel area540is area where a user command to cancel an operation of color revising may be input.

FIG. 5illustrates an example in which a predetermined percentage corresponding to color feature information to be applied is selected through a user interface window. However, a user may select combination degrees between the selected color feature information and the acquired color feature information via a different type of user interface window, as illustrated inFIG. 6.

Referring toFIG. 6, a user interface window600includes a print output area605, a scan area610, a compare area615, a similarity display area620, a similarity result area630, an adjust area640, a preview area650, a color difference display area660and an apply area670.

The print output area605is an area where a command to output color charts via the second image forming apparatus20is input. If the print output area605is selected, the print controlling apparatus100may transmit a prestored color chart image (or color chart printing data) to the second image forming apparatus20.

The scan area610is an area where a command to scan the printed color charts is input. If the scan area610is selected, the print controlling apparatus100may control the image reading apparatus30so that the color charts printed by the second image forming apparatus20can be scanned.

The compare area615is an area where a command is received to perform a calculation of a similarity of the plurality of prestored color feature information and color feature information acquired from the scan image by using the scanned color charts. If the compare area615is selected, the print controlling apparatus100may determine similarity between each of the plurality of prestored color feature information and the acquired colors, and display determining results on the similarity display area620and the similarity result area630of the user interface window600.

The similarity display area620is an area where a similarity between each of the plurality of prestored color feature information and the acquired color feature information is displayed. The similarities may be represented by a percentage denoting an amount of similarity between the each of the plurality of prestored color feature information and the acquired color feature information. For example,FIG. 6illustrates that a Color B of the prestored color feature information has a 95% similarity to the acquired color feature information, while color A of the prestored color feature information has a 55% similarity to the acquired color feature. As such, the Color B of the prestored color feature information has a closer similarity to the acquired color feature information than the Color A.

The similarity result area630is an area where prestored color feature information having the highest (i.e., closest) similarity is displayed according to similarity results. As illustrated inFIG. 6, the Color B of the prestored color feature information has a closest similarity to the acquired color feature information.

The adjust area640is an area where a ratio of combining the selected color feature information and the acquired color feature information may be selected. The adjust area640may be implemented in a slide bar format as illustrated inFIG. 6, or in a format which directly receives a combination ratio as input by a user.

The preview area650is an area where a preview image corresponding to the color converting table generated according to the combination ratio selected in the adjust area640is displayed.

The color difference display area660is an area where a difference between color feature information acquired according to the combination ratio selected in the adjust area640and the color feature information according to the combination results is displayed.

The adjust area670is an area where a command to perform color revising according to the combination ratio selected in the adjust area640may be input.

The above describes that color converting table of the first image forming apparatus10may be stored and moderated in the print controlling apparatus100, However, if the color converting table is stored in the image forming apparatus10, the print controlling apparatus100may renew the color converting table and transmit the renewed color converting table to the first image forming apparatus10. Further, the first image forming apparatus10can renew color converting table within itself. Such an exemplary embodiment of the present general inventive concept will be explained below by referring toFIG. 7.

FIG. 7is a block diagram of an image forming apparatus200according to an exemplary embodiment of the present general inventive concept.

The image forming apparatus200includes a communicating interface210, a user interface220, a storage230, a scanner240, an acquirer250, a moderator260, an image former270and a controller280.

The communicating interface210connects to the print controlling apparatus100and receives printing data from the print controlling apparatus100. Specifically, the communicating interface210is formed to connect to the print controlling apparatus100with external devices. Connecting to the print controlling apparatus100can be performed through USB port as well as LAN or Internet network. The print controlling apparatus100connected to the image forming apparatus200may be the print controlling apparatus100illustrated inFIGS. 2 and 3, or general print controlling apparatus100that does not include functions ofFIGS. 2 and 3.

The communicating interface210may transmit an image corresponding to color charts to the print controlling apparatus100or to the second image forming apparatus20. Color charts are charts including a plurality of colors regarding each of a plurality of achromatic colors, bright colors, skin colors, and a color gamut boundary. An example of color charts is illustrated inFIG. 4. Although the exemplary embodiment of the present general inventive concept only describes that color charts ofFIG. 4are used, the above-described color charts may be combined with color charts known to one of ordinary skill in the art.

Although the exemplary embodiment of the present general inventive concept describes the transmitting to the print controlling apparatus100or the second image forming apparatus20through the communicating interface210, a carrying-type storing medium such as USB storing medium may be used to transmit the image corresponding to the color charts.

The user interface220includes a plurality of function keys that a user can establish or select various types of functions supported by the image forming apparatus200, and displays various types of information provided by the image forming apparatus200. The user interface220may be implemented as a device that simultaneously performs an input and output, such as touch screen, or may be a device combining a mouse and a monitor. A user may input a command to begin color revising of the image forming apparatus200via a user interface window provided by the user interface220.

The storage230stores printing data. Specifically, the storage230may store printing data received from the above communicating interface210. The storage230may be implemented as an external storing medium, such as a removable disk including USB memory, an external hard drive, and web server through a network, as well as an internal storing medium within the image forming apparatus200.

The storage230stores a plurality of color feature information. The color feature information may include an ICC profile or a color converting table and a plurality of color feature information prestored in the storage230may be an ICC profile or a color converting table that are previously created by manufacturers of various image forming apparatuses on the market, specifically various image forming apparatuses having different manufacturers, product classes, or products.

The storage230stores the color converting table. The color converting table is a look-up table indicating converting values that can convert colors within an RGB color space to colors on a CMYK color space, so as to implement colors within the RGB color space within printing data in an image forming apparatus that uses the CMYK color space. Such a color converting table may be renewed by the moderator260, which will be described below. The exemplary embodiment of the present general inventive concept only describes that the color converting table to convert the RGB color space to the CMYK color space is used. However, the color converting table may be used to convert other color spaces besides the RGB color space to CMYK color space.

The storage230stores an image corresponding to color charts.

The scanner240includes a lens forming lights reflecting from a document to an image on an internal image sensor, and reads image information of the document from the lights formed on the image sensor. The scanner240scans the color charts printed by the second image forming apparatus20, and provides the scanned color charts to the acquirer250. As such, the scanner240may provide the image corresponding to the scanned color charts to the acquirer250, or extract only color values included in the scanned color charts, and provide the color values to the acquirer250. Meanwhile, the scanner240may be mounted on a flatbed scanner system or within a Duplex Automatic Document Feeder (DADF).

The scanner240may convert at least one of color space, number, and color arrangement of the scanned color charts. Specifically, if the color charts scanned by the scanner240are not charts illustrated inFIG. 4, the scanner240may convert the scanned color charts to be suitable to provide a color arrangement of the charts illustrated inFIG. 4, while keeping color values of the scanned color charts. The scanner240may provide the converted color charts to the acquirer250.

Although the exemplary embodiment of the present general inventive concept only describes that color charts are directly scanned and used by the scanner240mounted within the image forming apparatus200, color charts may be scanned through external scan devices and the color charts scanned by external scan devices may be received by using the communicating interface210.

The acquirer250acquires color feature information of the second image forming apparatus20. Specifically, the acquirer250may directly acquire ICC profile or color converting table of the second image forming apparatus20. Further, the acquirer250may operate so that color charts are printed by the second image forming apparatus20, receive the scan image of the color charts printed by the second image forming apparatus20, and acquire the color feature information of the second image forming apparatus20by using the received scan image.

If the color feature information is acquired by using the scan image, the acquirer250may extract color values included in the color charts from the scanned color charts, and generate an RGB three-dimensional color matrix of the scanned color charts by using the extracted color values. The acquirer250may generate the RGB three-dimensional color matrix from the extracted color values by using regression technology.

The acquirer250may generate RGB three-dimensional color matrix regarding color feature information stored in the storage230.

The moderator260converts a color converting table regarding the image forming apparatus200by using the acquired color feature information and the plurality of color feature information stored in the storage230. Specifically, the moderator260may select prestored color feature information among the plurality of prestored color feature information compared that is most similar to the acquired color feature information. More specifically, the moderator260may compare each of the RGB three-dimensional color matrices regarding the plurality of prestored image forming apparatus with the RGB three-dimensional color matrix of the acquired color feature information, and calculate similarities between the acquired color feature information with respect to each of the plurality of prestored color feature information.

The moderator260may select prestored color feature information having the highest similarity based on the calculated similarity. Furthermore, matching degrees (i.e., similarities) between the acquired color feature information with respect to each of the plurality of color feature information may be displayed on the user interface window, such that one of the plurality of color feature information may be selected from a user.

The moderator260may convert the color converting table by using the selected color feature information. Specifically, the moderator260may convert the color feature table by using the selected color feature information and/or the acquired color feature information with various methods as described above.

The moderator260may substitute the color converting table of the selected color feature information with color converting table regarding the previous image forming apparatus200. The moderator260may also convert the color converting table of the image forming apparatus200by combining color values of the selected color feature information and color values of the acquired color feature information regarding each of a plurality of color ranges with respect to a predetermined ratio. Further, the moderator260may convert the color converting table of the image forming apparatus200by using color values of the acquired color feature information regarding color range included in the acquired color feature information or color values of the selected color feature information regarding color ranges excluded in the acquired color feature information.

Although the exemplary embodiment of the present general inventive concept describes that the acquirer250and the moderator260are separate components, a single device including the acquirer250and the moderator260may be implemented.

The image former270prints printing data. Specifically, the image former270may print printing data received through the communicating interface210by using the renewed color converting table.

The controller280controls each component within the image forming apparatus200. Specifically, if the user interface220receives a command to moderate color features from a user, the controller280may control the communicating interface210to print color charts in the second image forming apparatus20, and control the scanner240to scan the color charts printed by the second image forming apparatus20.

The controller280may control the acquirer250to acquire color feature information of the second image forming apparatus20by using the received scan image, and control the moderator260to moderate the color converting table by using the acquired color feature information and prestored color feature information.

The controller280may control the image former270to perform printing jobs by using the moderated color converting table.

As described above, the image forming apparatus200according to an exemplary embodiment of the present general inventive concept uses prestored color feature information while implementing color features of another image forming apparatus, and thus, implements colors that are more accurate.

FIG. 8is a flowchart briefly explaining a color revising method according to an exemplary embodiment of the present general inventive concept.

Color feature information of the second image forming apparatus20is acquired at S810. Specifically, an ICC profile or a color converting table of the second image forming apparatus20may be directly acquired, or, color charts may be printed by the image forming apparatus20, a scan image of the color charts printed by the second image forming apparatus20may be received, and color feature information of the second image forming apparatus20may be acquired by using the received scan image.

One prestored color feature information is selected from a plurality of prestored color feature information by using the acquired color feature information, and a color converting table regarding the first image forming apparatus is moderated by using the selected color feature information and the acquired color feature information at S820. A detailed operation of moderating the color converting table will be explained below by referring toFIG. 9.

Printing is performed by using the moderated color converting table at S830.

Therefore, the color revising method according to an exemplary embodiment of the present general inventive concept uses prestored color feature information while implementing color features of another image forming apparatus, and thus, implements colors that are more accurate. The color revising method ofFIG. 8may be implemented in a print controlling apparatus as illustrated inFIG. 2orFIG. 3, an image forming apparatus as illustrated inFIG. 7, or a print controlling apparatus or an image forming apparatus having other embodiments not limited hereto.

FIG. 9is a flowchart specifically explaining a color revising method according to an exemplary embodiment of the present general inventive concept.

The second image forming apparatus20previously stores image of color charts to acquire color information at S905.

The prestored color charts are printed by the second image forming apparatus20at S910. Specifically, image corresponding to the prestored color charts (or printing data) is transmitted to the second image forming apparatus20.

At S915, color charts printed by the second image forming apparatus20are scanned. The scanning of color charts may be performed in the separate image reading apparatus30, the first image forming apparatus10including a scan function, or the second image forming apparatus20.

At S920, the scan image is received.

By using the received scan image, color values of color charts are extracted at S925, and color feature information of the second image forming apparatus20is acquired based on the extracted color values at S930.

At S940, color feature information to be applied is selected among the color feature information prestored at S935regarding different image forming apparatuses. Such selecting may be performed automatically according to color similarity or by a user.

At S945, option values of the selected color feature information and the acquired color feature information are selected. Specifically, a combination ratio may be selected via the slide bar within the adjust area640, as illustrated inFIG. 6.

Color combination is performed based on the selected color feature information, the acquired color feature information and the selected option values at S955. An RGB three-dimensional color matrix to be applied in the first image forming apparatus10is generated. Detailed operation of the color combination will be explained below by referring toFIG. 10.

The color feature information at S960of the first image forming apparatus10and the previously generated RGB three-dimensional color matrix are device-linked at S965, and the color converting table regarding the first image forming apparatus10is generated at S970.

At S975, the previous color converting table is renewed by using the generated color converting table.

Therefore, the color revising method according to an exemplary embodiment of the present general inventive concept uses prestored color feature information while implementing color features of another image forming apparatus, and thus, implements colors that are more accurate.

FIG. 10is a flowchart specifically explaining the color combining operation ofFIG. 9.

Specifically, the color combining operation is an operation to combine color features of an image forming apparatus to be pursued as objective and selected color features before producing color features to be applied in the first image forming apparatus10, so as to implement colors that a user wants.

Color features of an image forming apparatus to be pursued as objective basically show color features that a user wants to implement, and selected color features show representative color features of a manufacturer (e.g., a manufacturer of the second image forming apparatus20) regarding color features that a user wants to implement. Thus, such a combination contributes to an enhanced performance of implementing colors that a user wants.

Selected color features are produced by considering color policies of manufacturers, which supplements parts that cannot be considered or may be insufficient in color features as objective.

Color combination is not a simple combination of color features versus color features. Based on color features as objective, selected color features are compared with color features as objective, and an area having large differences in color and an area having small differences in color are divided. Thus, a user can adjust a degree of color combination. This is to supplement color features of the second image forming apparatus20by utilizing prestored color features. By supplementing color features, color features or policies of manufacturers or product classes that prestored color features include therein, may be reflected.

Therefore, color features selected by a user at S1010are divided per color range at S1020, and color features as objective at S1030are divided per color range at S1040.

Each of the color features divided per range are compared at S1050, and according to a combination condition in each color range selected by a user at S1060, the color combination is performed at S1070. Adjusted objective color features are acquired at S1080.