JPH1169173A - Document generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a document generator where the color of an image on a display screen to adjust coloring of an image is made identical to the color of the image that is separated into two specific colors and outputted in the case of generating a color image in two specific colors. SOLUTION: The generator is provided with a specific color cross reference table storage section 10 that receives data from an input device 4 and stores a specific color cross reference table that corresponds color image data and a basic configuration color of the color image to two specific colors, a document data storage section 9 that stores the image data, and a CPU 1 that reads the image data stored in the document data storage section 9, adds specific color cross reference table information to the image data, converts the data into output data and outputs the converted output data to an output device (display device 6, color printer 7 and image setter 8).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document creating apparatus for creating a color image by overprinting two special color inks.

[0002]

2. Description of the Related Art Conventionally, when a color image is created using two special color inks in a document creating apparatus, a color image created on a CRT display screen is converted into four process colors as shown in FIG. (CMYK), two of the four editions of cyan C, magenta M, yellow Y, and black K obtained as the two special colors are separated and output.
The color separation result is colored with each special color ink and overprinted to create a two-color image.

[0003]

In such a document creating apparatus, the display colors of the CRT screen and the printing colors of the color printer are temporarily set to four process colors (CMY).
K) is a combined color, and thus has the disadvantage that the color differs from the actual printed matter. For this reason, there is a problem that color separation cannot be confirmed unless color separation is performed, colored with two special color inks, and printed in two colors.

According to the present invention, when a color image is formed using two special colors, the color of the image on the display screen for adjusting the color tone of the image is the same as the color of the image separated into two special colors and separated and output. It is an object to provide a document creation device.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides an input means for inputting data, and color image data and basic constituent colors of a color image which correspond to two special colors. A special color correspondence table to be stored, image data storage means for storing image data input by the input means, and image data stored in the image data storage means, and convert to output data by adding the special color correspondence table information An output data generating means and an output means for outputting the output data obtained by the output data generating means to an output device are provided.

[0006] Thus, when a color image is formed with two special colors, a document creating apparatus is obtained in which the two-color image printed with the two special colors has the same hue as the image displayed on the display screen.

[0007]

According to the first aspect of the present invention, an input means for inputting data, and the basic constituent colors of the color image data and the color image input from the input means are made to correspond to two special colors. Special color correspondence table, image data storage means for storing the image data input by the input means, and image data stored in the image data storage means, and output for adding the special color correspondence table information and converting it to output data When a color image with two special colors is created, a two-color printed image with two special colors is provided by having a configuration including data creating means and output means for outputting output data obtained by the output data creating means to an output device. Has the same color as the image displayed on the display screen.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

First, a document to be displayed and printed is generally composed of data such as ruled lines, characters, figures, and images as shown in FIG.

When such a document is displayed and printed in special color two-color printing, ruled lines, characters, and graphic data are shown in FIG.
As shown in (1), display and printing in a mixed color of two colors can be realized relatively easily.

To explain this, first, for each data, a mixing ratio of the special color 1 and the special color 2 is set as a color attribute. A CRT display color or a color printer output color is obtained using the display color definitions of the special colors 1 and 2 and the color attributes of the document data, and each data is displayed and printed in that color. Also, the special color 1 of the color attributes of the document data
Using the components, a separated color special plate 1 is obtained, and using the two special color components, a separated special color plate 2 is obtained. However, for image data, color attributes (CMY
K) has already been determined, and it is not easy to newly set the mixing ratio of the special color 1 and the special color 2 as the color attribute, and the same processing as the ruled line, character, and graphic data cannot be performed.

FIG. 1 is a hardware block diagram of a document creating apparatus according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a CPU (central processing unit) for controlling the entire apparatus and various data processing, 2 a RAM (random access memory) for storing various data, and 3 a control program executed by the CPU 1. Besides,
ROM (read only memory) for storing various programs, 4 is an input device such as a keyboard and a mouse,
Reference numeral 5 denotes a color scanner which reads an image of a document for each of R (red), G (green), and B (blue) components, converts the read image into data of four colors of CMYK and outputs the data, and 6 denotes a display device such as a CRT or liquid crystal. . Reference numeral 7 denotes a color printer using an electrophotographic method or an ink jet method, which includes C (cyan), M
Color output is performed using a combination of four colors (magenta), Y (yellow), and K (black). Reference numeral 8 denotes an image setter for recording a document image on a film for making a plate by a laser, and when performing full color printing,
For one document, a total of four plates corresponding to each color plate for printing are output.

The RAM 2 is provided with a document data storage section 9 for storing document data and a spot color correspondence table storage section 10 for storing a spot color correspondence table.

As shown in FIG. 11, the document data stored in the document data storage section 9 includes a document name, format information, character data, graphic data, ruled line data, image data, and the like. The character data is a character code string input from the input device 4, and the graphic data and the ruled line data are
It consists of information such as the type of figure, the position and size of the figure / ruled line. The character data, figure data, and ruled line data are output in colors based on the character color information, figure color information, and ruled line color information in the format information.

Each of these color information is, as shown in FIG.
There are six types of items, CMYK, and special color 1 and special color 2, and these items are set to values of 0 to 100% by the input device 4, respectively.

The image data is read from the color scanner 5, and each pixel has four CMYK color components as shown in FIG.

As shown in FIG. 3, the spot color correspondence table stored in the spot color correspondence table storage unit 10 is a spot color name for identifying each spot color, and the ratio of each color component when the spot color is represented by CMYK components. , And when the image data is output as a special color, the color component (C
Or M, Y, or K). The relationship between the special color name and the CMYK component ratio is set by using data published by a manufacturer handling the special color ink.

The contents of the above-described spot color correspondence table are shown in FIG.
Is set by the setting screen shown in FIG.

FIG. 2 is a functional block diagram of the document creating apparatus according to one embodiment of the present invention. In FIG. 2, reference numeral 11 denotes display data for image data in the document data stored in the document data storage unit 9 based on the spot color correspondence table stored in the spot color correspondence table storage unit 10. And a display control unit 12 for displaying the image data in the document data stored in the document data storage unit 9 based on the spot color correspondence table stored in the spot color correspondence table storage unit 10. And a color output control unit 13 for creating color printer output data and displaying the data on the color printer 7. The image data in the document data stored in the document data storage unit 9 is stored in the special color correspondence table storage unit 10. Is a color separation output control unit that generates color separation output data based on the special color correspondence table stored in the image storage unit and outputs the data to the image setter 8.

The processing in the case where full-color output and the case where two-color spot color is output in the document creating apparatus of the present embodiment configured as described above will be described with reference to FIGS.

First, as shown in FIG. 7, in the case of full-color output, color information of document data is represented by four components of CMYK. Characters, graphics, and ruled lines of the document data are input from the input device 4, and each color is designated by four components of CMYK.

The image portion is input from the color scanner 5, and the color scanner 5 reads the image of the original with three components of RGB, converts it into CMYK data, and outputs it. Therefore, the image portion in the document data is stored as CMYK data.

When displaying such document data, the data defined by CMYK is converted into RGB data that can be displayed on the display device 6. When outputting to the color printer 7, data of four CMYK components in the document data is used. When the image is output by the imagesetter 8, the C, M, and C colors are used according to the CMYK data.
Four plates, that is, a plate, a Y plate, and a K plate, are output, and a printing process is performed using the four plates.

Next, as shown in FIG. 10, in the case of outputting a two-color spot color, the color designation from the input device 4 is performed for two components of the spot color 1 and the spot color 2. However, the image data input from the color scanner 5 is four components of CMYK. Therefore, when the document data is to be displayed on the display device 6, first, the CMYK data is obtained from the color information of the characters, graphics, and ruled lines represented by the special colors 1 and 2 using the special color correspondence table.
Is generated, and is converted into RGB data for display. In the image portion, first, according to the special color correspondence table, the ratio of any two CMYK components is applied as the component ratio of the special colors 1 and 2 (specified by the user and set in the special color correspondence table. In this case, it is assumed that the data of C is applied to the special color 1 and the data of M is applied to the special color 2), and then the four components of CMYK are generated and displayed in the same manner as the character / graphic / ruled line portion. Convert to data for

In the case of output to the color printer 7, CMYK data is generated in the same manner as in the case of the display device 6, and color output is performed based on the CMYK data. In the case of output to the image setter 8, the character portion is data of the special color 1 and the special color 2, and the image portion is any one of the CMYK components of any two colors set in the special color correspondence table, The data applied to the special color 2 is used, and as a result, the output of the special color 1 and the special color 2 is obtained on the film.

The operation of the above document creation apparatus will be described below with reference to the flowcharts of FIGS.

Here, it is assumed that data as shown in FIG. 3 is set in the spot color correspondence table. That is, the special color 1 is a special color name “blue”, and its component configuration is C component: C1%, M component: M1%, Y component: Y1%, K
Component: K1%, and C component data is used in the image portion. The special color 2 is called “red”, and its component composition is C component: C2%, M component: M2%, Y component: Y
2%, K component: K2%, and M component data is used in the image portion.

Under the setting of the special color, the input data from the input device 4 includes the special color 1 (t1%) and the special color 2 (t2).
%), Character data, figure data, and ruled line data are set, and (C, M, Y, K) = (ci%, mi%, yi%, ki) for each pixel from the color scanner 5.
%), (Where i = 1, 2, 3,..., Ci, m
Image data having a value of (i, yi, ki is data corresponding to the i-th pixel) is input.

Processing for displaying a document on the display device 6 and outputting to the color printer 7 based on such document data will be described with reference to the flowchart of FIG.

As shown in FIG. 5, first, it is determined whether the output destination is the display device 6 or the color printer 7 (S1). When displaying on the display device 6, character data, graphic data,
After generating the display data of the ruled line data (S2), the display data of the image data is generated (S7). When outputting to the color printer 7, character data, graphic data,
After generating the printer output data of the ruled line data (S1
3) Generate printer output data of the image data (S)
18).

The process of S2 is constituted by repetition of S3 to S6. First, in S3 and S4, character data (or graphics /
Color information (ruled line data) (special color 1: t1%, special color 2: t2)
%) And the special color 1 display component and the special color 2 display component in the character data (or figure / ruled line data) based on the special color correspondence table. Specifically, the following equation is used.

Display component of spot color 1: (c1, m1, y1,
k1) = (C1 × t1 / 100, M1 × t1 / 100,
Y1 × t1 / 100, K1 × t1 / 100) Display component of special color 2: (c2, m2, y2, k2) = (C
2 × t2 / 100, M2 × t2 / 100, Y2 × t2 /
(100, K2 × t2 / 100) Next, in S5, a display component when the above-described spot color 1 and spot color 2 are superimposed is calculated. Specifically, the following equation obtained by an experiment is used.

Display component: (c0, m0, y0, k0) =
(MAX (c1, c2), MAX (m1, m2), MA
X (y1, y2), MAX (k1, k2)) (however,
MAX (A, B) is the larger value of A and B) In S6, based on the display component calculated in S5, display data of character data (or graphic / ruled line data) (4 color components for each pixel) Has).

The processing of S3 to S6 is performed for all character data,
Repeat for figure data and ruled line data.

The process of S7 is constituted by repetition of S8 to S11. First, in S8 and S9, the display components of the spot colors 1 and 2 are acquired according to the color components (ci, mi, yi, ki) at a certain position in the image data and the spot color correspondence table.

Specifically, based on the setting contents of the spot color correspondence table, the ratio of the component configuration of spot color 1 and spot color 2 is expressed as
One of the C component, M component, Y component, and K component of the image data is assigned. In the case of FIG. 3, since the C component is assigned to the special color 1 and the M component is assigned to the special color 2, ci% is assigned to the special color 1 and mi% is assigned to the special color 2. Then, similarly to S3 and S4, the display component of the special color 1 and the display component of the special color 2 are obtained by the following equations.

Display component of spot color 1: (gc1, gm1, g
y1, gk1) = (C1 × ci / 100, M1 × ci /
100, Y1 × ci / 100, K1 × ci / 100) Display component of special color 2: (gc2, gm2, gy2, gk)
2) = (C2 × mi / 100, M2 × mi / 100, Y
2 × mi / 100, K2 × mi / 100) Next, in S10, the special color 1 and the special color 2 at a certain position in the image data are determined from the display component of the special color 1 and the display component of the special color 2.
Display components (gc0, gm0, gy0, g
k0) is calculated using the following formula, and in S11, display data of one pixel including four components is generated.

Display component: (gc0, gm0, gy0, g
k0) = (MAX (gc1, gc2), MAX (gm
1, gm2), MAX (gy1, gy2), MAX (g
k1, gk2)) The display data generation processing of the image data is completed by repeating the processing of S8 to S11 for all the pixels of the image data. Then, in S12, the display data generated in S2 and S7 is converted from CMYK to RGB, and
Display to.

According to the above flow, the document data of the same color as that of the two-color printing using the two special colors is displayed on the display device 6.

Next, processing for outputting to the color printer 7 will be described. The process of S13 is configured by repeating S14 to S17.

In S14 to S16, the color components by CMYK when the special color 1 and the special color 2 are superimposed on the character data (or the figure / ruled line data) are obtained in the same manner as in S3 to S5. Or
The printer output data of the figure / ruled line data is generated.

The processing of S14 to S17 is repeated for all character data, graphic data and ruled line data.

The process of S18 is constituted by repetition of S19 to S22. In S19 to S21, similar to S8 to S10, the spot color 1 and the spot color 2 at a certain position in the image data.
Is calculated by superimposing the color printer output components, and S
At 22, one pixel of printer output data composed of four CMYK components is generated. Then, the processing of S19 to S22 is repeated for all the pixels of the image data, thereby completing the processing of generating the output image data to the color printer 7.

According to the above flow, document data having the same hue as two-color printing using two special colors is output to the color printer 7.

Next, a process for generating separation output data using the information stored in the document data storage unit 9 and the spot color correspondence table storage unit 10 and outputting the data to the image setter 8 will be described with reference to FIG. Will be described according to the flow shown in the flowchart of FIG.

As shown in FIG. 6, first, it is determined which one of the special color 1 and the special color 2 is to be output (S31). If the special color 1 is to be used, the processing of S32 and S35 is performed. The processing of S38 and S41 is performed for the special color 2 plate.

The process of S32 is constituted by repetition of S33 and S34. First, in S33, character data (or graphic / ruled line data) and corresponding color information are read from the document data in the document data storage unit 9, and a component (t1%) of the spot color 1 of the data is acquired. Next, S34
In step S33, image setter output data of character data (or graphic / ruled line data) is generated based on the component of spot color 1 acquired in step S33. Then, the processing of S33 and S34 is repeated for all character data, graphic data, and ruled line data.

The process of S35 is constituted by repetition of S36 and S37. First, in S36, a color component (ci, mi, yi, ki) at a certain position in the image data is acquired, and the special color 1 is obtained according to the plate assignment in the special color correspondence table.
To obtain the separation output component (d1i). This is feature 1
D1i = ci if the C version is assigned, d if the M version
1i = mi, d1i = yi for Y version, d1i = for K version
ki, and in the case of this embodiment (FIG. 3), d1i = c
i.

Thus, one pixel output data of the image is generated in S37. The processing of S36 and S37 is repeated for all the pixels of the image data.

As described above, the special color 1 output data is output to the image setter 8 using the special color 1 output data generated in S32 and S35, and a special color 1 plate for coloring with the special color 1 ink is created.

Next, a process for outputting a plate for the special color 2 will be described. S38 is constituted by repetition of S39 and S40, and in the same manner as in S32, the output data of the special color 2 version is generated for the character data, graphic data, and ruled line data.

The process of S41 is constituted by repetition of S42 and S43. First, in S42, S3
6, the color component (ci, m) at a certain position in the image data.
From i, yi, ki), the color separation output component (d2i) of the spot color 2 is obtained according to the plate assignment in the spot color correspondence table. This is d2i if the C version is assigned as spot color 2.
= Ci, d2i = mi for M version, d2i = y for Y version
For the i and K versions, d2i = ki, and in the case of this embodiment (FIG. 3), d2i = mi. Thereby, output data of one pixel of the image is generated in S43.

The processing of S42 and S43 is repeated for all the pixels of the image data. As described above, the output to the image setter 8 is performed using the output data for the special color 2 generated in S42 and S43, and a special color 2 plate for coloring with the special color 2 ink is created.

A final two-color image print is created by coloring the two color separation output results for the special color 1 and the special color 2 output as described above with the respective special color inks and overprinting them. Is done.

As described above, in the present embodiment, when an image including a color image with two special colors is created, two color components of the basic color components of the full-color image are newly added to the special color 2
By combining color components corresponding to the color components and displaying and outputting a color component obtained by superimposing the two special colors on a CRT screen or a color printer, and enabling color separation printing, a two-color image using the two special colors can be converted to a CRT image. It can be easily created while checking the same color tone as the final printed matter on a screen or a color printer, and separation printing can be easily performed.

[0057]

As described above, according to the present invention, an input means for inputting data, and a special color correspondence table which is input from the input means and associates the color image data and the basic constituent colors of the color image with two special colors. And, image data storage means for storing the image data input by the input means, read the image data stored in the image data storage means,
Output data generating means for adding the special color correspondence table information to convert the output data into output data, and output means for outputting the output data obtained by the output data generating means to an output device, so that two special colors When a color image is created by the above method, the two-color printing image of the two special colors has the same hue as the image displayed on the display screen, so the operator can make adjustments while checking the actual hue on the display screen. it can.

[Brief description of the drawings]

FIG. 1 is a hardware block diagram of a document creation apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a document creation device according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of a spot color correspondence table according to an embodiment of the present invention;

FIG. 4 is a diagram showing a display example of an input screen of a spot color correspondence table according to an embodiment of the present invention.

FIG. 5 is an operation flowchart of the document creating apparatus according to the embodiment of the present invention.

FIG. 6 is an operation flowchart of a document creation device according to an embodiment of the present invention.

FIG. 7 is a diagram showing the concept of editing and outputting a two-color image by the document creating apparatus according to an embodiment of the present invention.

FIG. 8 is a diagram showing a configuration of a document handled by the document creation device according to an embodiment of the present invention.

FIG. 9 is an explanatory diagram illustrating the concept of two-color printing of a document handled by the document creation device according to an embodiment of the present invention.

FIG. 10 is a diagram showing the concept of full-color output of the document creation device according to an embodiment of the present invention.

FIG. 11 is a configuration diagram of document data of a document creation device according to an embodiment of the present invention.

FIG. 12 is a configuration diagram of character color data of a document creation device according to an embodiment of the present invention.

FIG. 13 is a configuration diagram of image data of a document creation device according to an embodiment of the present invention.

FIG. 14 is a diagram showing the concept of editing and outputting a two-color image by a document creation device in a conventional example.

[Explanation of symbols]

 Reference Signs List 1 CPU 2 RAM 3 ROM 4 Input device 5 Color scanner 6 Display device 7 Color printer 8 Image setter 9 Document data storage unit 10 Special color correspondence table storage unit

Claims (2)

[Claims] 1. An input means for inputting data; a special color correspondence table input from the input means for associating color image data and basic constituent colors of a color image with two special colors; and an image input by the input means. Image data storage means for storing data; output data creation means for reading out the image data stored in the image data storage means, adding the spot color correspondence table information and converting it to output data, and output data creation means Output means for outputting the output data obtained by the above to an output device. 2. An apparatus according to claim 1, wherein said output means outputs an image setter, and separates and outputs the image data into two plates for each special color.