KR19980040810A - Color separation printing method of color ink jet printer - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

A color ink jet printer relates to a method of printing a color image.

I. The technical problem to be solved by the invention

A color separation printing method capable of printing a color image publishing film using a color ink jet printer is provided.

All. Summary of Solution of the Invention

Color image data received from the host computer is decomposed into respective basic color images, and the decomposed images of each color are sequentially printed on paper of different pages.

la. Important uses of the invention

Used to produce film for color image publication.

Description

Color separation printing method of color ink jet printer

The present invention relates to a color ink jet printer, and more particularly to a method of printing a color image.

In general, a color ink jet printer prints a color image according to color image data transmitted from a host computer such as a personal computer (PC) on a recording medium and outputs the color image. The color image data is generated by a host computer and is typically composed of three basic colors: cyan, magenta, and yellow. The color ink jet printer implements a color image by combining the basic colors by spraying and printing the color ink of the primary color according to the color image data onto a sheet of paper.

Meanwhile, a color image publication film is used for color image publication. The color image publishing film requires three films each decomposed into three primary colors for one color image. Such color image publishing films have been typically produced using a separate publishing system. If a color ink jet printer is used to print color image publishing films, it will not only require a separate publishing system, but will also ease work and reduce costs. However, the conventional color ink jet printer prints a color image including all colors according to the color image data, and cannot print it by decomposing it into each basic color image.

As described above, since the conventional color ink jet printer does not have a color separation printing function, even if the user has a color ink jet printer, it is inconvenient to use a separate publishing system to produce a film for color image publication. There was a ham.

Accordingly, an object of the present invention is to provide a color separation printing method capable of printing a color image publishing film using a color ink jet printer.

1 is a block diagram of a conventional color ink jet printer,

2 is a process flow diagram of color separation printing according to an embodiment of the present invention.

The present invention for achieving the above objects is characterized by decomposing color image data received from a host computer into respective primary color images, and sequentially printing the disassembled respective color images on paper of different pages.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description and in the accompanying drawings to provide a more general understanding of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram of a general color ink jet printer to which the present invention is applied. The central processing unit (CPU) 100 executes a program stored in the ROM 104 to control each part of the ink jet printer through the input / output interface 102. The ROM 104 stores an execution program of the CPU 100 and various reference data. The RAM 106 temporarily stores data according to the operation of the CPU 100. The input / output interface 102 interfaces signals input / output between the CPU 100 and input / output devices, that is, the operation panel 110, the motor drivers 112, 116, and the head driver 120. PC interface 108 provides an interface to a PC as a parallel interface for receiving data from a PC that is a host computer. The operation panel 110 has a plurality of keys for inputting various commands to the CPU 100 and a display device for displaying various states by the CPU 100. The motor driving unit 112 drives the carriage transfer motor 114 under the control of the CPU 100. The carriage transfer motor 114 is driven by the motor driving unit 112 and transfers a head cartridge (not shown) in which the head 122 is installed. The motor driver 116 drives the paper feed motor 118 under the control of the CPU 100. The paper feed motor 118 is driven by the motor driving unit 116 to convey the paper. The head driver 120 drives the head 122 under the control of the CPU 100 to record the color image on the paper. The head 122 is a color recording head in which a plurality of nozzles in which emission holes are formed are arranged. The head 122 is driven by the head driving unit 120 to inject color ink of a basic color onto paper.

In order to perform the color separation printing function according to the present invention, the color ink jet printer as described above stores the program of the CPU 100 according to the flowchart of FIG. 2 in the ROM 104. An example of color separation printing as the color ink jet printer of FIG. 1 will now be described in detail with reference to FIG. First, when the CPU 100 of FIG. 1 receives data to be printed from the PC, in response to this in step 200 of FIG. 2, the CPU 100 examines key input from the operation panel 110 in step 202 to select a color separation mode. Check whether or not. The color separation mode is selected by a key input on the operation panel 110 when the user wants to print a color image publishing film. At this time, the user inputs a print command to the PC to print the image to be printed on the color image publishing film from the PC to the color ink jet printer of FIG. 1. In the paper feeding apparatus of the color ink jet printer, a film to be used as a film for color image publication is mounted as paper. At this time, if the color separation mode is not selected, the CPU 100 prints the color image according to the color image data received from the PC on the paper, discharges the paper, and then exits the paper as in the normal operation (218) to (220). do.

On the other hand, when the color separation mode is selected in step 202, the CPU 100 decomposes the color image data received from the PC into respective basic color images in step 204. At this time, the color of the color image data is distinguished by a code included in the header of the color image data, that is, a code mutually promised between the PC and the printer. Accordingly, the color image data is decomposed into three basic color images of cyan, magenta and yellow. In this way, the CPU 100 sequentially prints the image of each color that has been dissociated on paper of different pages in steps 206 to 216. That is, first, after printing the cyan color image on the paper in steps (206) to (208), the printed paper is discharged, and then after printing the magenta color image on the paper in steps (210) to (212), the printed paper is printed. The paper is discharged, and finally, in steps 214 to 216, the cyan color image is printed on the paper, and then the printed paper is discharged and finished.

Therefore, the color image publication film is printed by sequentially printing the images of each color according to the color image data on paper of different pages.

As described above, the present invention can not only produce a color image publication film by printing a color image publication film using a color ink jet printer but also reduce a cost without using a separate publishing system. There is this.

Claims (4)

In the printing method of a color ink jet printer, A color separation printing method characterized by decomposing color image data received from a host computer into respective basic color images, and sequentially printing the decomposed color images on paper of different pages. The color separation printing method according to claim 1, wherein the basic colors are three types of cyan, magenta, and yellow. The color separation printing method of claim 2, wherein the color of the color image data is distinguished by a code included in a header of the color image data. The color separation printing method according to claim 3, wherein the color separation printing is performed when the color separation mode is selected by a user's key input.