JPH0234871A - Resolving plate producing device - Google Patents

Abstract

PURPOSE:To produce a resolving plate for printing by generating each color component signal for printing from an inputted image signal, inputting each generated color component signal to a printer and producing a monochromic image represented by each color component signal. CONSTITUTION:The inputted image signals are respectively converted from red, green and blue signals to yellow, magenta and cyan (Y, M and C) signals; one of the Y, M and C signals is impressed on a thermal head 28; Y, M and C, i.e., the three colors of ink on an ink sheet 30 are overlapped and transferred, whereby the monochromic image is produced on a transparent sheet 32. Accordingly, an original for printing corresponding to the used signal is produced. In the same way, other originals are produced through the use of other Y, M and C signals, therefore, the originals of the three colors, i.e., Y, M and C for printing can be produced. When an plate for practical use is produced through the use of the thus attained Y, M and C plates, an image that is represented by the inputted image signal can be color-printed. The resolving plate for printing can be thus easily produced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a separation plate making device, and more particularly to a separation plate making device that uses video signals to create three color separation plates used in simple printing.

As is well known, in color printing, three color separation plates are used, and color printed matter is obtained by printing ink on printing paper with each of these plates. 3 like this
Color separation plates, for example, convert color originals into R by using filters.
Separate the colors into the three primary colors of GB, expose to film, and correct one color.
It is created by performing processing such as halftone shooting.

Therefore, in order to create a three-color separation plate, a hard copy color original was required.

On the other hand, a method has also been proposed in which a three-color separation plate for printing is created using a video signal of a color image.

After inputting a video signal and separating it into three color components, a color scanner or electronic engraving plate making device is used to create each separated plate using the three color components, which has the disadvantage that the device is complicated and expensive.

An object of the present invention is to overcome the drawbacks of the prior art and to provide an apparatus for creating separated plates that can easily create separated plates for printing using video signals.

DISCLOSURE OF THE INVENTION According to the present invention, a separation plate making device that receives a video signal representing a color image and creates a color printing plate using the video signal stores the input video signal for each color component signal. a color component signal selection means for selecting a color component signal read out from the storage means; and a color component for converting the color component signal selected and read out by the one-color component signal selection means into a color component signal for printing. It has a signal converting means, and a printing means for performing thermal transfer printing using the color component signals converted by the color component signal converting means, and the printing means converts the image to be printed using each of the color component signals converted by the color component signal converting means. It forms a black and white image on the body.

Next, create an exploded version according to the present invention with reference to the attached drawings! 1e
An example of ft will be described in detail.

FIG. 1 shows an embodiment of the decomposition plate making apparatus according to the present invention. This device is an NTSC signal input device.
It has a C input terminal 10 and an RGB input terminal 12 into which RGB signals are input. NTSC: Input from input terminal IO is connected to decoder 14. The decoder 14 creates a ROB signal from the N-cho SG signal. Decoder 14
The output of and the input from the RGB input terminal 12 are connected to an AD converter 16. The AD converter 16 converts the input color-separated video signal into a digital signal. A
The output of the D converter 16 is connected to a frame memory 18.

The frame memory 18 is composed of a RAM, etc., and stores input color-separated video signals, and reads out these signals according to control signals from the control section 40.The output of the frame memory 18 is connected to the data selector 20. There is. The data selector 20 selects and reads out one of the RGB signals read out from the frame memory 18 in response to a control signal output from the control unit 40 in response to an instruction input by the operator through the input operation unit 36. , This specifies which of the three YHC color separations is to be created.

The output of the data selector 20 is connected to a line memory 22. The line memory 22 stores the input video signal in one
MM for the line and output. The output of the line memory 22 is connected to the gradation control unit 24. The 0 gradation control unit 24 is
It is connected to the gradation control lookup table 26, and converts any of the input RGB signals into YMC signals for printing according to the lookup table data read from the gradation control lookup table 26. The gradation control unit 24 also receives lookup table data from the gradation control lookup table 26 in accordance with a control signal sent from the control unit 40 in response to a gradation correction instruction input by the operator from the input operation unit 36. is read out, and gradation correction of the video signal is performed based on this. Gradation control section 24
The output of is connected to the thermal head 28 of the printer.

As shown in FIG. 2, in the printer, an ink sheet 30 for transferring ink is brought into contact with a transparent film 32 on which an image is recorded and which becomes a manuscript of a printing plate, and an ink sheet 30 for transferring ink to the transparent film 32, on a platen drum 50. A thermal head 28 is arranged on the side. The transparent film 32 and the ink sheet 30 are each driven by the blink drive unit 34 of FIG. 1 so as to be moved in the directions of the arrows. As shown in FIG. 3, the ink sheet 30 is made by adhering ink 30b containing a sublimable dye to a base 30a such as a polyester film, and when the thermal head is energized and heated, the base 30a is heated. The attached ink 30b is sublimated and transferred onto the transparent film 32.

As shown in FIGS. 2 and 4, the ink sheet 30 is
Three primary colors for printing: yellow (Y) and magenta (M)
, an area Y to which three types of ink, cyan (C), are attached;
M and C are formed sequentially. Inkcy) 30 can be easily handled as salt if it is stored in a cassette, for example.

Returning to FIG. 1, the printer drive section 34 drives the transparent film 32 and ink sheet 30 loaded in the printer in response to control signals from the control section 40.

The output of the frame memory 18 is also connected to an OA converter 42 . The OA converter 42 converts the ROB video signal output from the frame memory 18 into an analog signal. [The output of the lA converter 42 is sent to the encoder 44
It is connected to the. The encoder 44 is an input ROB
Converts the signal to an NTSC signal and outputs it to the CRT 4B.

The CRT 48 displays an image to be printed by this device.

The control unit 40 is a control unit that controls each functional unit of the present device, and is advantageously configured by a microprocessor.

The operation of this device will be explained.

Load the ink sheet 30 into the printer and set the first transparent film 32. NTSC input terminal 1
When a video signal of an NTSC signal representing an image for plate making is input from 0 to 1, the video signal is input to the decoder 14, and the decoder 14 creates an RGB signal. The RGB signals are sent from the decoder 14 to the AD converter 16, where they are AD converted. Note that when RGB signals are input from the RGB input terminal 12, the input RGB signals are sent as they are to the An converter 16 and are AD converted.

The RGB signals subjected to the 4-way conversion are sent to the frame memory 18, and RGB signals for l frames are stored. Control unit 4
The ROB signal read from the frame memory 18 in response to the control signal from 0 is sent to the data selector 20.

When the operator inputs an instruction for the first plate to be created, for example, a magenta plate, from the input operation section 3B, this instruction signal is sent from the input operation section 3G to the control section 40, and in response, the control section 40 Based on the output control signal, the data selector 20 selects and reads out one of the RGB signals read out from the frame memory 18.
Output only the signal.

The signal output from the data selector 20 is sent to the line memory 22 and stored therein. When data for one line is accumulated, the data is read out by a control signal from the control unit 40 and sent to the gradation control unit 24.The data of the RGB signal input to the 0 gradation control unit 24 is The data is converted into YMC signal data using the lookup table read from the tone control lookup table 26 and sent to the thermal head 28. In this case, for example, a magenta (N) signal is sent to the thermal head 28.

The transparent film 32 and the ink sheet 30 are driven by the printer driving section 34, and first, the yellow area Y of the ink sheet 30 performs thermal transfer in accordance with the signal input to the 12 door 28. In this case, since only the magenta signal is input to the thermal head 28, an image of the magenta signal is formed on the transparent film 32 using yellow ink.

Next, the transparent film 32 is set so that it overlaps the area where the image is formed with the yellow ink and the ink is transferred again. The magenta signal is still input to the thermal head 28, and the ink sheet 30 moves so that the next magenta area M comes into contact with the transparent sheet 32. This time, the image based on the magenta signal is converted into yellow ink by magenta ink. is formed by superimposing it on the image.

Furthermore, in the same manner, the transparent film 32 is set so that it overlaps the area where the image is formed with yellow and magenta ink so that the ink is transferred again. At this time, the magenta signal is still input to the thermal head 28, and the ink sheet 32 moves so that the next cyan area C comes into contact with the transparent sheet 32, so the image based on the magenta signal is superimposed by the cyan ink. It is formed by

In this way, the magenta signal is input to the thermal head 28, and the yellow Y, magenta M,
The inks of each color of cyan C are superimposed on the same portion of the transparent sheet 32 to form an image. The formed image is a black and white image because the yellow, magenta, and cyan color inks are transferred using the same signal and the five color inks have the same density. Since this black and white image is formed by inputting a magenta signal to the thermal radar 28, it becomes a manuscript for a magenta plate used in printing. Therefore, a magenta practical version can be created using the black and white image formed on the transparent sheet 32 in this manner.

Similarly, a yellow (Y) signal is input to the thermal head 28, and this signal causes the ink sheet 30 to be yellow Y,
If an image is formed by superimposing the inks of magenta M and cyan C on the same portion of the transparent sheet 32, a yellow plate original image is formed. In addition, a cyan (C) signal is input to the thermal head 28, and depending on this signal, the ink sheets 30 are colored yellow Y, magenta M,
If an image is formed by superimposing the inks of each color of cyan C on the same portion of the transparent sheet 32, a cyan plate original image is formed.

As described above, according to this embodiment, an input video signal is converted from an RGB signal to a YMC signal for printing, and one of the YMC signals is applied to the thermal head 28 to A black and white image is formed on the transparent sheet 32 by superimposing and transferring three colors of magenta and cyan ink.

Therefore, a printing plate manuscript corresponding to the one signal used is created. Similarly, other YMC signals can be used to create other versions of the original, thereby creating a three-color YMC version of the original for printing.

By creating a practical version using the YMC version obtained in this manner, it is possible to perform color printing of an image represented by an input video signal.

As described above, according to this embodiment, a printing plate can be created by inputting a signal created using an input video signal to the printer's thermal head on the second day, unlike the conventional method. It is not necessary to create hard copies of color images for the production of separations.

In addition, since the ink sheet 30 is formed by sequentially applying three colors of ink (yellow, magenta, and cyan) to different areas, it is possible to print a color image using the input video signal using normal ink. The sheet can be used as is, and there is no need to use a special ink sheet for plate making.

In the above embodiment, an ordinary color printing ink sheet 30 is used, which is formed by sequentially applying three colors of ink of yellow, magenta, and cyan to the respective regions, but black (K) An ink sheet for plate making formed by applying the ink may be specially prepared and used.
When using an ink sheet formed with such black (K) ink, it is sufficient to apply one signal of YMC to the thermal head 28 and print once with the black ink sheet, and the above-mentioned method is sufficient. Like yellow,
There is no need to perform three superimposed printings using the three color inks of magenta and cyan.

In addition, if you use an ink sheet that is coated with black ink in addition to the three colors yellow, magenta, and cyan, you can perform normal color printing and create plates using black ink. can.

According to the present invention, each color component signal for printing is created from an input video signal, each of the created color component signals is input to a printer, and a monochrome image represented by each color component signal is created. Therefore, it is possible to directly create separation plates for printing by selecting the color components of the input video signal, without creating a hard copy from the video signal and color-separating it using the normal separation plate creation method. can.

As described above, according to the present invention, separated plates for printing can be created using a simple device.

Further, separation plates can be created using a color printer as is.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the disassembled plate making apparatus according to the present invention, Fig. 2 is a perspective view of the printer section of the apparatus shown in Fig. 1, and Fig. 3 is a printer section of the apparatus shown in Fig. 1. FIG. 4 is a diagram of an ink sheet used in the apparatus of FIG. 1. ' code snow 18, frame memory 20, data selector 22, line memory 24, gradation control unit 26°28°30°32. , look-up table for gradation control, thermal head, ink sheet, transparent sheet Patent applicant Fuji Photo Film Co., Ltd. Representative Takao Katori Takao Maruyama

Claims (1)

[Scope of Claims] 1. In a separation plate making device that receives a video signal representing a color image and uses the video signal to create a color printing plate, the device converts the input video signal into a color component signal. color component signal selection means for selecting the color component signals read out from the storage means; color component signal selection means for selecting and reading out the color component signals from the color component signal selection means as color components for printing; a color component signal conversion means for converting the color component signal into a signal; and a printing means for performing thermal transfer printing using the color component signal converted by the color component signal conversion means, the printing means having a color component signal conversion means for converting the color component signal into a signal. What is claimed is: 1. A separation plate making device that forms a black and white image on a printing material using each of the color component signals. 2. In the apparatus according to claim 1, the printing means uses an ink sheet to which inks of three colors of yellow, magenta, and cyan are sequentially adhered, and by thermally transferring the ink on the ink sheet to the printing material. Printing is performed by superimposing and printing the three color inks of yellow, magenta, and cyan on the same portion of the printing medium using each of the color component signals converted by the color component signal conversion means. Disassembled plate creation device featuring: