JPH0695207B2 - Solid mesh film master making device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for producing a film original plate of a so-called solid mesh portion in a region where a color and density are constant in a printed matter.

[Conventional technology]

A large number of plain net parts are present in the color printed matter, but the plate making process of this plain net part is performed in a special process different from the general color part, so-called tone making plate making process. The conventional process will be described below with reference to the drawings.

FIG. 6 shows an example of a printed matter composed of a plain mesh portion.

In this figure, a printed matter 50 is composed of a person 51, a mask 35, and a character portion 53, and includes areas A1, A2, areas B1 to B6, areas C1, and areas.
The D1-D3, the area E1, the contour line S and the character W have a constant color. The plate making of such a printed matter 50 is performed as follows.

First, a block copy 60 as shown in FIG. 7 is created. This is a drawing of only the contour line S appearing in the printed matter 50 shown in FIG. Based on this artwork 60, a color instruction sheet 61 as shown in FIG. 8 is created. This color instruction sheet 61 has artwork 60
A contour line corresponding to the contour line S drawn in is roughly drawn, and in the areas A to E surrounded by the rough contour line, the color instruction as shown in the figure is made and the color pencil is instructed. It is painted in colors close to the color. Where area A
What is Y10, M50, C20 is that the halftone dot area ratio (hereinafter referred to as "halftone dot%") of the yellow plate is 50%, the halftone dot percentage of the magenta plate is 50%, and the halftone dot percentage of the cyan plate is 20% when the disassembled plate is created. %, The net% of the black plate is 0%.

Next, a camera image of the block 60 shown in FIG. 7 is taken to form a positive 71 and a negative 72 as shown in FIGS. 9 (a) and 9 (b). The positive 71 is used as a mask corresponding to the areas A to E shown in the color instruction sheet 61. The mask is formed by laminating a colorless transparent base film and a light-shielding film, and light is transmitted only through a portion where the light-shielding film is peeled off.
Therefore, a desired mask can be created by overlapping the positive mask 71 and the mask and cutting and peeling the oblique light film along the contour of the positive mask 71.

FIGS. 10 (a) to 10 (e) are schematic diagrams for explaining the created mask, and the shaded area is the portion where the light shielding film is peeled off.

In these figures, the masks 81 to 85 are the regions A to
Corresponds to E.

That is, the mask 81 is the area A1, A of the printed matter 50 shown in FIG.
Other than 2, mask 82 hides areas B1 to B6 of printed matter 50, mask 83 hides areas other than area C1 of printed matter 50, mask 84 hides areas other than areas D1 to D3 of printed matter 50, and mask 85 Covers the area other than the area E1 of the printed matter 50.

Then, a transparent film provided with uniform halftone dots at a predetermined halftone percentage (hereinafter referred to as "flat mesh") and the above masks 81 to 85.
A film original plate for each color is prepared by using and, and this is performed by overlaying a mask and a flat screen and printing on the film original plate to form halftone dots only on desired portions of the film original plate.

FIG. 11 shows an outline of the process from the block 60 to the production of the printed matter 50, 91 to 96 are plain nets, and the net percentages are 100%, 20%, 10% and 50%, respectively. %, 30%, 8%. The various flat screens 91 to 96 are prepared in advance. As described above, the masks 81 to 85 are formed from the block copy 71.

Here, the method for creating the yellow plate 41 will be described.
Masks 81 to 84 and flat screens 91 to 93 are used for this preparation.
First, the mask 81 and the flat net 93 are overlapped and printed on the film original plate to form 10% halftone dots in the area A. Then the mask
82 and flat screen 92 are overlaid and baked, and mask 83 and flat screen
92 is overlaid and baked, and finally, the mask 84 and the flat screen 91 are overlaid and baked, and 10 are respectively applied to regions B to D of the same film original plate.
The yellow plate 41 is created by forming halftone dots of%, 20% and 100%. Similarly, a magenta plate 42 is created from the masks 81 to 83 and the flat screens 93 to 95, and a cyan plate 43 is created from the masks 81 to 83,85 and the flat screens 92,93,96.

Also, since the black plate 44 is composed only of the contour lines drawn on the block 60 shown in FIG. 7, no mask is used,
It is made from the negative 72 and the flat screen 91 shown in FIG. 9 (b).
That is, the negative 72 and the flat net 91 are overlapped and baked on the film original plate to form 100% halftone dots in the contour line portion, and the black plate 44 is produced. A printed matter 50 is created from the yellow plate 41, the magenta plate 42, the cyan plate 43, and the black plate 44 thus created.

[Problems to be solved by the invention]

As described above, the conventional plate making process of the solid mesh is a complicated process using various masks and flat screens, and all of them are performed manually, so that it takes a long time to make the final film original plate of each color. In addition to the above, there is a problem that an error in the pattern position is likely to occur in the work of mask making and overprinting, and a desired printed matter cannot be efficiently obtained.

These matters have a mission peculiar to the printing industry, such as a large amount of printed matter having to be accurately produced in a small number of days. In recent years, there is a trend to perform the solid mesh plate making process with a layout scanner having a computer, but each pattern mesh% based on the color instruction on the screen.
It is necessary to input data, which complicates the processing operation and poses a practical problem.

The present invention has been made to solve the above-described problems, and reads a document on which a line image is drawn, and uses line image coordinate information and color instruction information that are input in the read line image. Based on the coloring based on the input line image coordinate information and the input color instruction information in the read line image, the solid halftone color separation data is created and the solid halftone film master plate is output to output the original document. It is an object of the present invention to provide a solid halftone film original plate producing apparatus capable of efficiently making a solid halftone film original plate while confirming a color instruction result of each line image on a screen.

[Means for solving problems]

The solid mesh film original making apparatus according to the present invention includes an image reading unit for reading a line image drawn on a document, a display unit for displaying the image read by the image reading unit, and a line image read by the image reading unit. Image storage means, coordinate information input means for designating the arrangement position coordinates of the line image on the original, and halftone percentages for each plate color for each line image sequentially designated by the coordinate information input means. Screen percentage input means, halftone percentages for each plate color input by the halftone percentage input means, and the display means based on the arrangement position coordinates of the line image on the original designated and input by the coordinate information input means. A coloring means for coloring and displaying the line image displayed on the display means, and a dot percentage for each color of the line image colored and displayed on the display means by the coloring means; A solid halftone color data creating means for creating the solid halftone color data of the line image based on the position coordinates, and the solid halftone halftone data created by this solid halftone color data creating means. An original plate output means for outputting a solid halftone color separation plate to a predetermined film material based on the color data.

[Action]

According to the present invention, when the halftone dot percentage for each plate color in each line image sequentially designated by the coordinate information input device is input from the halftone dot percentage input device, the coloring device color-displays the line image displayed on the display device. Then, the solid halftone dot color data creating means creates the solid halftone dot color data of the line image on the basis of the color-wise halftone percentages and the arrangement position coordinates for the colored line image, and the created plain halftone dot color data. Based on the above, the original plate output means outputs a solid halftone color separation plate to a predetermined film material.Therefore, it is necessary to confirm the coloring result which is the color instruction result of each line image on the screen before creating the solid halftone film original plate. It is possible.

〔Example〕

FIG. 1 is a block diagram for explaining the configuration of a solid mesh film original making apparatus showing an embodiment of the present invention.
Is an input scanner which is an image reading means of the present invention, and can scan the scanning head to read the image data of the contour line drawn on the block 60 at a line element density of 16 lines / mm. An output device 2 is composed of, for example, an XY plot, and draws an entry number (described later) on a line image displayed on the bitmap display 8 on a predetermined film material. An interface 3 transfers the image data read from the input scanner 1 via the data bus 4 to the magnetic disk device 5 serving as the image storage means of the present invention. Reference numeral 6 denotes a host computer having the coloring means 6a and the solid halftone color data creating means 6b of the present invention, which is located in the area designated by the tablet 7 which is the color information input means in the picture image image stored in the magnetic disk device 5. Similarly, color indication information input from the tablet 7, such as halftone dot% (Y20, M30,
C20) or color based on the color code and display on the bitmap display 8. When correcting the color image of the picture image displayed in color on the bitmap display 8, the doublet 7 gives an instruction to that effect (details will be described later). Reference numeral 9 denotes an output scanner which is the original output means of the present invention, and prints a solid halftone color for each color on a predetermined film material based on the solid halftone color data created by the host computer 6 output through the data bus 4.
Reference numeral 10 is an interface for outputting the solid halftone color separation data to the output scanner 9. Reference numeral 11 denotes an input memory, which stores solid-state network creation information, and displays a selection screen (described later) on the bitmap display 8 when the host computer 6 needs it. In the plain halftone film original plate making apparatus configured as described above, the halftone percentage of each plate color in each line image sequentially indicated to the coordinate information inputting means (tablet 7) is the halftone percentage inputting means (from the tablet 7 in this embodiment). The line image displayed on the display means (bitmap display 8) from the coloring means 6a is displayed in a colored manner, and the dot percentage and the arrangement position for each color with respect to the colored line image are displayed. The solid halftone color separation data creating means 6b creates the solid halftone color separation data of the line image based on the coordinates, and the original output means (output scanner 9) makes the predetermined film material based on the created solid halftone color separation data. Since a solid halftone color separation plate is output to, it is possible to create a solid halftone film original plate after checking the coloring result which is the color instruction result of each line image on the screen. It

Next, with reference to FIGS. 2 (a), 2 (b) and FIG. 3, the plain network original making control operation according to the present invention will be described.

2 (a) and 2 (b) are schematic diagrams for explaining the operation of creating a plain net master according to the present invention.

In FIG. 3A, reference numeral 21 denotes a block copy document, on which line drawings 31 to 33 are drawn. In the same figure (b), 22 is a color instruction sheet in which halftone dots corresponding to the line drawings 31 to 33 are written.

FIG. 3 is a flow chart for explaining the image registration control operation in the plain network original printing operation according to the present invention. Note that (1) to (5) indicate each step.

When a start signal is given from the operation unit 15 connected to the host computer 6, the scanner input of the image data of the block copy 60 set in the output scanner 6 is executed (1), and the captured image data is binary. It is processed (2) and stored in the memory in the host computer 6. The stored image data is read out for every several lines, and dust removal processing is executed (3). The dust removal process is a process in which pixels smaller than a few pixels are automatically considered as dust. Next, compression of the image data is executed (4). This data compression is performed by replacing one line of the binarized image data with address data of a point where white changes to black or black changes to white. The data compressed in this way is firstly processed by the host computer 6.
The magnetic disk device 5 is sent to the data bus shown in the figure.
(5).

Next, with reference to FIGS. 4 (a) to 4 (d), the operation of producing the solid mesh film original plate according to the present invention will be described generally.

4 (a) and 4 (b) are views for explaining the line image numbers output from the output device 2 shown in FIG. 1, and FIG.
In the figure, F is a transparent film material, and shows a state in which each line image number F _{1 to} F ₉ created by the host computer 6 is output to a position corresponding to the line image position designated by the tablet 7. The figure (b) shows the line image which overlaps the film F shown in the figure (a).

FIG. 4 (c) is a schematic view showing an example of a selection screen displayed on the bitmap display shown in FIG.
The same parts as those in the figure are designated by the same reference numerals.

In the figure, reference numeral 35 is an entry area in which each plate color (magenta, cyano, yellow, black) and halftone% selected by the touch pen of the tablet 7 are sequentially entered. 36 is a plate color selection area, a magenta area 36M,
Cyan area 36C, yellow area 36Y, black area 36
It is composed of K etc. 37 is the area for specifying the amount of scratches,
Magenta area 36M, cyan area 36C, and yellow area according to the amount of scratches (1%, 5%, 10% in this embodiment) selected by the touch pen of the tablet 7.
36Y, Black Area You can change the amount of scratches displayed in 36K.

FIG. 4 (d) is a flow chart for explaining the operation of producing a solid halftone film original plate according to the present invention. In addition,
(1) to (17) show each step.

First, the line image is placed at an arbitrary position on the tablet 7 and waits until the reference point designation is input (1). When the reference point is input, the selection screen shown in FIG. 4 (c) is displayed. The display command input is awaited (2), and when the selection screen display command is input, the solid network creation information for creating the selection screen is read from the input memory 11 and the selection screen is displayed on the bitmap display 8 (3 ). Next, the process waits until the desired plate color and halftone% are selected by a touch pen (not shown) (4). When the desired plate color and halftone% are selected, the line image placed on the tablet 7 Waiting for any line image to be picked (5), and when the line image is picked, the line image is selected in the entry area 35 and the plate color and halftone% selected.
Is displayed in color (6). Such an operation is performed on all line images. Here, it is judged whether the line image (pattern) pick is finished (7), if NO, the process returns to step (4), and if YES, the correspondence table created in the entry area 35 is set in a predetermined area of the internal memory of the host computer 6. Register (8). Next, it waits for an output command of the entry number corresponding to each line image from the tablet 7 to be input (9), and when input, the entry corresponding to each line image position is provided on the film material arranged at the predetermined position of the output device 2. Draw numbers (10). As a result, the film material shown in FIG. 4 (a) is obtained, and by superimposing it on the line image (see FIG. 4 (b)) placed on the tablet 7, a new color instruction sheet is obtained. You can Then, step (1)
To (10), the position of each line image created in the internal memory of the host computer 6 and the input scanner 1
Color separation processing is performed to align with the image data input from (11). Then, the coloring state of the block copy 60 or the film original 2 is confirmed (12). Here, the color separation data is corrected (13) and smoothing processing is performed (1
Four). Then, perform a double process to prevent color smear (1
Five). Next, the scanner output command is awaited from the operation unit 15 (16), and when the scanner output command is input, as shown in FIG. 5, the solid halftone color original plate for each printing color is printed on the sill material set in the input scanner 9. The yellow version 41, magenta version 42, cyan version 43, and black version 44 are output (17).

In the above embodiment, since it is necessary to keep each area of the line image closed during the color separation processing, new contour line data must be created for the unclosed area. Therefore, in steps (1) to (10) shown in FIG. 4 (d), bank information for forming a closed line image for a line image that is not closed at the time of picking the line image (broken section) (Contour line data for connecting) is input from the tablet 7 to be recognized by the host computer 6, or when a block copy 60 or a copy image thereof is input from the input scanner 1, a transparent film is added to the block copy or block copy 60. By pasting and drawing a contour line on a transparent film with a drawing means such as a marker and inputting it as if the contour line is closed at the time of reading, color separation processing is performed even on a line image that is not closed. It may be configured to be able to.

〔The invention's effect〕

As described above, according to the present invention, when the halftone percentage for each plate color in each line image sequentially instructed to the coordinate information input means is input from the halftone percentage input means, the coloring means displays the line image on the display means. The inside is colored and displayed, and the solid halftone dot color data creating means creates the solid halftone dot color data of the line image on the basis of the halftone percentages for each color and the arrangement position coordinates for the colored line image, and the created solid Since the original output means outputs a plain halftone color plate to a predetermined film material based on halftone color data, after checking the coloring result which is the color instruction result of each line image on the screen, Since it is created, it is possible to confirm the coloring result, which is each instruction result of each line image, on the screen, and then perform the production of the solid mesh film original plate.

Therefore, it is possible to confirm on the screen the coloring state associated with the color instruction for the line drawing or illustration to be printed, and to change or partially correct the color instruction while visually confirming on the screen. It is possible to effectively produce a final solid mesh film original plate for each plate color that becomes a colored state.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining the structure of a plain net film making apparatus showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are for explaining a plain net original plate making operation according to the present invention. FIG. 3 is a schematic diagram for explaining the operation of creating a solid mesh original plate according to the present invention, FIG. 4 (a),
FIG. 4 (b) is a diagram for explaining line image numbers output from the output device shown in FIG. 1, FIG. 4 (c) is a schematic diagram for explaining a selection screen according to the present invention, and FIG. 4 (d). Fig. 5 is a flow chart for explaining the operation of producing a solid halftone film original plate according to the present invention, Fig. 5 is a schematic diagram showing an example of the plain halftone color original plate according to the present invention, and Fig. 6 is an example of a printed matter composed of the plain halftone net part. FIG. 7 is a schematic diagram for explaining the composition of the block copy, FIG. 8 is a schematic diagram for explaining the color instruction sheet, and FIGS. 9A and 9B are relative relationships between negative and positive. Fig. 10 (a) to (e) are schematic diagrams for explaining the prepared mask, and Fig. 11 is a schematic diagram for explaining the steps from the block copy to the production of the printed matter. is there. In the figure, 1 is an input scanner, 2 is an output device, 3 and 10 are interfaces, 4 is a data bus, 5 is a magnetic disk, 6 is a host computer, 6a is coloring means, 6b is plain halftone color data creating means, and 7 Is a tablet, 8 is a bitmap display, 9 is an output scanner, and 11 is an input memory.

Claims (1)

[Claims] 1. An image reading unit for reading a line image drawn on a document, a display unit for displaying the image read by the image reading unit, and an image storage unit for storing the line image read by the image reading unit. Coordinate information input means for instructing the position coordinate of the line image on the document,
Halftone dot input means for inputting halftone dot percentages for each plate color in each line image sequentially instructed to this coordinate information inputting device, halftone dot percentages for each plate color inputted by the halftone dot percentage input device, and the coordinate information input device Coloring means for coloring and displaying the inside of the line image displayed on the display means based on the arrangement position coordinates of the line image on the document input by the instruction, and the line image colored by the coloring means on the display means. Solid halftone color data creating means for creating solid halftone halftone color data of a line image based on halftone percentages and arrangement position coordinates for each color, and solid halftone halftone color data creation by this solid halftone halftone color data creating means An original printing means for outputting a solid halftone color separation plate to a predetermined film material based on the solid halftone color separation data created by the means. Apparatus.