JPH0527408A - Production of precision multiline plate - Google Patents

Abstract

PURPOSE:To provide an embossed line or printing plate by drawing the multiline in the directions varying with each of fine regions within a short period of time. CONSTITUTION:This process has 1st stages S3 to S5 forming the closed region information to form the closed regions at every prescribed value part of the measured values of the information on the original picture obtd. from an original, a 2nd stage S6 for forming the information on the multilines for forming the multilines of the directions varying in the angle with the adjacent closed regions in accordance with the information on the closed region, 3rd stages S7, S8 for forming films for exposing the multiline plate in accordance with the information on the closed regions and the information on the multilines, and 4th stages S9, S10 for inscribing the multilines of the angles varying with the adjacent closed regions of a metal based on this film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a precision line plate for embossing or printing, and particularly to a precision line plate for forming lines having different angles in each complicated and fine area. Manufacturing method.

[0002]

2. Description of the Related Art For example, in a decorative board of a building material, a transparent film having a fine line screen (line) engraved on a lower plate on which a predetermined pattern is drawn is attached and There is a type that makes different patterns visible.

An embossing plate or a printing plate having a precision line is used for producing such a transparent film, and for example, the method described below has been used for producing the precision line plate.

That is, as shown in FIG. 4A, a handwritten manuscript 51 having a large number of closed areas is prepared. A closed area with a reference numeral is selected from the closed areas to prepare a mask original plate 52 having a white portion (that is, a reference numeral portion) shown in FIG. 4B. Similarly, a blank mask original plate (not shown) is prepared based on the closed area indicated by the reference numeral. Similarly, four mask original plates obtained by dividing the closed region shown in FIG. 4A are prepared, and further straight line lines drawn by the plotter are prepared. This is scaled up and down by the camera according to the line ratio and pitch. Then, the mask original plate 52 corresponding to the closed area of the code is overlaid with the line film in the first direction for the first exposure, and the line film in the second direction is overlaid for the closed area of the code for the second time. Do the same for 3
The second and fourth multiple exposures are performed. In this way, as shown in FIG. 5 (A), a film 53 for creating a parallel plate, in which different straight lines are drawn for each closed region, is created. Based on this film 53, the metal was etched to form a precision line plate.

[0005]

However, since handwritten manuscripts have been used conventionally, there is a limit in drawing a complicated and fine mask shape (closed area).

Therefore, an object of the present invention is to provide a method for manufacturing a precision parallel plate capable of drawing a complicated and fine mask shape.

[0007]

In order to achieve the above object, the present invention creates closed area information for forming a closed area for each predetermined value portion of the measured value of original image information obtained from a document.
A second step of creating line information for forming lines with different angles in adjacent closed regions based on the step and the closed region information
Step, and a third step of producing a film for exposure on a parallel plate based on the closed area information and line information, and engraving lines with different angles in the adjacent closed areas of the metal based on this film And a fourth step.

[0008]

According to the present invention, a document having a density gradation such as a photograph of a landscape or a picture, a painting or the like is read by a scanner. At this time, the measured value (for example, the value of the density difference) of the original image information distributed on the screen of the original is detected, and the closed area is created for each part within a certain range where the measured value is almost equal. Create area information. On the other hand, line information for drawing a straight line is created in this closed area, and a straight line is drawn in an adjacent closed area among the closed areas. Based on the closed area information and the line information created in this way, a film for line-slab exposure in which a straight line is drawn for each adjacent closed area is created. Based on this film, for example, a straight line is engraved in each closed region adjacent to the metal plate by exposure and etching. A precision parallel plate is prepared using this metal plate.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. First Embodiment In this embodiment, the creation of a closed area corresponding to an original image and the work of incorporating a straight line in this closed area are all performed inside the information processing apparatus.

FIG. 1 shows a flow chart of the first embodiment of the present invention, and FIG. 3 (A) shows the created closed region.
(B) Information processing device W used when implementing the present invention
Indicates.

First, an information processing apparatus W used when implementing the present invention will be described with reference to FIG. Figure 3
As shown in (B), the workstation 1 is connected to an input scanner 2 for reading original image information (for example, density difference) for each closed region of a pattern of a document (for example, cork plate) not shown. Further, the work station 1 is connected to an output scanner 3 for outputting a film for exposure on a parallel plate that has been subjected to a predetermined process described below.

The workstation 1 is preferably an imager [3] manufactured by Cytex, the input scanner 2 is SG608 manufactured by Dainippon Screen Co., Ltd., and the input scanner 3 is suitable. Is preferably EARAY manufactured by Cytex.

Next, a method for manufacturing the precision parallel plate will be described with reference to FIG. As shown in FIG. 1, first, a document (for example, a cork plate) is prepared (step S1). The surface of the cork board is composed of a set of closed areas having small patterns, and the density of each area is variable and continuously distributed. Then
The resolution is set to 10 lines / mm or more, and the light reflectance of the surface of the input scanner 2 is converted into a voltage or current on the surface of the cork plate, which is AD-converted and read (step S2). The manuscript is displayed on the screen of the workstation 1 and quantizes the continuously distributed density of the closed area and divides the density into areas of several stages. Here, the quantized concentration step is "10
1 "in 10 stages, the first group is 10 to 8 stages, the second group is 7 to 5 stages, the third group is 4 to 3 stages, and the fourth group is 2 to 1 stages. I assume. If necessary, adjacent closed areas may be collected in the same group (step S4).

Then, after grouping into several areas,
The original image displayed on the screen is made endless in the vertical and horizontal directions. That is, the contour line shape of the closed area is corrected so that the closed area shapes of the left end and the right end and the top end and the ground end are fitted to each other (step S5). Lines are incorporated so that adjacent closed regions have mutually different straight lines (step S6). The film in which the lines are incorporated is output from the output scanner (Elay) 3 (step S7). By doing this, for example, as shown in FIG.
As shown in (A), it is possible to create closed area information (for example, a film) that is complicated and is divided into fine closed areas. Processing such as quantization of these densities is performed by calculating a digital amount with an electronic computer.
An original film is created by a stencil (step S8), and a metal plate (for example, copper) is exposed and etched based on the original film to make a plate (step S9) to complete a line plate (step S10). ). Here, the distance between the grooves of the parallel plate is usually 0.1 to 100 μm, and the depth of the grooves is 0.1 to 100 μm.

According to the teaching of topology, it is necessary to have four or more line directions so that the line directions of the closed regions adjacent to each other are always different. Further, in order that the difference in the running direction of the lines is sufficiently visible, it is preferable that the angle between adjacent lines is 5 degrees or more.

Second Embodiment In this embodiment, an information processing apparatus creates a closed area corresponding to an original image, and outputs a film in which each closed area is drawn. Separately, a parallel line is created by an information processing device, a film on which only the parallel line is drawn is output, and the closed area film and the parallel line film are multiple-exposed outside the information processing device to create an original film. This is the case.

FIG. 2 shows a flowchart of the second embodiment of the present invention. As shown in FIG. 2, steps S11 (preparation of original image) to step S15 (endless) are the same steps as in the case of the first embodiment. After the endless operation is completed, as in the case of the first embodiment, four films divided into four groups for each area are output (step S1).
6).

On the other hand, in the workstation 1, lines in different directions are created for each of the adjacent closed areas (step S17), and the lines are output as a line film (step S18).

Multiple exposure is performed by superposing each of the four films and a line film in different directions,
Create an original film with lines attached (step S
19). Next, an original plate having the size of a cylinder to which the parallel line plate is to be attached is prepared by a stencil (step S20), and a metal plate (for example, copper) is subjected to plate making processing such as exposure and etching (step S21) to form the line plate Complete (step S2
2).

In the above embodiment, the closed area is formed according to the density difference of the original (cork plate).
The closed region may be formed according to the measured values of various original image information such as hue, brightness, luminance, reflectance, gloss, and saturation of the original.

Further, as the manuscript to be used, in addition to objects such as a cork board and a granite board, a photograph or a picture of a landscape or the like may be used. Further, the gradation may be continuous or discrete. However, at least two types of density (or hue etc.)
Must have

Here, the material for forming the plate is copper,
In addition to metals such as iron, synthetic resins can also be used. As a method of forming the linear grooves on the plate, in addition to the photo-etching method as in the first and second embodiments, the material for the plate is cut with a laser beam such as a CO 2 laser or the like, or ,
A method of exposing a photosensitive resin to a linear pattern and developing it may be used. The plate made by the present invention is used as an embossing plate to form a linear groove by heating and pressing against a thermoplastic resin, or as a printing plate, for example, a method such as gravure printing. Thus, a line-shaped ink pattern may be formed on the printing object (paper, resin film, etc.).

Further, the parallel line used in the present invention may be composed of a group of parallel straight lines or a group of parallel curved lines such as a sine wave, that is, a group of parallel curved lines.

[0024]

As described above, according to the present invention, since the closed area is formed based on the original image information of the original image, a fine and complicated mask shape can be created.

[Brief description of drawings]

FIG. 1 is a flowchart of a first embodiment.

FIG. 2 is a flowchart of a second embodiment.

FIG. 3A is a diagram of an example of a closed region created according to the present invention, and FIG. 3B is a system configuration diagram of an information processing apparatus used in the present invention.

FIG. 4A is a diagram showing a conventional handwritten manuscript,
(B) is a mask original plate in which a predetermined area is selected.

FIG. 5A is a diagram showing a conventional multiple-exposed film, and FIG. 5B is a film in which lines are drawn.

[Explanation of symbols]

 1 ... workstation 2 ... input scanner 3 ... output scanner

Claims (1)

Claim: What is claimed is: 1. A first step of creating closed area information for forming a closed area for each predetermined value portion of measured values of original image information obtained from a document, and adjacent to each other based on the closed area information. A second step of creating line information for forming lines with different angles in the closed area, and a third step of creating a film for line plate exposure based on the closed area information and the line information; And a fourth step of engraving parallel lines having different angles in the adjacent closed regions of the metal according to the above.