JPS6148417B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly relates to a method of randomly controlling selection among various pixels and their positions, and directly making a plate of a group of pixels.

In addition to paper, printing can also be used for interior and exterior building materials, clothing,
The printing field is expanding further, including plastic molded products. With the diversification, new and diverse patterns are required for the aforementioned objects. Among these demands, conventional methods for producing random patterns include manual methods that require a lot of time and effort and rely on the brain and skill of the designer, methods using camera operations and photo repeaters by skilled workers,
There are also methods using automatic drafting machines and XY plotters. However, these methods are difficult to realize or are limited to the production of a partial pattern. In other words, with manual methods, there is a limit to randomness, with camera operation methods, which are created through a lens, it is difficult to create complex patterns, and with methods using automatic drawing machines, etc., it is limited to line drawing patterns, and patterns with areas are difficult to create. above is impossible, etc.
There were various inconveniences.

Therefore, an object of the present invention is to provide a method that allows direct printing of random patterns easily and freely, which has been difficult or impossible using conventional methods such as manual work, camera operation, photo repeaters, automatic drafting machines, and XY plotters. It is to provide.

According to the present invention, the object is to provide a direct plate making method, which includes a device for selecting a plurality of pixels, a control device for the same, a device for determining the position of the pixels in the X and Y directions, and a control device for the same. , is characterized by making a plate with a random pattern in a random position, which is composed of a random number generator that gives a random control signal to each of the control devices described above, a device that controls irregularity of the random number, and a plate making device. This can be achieved by using a random pattern direct plate making method.

Embodiments of the present invention will be described in detail below with reference to the drawings.

This embodiment shows an embodiment in which the present invention is applied to the case where a plurality of pixels are directly made into a plate using an engraving needle or a light emitting element such as a laser or an LED. In Figure 1, manuscript 1, such as handwritten or printed material,
The pixel images at 1' and 1'' are converted into analog signals by a photoelectric converter 2 using, for example, a vidicon camera, and further converted into digital signals by an A/D converter 3.The converted signals are sent to the original 1,
They are registered as pixel memories 4, 4', 4'' which correspond 1:1 to the pixel images at 1', 1''. The system controller 5 drives the random number control unit 6 that controls the uniformity representing the irregularity of the random numbers, the repetition period, the variables of the random numbers, etc., and selects the type of random numbers appropriate for the pattern to be created. Then, the random number generator 7 is driven accordingly to generate random numbers with controlled irregularities. The generated random number is input to the pixel selection control section 8, and the control section 8 sends a control signal for pixel memory selection to the pixel selection section 9. The selection unit 9 randomly selects a corresponding pixel from the pixel memories 4, 4', 4''.
In order to determine the XY corresponding position of the selected pixel, the random number controller 6 is again driven to select the type of random number, and the random number generator 7 is driven to generate a random number. The generated random numbers are input to the X-direction position control section 10 and the Y-direction position control section 11.
Then, a control signal for the position according to the random number is sent to the X-direction position determination unit 12 and the Y-direction position determination unit 13, such as performing calculations to avoid overlapping with previously determined pixel positions, and In sections 12 and 13, the corresponding position is determined at random. The pixels whose positions to be plate-made have been determined are temporarily stored in the pixel storage section 14 by the system controller 5. The system controller 5 instructs a series of similar operations for a predetermined number of operations, and after completing the repeated operations, the pixel order switching unit 15 instructs the pixel order switching unit 15 to switch the order of all pixels stored in the pixel storage unit 14.
instruct. The exchanging unit 15 exchanges the order of positions so that pixels can be efficiently made during plate making.

The positions of the pixels whose order has been changed are transferred to the pixel signal transmission unit 1.
Further, corresponding specific pixel information is input from the pixel selection section 9 to the pixel signal transmission section 16 in correspondence with the selected pixel. Pixel signal transmission section 1
Since 6 is a digital signal, the D/A converter 17
is converted back to an analog signal by the output adjustment circuit 1.
8 to an output head 19 consisting of an engraving needle or a light emitting element such as a laser or LED, and drives this. The output head 19 makes a pattern directly on the surface of an original plate 21 placed on a photographic film support copper or a plate cylinder 20 for engraving.

FIG. 2 shows an example of direct plate making when an engraving needle 22 is used as the output head. In the figure, the engraving needle 22 moves in the direction of movement 23 and engraves the surface of the plate cylinder 24 to form grooves 25, thereby directly producing a random pattern.

FIG. 3 shows an example of direct plate making when a light emitting element such as a laser or LED is used in the output head. In the figure, a light emitting element 26 emits light to expose a photographic film 28 on a photographic film support cylinder 27, forming a recorded image 29, and directly printing a random pattern.

As an actual example, FIG. 5 shows an example in which a random pattern was directly printed on a photographic film using the groups of pixel originals 30 to 35 shown in FIG. 4. In this example, there are six pixel originals, and uniform random numbers are used for both the random numbers for pixel selection and the random numbers for pixel position selection, and the randomness is as shown in the figure.

As described above, according to the present invention, a wide variety of random patterns can be easily and freely produced directly, so a wide variety of random patterns can be applied to all types of printed matter, such as securities background patterns, building material patterns, packaging patterns, and fabric patterns. It is possible to obtain products of extremely high industrial value.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a block diagram of the method of the present invention, Figure 2 is an explanatory diagram of direct plate making using an engraving needle, and Figure 3 is an explanatory diagram of direct plate making using an optical method. , 4th
The figure is a plan view of a pixel original, and FIG. 5 is a plan view of a random pattern. 1, 1', 1''...Original, 2...Photoelectric converter, 3
... A/D converter, 4, 4', 4'' ... pixel memory, 5 ... system controller, 6 ... random number control section, 9 ... pixel selection section, 7 ... random number generator, 8
...Pixel selection control section, 12...X direction position determination section, 13...Y direction position determination section, 10...X direction position control section, 11...Y direction position control section, 14...
...Pixel storage unit, 15...Pixel order exchange unit, 16...
...Pixel signal transmission section, 17...D/A converter, 18
...Output adjustment circuit, 19...Output head, 20...
...Print cylinder, 21...Original plate, 22...Engraving needle, 23...
...Engraving needle movement direction, 24...plate cylinder, 25...groove,
26... Light emitting element, 27... Photographic film support cylinder, 28... Photographic film, 29... Recorded image,
30-35...pixel original.

Claims (1)

[Claims] 1. A device that creates a plurality of pixels and selects the plurality of pixels, its control device, and an X where the pixel should be located.
and a device that determines the position in the Y direction, a control device thereof, a random number generator that provides random control signals to each of the control devices, a device that controls the irregularity of the random number, and a plate-making device. A direct plate-making method for random patterns, which is characterized in that a pattern is randomly selected and plate-made at random positions.