JPS5914992A - Color typing of printing system - Google Patents

Abstract

PURPOSE:To provide the titled system capable of simply typing or printing a letter, separate color printing, profile or color photograph, constituted from such a mechanism that paper having thin conductive layers between each color layers and on the surface thereof formed thereto is used and the conductive layers are partially peeled by arc discharge. CONSTITUTION:Paper 1 wherein various color layers 3a-3d are formed on an insulating thin plate 2 and thin conductive layers 4a-4d are formed between each color layers and on the surface thereof is used and each conductive layers are connected to terminals 5a-5d. Desired discharge voltage is applied between a discharge electrode 7 of which the leading end part is processed into a sharp shape and the conductive layers to burn (scatter) the selected conductive layer by arc discharge and the color layer directly thereunder is exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a new color printing method for performing multicolor printing on printing paper, and paper used therefor.

Various multi-color printing methods have been proposed and put into practice, but they involve placing a wrapper such as a ribbon between the print head and the paper, or placing a large number of heads for each color. These are troublesome to handle, difficult to perform multicolor printing with high resolution, and unsuitable for printing images.

Recently, methods and apparatus have been proposed for electrically printing television images in color on paper. This is yellow, magenta,
Using four special color sheets of four colors, cyan and black, these color sheets are layered one after another on printing paper and thermally transferred using a thermal head with many tiny heating elements. However, this method requires four color sheets in addition to the printing paper, and these four sheets are printed one after another.
Since thermal transfer has to be performed, the process is extremely complicated and the printing time is long, and the set of four color sheets is disposable, which is economically disadvantageous.

The present invention proposes a new method that can solve all the drawbacks of the various methods described above.The structure is such that at least two color layers are formed on an insulating thin plate, and a thin layer is formed between each color layer and on the surface. Using paper on which a conductive layer is formed, at least one minute discharge electrode is arranged close to the surface of the paper, and between the electrode and any one or more of the conductive layers. It is characterized by a method in which a discharge voltage is selectively applied, the conductive layer is partially peeled off by the discharge, and the discharge electrode and the paper are moved relatively to perform printing in multiple colors. In addition, the paper used in the method of the present invention includes an insulating thin plate, a plurality of mutually different thin color layers, a conductive thin layer formed between each color layer and on the surface, and an external conductive layer electrically connected to each conductive thin layer. It is characterized by consisting of several terminals that can be connected to a power source.

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the present invention, in which numeral 1 is a sheet of paper that plays an important role. The cross section of this paper is shown in Figure 2.
As shown in the plan view in FIG. 3, there are four thin colored layers on the insulating thin plate 2, in order from the bottom: a black layer 3a, a single yellow layer 3b,
A magenta layer 3c and a cyan layer 3d are formed, and thin conductive layers 4a, 4b, 4c1 are formed between each color layer and on the surface.
It has a laminated structure in which 4d is formed. Further, each of the conductive layers has terminals 5a, 5b, which are insulated from each other.
Connected to 5c and 5d. Reference numeral 6 indicates an effective area, and this portion coincides with the conductive layer 4d, and this conductive layer is colored close to white, such as white or silver. The paper may be in the form of a sheet as shown in FIG. 3, but is not limited to this, and may be in the form of a roll as shown in FIG. 4, for example. In this case, it is convenient to arrange the terminals 5a, 5b, 5c, and 5d in a band shape along both sides of the paper as shown in the figure.

4- Returning to FIG. 1, 7 is one or more discharge electrodes, the tip of which is sharpened into a needle shape, and the paper 1
It is arranged close to the surface conductive layer 4d. 8 is a discharge power source, one end of which is connected to the discharge electrode 7 via an on-off switch circuit 9, and the other end connected to the conductive H4a, 4b, 4c, 4 via a selection switch 10.
d to terminals 5a, 5b, 5c, and 5d. A control circuit 11 controls the on-off switch circuit 9 and the selection switch 10 to provide a desired discharge voltage. That is, the control circuit 11 selects the selection switch 10.
to select the conductive layer to be connected, and at the same time turn on the switch circuit 9 to transfer the output of the electric current to the discharge electrode 7 and one or more of the conductive layers 4a, 4b, 4c, 4d. Apply. As a result, a minute arc discharge occurs between the two, and the layers from the surface portion to the selected conductive layer are burnt out (scattering), thereby exposing the color layer immediately below the conductive layer.

Next, how the desired color layer is exposed by this discharge will be explained using FIGS. 5 to 9. FIG. 5 shows the case where the cyan layer is exposed, and the control circuit 11 is connected to the selection switch 10.
is controlled so that the power source 8 is connected between the discharge electrode 7 and the conductive layer 4d. At the same time, the switch circuit 9 is controlled to be turned on and a discharge voltage is applied. As a result, an arc discharge occurs between the electrode 7 and the conductive layer/1d, and the conductive layer 4d is burnt out (scattering) due to the charged particle impact at that time.
do. As a result, as shown in FIG. 6, a minute hole 12 is formed in the conductive layer 4d, and the color R3d underneath is exposed. Therefore, when the switch circuit 9 is turned off or left on and the discharge electrode 7 or the paper 1 is moved, the position where the arc discharge occurs changes stepwise or continuously, and printing or printing in cyan occurs. Can be done. In this case, if the discharge energy, that is, the discharge current is made variable, the size of the burnout hole 12 can be controlled depending on the magnitude of the energy, which is effective for printing figures and the like.

If it is desired to obtain a different color layer, the selection switch 10 is controlled so that, for example, the conductive layer 4b is connected to the power source 8 as shown in FIG. Then, when a predetermined discharge voltage is applied between the layer 4b and the electrode 7, an arc discharge occurs between the layer 4b and the electrode 7, and various layers existing between the layers <4d, 3d,
4c, 3c) and the conductive layer 4b are burned out by the energy, and a hole 13 is formed. (FIG. 8) Therefore, the yellow layer 3b appears. In order to ensure that discharge occurs smoothly when such lower layers are exposed, as shown in FIG. 9, conductive layers 4d, 4. When C14b is commonly connected and connected to the power supply 8, discharge can occur at a relatively low voltage. Further, the connection to the conductive layer may be made in the order of 4d→4C→4h with a temporal shift.

FIG. 10 shows another embodiment, in which a large number of discharge electrodes (7a
, 7b, ...7n).

These electrodes are arranged in a line perpendicular to the longitudinal direction of the paper, and the paper 1 is moved stepwise or continuously in a direction perpendicular to this row (in the direction of the arrow in the figure). Each electrode 7a,
7b,...7n are on-off switch circuits 9
each switching cord 9a, 9b.

... is connected to the power supply 8 via 9n. These switching elements are controlled by a control circuit 11, and a discharge voltage is applied only to the desired electrodes.

Thus, at a specific relative position between the discharge electrode and the paper this winter, the control circuit 11 controls the selection switch 10 so that only the specific conductive layer 4d is connected to the power source 8 via the terminal 5d. Then, the switching elements 9a, 9 of the on-off switch 9 are activated by signals from various devices.
b, ...only a predetermined one among 9n (for example, 9
When b) is turned on, a discharge voltage is applied only to the selected electrode 7b, holes 12 as shown in FIG. 6 are formed on the paper 1, and cyan color is displayed. Next, the control circuit 11 connects the switch 10 to the terminal 5c, and then the on-off switch circuit 9 is controlled as before. Further, the switch 10 is connected to the terminals 5b, 5a, and the discharge electrodes 7a, 7b, . . . , 7n are selected at that time. When printing is completed at a specific position on the paper in this way,
The paper is fed in small steps and the same operation as described above is performed at the new paper position. When the printing as shown in 8- above is completed over a predetermined length, characters, symbols, profiles, or images in color are printed on the paper.

FIG. 11 shows still another embodiment, and this example shows an example that can be used when color printing a video signal or the like. In the figure, 7a Y, 7a M, and 7a C are a set of three discharge electrodes, 7aY is for yellow, 7cM is for magenta, and 7aC is for cyan. Configure.

Therefore, although not shown in the figure, the discharge electrodes forming these sets are arranged in a row in a number corresponding to the number of pixels in the horizontal direction.
The electrodes are arranged like the electrode arrangement shown in Figure 0. Each electrode 7a Y
, 7a M17a C are switching elements 9a (9
aY, 9cM, and 9aC) is connected to the power source 8. The number of these switching elements is the same as the number of discharge electrodes. The control circuit 11 controls each element and the selection switch 10 as in the case of FIG. 10, and also controls the power supply 8.
The discharge energy (discharge current) is also controlled according to the image signal.

The operation of such a configuration will be explained using FIGS. 12 to 16.

Figure 12 shows clock pulses for paper or electrode feeding;
Each part will work in sync with this.

13(a), (b>, and (C) show the control pulses of the switching elements 9aY, 9aM, and 9aC, which are turned on in sequence. FIG. 14 shows the control pulses of the selection switch 10. signals, (a), (b), (c
) are terminals 5b in FIG. 3, respectively.

It does not show the connection status with 5c and 5d. Furthermore, FIG. 15 shows the discharge energy required to display neutral colors by varying the size of each burnout hole. FIG. 16 shows a comparison of the sizes of each color in each pixel finally obtained.

First, in the case of FIG. 13(a) when the switching element 9aY is on, the selection switch 10 is set to 5b, 5c,
Connect the 5d to the power supply at the same time. When the discharge energy shown in FIG. 15 is applied, discharge occurs between the electrode 7aY and the conductive layers 4d and 4C% 4b, and a yellow colored layer shown as Y in FIG. 16 is formed on the paper. . Next, 98
When M is turned on, only (b) and (c) in FIG. 14 are turned on, that is, the connection to 5b is turned off, and 5d and 5c are connected to the power source. Then, a discharge having a magnitude corresponding to the energy shown in FIG. 15 occurs between the electrode 78M and the layers 4d and 4C, and a magenta colored layer shown in FIG. 16M is generated. Furthermore, in FIG. 13(C), only the terminal 5d is connected to the N source, and discharge occurs only between the electrode 7aC and the layer 4d, producing a cyan color layer shown in FIG. 16C. Color layer Y, M, C
The relationship between the sizes of is determined by the discharge energy shown in FIG. 15, and in the end, something like the one shown in FIG. 16 is obtained, and intermediate colors can be printed arbitrarily.

Incidentally, although black was not explained above, when the surface conductive layer 4d is made black or when the paper shown in FIG. 2 is used, all the electrodes 7aY.

A voltage may be applied between 7a M, 7a C and the conductive layer 4a.

As described in detail above, in the present invention, a paper is used in which at least two color layers are formed, and a thin conductive layer is formed between each color layer and on the surface. At least one discharge electrode is placed and a discharge voltage is applied between this and the selected conductive layer to expose the desired color layer by arc discharge, so printing, color printing, profiles, etc. It is possible to provide a printing method that can extremely easily print color photographs and the like and is also advantageous in terms of cost.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a basic embodiment of the method of the present invention, Fig. 2 is a sectional view showing an example of paper used in the invention, Fig. 3 is a plan view thereof, and Fig. 4 is another example of paper. 5 to 9 are diagrams for explaining the method of the present invention, FIG. 10 is a diagram showing an example of the method of the present invention, and FIG. 11 is a diagram showing still another embodiment. 12 to 16 are explanatory diagrams of the operation of FIG. 11. 1: Paper, 2: Insulating thin plate, 3a, 3b, 3c, 3d: Color layer, 4a, 4b, 4c, 4d: Conductive layer, 12-5a, 5b, 5c, 5d: Terminal 6: Effective area, 7: discharge electrode, 8: discharge power supply, 9: on-off switch circuit, 10: selection switch, 11: control circuit. Patent Applicant JEOL Ltd. Representative Ito-ku Ward LOQ m Book Ward

Claims (1)

[Claims] 1. Using paper in which at least two color layers are formed on an insulating thin plate, and a conductive layer is formed between each color layer and on the surface, minute At least one discharge electrode is arranged, a discharge voltage is selectively applied between the electrode and any one or more of the conductive layers, and the conductive layer is partially peeled off by the discharge. At the same time, the discharge electrode and paper are moved relative to each other to print in multiple colors. 2. The color printing or printing method according to claim 1, wherein a plurality of the discharge electrodes are prepared, and the voltage applied between each electrode and the conductive layer is turned on and off according to a desired signal. . 3. The discharge electrode is composed of a large number of electrodes, and is arranged in a direction perpendicular to the direction of relative movement with the paper.
Color printing or printing method described in Section 2 or Section 2. 4. The color printing or printing method according to claim 2 or 3, wherein a plurality of the discharge electrodes are arranged in sets, and each set has a role of exposing a different specific color layer. . 5. The color printing or printing method according to claim 4, wherein the discharge energy applied to each discharge electrode of the set is controlled to display a desired intermediate color. 6. An insulating thin plate, a plurality of mutually different thin color layers, a conductive thin layer formed between and on the surface of each color layer, and a plurality of pieces electrically connected to each conductive thin layer and connectable to an external power source. A paper sheet for use in carrying out the method according to claim 1, comprising a terminal. 7. Claim 6, wherein the insulating thin layer is in the form of a sheet.
Paper with section description. 8. Claim 6, wherein the insulating thin layer is in the form of a roll.
Paper with section description. 9. The paper according to any one of claims 6 to 8, wherein the plurality of color layers are black, cyan, magenta, and yellow. 10. The paper according to any one of claims 6 to 9, wherein the conductive layer on the surface is white or a color similar to white.