JPS59127796A - Electric discharge recording sheet - Google Patents

Abstract

PURPOSE:To print clear and easily visible images free from electrode scanning line marks, by a method wherein a colored matted layer for diffuse reflection of rays is provided on one side of a transparent plastic sheet material, and a vapor- deposited film is provided thereon. CONSTITUTION:The colored matted layer 4 for diffuse reflection of rays is provided on one side of the transparent plastic sheet material by extrusion lamination, then the vapor-deposited film 13 is provided thereon, and further an extremely thin layer 14 for protecting the surface of the layer 13 and conditioning an electric discharge is provided on the surface of the layer 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge recording sheet, and more specifically to a discharge recording sheet in which a rough vapor-deposited film is formed on the sheet for use in non-impact recording such as discharge.

A non-impact recording method using electric discharge etc. was developed by Heberly et al. in 1970.
It is described in the US patent specification dated December 22nd,
The recording paper used in this type of recording method is either paper, insulating sheet material such as polyethylene terephthalate or polypropylene on which filler particles, colored particles, and a binder are coated, or black matte paper as shown in Figure 1. Generally, the vapor-deposited film 2 is formed directly on chemical paper 1, and in the former case, it is possible to evenly nucleate filler particles with a large particle size and colored particles with a small particle size onto the sheet member with a binder. However, in the latter case, it is necessary to treat the paper to prevent the dispersion of structural water during vapor deposition, and the surface of the discharge point becomes fluffy, resulting in a grayish-black color. As you can see, it has the drawbacks of being time-consuming to manufacture and difficult to mass produce, resulting in high costs.

Furthermore, synthetic resin films are generally weak, and when torn from a desired location, they run away in the tearing direction and wrinkle, making it difficult to cut.

In addition, synthetic resin films are generally stretched to improve their physical properties.
It has been designed to improve transparency, barrier properties, and heat shrinkability, and those that have undergone biaxial stretching are more difficult to tear than those that have not been stretched, and will not tear even with a slight cut. Even if it is torn, the direction of tearing is not constant because it is stretched evenly along both axes. In particular, synthetic resin films with high mechanical stability and dimensional stability, such as polyester and polyolefin, cannot be cut by hand unless they are cut using a knife.

In addition, with conventional discharge recording sheets, the lower colored layer is exposed due to scratches caused by the discharge printing electrode needles and the destruction of the vapor deposited film due to residual heat on the needle heads due to discharge, resulting in traces of the electrode scanning lines of the prints, making it difficult to see the dot prints. There are also drawbacks, such as dot printing, which cannot be clearly printed because the discharge occurs at the outer periphery of the discharge printing electrode needle or is localized in one part, resulting in unclear printing.

This invention aims to provide a 7-lint that has clear printing, does not leave traces of electrode scanning lines, discharges dots on the average, and is easy to see without bias, and is the first feature of this invention. In this method, a colored light diffuse reflection matte layer is formed on one side of a transparent plastic sheet material by extrusion lamination or the like, and a vapor deposition film is formed on the outer surface of the matte layer, and the vapor deposition film is formed on the outer surface of the matte layer. An object of the present invention is to provide a discharge recording sheet characterized in that an extremely thin surface protection/discharge optimization layer is formed on the surface of the layer.

A second feature of the present invention is that a colored matte layer for diffusely reflecting light is formed on one surface of a transparent plastic sheet material by extrusion lamination or the like, and a vapor-deposited film is formed on the outer surface of the matte layer, and Another object of the present invention is to provide a discharge recording sheet, characterized in that paper is adhered to the other surface of the sheet material, and an extremely thin surface protection/discharge optimization layer is further formed on the surface of the vapor deposition layer.

An embodiment of the present invention shown in the drawings will be described in detail below.

As shown in FIG. 2, the plastic sheet material 11 used in the discharge recording sheet of the present invention has a colored light diffused reflection mat layer 4 made of plastic or the like by extrusion lamination on the negative side.
is formed, and the rough surface vapor deposited film 13 is formed through the fine rough surface 1i11A.
It has a configuration in which

The vapor-deposited film 13 of the discharge recording sheet 10 of the present invention is formed by vapor-depositing a metal such as At, an alloy, a mixture, etc. by a normal vacuum deposition method. For example, a continuous vacuum evaporation device is equipped with a vacuum evaporation chamber in the center of two decompression chambers at the front and back, and inside the evaporation chamber there is a heater that can roll and a crucible that guides the evaporated metal to the film surface from the outside. Guide plate 75;
The vacuum deposition chamber is, for example, 10-"I'o
It is designed to maintain a degree of vacuum of approximately rr, and one rhinoceros is placed in the vacuum chamber under vacuum.
+ Cu + Sn t Zn.

Single metal Nl such as Cr, Ni, Se, Ti (:r, N+ Fe+Fe-Co, , Au-
Alloys such as Ag-Cu are vapor-deposited by heating them with a heater made of heat-resistant nichrome wire and evaporating them.

Figure 3 shows a synthetic resin film 11 made using the process described above.
This is an enlarged cross-sectional view when a fine rough surface layer 11A made of plastic is formed on one surface by extrusion lamination or the like.
As shown in the figure, the metal vapor deposited films 13 overlap and the fine rough surface layer 1
The metal vapor deposited film 1 is formed so as to follow the fine irregularities formed on 1A.
Since fine irregularities are also formed on the surface of the metal 30, the light incident on the surface of the metal vapor deposited layer is diffusely reflected extremely effectively even in a state where the metal vapor deposited layer is in a state of separation, so that the surface of the vapor deposited film exhibits a pure white color.

As shown in FIGS. 1 and 2, this discharge recording sheet 10 is similar to the conventional discharge recording paper, with the vapor deposited film 13 facing up and the discharge electrodes 3 scanned in the width direction of the paper, and dotted in the shape of dots. By applying a high voltage through the electrodes, the vapor deposited film 1375 is destroyed, and the character shape is seen through the transparent sheet 11, making the character shape visible.

The surface of the non-destructive part is finely rough, so it diffusely reflects external light and turns white, making the letter-shaped part very easy to see.

In this invention, epoxy resin silicone-1fc is formed on the surface of the vapor deposited film 13 of the discharge recording sheet 10 by spraying or sputtering to form an extremely thin layer of epoxy resin silicon-1fc, or by coating with a roller or the like. An extremely thin surface protection/discharge optimization layer 14 with a finely roughened surface is formed along the finely roughened surface.

As a method for forming this surface protection/discharge adaptation layer 14, for example, there is a solvent type coating, in which a coating resin is dissolved in an organic solvent or water, and a plasticizer, filler, etc. are added as necessary. The solution is coated on the surface of the deposited film. Coating methods include gravure coating, reverse roll coating, dip coating, doctor blade coating, and air knife coating.

If necessary, a so-called extrusion method may be used in which the molten material is extruded through a slit nozzle and coated.

Next, as shown in FIG. 5(a), the discharge recording sheet (10A) which does not have the surface protection/discharge optimization layer 14 has drawbacks such as the electrode scanning line traces 17 of the print 15 that are difficult to see, and the printed dots are As shown in FIG. 5(b), the discharge may occur on the outer periphery of the dot 16, or the dots may be localized in one part, making it impossible to print clearly, resulting in blurring as shown in FIG. 5(c). As shown in FIG. 6(a), this invention
5 is clear, there is no trace of the electrode scanning line, and as shown in Fig. 6(b), the dots 16 are discharged on the average, so there is no bias, so the printing is as shown in Fig. 6(C). 15 is clear and easy to see without traces of electrode scanning lines.

As shown in FIGS. 1 and 2, this discharge recording sheet 10 is similar to the conventional discharge recording paper, with the vapor deposited film 13 facing upward and the discharge electrodes 3 being scanned in the width direction of the sheet, the electrodes are shaped like dots. By applying a high voltage, the vapor deposited film 13 is destroyed, and a character shape is displayed on the plastic sheet 11.

That is, when a colored plastic sheet material is used as the plastic sheet material and paper 12 is pasted on the other side of the sheet material, the character shape can be seen through the colored plastic sheet and the character shape becomes visible.

When the plastic sheet material is a transparent plastic sheet material and colored paper is pasted on the other side of the sheet material, the recorded character portions are transparently colored, giving the impression of deep carvings.

When the plastic sheet material is a colored transparent plastic sheet material, a colored layer is provided on the other side of the sheet material, and paper 12 is further attached, the color can be mixed and synthesized with the color of the colored layer.

In addition, even when the plastic sheet material is a transparent plastic sheet material and transparent or colorless paper is pasted on the other side of the sheet material, the light incident on the metal vapor deposition surface is diffusely reflected extremely effectively, so the vapor deposition film surface exhibits pure white color.

As described above, the first effect of the present invention is that a colored light diffuse reflection matte layer is formed on one surface of a transparent plastic sheet material by extrusion lamination or the like, and a vapor deposited film is formed on the outer surface of the matte layer. Therefore, the surface of the vapor deposited layer is pure white and does not sparkle, and the recorded character part is transparently colored, giving it a deep carved feel.It is very easy to see, and there is no need to matte the surface, so it can be patterned. In addition, since an ultra-thin surface protection and discharge optimization layer is formed on the surface of the vapor deposited layer, the printing is clear, there are no traces of electrode scanning lines, and there is no bias because the dots discharge evenly. It has the advantage of being able to produce clear, easy-to-read prints without traces of electrode scanning lines.

In addition to the first effect, the second effect of the present invention is that one surface of the plastic sheet material is matted into a finely roughened surface by physical or chemical means, and the matted outer surface of the sheet material is A vapor-deposited film was formed on the vapor-deposited layer to form a light-diffusion-reflecting vapor-deposited layer, paper was attached to the other side of the sheet material, and an extremely thin surface protection/discharge optimization layer was formed on the surface of the vapor-deposited layer. The plastic sheet base has moderate rigidity even if it is an extremely thin plastic film, and is easy to tear.The surface of the vapor deposited layer is pure white and does not sparkle, and the recording character part is transparent and has deep carvings. In addition, this invention does not require a resin coating treatment, which is a pre-process for metallized paper (a process to prevent the release of moisture and gas in the paper), and is not hygroscopic like paper, making it easy to see. There is no curling phenomenon and no insulation deterioration. Since a resin sheet can be made thinner than paper, the winding diameter can be made smaller, which is extremely advantageous for vacuum chambers that require a certain degree of ease, such as batch deposition. As a result, there is no quality deterioration of the deposited film due to acid or alkali contained in the paper, or an accompanying increase in resistance, and there is no bad odor emitted during discharge recording, which is a common problem with vapor deposited materials, making it suitable for mass production, and depending on the application. There are effects such as being able to obtain appropriate and inexpensive discharge recording sheets, such as being able to select paper of any thickness.

Furthermore, since paper is pasted on the non-evaporated surface of the discharge recording sheet, the sheet as a whole becomes strong, and when it is torn from a desired point, it can be easily cut without running away in the tearing direction and causing wrinkles. It can be easily torn from a desired point in a predetermined direction, and furthermore, the present invention does not require a resin coating treatment, which is a pre-process for vapor-deposited paper (a process to prevent the release of moisture and gas in the paper), and it can be torn like paper. It is not hygroscopic and therefore does not cause curling or deteriorate insulation. In addition, since resin sheets can be made thinner than paper, the winding diameter can be made smaller, which is advantageous for vacuum chambers with a fixed capacity such as the Tsuchi type vapor deposition. There is no accompanying increase in resistance, no bad odor is emitted during discharge recording, which is a common problem with vapor-deposited paper, and it is suitable for mass productivity, and has the advantage of producing inexpensive discharge recording sheets.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional discharge recording paper, FIG. 2 is an enlarged sectional view of the sheet before the formation of a vapor deposited film, FIG. 3 is a sectional view of a discharge recording sheet which is an embodiment of the present invention, and FIG. 4 is an enlarged sectional view of the discharge recording sheet of the present invention, FIG. 5(a) is a plan view of a conventional discharge recording sheet with dots printed on it, and FIG. , FIG. 5(C) is an enlarged view of the characters printed on the conventional discharge recording sheet, FIG. 6(a) is a plan view of the characters printed on the discharge recording sheet according to the present invention, and FIG. FIG. 6(C) is an enlarged view of dots printed on the discharge recording sheet according to the invention. FIG. 6(C) is an enlarged view of the dots printed on the discharge recording sheet according to the invention. 4...Light ray diffused reflection matting part, 10...Discharge recording sheet), 11...Plastic sheet material, 12...Paper, 13...Fine rough surface vapor deposited film, 14...Surface protection and discharge optimization layer, 15...printing, 16...dot, 17
... Electrode scanning line trace. Patent applicant: Sadato Ito, Masato Miyo, Harutoshi Dan Rokube
Dan Fan Zhi Figure 1 31! ;2 to stone 3v;3 Fig. 1 Fig. 4 Fig. 5 (α) ) Fig. 6 U0 Fig. 5 <C> Fig. 6 (C)

Claims (2)

[Claims] (1) A colored matte layer with diffused reflection of light is formed on one surface of a transparent plastic sheet material by extrusion lamination, a vapor deposited film is formed on the outer surface of the matte layer, and an ultra-thin surface coating is applied to the surface of the vapor deposited film. 1. A discharge recording sheet characterized by forming an accent-discharge suitability layer. (2) A discharge recording sheet as set forth in the first claim, characterized in that paper is attached to the sheet material on the opposite side of the vapor-deposited surface of the sheet material.