JPS60239241A - Recorder - Google Patents

Abstract

PURPOSE:To enable the recording with a high resolution by building up an electrode head with a slender electric conductor and a fixing material containing hexagonal boron nitride for fixing it and talc in a printer using an electrospark tearing recording paper. CONSTITUTION:A writing electrode head 25 is built by fitting a slender electric conductor, for example, a covered copper wire 26 into a groove on a molding 27 comprising hexagonal boron nitride, talc and an epoxy resin. The tip of the electric conductor 26 of the electrode head 25 is moved in the direction of the arrow being pressed on an electrospark tearing recording paper 21 comprising an deposited aluminum layer 22, a black layer 23 and a base paper 24 while an electrical signal 28 is conducted between the recording paper 21 and the electric conductor 26 to tear the deposited aluminum layer 22 and expose the black layer 23 to record. Thus, a high-resolution recording can be obtained with an inexpensive construction with an excellent printing quality without damaging the electrospark tearing recording paper.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording device that records electrical signals as visible images on a recording medium.

Conventional configurations and their problems In recent years, various terminals have been required for office automation. Among them, there is a great demand for recording devices that convert electrical signals into visible images, so-called printers.
2. Description of the Related Art Conventionally, recording devices have been manufactured using various methods.

A recording device using electrical discharge breakdown recording paper consists of a vapor-deposited aluminum layer, a black layer, and a base paper layer.A voltage-applied electrode is brought into contact with the vapor-deposited aluminum layer of the electrical discharge breakdown recording paper, and the contact area is heated or the vapor-deposited aluminum layer is destroyed by electrical discharge. Recording is performed by removing the aluminum and exposing the underlying black layer. Therefore, in order to perform good writing, the write electrode is made so that the electrode needle 11 is exposed to ensure reliable contact as shown in FIG. 1(A).

(12 is the fixed part, 13 is the lead) Pull out the electrode needle (
If the electrode needle 14 is not allowed to protrude, as shown in Figure 1 (B),
The area around the disk is destroyed, and dust particles and stains that occur during recording damage the insulation between the electrodes, making it impossible to write properly.

For this reason, the protruding electrode needle must be made of strong material, and thick and hard material must be used.
Multi-needle printing was difficult and a recording device capable of high-resolution recording could not be obtained.

A recording device using a discharge rupture transfer recording medium is constructed by grounding the evaporated aluminum layer of the discharge rupture transfer recording medium, which consists of a evaporation aluminum layer, a base film, and a colored transfer layer, and bringing an electrode to which a voltage is applied to the evaporation aluminum layer into contact. After removing the vapor-deposited aluminum layer by heating or discharging the contact area, place a recording material (paper, etc.) on the colored transfer layer of the discharge-destruction transfer recording medium, and shine light from the side with the vapor-deposited aluminum layer to remove the vapor-deposited aluminum layer. The colored transfer layer under the destroyed portion is melted and transferred onto the recording medium for recording. Therefore, in order to write well, the evaporated aluminum layer must be well written. That is, the electrode head required for this device is similar to that of the recording device using the discharge rupture recording paper described above.

A recording device using electrolytic recording paper consists of a recording layer (a layer coated with a mixture of polymeric tetrazolium salt, a reducing agent, and a conductive agent) and a base paper, and the recording layer of the electrolytic recording paper is grounded. In this method, an electrode to which WEE has been applied is brought into contact with the electrode, and an electrolytic/reduction reaction is caused at the contact point to perform recording. This recording device attaches electrolytic recording paper to a drum, and records by pressing electrode needles against the electrolytic recording paper while rotating the drum. To obtain high resolution, the electrode needles must be made thinner, but In addition to the needles being severely worn out, the electrode needles had to be made of thick and hard material because they were pressed against the electrolytic recording paper, making it impossible to obtain a recording device capable of high-resolution recording using multiple needles.

A recording device using electrically conductive thermal recording paper has a coloring layer.

The color-forming layer of an electrically conductive thermosensitive recording paper consisting of a conductive layer and a base paper is grounded, and an electrode to which a voltage is applied is brought into contact with the color-forming layer, and the color-forming layer is melted at the contact point to perform color recording. This recording device records by pressing the electrode needle against the current-carrying heat-sensitive recording paper.In order to obtain high resolution, the electrode needle must be made thin, but in order to press the electrode needle against the current-carrying heat-sensitive paper, This required the use of thick and hard materials, making it impossible to obtain a recording device capable of high-resolution recording with multiple needles.

In a recording device using an electrically conductive heat generating transfer recording medium, the electrically anisotropic film of the electrically anisotropic film and the electrically conductive low melting layer of the electrically conductive heat generating transfer recording medium is grounded, and a voltage is applied to the electrically anisotropic film. The conductive low-melting layer under the contact portion is softened and transferred onto the recording medium to perform recording. This recording device records by pressing electrode needles against an electrically heated transfer recording medium, and in order to obtain high resolution, the electrode needles must be made thinner.

Since the electrode needles are pressed against the recording medium through energization and heat generation, a thick and hard material must be used for the electrode needles, and a recording device capable of high-resolution recording using multiple needles has not been obtained.

OBJECTS OF THE INVENTION An object of the present invention is to provide an inexpensive recording device that enables high-resolution recording on a recording medium.

DESCRIPTION OF THE INVENTION The recording device of the present invention uses an electrode head comprising an elongated electrical conductor and a fixing material containing hexagonal boron nitride for fixing the electrical conductor.

This device records on the recording medium by applying current between the tip of the elongated electrical conductor and the recording medium, and achieves high-resolution recording and low cost.

DESCRIPTION OF EMBODIMENTS A discharge breakdown recording device using a discharge breakdown recording paper will be described below as an embodiment of the present invention with reference to the drawings.

[Embodiment 1] FIG. 2 is a perspective view of a writing portion of an embodiment of the present invention. In FIG. 2, numeral 21 is a well-known paper called discharge rupture recording paper. This is the deposited aluminum layer 22. Black layer 23. It consists of a base paper 24. Reference numeral 26 designates a writing electrode head (hereinafter referred to as an electrode head) used in the device of the present invention, in which an elongated electrical conductor (for example, a coated copper wire) 26 and a hexagonal electrode are used as fixing materials for fixing the elongated electrical conductor. It consists of a molded body 27 made by mixing and curing crystalline boron nitride, talc, and thermosetting resin (epoxy resin). This electrode head is made by cutting grooves at a pitch of 100 μm with a groove width and groove depth of 60 μm in a molded body 27 containing 30% by weight of talc by heating 30 layers of hexagonal boron nitride, and then coating the grooves. A steel wire 26 (diameter 60 μm) is inserted into it.

The tip of the elongated electrical conductor of the electrode head 26 is moved in the direction of the arrow while pressing against the lip surface (evaporated aluminum layer 22) of the discharge breakdown recording paper. At the same time (while running), an electric signal 28 is applied from the electric signal source between the discharge destruction recording paper 21 and the elongated electric conductor 26, destroying the vapor-deposited aluminum layer 22 and exposing the black layer 23. A pattern corresponding to the image is visualized. In FIG. 2, an electrical signal is applied to only one of the plurality of elongated electrical conductors.

In practice, each electrical signal is applied to each elongated electrical conductor to obtain the desired pattern.

What are the characteristics of the recording device using this electrode head?

■ Printing quality (stability of dot shape after printing 60,000 characters)
is excellent.

■ Can be printed on discharge destruction recording paper without damaging it.

■High resolution recording is possible.

■ It is inexpensive.

etc. These features cannot be obtained with the recording apparatus using the conventional electrode head described above.

[Example 2] The hexagonal boron nitride and talc of the molded body, which is a mixture of hexagonal boron nitride, talc, and thermosetting resin (epoxy resin), which are the fixing materials for the electrode head used in Example 1, were The optimal blending ratio was investigated. Before that, for each of hexagonal boron nitride and talc, the thermosetting resin (epoxy resin)
The content of 0, 10, 20, 30, 40,
50, 60, To.

An electrode head using each of the molded bodies cured at 80.90.96% by weight as a fixing material.

Tables 1 and 2 show the results of evaluation by printing on discharge breakdown recording paper using the same apparatus as in Example 1.

(hereinafter referred to as "Kinshiro") In Tables 1 and 2, the printing quality is an evaluation of the stability of the dot shape after 60,000 characters have been printed, as described above. The resistance to dust is the degree of dirt on the tip of the electrode head after printing 50,000 characters.

Hardness is an evaluation of whether printing can be done without damaging the discharge rupture recording paper when printing on the discharge rupture recording paper. The flame retardancy is based on UL Standard 94, and is evaluated using a test piece with a thickness of 1/16 inch. Workability refers to the ease of making a molded body and the ease of machining.

As is clear from Tables 1 and 2, hexagonal boron nitride is effective from 20% by weight, and talc is effective from 30% by weight.
There was an effect from the weight%. On the other hand, when the content of either rhombic boron nitride or talc exceeded 96% by weight, it could not be obtained as a molded body (it would fall apart) and could not be evaluated as an electrode head.

Hexagonal boron nitride is effective as a fixing material for electrodes even if the amount of filling in the thermosetting resin (epoxy resin) is less than that of talc, but hexagonal boron nitride is an expensive material. Therefore, the electrode head becomes expensive. On the other hand, although talc is an inexpensive material, its properties are slightly inferior to those of hexagonal boron nitride. Therefore, by combining hexagonal boron nitride and Merck, we decided to find a blending ratio that would satisfy both properties and cost.

Table 3 shows the overall evaluation after checking the same items as in Tables 1 and 2.

(Hereinafter referred to as gold and white) As is clear from Table 3, if the total amount of hexagonal boron nitride and talc is less than 20% by weight, the area around the electrode will be destroyed by heat during printing, etc., as described in the conventional example. Dust generated during recording adheres to the electrodes, causing deformation and disconnection of the electrodes, making them unusable as electrode heads. Furthermore, when the total amount of hexagonal boron nitride and talc exceeded 96% by weight, a molded body could not be obtained (it would fall apart) and could not be evaluated as an electrode head.

From the above, it is preferable that the fixing material usable as the electrode head of the recording device of the present invention contains hexagonal boron nitride and talc in a total amount of 26 to 90 percent by weight. However, when evaluating an electrode head using a molded body with a hexagonal boron nitride content of less than 5% by weight and a talc content within the above range of 20% by weight or more as a fixing material, as described above, The area around the electrode was destroyed by the heat generated during printing, and dust generated during recording adhered to it, causing deformation and disconnection of the electrode, making it unusable as an electrode head. That is, hexagonal boron nitride has at least 5
It is preferable to use an electrode head in which a molded body containing at least 26% by weight of hexagonal boron nitride and talc and a total amount of 26 to 90% by weight of hexagonal boron nitride and talc is used as the fixing material of the electrode head.

Next, an embodiment of a recording device other than the discharge breakdown recording device according to the present invention will be described.

[Example 3] An example of a recording device other than the discharge breakdown recording device according to the present invention will be described.

FIG. 3 shows a sectional view of the writing portion of the discharge rupture transfer recording device. In FIG. 3, reference numeral 31 denotes a discharge breakdown transfer recording medium, which is composed of a vapor-deposited aluminum layer 32, a base film 337, and a colored transfer layer 34. Then, the electrode head 35 used in the recording apparatus of the present invention and a discharge breakdown transfer recording medium are combined.

The process described in the conventional example enables high-resolution discharge breakdown transfer recording on recording paper.

[Embodiment 4] FIG. 4 shows a sectional view of the writing part of the electrolytic recording device. In FIG. 4, 41 is an electrolytic recording paper, which is a recording layer 42. It consists of a base paper 43. 44 is a drum to which electrolytic recording paper is attached.

By combining the electrode head 46 used in the recording apparatus of the present invention with electrolytic recording paper, it becomes possible to perform high-resolution recording on the electrolytic recording paper through the process described in the conventional example.

[Embodiment 6] FIG. 5 shows a cross-sectional view of the writing portion of an electrically conductive thermosensitive recording device. In FIG. 6, 61 is an electrically conductive heat-sensitive recording paper, which has a coloring layer 62. The conductive layer 53 consists of a base paper 64.

By combining the electrode head 66 used in the recording apparatus of the present invention with a current-carrying heat-sensitive recording paper, high-resolution recording on the current-carrying heat-sensitive paper becomes possible through the process described in the conventional example.

[Embodiment 6] FIG. 6 shows a sectional view of a writing portion of an energized heat transfer recording device. In FIG. 6, reference numeral 61 denotes an electrically heat-generating transfer recording medium, which is an electrically anisotropic film 62. It consists of a conductive low melting layer 63.

By combining the electrode head 66 used in the recording apparatus of the present invention with an energized heat-generating transfer recording medium, high-resolution recording can be performed on the recording medium 64 through the process described in the conventional example. 66
indicates a portion where the conductive low melting layer 63 is melted.

I have talked about some recording devices above.

Discharge destruction recording device, electrolytic recording device 2 energized heat-sensitive recording paper records on the recording medium itself, but in discharge rupture transfer recording device 2 energized heat-sensitive recording paper device, the recording medium itself is just a medium, and the recording medium (normally is transferred onto paper).

In the embodiments, a case has been described in which copper wire is used as the elongated electrical conductor of the electrode head used in the recording device, but the present invention is not limited to copper wire, and other electrical conductors may be used. Examples include nickel, tungsten, molybdenum, nutene, phosphor bronze, iron, and the like. In addition, we will discuss the case where a groove is formed in a molded body made of a hardened mixture of hexagonal boron nitride, talc, and a thermosetting resin (epoxy resin) as a fixing material, and then a long and narrow electrical conductor is fitted into the groove. However, the method is not limited to this method, and any method may be used as long as the electrical conductor formed in a stripe shape is fixed with a fixing material containing hexagonal boron nitride and talc. Also,
It can be easily inferred that an electrode head using a material having properties similar to hexagonal boron nitride or talc as a fixing material can be attached to the recording apparatus of the present invention.

Effects of the Invention As is clear from the above description, the present invention uses an electrode head consisting of an elongated electrical conductor and a fixing material containing hexagonal boron nitride and talc for fixing the electrical conductor. Recording is performed on the recording medium by applying current between the tip of the electrical conductor of the electrode head and the recording medium, so that the area around the long and thin electrical conductor of the electrode head will not be destroyed or dust generated during recording will not adhere to it. The print quality is excellent because the paper is not scratched even if it is pressed against the paper and moved. In addition, conventionally, the life of the protruding electrode needle was determined by the length of the protruding electrode needle, and the higher the resolution, the thinner the electrode needle became. It has been impossible to create an electrode head with high resolution and long life, and a high-resolution recording device has not been obtained. However, the electrode head of the recording device of the present invention has no protruding electrodes, but is buried in the fixing material, so that the electrodes do not protrude. The electrode head can be thin and the length of the electrode can be freely selected, making it possible to create an electrode head with high resolution and long life.
A recording device that enables high-resolution recording can be obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional write electrode head. FIG. 2 is a perspective view of an electrode head according to an embodiment of the present invention. 3 to 6 are perspective views of electrode heads according to other embodiments of the present invention. 11.14... Electrode needle, 12... Resin fixing material 213... Lead, 21... Discharge breakdown recording paper, 31... Discharge breakdown transfer recording medium, 41... Electrolytic recording paper, 61... Current-carrying heat-sensitive recording paper, 61... Electric-carrying heat-generating transfer recording medium,
22.32... Vapor deposited aluminum layer, 23...
・Black layer, 24, 43.54... Base paper, 25° 35.45, 55.65... Electrode -\Tsudo, 2
6゜36.46, 56.66... electrical conductor, 2
7゜37.47,6了,67...Fixing material containing hexagonal boron nitride and talc, 28.38.48゜5
8.68... Electric signal, 3s... Base film, 34... Colored transfer layer, 42...
...Recording layer, 44...Drum, 62...
... Coloring layer, 63 ... Conductive layer, 62 ...
- Electrically anisotropic film, 63... Conductive low melting layer, 64... Recorded body. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure/1 Figure 2 27 Figure 3 Figure 4 Δl Figure 5 l

Claims (1)

[Scope of Claims] (1) Using an electrode head consisting of an elongated electrical conductor and a fixing material containing hexagonal boron nitride and talc for fixing the electrical conductor, the tip of the elongated electrical conductor is used. 1. A recording device that records on a recording body by applying electricity between the recording body and the recording body. ? ) The fixing material is at least hexagonal boron nitride, Merck, and a thermosetting resin, the hexagonal boron nitride is 6% by weight or more, and the total amount of hexagonal boron nitride is 26 to 26% by weight.
The recording device according to claim 1, wherein the recording device is a molded body containing 90% by weight. C) The recording device according to claim 1, wherein the elongated electrical conductor is a striped electrical conductor. (4) The recording device according to any one of claims 1 to 4, wherein the recording medium is discharge destruction recording paper. (5) The recording device according to any one of claims 1 to 4, wherein the recording medium is a discharge rupture transfer recording medium. (6) The recording device according to any one of claims 1 to 4, wherein the recording medium is an electrolytic recording paper. ('r) The recording apparatus according to any one of claims 1 to 4, wherein the recording medium is an electrically conductive heat-sensitive recording paper. (8) A recording apparatus according to any one of claims 1 to 4, wherein the recording medium is an energized heat-generating transfer recording medium.