JPS6068952A - Energization head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a write head for a recording device that records an electrical signal as a visible image.

Conventional configurations and their problems In recent years, various terminals have been required due to office automation. Among these, recording devices that convert electrical signals into visible images, so-called printers, are in great demand, but there are few that are satisfactory in terms of performance. Among various recording devices, discharge breakdown recording devices are generally widely used because they are superior in terms of high speed, record retention, and economical efficiency. However, the print quality of this recording device is not very good. That is, the resolution is not very good, and currently 5 to 6 dots/tomo is common. Despite the inherent ability of discharge rupture recording devices to achieve higher resolution, their performance has been kept low due to the difficulty of manufacturing write heads.

The discharge breakdown recording device is a discharge breakdown recording paper consisting of a vapor deposited aluminum layer, a black layer, and a base paper layer.The vapor deposited aluminum layer of the discharge breakdown recording paper is grounded, and an electrode to which a voltage is applied is brought into contact with this vapor deposited aluminum layer, and the contact portion is heated or discharge breakdown occurs. Printing is done by removing the vapor-deposited aluminum and exposing the underlying black layer. Therefore, in order to write well, use a wire (as shown in Figure 1A).
A write electrode is made to expose the electrode needle (11) and ensure contact. 12, the fixed part 13 is a lead. If the electrode needles are not exposed (protruded) as shown in Figure 1B, the area around the electrode needles 14 is destroyed, and dust generated during recording accumulates there, damaging the 123m distance between the electrode needles and preventing a good attachment. Since the electrode needle cannot be inserted, the electrode needle is protruded,
Moreover, it must be made of durable material, therefore,
I had to use something thick and hard. As a result, it was not possible to increase the resolution yield.Other recording devices, such as electrothermal recording and electrolytic recording, had similar problems.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a write head that enables high-resolution recording and is inexpensive.

Structure of the Invention The current-carrying head of the present invention includes a cloth-like body in which either one of the warp threads or the weft threads is a conductive fiber and the other is a non-conductive fiber.
It is constructed by adhering and fixing it to an insulating material containing 30 to 9 Q wt% of talc (talcum), and the conductive fibers are used as a current conduction path, which allows for long life and high resolution recording. Moreover, it is possible to realize an inexpensive and highly reliable current-carrying head. Furthermore, the cloth-like body can be made of talc (talc) i 3 , O~
9 Q wt%-containing insulators are bonded and fixed to each other, and an electrically insulating support is used to hold the cloth-like body from both sides,
The adhesively fixed cloth-like body is made to be able to be fed in accordance with the wear of the cloth-like body by means of a suppression device that utilizes pressure, thereby achieving even better continuous writing performance. Guaranteed.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a perspective view of a cloth-like body used in the present invention.

In FIG. 2, 21 is a conductive fiber such as gold Ra;
2 is a cloth-like body woven from non-conductive fibers such as polyester, which can be easily obtained using a common loom or spinning machine. Stainless steel and copper are used as the conductive fibers mentioned above.

Conductive materials such as carbon fiber, coated wires, etc. are used. Non-conductive fibers include synthetic fibers such as nylon, polyester, and acrylic.

Natural fibers are used. FIG. 3A is a cross-sectional view of such a cloth-like body in which one of the weft and warp yarns is woven with conductive fibers and the other is woven with conductive fibers, and is bonded and fixed to the entire insulating material. FIG. 3B illustrates the writing method.

In FIGS. 3A and 3B, 32 is an insulating material, 34 is a non-conductive fiber, 33 is a conductive fiber, and 31 is a discharge rupture paper. A current is passed between the conductive fibers 33 and the discharge breaker paper 31 to destroy the aluminum vapor deposited layer of the discharge breaker paper, exposing the black layer and visualizing the pattern corresponding to the electrical signal.

This will be explained below using specific examples and comparative examples.

(Shio Example Work) Using stainless steel with a diameter of 30 μm as the conductive fiber and polyester with a diameter of 20 μm as the non-conductive fiber, the pitch between the lines was 7.
A cloth-like material of 0 μm was woven and could be used as a cloth-like electrode with a resolution of 10 lines/throat. As the material composition of the insulator, a slight accelerator was added to the composition consisting of the following, and the mixture was kneaded with a roll to obtain an epoxy resin composition containing 50 wt% of talc (talc).The obtained epoxy resin composition was It is solid at room temperature, has clay-like plasticity, and can be easily processed mechanically, compression molded, cut out, etc., and has a thickness of 3.
rrtm sheet, and the cloth-like body and talc 50
A sheet of an epoxy resin composition containing wt% is pressed, and heated and cured in the pressed state, so that the cloth-like body and the epoxy resin composition are adhesively fixed to each other, so that the tips of each conductive fiber are exposed. It was cut to obtain 8 current-carrying heads of 10 pieces/tmn.

(Comparative example ■) Using the same cloth as in Example 1, the insulating material was adhesively fixed using only the epoxy resin and curing agent used in the actual example, and the tips of each of the four electrically conductive fibers were exposed. Cut into 10 pieces/
I got the energized head B.

(Comparative Example ■) The same cloth-like body as in Example ■ was used, and the material composition of the insulator was the epoxy resin and curing agent used in Example I, and the amount of fused silica powder 180 Ji (added silica content The cloth-like body was adhesively fixed using a 60 wt % epoxy resin composition, and cut so that the tips of each conductive fiber were exposed to obtain a current-carrying head C of 10 fibers/wn.

The current-carrying head A obtained in Example ① was of the A-4 type (1
After writing consecutive 1αC lines at a speed of 20 Cm e (6 lines/sec), no short circuit between the electrodes was found when the current-carrying head was examined, and even an insulator containing 50 wt% Merck (talcum) was found. There was almost no adhesion of foreign substances such as aluminum fused materials, and no loss due to heat generation was observed. On the other hand, in the current-carrying head B, which does not contain any filler, large holes are formed near the electrodes due to the heat generated by the discharge, and conductive foreign matter such as aluminum fused material accumulates there, causing short circuits between the electrodes.
It was in a state where there was less than 00 lines.

The current-carrying head C containing 60 wt% of fused silica has a hard head tip and leaves islands on the aluminum vapor-deposited paper, making it impossible to obtain clear print.When examining the sound of the current-carrying head after writing 500 lines, it was found that the tip of the head was hard. generates heat (talcum)'f: By adhesively fixing it to the contained insulator, a high-resolution, highly reliable, and long-life current-carrying head can be obtained. This is talc's excellent heat resistance.

This is caused by lubricating properties, electrical insulation, workability, etc.

Next, other embodiments of the present invention will be described.

(Actual sister example...) A cloth-like body that can be used as a cloth-like electrode body with an image resolution of 1o lines/1nfn was obtained. Bisphenol A type epoxy resin was used as the insulator, aromatic amine was used as the curing agent, and the amount of Merck added was adjusted. We fabricated current-carrying heads using different insulators, evaluated current-carrying heads with different amounts of added talc, and determined the optimal amount of Merck to be added.

Table 1 Merck's Optimal Addition Amount Printing quality was determined by writing 1000 consecutive lines and checking for print deterioration due to short circuits between electrodes. Difficulty in attracting dust is
The degree of adhesion of conductive dust, including aluminum deposits, on insulators was investigated. As a result, print quality and dust adhesion are
It turned out that there was a close relationship. It is thought that the excellent lubricating properties of talc prevent the adhesion of dust.

The hardness was determined by observing the damage caused by contact with the current-carrying head of the discharge rupture paper, and the flame retardance was evaluated as ○ in accordance with UL-94 (thickness of the test piece) equivalent to V-o. Processability was judged from the adhesive strength and formability between the insulator and the cloth-like material.As shown in Table 1 above, talc was not effective when added at 30 wt%, but was not processable when added at 90 wt%. Preferable addition l, 4. The optimal addition amount was 30 to 90 wt%, more preferably 40 to 80 wt%.

Next, still another example of an actual gun according to the present invention will be described.

[Example ■]

FIG. 4 is a cross-sectional view of the writing portion of the present invention. Fourth
In the figure, 41 is discharge destruction paper, 42 stell is used,
A cloth-like body usable as a cloth-like electrode with a resolution of 10 lines/bleached was obtained. As an insulator, 6゜wt% Notalc (99% purity)
), the cloth-like body and the epoxy resin containing Merck were adhesively fixed to each other to obtain a writable current-carrying head. Furthermore, using polyether zulfone as an electrically insulating support, the adhesively fixed cloth-like body is held down from both sides, and a suppression device using spring pressure is used to adhere the cloth-like body as the cloth-like body wears out. Fixed cloth objects can now be sent forward.

Tsu-! A constant force is always applied to the fixed cloth-like electrode body by the spring pressure, and an amount of force corresponding to the wear of the cloth-like electrode body is applied, thereby maintaining good writing performance. When continuous writing was performed with the cloth-like electrode body fixed, the contact between the current-carrying head and the recording paper deteriorated after 2,000 to 3,000 lines, resulting in blurred printing or partial printing failure (9'). However, when a structure was adopted in which the current-carrying head was pressed with a constant force using spring pressure, good printing was obtained even when 5000 lines of continuous writing were performed. When printing with a current-carrying head adhesively fixed to a cloth-like body using an insulating material that does not contain any talc using the same support and suppression device as above, about 100 lines of printing will occur due to conductive dust adhering to the vicinity of the electrodes. A short circuit occurs between the electrodes, and continuous writing performance becomes unsatisfactory.

When a filler such as Sunda silica is used for a total insulator, problems arise in terms of printing quality and writing life.

As mentioned above, the hardness, lubricating properties, heat resistance, etc. of layered materials such as talc are all disappointing;
By combining the vinegared insulator and a pressing device using spring pressure, good continuous writing is ensured.

In the above example, discharge breakdown recording was used as the recording method, but the energizing head of the present invention is not limited to this, and recording methods using energized metal have the same problems as discharge breakdown recording. Yes, it can be applied.

For example, the generally known electrothermal transfer, electrolytic recording,
It can be applied to discharge transfer.

Effect of the invention As is clear from the above description, the present invention relates to warp yarns.

A cloth-like body in which one of the wefts is a conductive fiber and the other is a non-conductive fiber is made of 30 to 90 w of talc (talc).
The conductive fibers are bonded and fixed to each other with an insulating material containing t%, and the conductive fibers are configured so as to be used as current-carrying electrodes, thereby producing a high-resolution current-carrying head with good reliability and at low cost. realizable. Furthermore, with an electrically insulating support, talc (talc) was held down from both sides of the cloth-like body, which was bonded and fixed to an insulating material containing 30 to 90 wt%, and with a pressing device using a spring. Guaranteed against wear at the tip of the cloth body.

[Brief explanation of drawings]

1A and 1B are perspective views of a conventional current-carrying head, FIG. 2 is a perspective view of a cloth-like body used in the current-carrying head of the present invention, and FIG. 3A is a perspective view of a current-carrying head according to a sister example of the present invention. Cross-sectional view, Figure 3B
4 is a perspective view of a writing portion using the same current-carrying head, and FIG. 4 is a sectional view of a writing portion using a current-carrying head according to another embodiment of the present invention. 11.14... Electrode, 12... Fixed part, 13... Lead, 21.33.43...
...Conductive fiber, 22゜34...Non-conductive fiber, 32.44...Insulator, 31.41...
...Discharge destruction paper, 42...Support, 45...
···Spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure/f Figure 3 4

Claims (2)

[Claims] (1)! A cloth-like body in which one of the threads and wefts is conductive fiber and the other is non-conductive fiber contains talc of 30 to 9
A current-carrying phase head in which the conductive fibers are bonded to each other with an insulating material containing 0 wt%, and the conductive fibers are used as a current-carrying electrode. (2)! A cloth-like body in which one of the threads and wefts is a conductive fiber and the other is a non-conductive fiber contains 30% of talc.
A cloth-like body that is adhesively fixed to an insulator containing ~90 wt% gold, and the cloth-like body that is adhesively fixed to the insulator is held down from both sides by an electrically insulating support, and the cloth-like body that is adhesively fixed to the insulator is The current-carrying piece head is configured to be able to be fed by a suppression device using spring pressure in response to wear of the cloth-like body, and the conductive fibers are used as current-carrying electrodes.