JPS5810110Y2 - thermal pen - Google Patents

Description

[Detailed description of the invention] The present invention is a type of tape for writing data on recording paper, etc.
The present invention relates to a pen device for writing data.

Ink-based pen devices used in X-Y recorders and other instrument recorders often use blue, red, or green ink to record data on paper. .

If these conventional ink-type pen devices are left unused for long periods of time or are used in locations where flakes are likely to occur, they may become clogged, or may not be able to write data due to insufficient ink. The ink may flow out and cause smearing, or there may be ink droplets, etc.
It is often necessary to adjust the pen tip, ink container, etc., and it is necessary to be extremely careful in managing the ink.Also, the recording paper cannot be organized into files immediately after recording, and the ink is left until it dries. I had to file it later.

In addition, the use of thermal pens can be considered as an alternative to such conventional ink pen devices, but conventional thermal pens consume relatively large amounts of power, have poor thermal response, and have thin wires. It was difficult to record, and furthermore, the recording line width had directionality, making it unsuitable for continuous recording.

The purpose of the present invention is to provide a thermal pen for continuous recording that has low power consumption, good thermal response, and is suitable for thin line recording, as an alternative to the conventional data recording pen device that has the drawbacks mentioned above. It is to be.

Next, the present invention will be described in detail with regard to embodiments of the present invention based on the accompanying drawings.

FIGS. 1A and 1B are a partial front view and a bottom view of an embodiment of a thermal pen according to the present invention.

The thermal pen of this embodiment is manufactured by printing and firing a thermally strong resistor material on one side of a substrate 1 of an insulating material as a support to form round dots as shown in FIGS. 1A and B. one convex round dotted thick film type heat generating resistor 3 is formed on only a part of one surface thereof,
In addition, conductive layers 2A and 2B as thick film conductors for supplying current to the heat generating resistor 3 are extended on the same surface of the substrate 1 on which the heat generating resistor 3 is provided, and one end of each is extended. is formed so as to be connected to the heating resistor 3.

2A and 2B are partial front and bottom views of another embodiment of the thermal pen according to the present invention.

The thermal pen of this embodiment is shown in FIG. 1 except that the conductive layers 22A and 2B as conductors are not provided on the same surface of the substrate 1 but are formed so as to extend on both sides. It is formed in the same way as a thermal pen.

3A and 3B are bottom and front views of another embodiment of the thermal pen according to the present invention.

In the thermal pen of this embodiment, the substrate 1 as a support is a square strip, and the other ends of conductive layers 2A and 2B as conductors connected to the heating resistor 3 are on the opposite side of the substrate 1. It is formed in the same manner as the thermal pen shown in FIG. 1, except that it extends to the surface.

FIGS. 4A and 4B are a bottom view and a central cross-sectional view of yet another embodiment of a thermal pen according to the present invention.

In the thermal pen of this embodiment, the other ends of conductive layers 2A and 2B connected to the heating resistor 3 are conductive terminals 2 that penetrate through the substrate 1.
It is similar to the thermal pen shown in FIG. 3, except that it is extended to the opposite surface of the substrate 1 by A' and 2B'.

FIGS. 5A and 5B are a longitudinal sectional view and an electrical equivalent circuit diagram of an example of a fountain pen type thermal pen to which the thermal pen tip of the present invention as shown in FIGS. 1 to 4 can be applied. It is.

This fountain pen type thermal pen has an insert 5 of insulating material at the tip.
A battery 8 serving as a power source is housed within a fountain pen-shaped outer cover 4 serving as a support body provided with a battery.

In this example, the outer cover 4 is made of a conductive material, and the heating resistor 3 is formed at the tip of the insert 5 so that its peripheral edge is connected to the outer cover 4.

The central part of the heating resistor 3 is connected to a conductor 6 which passes through the insert 5 and provides a terminal exposed inside the jacket 4.

A conductive spring 7 is provided within the outer cover 4.
This conductive spring 7 holds the battery 8 within the jacket 4 with the positive pole of the battery 8 pressed against the terminal by the conductor 6, and at the same time connects the negative pole of the battery to the jacket 4, thus
It functions so that power can be supplied to the heating resistor 3 from the battery 8.

As is clear from the electrical equivalent circuit of FIG. 5B, the thermal pen of FIG. 5A can be operated by closing a switch SW (not shown in FIG. , the heating resistor 3 is energized by the battery 8 via the conductor 6, the conductive spring 7, and the jacket 4, and generates heat.

This fountain pen-shaped thermal pen is suitable for writing data on thermal recording paper.

Furthermore, depending on the application, it may be a good idea to place a heat dissipating material near the heat generating resistor of the thermal pen in order to produce a heat dissipating effect, or a heat resistant material with poor thermal conductivity may be placed near the heat generating resistor to improve the heat dissipating effect. It is best to place it on the back of the body.

Furthermore, in order to improve the abrasion resistance against the heat-sensitive material, it is preferable to coat the heating resistor with an abrasion-resistant material in some cases.

The case where data is recorded in various colors using the thermal pen according to the present invention as described above will be explained.

That is, by appropriately selecting the heat-sensitive material of the recording paper, it is possible to record data in blue, red, and black.

For example, in the case of a heat-sensitive material consisting of a base paper 11 and a blue coloring agent 12 as shown in FIG. 6, the heat generated by the heat-generating resistor 3 of the thermal pen causes the area 12A near the connection part to develop a blue color, resulting in blue, -color. can be recorded.

Base paper 11 as shown in FIG. High temperature red coloring agent 13
If the heat-sensitive material is made of the low-temperature blue coloring agent 12, two-color recording is possible.

In this case, the thermal pen, which generates thermal energy Ql by applying a predetermined voltage to the heating resistor 3 of the thermal pen, is in contact with the thermal material, and the thermal material or the thermal pen is moved. As a result, the area 12A near the contact part develops a blue color and blue recording is possible, and the heating resistor 3 becomes Q2 (Ql<Q
2) With the thermal pen generating thermal energy in contact with the heat-sensitive material, by moving the heat-sensitive material or the heat pen in the same way as before, the areas 12A and 13A near the contact area will each develop a blue color. It also develops a red color and records a red color mixed with blue.

In order to make the high-temperature red color more vivid, you can increase the voltage applied to the thermal pen, increase the contact pressure between the thermal material and the thermal pen, or slow down the feeding speed of the thermal pen or the thermal material. do it.

As an actual example, using the thermal pen shown in FIG. 1 and the thermal paper shown in FIG.
When we conducted a long-term recording test by applying DC 12 V to approximately Ω, we found that the heat generation temperature was over 200°C, and the thermal response was on the order of mS, indicating that thermal recording was possible and that the scales were sufficiently durable for practical use without being coated with wear-resistant material. It has been found that.

Further, by coating the surface of the heating resistor 30 with special glass as an abrasion-resistant material, the degree of surface abrasion is greatly improved, and it is desirable to classify and use the heat generating resistor 30 according to its purpose.

As is clear from the above, the thermal pen of the present invention has
Since it is easy to manufacture and can record data on a heat-sensitive material using the heat generated by the heating resistor, it eliminates the problems of clogging, ink shortage, ink dripping, etc. that occur in conventional ink pen devices. There are no problems, and records can be filed immediately without having to wait for the ink to dry after recording, making it extremely easy to handle.

Furthermore, as mentioned above, the thermal pen of the present invention has only one thick-film heating resistor for heat recording formed in the shape of a convex round dot on only a part of one plane of the insulating substrate. As a result, the heat generated by the heating element is dissipated to the insulating substrate, and the rate of heat dissipation is minimized, making it possible to make effective use of heat. Therefore, it is possible to reduce the power consumption of the thermal pen, and to reduce the amount of heat generated. It can be used as a thermal pen with a good start-up.

Further, it is easy to make the heating resistor itself minute, and it is easy to make the recording line width small, for example, Q, 3 mm or less.

Furthermore, since the heating resistor of the thermal pen according to the present invention has a convex shape and a round dot shape, the recording line width does not vary depending on the moving direction of the thermal pen.

These things are important for a continuous recording thermal pen that may be moved at a relatively high speed in various directions such as up, down, left, right, and diagonally.

[Brief explanation of drawings]

1A and B of the accompanying drawings are a partial front view and a bottom view showing one embodiment of the thermal pen according to the present invention, and FIGS. 2A and 2B are partial front views showing another embodiment of the thermal pen according to the present invention. 3A and B are bottom views and front views showing another embodiment of the thermal pen according to the present invention, and FIGS. 4A and B are bottom views showing still another embodiment of the thermal pen according to the present invention. 5A and 5B are vertical sectional views showing an example of a fountain pen-type thermal pen and its electrical equivalent circuit, and FIG. Schematic diagram for recording. FIG. 7 is a schematic diagram for recording data on a two-color recording heat-sensitive material using the thermal pen of the present invention. 1... Substrate, 2A, 2B... Conductive layer,
3... Heat generating resistor, 4... Outer cover, 5...
...Insert body, 6...Conductor, 7...
...Conductive spring, 8...Battery, 11...
... Base paper, 12 ... Blue coloring agent, 12A.
...Near the contact part, 13...Red coloring agent,
13A...Near the contact part.

Claims (1)

[Scope of utility model registration request] A thick film heating resistor in the form of a round dot is provided in a convex shape only on a part of one plane of the insulating substrate, and the thick film heating resistor is connected to the heating resistor in order to supply current to the heating resistor. A thick-film thermal pen for continuous recording that is equipped with a conductor.