JP3174013B2 - Sealed sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to an easily breakable sheet.
Circuit board with a given resistance value on the surface of
The seal-type sensor having printed turns is particularly suitable for printing a circuit pattern having a predetermined resistance value on a base material such as paper.

[0002]

2. Description of the Related Art Conventionally, when a circuit pattern is formed on the surface of an insulating substrate, a fine powder such as carbon or copper is kneaded with an adhesive and has conductivity and conductivity. Using ink, this ink was printed on the surface of the insulating base material.

As the above-mentioned insulating substrate, a hard type obtained by using a paper or glass cloth as a base material, impregnating the base material with a synthetic resin such as phenol or epoxy, heating and pressing, and then performing a curing treatment. Or a flexible type substrate using a sheet-like synthetic resin having flexibility.

Recently, there has been a demand to directly print a circuit pattern on a base material such as paper in order to impart various functions to an electric circuit or to reduce manufacturing costs. For example, a sealing seal ( sealing) attached to an opening / closing portion of an object to be sealed so that it is easy to determine that the object has been opened.
A type of sensor that has been adjusted to a predetermined resistance value on the surface of an insulating sheet material (insulating base material) that can be easily broken, such as paper, for the purpose of adding a function of detecting the opening of the seal to the Attempts have been made to form patterns.

[0005] Then, this sealing seal is used for the object to be sealed.
It is used by attaching it to the opening / closing part, and is used to break or break the circuit pattern.
Security against changes in electrical state such as changes in resistance
The presence / absence of fraud is determined by the detection by the device.

[0006]

However, the electric resistance value is greatly affected by the width of the printed conductor, and also varies depending on the thickness of the conductor. The circuit pattern is much longer in length than the width of the printed line. For this reason, when printing with the ink containing the electric resistor over the entire length of the circuit pattern, it has been difficult to keep the thickness and width of the ink constant with accuracy that does not affect the electric resistance value. In particular, the above-mentioned paper has permeability because it is an aggregate of fibers and is porous, so that the printed conductive ink penetrates in the thickness direction of the paper and the width direction of the surface. I will. As a result, the resistance value of the printed circuit pattern varies, and the resistance value often falls outside the allowable range (error range) of the set resistance value. Therefore, the yield of the products has deteriorated and the quality has become unstable. It was also difficult to fine-tune the resistance value after printing. And even if it prints on the synthetic resin sheet which has little permeability, if it prints with the ink including the electric resistor over the entire length of the circuit pattern, the thickness and width of the ink can be adjusted with the precision which does not affect the resistance value. It is difficult to make it constant. Therefore, the resistance value of the printed circuit pattern varies.

Therefore, an object of the present invention is to provide a semiconductor device having a predetermined resistance value.
Yield of Sealed Sensor with Changing Circuit Pattern
Quality as well as stabilization of quality
The purpose is to ensure that an action can be detected.

[0008]

Means for Solving the Problems The present invention has been proposed to achieve the above object, and the first aspect of the present invention provides a sheet-like insulating base material which is easily broken and has a predetermined resistance.
A seal type sensor formed with a circuit pattern of a value,
Is the conductor part having a local defect part in the middle an electrically good conductor?
Mark on the surface of the insulating substrate with the first conductive ink comprising
Printing and a second conductive ink containing an electric resistor
The resistance applying portion is printed on the defective portion by the circuit pattern
Formed on the side edge of the insulating base material,
A notch extending to the front of
Bent so that it surrounds the tip of the cut
It is a seal type sensor characterized by doing.

Here, the electrically good conductor is a conductive material having a resistance value of 0 ohm or a resistance value close to 0 ohm.
For example, gold, silver, copper, etc. correspond. Specifically, the first conductive ink corresponds to a copper paste or a silver paste obtained by kneading copper powder or silver powder or the like with an adhesive substance, or a conductive ink containing copper powder or silver powder or the like. . In addition, an electric resistor is a substance that imparts electric resistance, for example, carbon or the like. The second conductive ink corresponds to a resistance paste obtained by kneading carbon powder together with an adhesive substance, a resistance ink containing carbon powder, and the like.

According to a second aspect of the present invention, the conductor portion is
Equipped with a plurality of connection parts for connecting one end and the other end in parallel
And the above-mentioned defective portion is provided in the middle of each connection portion.
Disconnect the electrical continuity between one end and the other end
To define the resistance value of the circuit pattern,
And adjust the measured resistance value to the specified value
And an adjusting resistance applying section for
A seal-type sensor according to claim 1.

Here, the main resistance applying section is a section for specifying the resistance value of the circuit pattern, and the adjusting resistance applying section is a section provided for adjusting the resistance value of the circuit pattern to the specified value.

According to a third aspect of the present invention, the tip of the notch is provided.
The end portion is formed in a T-shape.
Item 3. A seal-type sensor according to Item 2.

According to a fourth aspect of the present invention, the circuit pattern
That a protective layer covering the insulation layer is formed on the surface of the insulating substrate
The system according to any one of claims 1 to 3, wherein
There is a rule type sensor.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, a sealing seal , which is a kind of a sealing sensor, will be described as an example . This sealing seal is a sheet-shaped electric resistor as a whole.For example, in the case of a pachinko machine control device, when it is inconvenient to open it once closed and then opened, it is stuck to the opening / closing portion and opened. This is to make it easy to find out.

First, the structure of the seal will be described. As shown in FIG. 1, the sealing seal 1
And a circuit pattern 3 formed on the surface of the seal base material 2;
Coating layer 4 that covers and protects the surface of the sealing base material 2 and the circuit pattern 3 (the area indicated by hatching in the figure)
It is schematically composed of

In the present embodiment, the sealing base material 2 is made of a relatively thin and low-strength paper material, and the surface of the sealing base material 2 is printed with the word "seal" to indicate that it is a seal. .
Note that the seal base material 2 may be any insulating sheet-like member that breaks relatively easily. However, when a paper material is used as in the present embodiment, there is an advantage that raw material costs can be reduced and products can be supplied at low cost. Then, an adhesive layer (not shown) exhibiting a strong adhesive force is provided on the back surface of the seal base material 2 or an adhesive is applied. Further, the back surface of the seal base material 2 may be an adhesive surface that adheres to the adhesive applied to the surface to be adhered (that is, the opening / closing portion of the object to be sealed).

The circuit pattern 3 includes a thin strip-shaped wire pattern 5 functioning as a wire portion, and a resistance layer 6 provided in the middle of the wire pattern 5 and functioning as a resistance applying portion. The conductive wire pattern 5 is made of a paste (liquid having a relatively high viscosity) of a conductive paste kneaded with an adhesive such as an adhesive, or a liquid conductive ink containing the conductive material. The first conductive ink is formed by printing on the surface of the sealing base material 2). The conductive material here is a good electrical conductor having a resistance value of 0 ohm or a value close to 0 ohm, such as gold, silver, or copper.

In the middle of the above-described conductor pattern 5, FIG.
As shown in FIG. 5, a first defective portion 7 in which the conductive wire pattern 5 is locally lost is provided. A plurality of thin strip-shaped wire connecting portions 10 are provided between the first conducting portion 8 and the second conducting portion 9 in a state of being electrically connected with the first defective portion 7 as a boundary. It is. In the middle of the connecting portion 10, a second missing portion 11 which is locally lost is provided.
The first and second missing portions 7 and 11 provide an electrical connection between the first conducting portion 8 at one end of the conductive wire pattern 5 and the second conducting portion 9 at the other end. The conduction is in a disconnected state. Note that the end portion of the conductive wire pattern 5 located near the first defective portion 7 also functions as the connection portion 10.

The first energizing section 8 and the second energizing section 9 are arranged intensively at the connector connecting section 12 provided at the right end in FIG. 1, and a connector (not shown) provided with a lead wire is provided. And electrically connected to the outside.

The resistance layer 6 is composed of a main resistance layer 15 (main resistance application section) provided in the first defect portion 7 and an adjustment resistance layer 16 (adjustment resistance application section) provided in the second defect portion 11. The main resistance layer 15 and the adjustment resistance layer 16
The first conducting portion 8 side and the second conducting portion 9 side of the conductive wire pattern 5 are electrically connected. Here, the main resistance layer 15 and the adjustment resistance layer 16 define the resistance value of the circuit pattern 3. Such a resistive layer 6 is provided by printing, for example, a resistive ink or a resistive paste that contains carbon and is conductive but has a resistance value (that is, a second conductive ink).

When the main resistance layer 15 and the adjustment resistance layer 16 are provided, the plurality of adjustment resistance layers 16 are connected to the main resistance layer 15 in parallel. By cutting off the conduction of 16, the resistance value of the circuit pattern 3 (corresponding to the resistance value between the first conducting section 8 and the second conducting section 9) can be changed. That is, the main resistance layer 15 functions as a resistance serving as a reference for the resistance value of the circuit pattern 3. The adjustment resistance layer 16 adjusts the resistance value of the circuit pattern 3 to a predetermined value, or creates a circuit pattern 3 having a plurality of resistance values from one circuit pattern 3 (that is, a circuit pattern 3 having different specifications). It functions as an adjusting resistor when adjusting.

In the present embodiment, the effective length of the main resistance layer 15 (that is, the length corresponding to the first defect portion), the cross-sectional area and the effective length of the adjustment resistance layer 16 (that is, the second defect portion). Length) and the same cross-sectional area.
The same resistance ink is used to form the main resistance layer 15 or the adjustment resistance layer 16.
By changing the effective length and the sectional area of the resistance layer, the resistance value of the main resistance layer 15 and the resistance value of the adjustment resistance layer 16 can be made different, or the resistance value of each adjustment resistance layer 16 can be made different. it can. Thus, each of the resistance layers 15, 16
By making the resistance values different, the adjustable range of the resistance value of the circuit pattern 3 can be widened, and the circuit pattern 3 with more specifications can be manufactured.

Further, when the resistance value of the adjustment resistance layer 16 is set to a resistance value higher than the resistance value of the main resistance layer 15 (for example, about 100 times), the resistance value of the circuit pattern 3 becomes equal to the resistance value of the main resistance layer 15. Since the resistance value is a combined resistance value of the resistance value of the adjustment resistance layer 16 and the resistance value of the adjustment resistance layer 16, the resistance value can be close to the resistance value of the main resistance layer 15. Further, with respect to the adjustment resistance layer 16, even when the electrical conduction of the adjustment resistance layer 16 is cut off, the amount of change in the resistance value of the circuit pattern 3 becomes small. That is, the main resistance layer 1
The resistance value of the circuit pattern 3 can be set to a resistance value (that is, a reference) close to the resistance value of No. 5 and the resistance value of the circuit pattern 3 can be finely adjusted by cutting off the conduction of the adjustment resistance layer 16. it can.

In order to make the resistance values of the resistance layers 15 and 16 different, different resistance inks having different resistance values may be used.

The coating layer 4 is a synthetic resin layer such as a thermosetting resin or an ultraviolet curable resin. The coating layer 4 is provided using a coating device called a coater or the like, and covers the entire surface excluding the connector connection portion 12 described above. In addition, regarding this coating layer 4,
In order to use it as the sealing seal 1, it is required that it can be easily broken. In view of this, the coating layer 4 is made of a synthetic resin having relatively low mechanical strength,
It is desirable to form in a thin layer.

Cut portions 17 extending from the outer peripheral edge to the front of the conductor pattern 5 are formed at a plurality of locations on the side edges of the seal base material 2, and breaks from the cut portions 17 intersect the conductor pattern 5. I have to do it. The notch 17 in the present embodiment is a substantially T-shaped slit formed with the head, which is the tip , facing the conductor pattern 5 as shown in FIG. The conductor pattern 5 is bent in a U-shape so that the break from the slit immediately crosses the conductor pattern 5.
It is arranged close to the notch 17 so as to bend and surround the T-shaped head .

Next, an outline of a method of using the sealing seal 1 will be described. The sealing seal 1 is used by attaching it to an opening / closing portion (not shown) of an object to be sealed. In this stuck state, electrical signals from the first energizing unit 8 and the second energizing unit 9 are input to, for example, a security device (not shown).

At this time, the sealing seal 1 and the object to be sealed are adhered with a strong adhesive force so as not to be easily peeled off. Then, when the wrongdoer applies a pulling force to the sealing seal 1 to peel off the sealing seal 1, the sealing seal 1
Of the notch 1
Stress concentration occurs on the head of No. 7. Due to this stress concentration, the sealing seal 1 (the seal base material 2 or the like) is broken, and the broken portion intersects the conductive wire pattern 5 to cut the conductive wire pattern 5.

When the conductor pattern 5 is cut, the electrical continuity of the circuit pattern 3 is cut or the conductor pattern 5 is cut.
Since the resistance value of the circuit pattern 3 changes depending on the shape of the electronic device, the security device detects such a change in the electrical state and determines whether or not there is an illegal act.

Similarly, when a wrongdoer tries to perform an illegal work and peels off the coating layer 4, the peeling action breaks the electrical continuity of the circuit pattern 3 or changes the resistance value. I do. In addition, the first and second
When the current-carrying portions 8 and 9 are short-circuited, the entire resistance value is monitored, so that a fraudulent activity can be detected.

Next, a method for manufacturing the sealing seal 1 will be described. In this manufacturing method, as shown in FIG.
A sheet or roll paper (hereinafter, referred to as a base paper 20) having electrical insulating properties and serving as the seal base material 2 is used.
0 is divided into a number of rectangular areas 21 arranged in the vertical and horizontal directions for use. That is, one sealing seal 1 is manufactured by one rectangular area 21 and a large number of sealing seals 1 are manufactured by one operation.

Then, the sealing seal 1 includes a conductor part printing (forming) step of printing a conductor pattern 5 (conductor part) on the surface of the base paper 20 (the surface of the seal base material 2), and a resistance layer 6 (resistance applying part). To form a circuit pattern 3 by printing a resist pattern, a coating step of coating the surface of the seal base material 2 on which the circuit pattern 3 is formed, and forming the cutout 17 in the coated base paper 20. Notch forming step, cutting step for cutting the base paper 20, resistance value measuring step for actually measuring the electric resistance value of the circuit pattern 3, cutting section selecting step for selecting the adjustment resistance layer 16 for cutting off the electrical continuity, It is manufactured through a trimming step or the like for cutting electrical conduction of the selected adjustment resistance layer 16.

In the conductor part printing step, as shown in FIG.
The conductive pattern 5 of a strip-shaped line in which the first deficient portion 7 and the second deficient portion 11 are locally provided is formed by using a conductive ink (a kind of the first conductive ink). In the conductive part printing step, for example, a mask member from which the conductive pattern 5 has been cut is placed on the surface of the base paper 20. After the mask member is placed, the conductive ink is applied to the surface of the mask member and dried to form a conductive wire pattern 5 on the surface of the base paper 20 (seal substrate 2). In the conductive part printing step, the conductive pattern may be formed by applying conductive ink or the like to the relief plate on which the conductive pattern 5 is formed, and transferring the conductive ink to the surface of the base paper 20.

In the resistance applying portion printing step, as shown in FIG. 4A, the main resistance layer 15 (main resistance applying portion) is provided in the first defective portion 7 and the adjustment resistance layer 16 is provided in the second defective portion 11. (Adjustment resistance applying section) is provided. As described above, the main resistance layer 15 and the adjustment resistance layer 16 are formed by printing a resistance ink (a kind of the second conductive ink) or the like. That is, similarly to the conductor part printing step, the conductive member is provided using a mask member or a relief plate. As shown in FIG. 4B, each of the resistance layers 15 and 16 is provided such that its end overlaps with the end of the connection portion 10 (a part of the conductor pattern 5).

Each of the resistance layers 15, 16 thus provided
Is localized, even if the resistance ink or the like (the second conductive ink) permeates into the base paper 20 (the seal base material 2) or bleeds in the width direction, the change in the resistance value due to the influence is ignored. As little as possible. Further, even if the width and thickness of each of the resistance layers 15 and 16 after printing deviate from the design values, the deviation amount is negligibly small. Therefore, the obtained resistance value of the circuit pattern 3 falls within a predetermined resistance value.

In the coating step, as described above,
Using a coating device, the entire surface of the base paper 20 excluding the connector connection portion 12 is covered with a synthetic resin layer. That is, the entire surface is covered except the region A indicated by oblique lines in FIG. In the notch 17 forming step, the notch 17 (see FIG. 1) is formed in the base paper 20 using a cutter or the like.

In the cutting step, the base paper 2 shown by a dotted line in FIG.
The U-shaped portion B as a surplus portion of 0 is cut out, and the vertical and horizontal line portions C shown by solid lines are cut out, and the base paper 20 is cut into a rectangular area 21.
Disconnect each time. Thereby, as shown in FIG. 1, it is possible to obtain a horizontally long convex sealing seal 1 (sheet-shaped electric resistor) in which the width of the connector connection portion 12 is reduced by one step.

In the resistance value measuring step, a tester or the like is used.
The resistance value between the first energizing part 8 and the second energizing part 9, that is, the resistance value of the circuit pattern 3 is actually measured for each of the obtained seals 1. In the cutting portion selection step, the adjustment resistance layer 16 to be disconnected is selected based on the actually measured resistance value. Here, since the adjustment resistance layer 16 is provided locally, it has a specified resistance value. Therefore, based on the difference between the resistance value specified by the circuit pattern 3 and the actually measured resistance value, it is possible to determine which of the adjustment resistance layers 16 should be disconnected.

In the trimming step, the connecting portion 10 that is connected to the selected adjustment resistance layer 16 is disconnected, and the connection is cut off. As means for disconnecting, for example, as shown in FIG. 1, a punch hole 22 may be formed on the connecting portion 10 to cut off conduction, or a hot pen having a high-temperature tip such as a soldering iron. The connection portion 10 may be burned off. That is, the means for disconnecting can take any configuration. Note that the adjustment resistance layer 16 itself may be cut.

When the trimming process is completed, a final inspection is performed. In this final inspection, the resistance value of the circuit pattern 3 is actually measured again, and the presence or absence of other abnormalities is inspected to determine whether the circuit pattern 3 can be shipped.

The above-described resistance value measurement step, cut section selection step, and trimming step may be performed as steps prior to the cutting step. That is, the rectangular area 21
Before disconnecting each time, actual measurement of the resistance value of the circuit pattern 3, selection of the adjustment resistance layer 16 to be disconnected, disconnection of the selected adjustment resistance layer 16, etc. may be performed. In addition, even when an adhesive layer is provided on the back surface of the seal base material 2, the adhesive layer forming step of forming the adhesive layer is performed in a step before the cutting step, that is, in a state before cutting into the rectangular region 21. This is convenient because the forming operation of applying and attaching the adhesive layer can be performed only once. The circuit pattern 3 may be printed on the base paper 20 on which the adhesive layer has been formed in advance.

In the illustrated seal 1, the surface of the seal base material 2 (base paper 20) is covered with the coating layer 4, but the surface may be covered by a lamination process. In any case, it is desirable to form a protective layer that covers the circuit pattern 5.

In the above-described manufacturing method, the steps in the case of manufacturing the sealing seal 1 having the single-specification circuit pattern 3 (that is, one type of resistance value) have been described.
The same process may be applied to the case of manufacturing the sealing seal 1 (sheet-like electric resistor) having the circuit patterns 3 having different specifications (that is, different resistance values). That is, in the above-described cutting portion selection step, so that the resistance value conforms to the specifications,
What is necessary is just to select the adjustment resistance layer 16 to be disconnected based on the actually measured resistance value. In addition, it is preferable that the resistance value measuring step in the present invention is performed every time for every sheet-shaped electric resistor (sealing seal 1), but the present invention is not limited to this. If the resistance value measured in the resistance value measuring step is within a predetermined error range, it goes without saying that the trimming step is passed.

The sealing seal 1 is configured to protect the surface of the sealing substrate 2 such as the circuit pattern 3 by the coating layer 4 or the laminating layer. As shown in FIG. After separately providing the seal base 2 on which the pattern 3 and the like are formed and the protective sheet 25 formed of a film larger than the seal base 2, the seal base 2 is attached to the opening / closing portion of the object to be sealed. The protection sheet 25 may be attached so as to cover the surface of the base material 2.

The size, shape, and the like of the sealing seal 1 can be arbitrarily determined, such as length and width.
For example, Ru can or in a circular shape or a horizontally long rectangular shape.

[0046]

According to the present invention as described above, the following effects can be obtained. According to the invention described in claim 1, the station
Conductor part with a partially defective part in the middle from an electrically good conductor
Printed on the surface of the insulating substrate with the first conductive ink
And the second conductive ink containing an electric resistor
The circuit pattern is printed by printing a resistance applying portion on the defective portion.
Formed on the side edge of the insulating base material,
Form a notch that extends to the front, and shape the above-mentioned conductor
Bent so that it surrounds the tip of the cut
Therefore, variations in the thickness and width of the conductor or insulation base
Penetration into the wire does not affect the resistance of the circuit pattern.
The resistance application part arranged in the defective part of the part is the resistance of the circuit pattern.
Affects the value. Then, the resistance application portion is the same and-missing part
The thickness of the printed resistance application part
There is some variation in pod width or the insulating base material is liquid
Even if the material has permeability, the second conductive ink
Changes in resistance due to variations in thickness and width of
Less change in resistance value due to penetration or bleeding into conductive substrates
can do. Therefore, the resistance value of the circuit pattern
Can easily be kept within the specified range, and the yield
Quality and quality can be stabilized.

In addition, a wrongdoer can use this seal type sensor.
To apply a pulling force to the seal-type sensor
And the seal type sensor tries to remain on the sticking target side.
The stress concentration occurs at the tip of the cut, and the insulating base material breaks.
And the broken part of the insulating base material crosses the conductor
Is disconnected. As a result, the electrical continuity of the circuit pattern
Is cut or the resistance of the circuit pattern changes.
Since the electrical state changes, it is possible to determine the presence or absence of fraud.
You. At this time, bend the conductive wire part into a U-shape
It is placed close so as to surround the
When a tensile force is applied to the sensor, breakage from the tip of the cut
Intersects the conductor immediately. Because of this, there is no fraud
Can be determined more reliably.

According to the second aspect of the present invention, the conductive wire
Section is a plurality of connection sections connecting one end and the other end in parallel
And the lacking part in the middle of each connecting part,
Cut off electrical continuity between one end and the other end by each defect
The resistance applying section defines the resistance value of the circuit pattern.
Main resistance application section and the measured resistance value to the specified value.
And the adjustment resistance applying part for adjusting
At times, the electrical continuity of the connection is cut off.
Thus, the resistance value of the circuit pattern can be changed.
As a result, the resistance value of the formed circuit pattern becomes the specified resistance.
Even if it deviates from the resistance value, the specified resistance
Value can be adjusted. Also, one circuit pattern
To manufacture multiple specification circuit patterns with different resistance values
be able to. Therefore, the yield during manufacturing is improved
And circuit patterns of different specifications in the same process.
Can be manufactured, lowering manufacturing costs
it can.

According to the third aspect of the present invention, the notch
Since the tip is T-shaped, the tip of the seal sensor
When tension is applied, breakage from the tip of the notch
Intersects with the line. For this reason, it is more reliable
Can be determined.

According to the fourth aspect of the present invention, the circuit
A protective layer covering the pattern is formed on the surface of the insulating substrate.
So, a fraudster tries to do illegal work,
If you try to peel the layer, this peeling action will cause the circuit
If the electrical continuity of the turn is broken or the resistance value changes,
Or For this reason, it is possible to more reliably determine whether there is fraud.
it can.

[Brief description of the drawings]

FIG. 1 is a front view of a sealing seal.

FIG. 2 is a diagram illustrating a base paper used when manufacturing a sealing seal.

FIG. 3 is a diagram illustrating a state in which a conductive wire pattern is formed on a base paper (seal base material) as an insulating base material.

FIGS. 4A and 4B are diagrams illustrating a state in which a resistance layer is formed on a base paper (seal base material) on which a conductive wire pattern is formed, where FIG. 4A is a front view and FIG. It is an expanded sectional view.

FIG. 5 is a diagram illustrating an example in which a sealing seal is configured by a seal base material and a protective sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealing seal 2 Seal base material 3 Circuit pattern 4 Coating layer 5 Conductor pattern 6 Resistive layer 7 First deficient part 8 First conducting part 9 Second conducting part 10 Connecting part 11 Second deficient part 12 Connector connecting part 15 Main Resistance layer 16 Adjustment resistance layer 17 Notch 20 Base paper 21 Rectangular area 22 Punch hole 25 Protection sheet

Claims (4)

(57) [Claims] 1. The surface of a sheet-like insulating base material that is easily broken.
A seal type sensor with a circuit pattern of a predetermined resistance value.
The conductor part having a local defect part in the middle is a good electrical conductor.
Mark on the surface of the insulating substrate with the first conductive ink comprising
Printing and a second conductive ink containing an electric resistor
The resistance applying portion is printed on the defective portion by the circuit pattern
Is formed on the side edge of the insulating base material from the outer peripheral edge to just before the conductor.
An extended notch is formed, and the conductor is bent in a U-shape to surround the tip of the notch.
Seal type sensor, which is arranged close to
Sa. 2. The conductor portion is connected in parallel between one end and the other end.
Multiple connections to connect to
The above-mentioned lacking part is provided, and one end and the other end
The electrical connection between the two is cut off, and the resistance applying section is used to define the resistance value of the circuit pattern.
Adjust the measured resistance value to the specified value.
And an adjustment resistance applying section for
The seal-type sensor according to claim 1. 3. A tip portion of the cut portion is T-shaped.
The seal type cell according to claim 1 or 2,
Sensor. 4. A protective layer covering the circuit pattern is removed.
2. The method according to claim 1, wherein the surface is formed on the surface of the rim substrate.
The seal-type sensor according to claim 3.