JP2002076539A - Equipment, electrical substrate and method for inspecting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem tat the qualities of reused electrical substrates fluctuate when the substrates are classified with low classifying efficiency, because the usability of used electrical substrates is not discriminated easily at the time of classifying the substrates. SOLUTION: An indicating means which indicates the number of used times of a mounting substrate is installed to the substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric board and an apparatus provided with the electric board, and more particularly to recycling of the electric board. Representative examples of such equipment include computers, computer peripherals, copiers, facsimiles, printers, telephones, televisions, electric washing machines, air conditioners, and the like.

[0002]

2. Description of the Related Art (1) In some of the above-described devices, the electrical boards are reused, that is, used electrical boards are incorporated into new products and reused.

(2) The electrical components mounted on the electrical board are:
Many of them contain noble metals such as gold, silver, platinum and tungsten. To this end, processing of electrical equipment boards separated and recovered from equipment to extract and recycle noble metals has been performed.

(3) Lead, which is one of the components of the solder for connecting the circuits on the electrical board, is a harmful substance. Therefore, when the electrical board is discarded or recycled, Processing is a problem, and as a countermeasure against this problem, a solder that does not contain lead, which is a harmful substance,
A solder made of a silver / tin alloy or a solder made of a zinc / tin alloy is partially used.

[0005]

(1) Reuse of electrical boards In the process of reuse, conventionally, it has been inspected whether all the electrical boards that have been disassembled and sorted out can be reused. Therefore, there is a problem that the number of inspection targets increases and the work efficiency is low. Further, there is a problem that the quality of the separated reused electrical boards becomes uneven, and the reliability of the device in which the reused electrical boards are incorporated is reduced.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above-mentioned problem in reusing an electric board, and to improve the efficiency of separation of the reused electric board and the quality of the separated electric board. The purpose is to do.

[0007] (2) The circuit on the electrical board is an IC, a resistor,
It is composed of capacitors, printed wiring, wires connecting circuit elements and printed wiring, and the material constituting the circuit is ceramic, copper such as silicon wafer, copper, gold, silver, platinum, tungsten, etc. Not a few precious metals are used. These precious metals are recovered and recycled.

[0008] The electrical component board does not contain a noble metal,
Even if they are contained, there are various kinds such as those whose content does not reach the recovery cost and those whose content matches the recovery cost.
Conventionally, an electrical component board containing a noble metal has been separated based on the experience and intuition of an operator who separates the electrical component board. For this reason, there is a problem that the accuracy of the separation is low and the separation operation is not efficient.

A second object of the present invention is to solve the above-mentioned problem in recovery of a noble metal from a conventional electrical board.

[0010] (3) Lead contained in the waste material has become a problem when the substances contained in the electric board are recycled and the residue is discarded or when the electric board is discarded.

Although lead is a main component of the solder for connecting the wirings, a solder containing no lead, that is, a lead-free solder has been developed as a measure against the above-mentioned problem. However, since it is difficult to visually distinguish an electrical board having lead-containing solder from a solder containing no lead, that is, an electrical board having lead-free solder, it is necessary to classify the electrical board using lead-free solder. Was difficult. For this reason, there is a problem that the advantages of the lead-free solder are not fully utilized and the use of the lead-free solder does not progress.

A third object of the present invention is to facilitate the use of lead-free solder by facilitating discrimination of an electrical board having lead-free solder and to contribute to solving environmental problems related to solder. Aim.

[0013]

The object of the present invention described above is achieved by the following invention.

1. An electric board having a display means for displaying the number of times of use. 2. 2. The electrical board according to claim 1, wherein the display means comprises a hole for a jig for inspection.

3. 3. The electrical board according to the item 2, wherein the hole is circular. 4. 3. The electrical board according to the item 2, wherein the holes are elliptical.

5. 3. The electrical board according to the item 2, wherein the hole is rectangular. 6. An electric board having an area in which a display means for displaying the number of times of use can be provided.

[7] An apparatus provided with an electrical board having display means for displaying the number of times of use.

[8] 8. The apparatus according to the item 7, wherein the display means comprises a hole for a jig for inspection.

9. The apparatus according to claim 7, wherein the hole is circular. 10. The device of claim 7, wherein the hole is elliptical.

11. The device according to claim 7, wherein the hole is rectangular. 12. A device comprising an electrical board having an area in which a display means for displaying the number of times of use can be provided.

13. An electrical component, wherein a second hole is provided in a second position of the electrical component board in which a first hole for an inspection jig is provided in a first position, and the reuse electrical component board is inspected. Substrate inspection method.

14. An electric board comprising a noble metal and having a display means for indicating that the noble metal is contained.

[15] 15. The electrical board according to the above 14, wherein the display means displays the content of each type of noble metal contained.

16. The electrical substrate according to the above item 14 or 15, wherein the noble metal is at least one of gold, silver, platinum and tungsten.

17. 17. The electrical board according to claim 14, wherein the display unit is formed by silk printing.

18. 17. The electric board according to any one of 14 to 16, wherein the display means is formed by engraving the electric board.

19. The display means is formed by printing using oil-based ink.
7. The electrical board according to any one of 6.

20. An apparatus, comprising: an electrical board that includes a noble metal and has display means for indicating that the noble metal is contained.

21. 21. The apparatus according to the item 20, wherein the display means displays the content of each type of noble metal contained.

22. 22. The device according to the above item 20 or 21, wherein the noble metal is at least one of gold, silver, platinum and tungsten.

23. 23. The device according to any one of 20 to 22, wherein the display unit is formed by silk printing.

24. 23. The device according to any one of 20 to 22, wherein the display unit is formed by engraving the electrical board.

25. The display means is formed by printing using oil-based ink.
3. The device according to any one of 2.

26. An electric board, characterized by having a display means for distinguishing whether a lead-containing solder is used or a lead-free solder is used.

27. 27. The electrical board as described in 26 above, wherein the display means comprises a display means for displaying that a lead-free solder is used.

28. 28. The electric board according to the above item 26 or 27, wherein the display means comprises a display means for displaying that the lead-containing solder is used.

29. An apparatus provided with an electrical board having display means for distinguishing whether a lead-containing solder is used or a lead-free solder is used.

30. 30. The apparatus according to the above item 29, wherein the display means comprises a display means for displaying that a lead-free solder is used.

31. 31. The apparatus according to the above item 29 or 30, wherein the display means comprises a display means for displaying that a lead-containing solder is used.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) Embodiment 1 FIG. 1 shows an electric board according to Embodiment 1 of the present invention.

PB is an electrical board, and is provided with a circuit area PC in which circuit elements such as ICs, resistors, capacitors, and coils, printed wiring, and wiring wires are arranged. In the first embodiment, in addition to the circuit area PC, an area D for providing a hole for inserting an inspection jig (not shown) at the time of inspecting a reused electrical board is provided.

The illustrated electrical board PB is designed to be used three times. The holes A and B are not provided in the first use of the electrical board PB, that is, in the unused electrical board PB. In the second use, that is, in the first reuse, a first hole A for inspection of the re-used electrical board PB is drilled at the first position, and the inspection is performed. 3
At the time of the second use, that is, at the time of the second reuse, the hole A is provided in the electrical board PB. Then, in the third inspection for reuse, the second hole B is drilled at the second position and the inspection is performed. Therefore, in the case of an electrical board that can be used three times, holes A and B are formed in the electrical board separated by dismantling.
Is present, the electrical board PB is used three times and cannot be reused, and is not separated as a reusable part. As described above, the holes A and B are not only used for inspection but also a display means for indicating that the board is a reusable electrical board, and the reusable electrical parts are easily, quickly and accurately separated by the display means. It becomes possible.

Although the figure shows an example in which circular holes A and B are formed, it is possible to make the shape suitable for an inspection jig, such as an elliptical shape or a rectangular shape.

(2) Second Embodiment FIG. 2 is a view showing an electrical board according to a second embodiment of the present invention.

An area E is provided outside the circuit area PC of the electric board PB.
Is provided, and on the label F as a display unit attached to the region E, the type and the content of the noble metal included in the electric board PB are displayed by silk printing, such as “gold 70 mg”.

As the display means, the type and content of the noble metal are displayed by engraving instead of the label F. Alternatively, the type and content of the noble metal may be displayed directly in the region E using an oil-based ink. As the noble metal to be displayed,
There are gold, silver, platinum, tungsten and the like.

As described above, the electrical component substrate PB having a noble metal
Since the type and the content of the noble metal contained in are displayed, it is possible to clearly discriminate between an electrical board in which the noble metal can be reused and an electrical board in which the noble metal cannot be reused. In addition, since the content is displayed, even when there is a difference in the noble metal extraction technology, it is possible to perform separation corresponding to the technology, and the noble metal is effectively reused.

(3) Third Embodiment FIG. 3 is a view showing an electric board according to a third embodiment of the present invention.

The electrical board PB shown in the drawing is made of a lead such as a silver / tin alloy or a zinc / tin alloy without using a lead / tin alloy as a solder for connecting a printed wiring and a circuit element or a printed wiring and a connection line. A solder that does not contain, that is, a lead-free solder is used, and a region G is provided in addition to the circuit region PC of the electrical component board PB. "Use solder" is displayed by silk printing.

As the display means, instead of the label H, a display indicating the use of lead-free solder may be made by engraving. Further, "use of lead-free solder" may be displayed directly in the area G using oil-based ink. In addition, the electrical board PB using the lead-containing solder may not be displayed as in the past, but may be marked as “using lead-containing solder” and clearly distinguished from “using lead-free solder”. Good.

As shown in the drawing, the display of lead-free solder is performed to dispose of the electrical board using the lead-free solder, recover noble metal from the electrical board, and recycle the epoxy resin which is the support board of the electrical board. It is not necessary to treat lead in the process of converting to lead, so that it is possible to sufficiently bring out the function of preventing lead-free solder from environmental pollution.

[0052]

According to any one of the first to thirteenth aspects of the present invention, it is possible to efficiently sort a re-used electrical board, and to improve the quality of the collected re-used electrical board. Reuse is promoted.

According to the second or eighth aspect of the present invention, the display means is provided without providing any additional material for displaying the number of times of use and in connection with the inspection process. Impurities are prevented from being mixed, and the indication of reuse is reliably performed.

According to any one of the fourteenth to twenty-fifth aspects of the present invention, the separation of an electrical substrate containing a noble metal is easy, quick and accurate, and the recycling of the electrical substrate is promoted.

According to the invention of claim 15 or 21, since the content of the noble metal can be easily known, it is possible to separate the electrical boards according to the noble metal recovery technology, and the recycling of the electrical boards is further promoted. Is done.

According to any one of the twenty-sixth to thirty-first aspects, the use of lead-free solder developed as a measure against the problem of lead contained in waste is promoted, which can contribute to the preservation of the global environment.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an electrical board according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating an electrical board according to a second embodiment of the present invention;

FIG. 3 is a diagram illustrating an electrical board according to a third embodiment of the present invention;

[Explanation of symbols]

 A, B holes D, E, G area F, H label PB Electrical board PC circuit area

Claims (31)

[Claims] 1. An electric board having a display means for displaying the number of times of use. 2. The electric board according to claim 1, wherein the display means comprises a hole for a jig for inspection. 3. The electrical board according to claim 2, wherein the holes are circular. 4. The electrical board according to claim 2, wherein the holes are elliptical. 5. The electrical board according to claim 2, wherein the hole is rectangular. 6. An electric board having an area in which a display means for displaying the number of times of use can be provided. 7. An apparatus provided with an electrical board having display means for displaying the number of times of use. 8. The apparatus according to claim 7, wherein said display means comprises a hole for an inspection jig. 9. The device according to claim 7, wherein said holes are circular. 10. The device according to claim 7, wherein said holes are elliptical. 11. The apparatus according to claim 7, wherein said holes are rectangular. 12. An apparatus having an electrical board having an area in which a display means for displaying the number of times of use can be provided. 13. A first position for an inspection jig in a first position.
A second hole is provided at a second position of the electrical board provided with the hole, and the reused electrical board is inspected. 14. An electrical board comprising a noble metal and having display means for indicating that the noble metal is contained. 15. The electrical board according to claim 14, wherein said display means displays the content of each type of noble metal contained. 16. The electrical board according to claim 14, wherein the noble metal is at least one of gold, silver, platinum, and tungsten. 17. The electrical board according to claim 14, wherein the display unit is formed by silk printing. 18. The electric board according to claim 14, wherein the display means is formed by engraving the electric board. 19. The display device according to claim 14, wherein said display means is formed by printing using oil-based ink.
7. The electrical board according to any one of 6. 20. An apparatus characterized by comprising an electrical board containing a noble metal and having display means for indicating that the noble metal is contained. 21. The apparatus according to claim 20, wherein said display means displays the content of each type of noble metal contained. 22. The apparatus according to claim 20, wherein the noble metal is at least one of gold, silver, platinum, and tungsten. 23. The apparatus according to claim 20, wherein said display means is formed by silk printing. 24. The apparatus according to claim 20, wherein said display means is formed by engraving said electric board. 25. The display device according to claim 20, wherein said display means is formed by printing using oil-based ink.
3. The device according to any one of 2. 26. An electric board having a display means for distinguishing whether a lead-containing solder is used or a lead-free solder is used. 27. The electric board according to claim 26, wherein the display means comprises a display means for displaying that lead-free solder is used. 28. The electric board according to claim 26, wherein the display means comprises a display means for displaying that lead-containing solder is used. 29. An apparatus provided with an electric board having display means for distinguishing whether a lead-containing solder is used or a lead-free solder is used. 30. The apparatus according to claim 29, wherein said display means comprises a display means for displaying that a lead-free solder is being used. 31. The apparatus according to claim 29, wherein said display means comprises display means for displaying that lead-containing solder is used.