JPS588126B2 - Electret manufacturing method - Google Patents
Electret manufacturing methodInfo
- Publication number
- JPS588126B2 JPS588126B2 JP51160583A JP16058376A JPS588126B2 JP S588126 B2 JPS588126 B2 JP S588126B2 JP 51160583 A JP51160583 A JP 51160583A JP 16058376 A JP16058376 A JP 16058376A JP S588126 B2 JPS588126 B2 JP S588126B2
- Authority
- JP
- Japan
- Prior art keywords
- electret
- control electrode
- amount
- charge
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Description
【発明の詳細な説明】
本発明はコロナ放電によるエレクトレット製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing electret by corona discharge.
第１図は従来のコロナ放電によるエレクトレット製造方
法を示すものである。FIG. 1 shows a conventional method for producing electrets using corona discharge.
この方法においてはナイフエツジ１を放電用電極とし、
これと接地用ステージ２との間にエレクトレット化しよ
うとする材料４を配置しコロナ放電を行なっている。In this method, the knife edge 1 is used as a discharge electrode,
A material 4 to be made into an electret is placed between this and the grounding stage 2, and corona discharge is performed.
しかしこの方法においては気温、湿度等により、帯電量
が変化したり、コロナ放電から火花放電に移行しやすく
、一定な電荷量のエレクトレットを得ることが困難であ
る。However, in this method, the amount of charge changes depending on temperature, humidity, etc., and it is easy to shift from corona discharge to spark discharge, making it difficult to obtain electrets with a constant amount of charge.
本発明はこのような欠点を除去したもので、以下にその
実施例について説明する。The present invention eliminates these drawbacks, and examples thereof will be described below.
第２図に示した方法は放電用高圧電源１４が接続される
主電極と接地用ステージ１２の他に第２の制御用電極１
３を設け、この制御用電極１３の電位を表面電荷測定器
１５の信号に対応して、エレクトレットの電荷量を一定
ならしめるように電圧発生器１６により電圧を変化させ
るものである。The method shown in FIG.
3 is provided, and the voltage of the control electrode 13 is varied by a voltage generator 16 in response to a signal from a surface charge measuring device 15 so as to keep the amount of charge of the electret constant.
ところで制御用電極の電位とエレクトレット電荷量との
関係は第３図に示す通りであり、図から明らかなように
制御用電極１３により材料１７のエレクトレットの電荷
量を制御することができる。Incidentally, the relationship between the potential of the control electrode and the amount of electret charge is as shown in FIG. 3, and as is clear from the figure, the amount of charge of the electret of the material 17 can be controlled by the control electrode 13.
すなわち材料１７をステージ１２上に配置すれば、表面
電荷測定器１５の測定出力に応じて電極１３の電位が制
御され、コロナ放電量が制御され、気温、湿度等の影響
を受けることなく安定にエレクトレットを製造すること
ができる。That is, when the material 17 is placed on the stage 12, the potential of the electrode 13 is controlled according to the measurement output of the surface charge measuring device 15, and the amount of corona discharge is controlled, making it stable without being affected by temperature, humidity, etc. Electrets can be produced.
また第４図はエレクトレット電荷量を一定ならしめるよ
うに制御用電極１３を作動させた時の着電量と日間変化
を示す図である。Further, FIG. 4 is a diagram showing the amount of charge deposited and daily changes when the control electrode 13 is operated so as to keep the amount of electret charge constant.
明らかに従来の方法によるＡよりこの実施例の方法によ
るＢの方がすぐれていることがわかる。It can be seen that method B according to this embodiment is clearly superior to method A according to the conventional method.
また火花放電が起っても本方法によれば、火花放電は制
御用電極１３と主電極１１との間でおこり、制御用電極
１３と接地用ステージ１２の間には火花放電は入りこま
ず、エレクトレット材料は何らの損傷もうけない特徴を
有し、実用上有利である。Furthermore, even if a spark discharge occurs, according to this method, the spark discharge occurs between the control electrode 13 and the main electrode 11, and the spark discharge does not enter between the control electrode 13 and the grounding stage 12. , electret materials have the characteristic of not causing any damage and are advantageous in practice.
上記実施例より明らかなように本発明によれば、エレク
トレット材に与えられるコロナ放電量は巧みに制御され
、気温、湿度等による影響を受けることなく、安定した
エレクトレット化を行なうことができる。As is clear from the above examples, according to the present invention, the amount of corona discharge applied to the electret material is skillfully controlled, and stable electretization can be performed without being affected by temperature, humidity, etc.
第１図は従来のエレクトレット製造方法を用いた装置の
側面図、第２図は本発明の一実施例によるエレクトレッ
ト製造方法を用いた装置の側面図、第３図は制御電極の
電位とエレクトレット電荷量との関係を示す図、第４図
は着電量と日間変化の関係を示した図である。
１１・・・・・・主電極、１２・・・・・・接地用ステ
ージ、１３・・・・・・制御用電極。FIG. 1 is a side view of an apparatus using a conventional electret manufacturing method, FIG. 2 is a side view of an apparatus using an electret manufacturing method according to an embodiment of the present invention, and FIG. 3 is a diagram showing the potential of the control electrode and the electret charge. FIG. 4 is a diagram showing the relationship between the amount of electrification and daily variation. 11...Main electrode, 12...Grounding stage, 13...Control electrode.
Claims (1)
け、前記接地用ステージ上に設けた表面電荷測定器の出
力により前記制御用電極の電位を制御し、エレクトレッ
トを製造するようにしたことを特徴とするエレクトレッ
ト製造方法。1. In addition to the discharge electrode, a control electrode is provided on the grounding stage, and the potential of the control electrode is controlled by the output of a surface charge measuring device provided on the grounding stage to manufacture the electret. An electret manufacturing method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51160583A JPS588126B2 (en) | 1976-12-27 | 1976-12-27 | Electret manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51160583A JPS588126B2 (en) | 1976-12-27 | 1976-12-27 | Electret manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5381999A JPS5381999A (en) | 1978-07-19 |
| JPS588126B2 true JPS588126B2 (en) | 1983-02-14 |
Family
ID=15718086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51160583A Expired JPS588126B2 (en) | 1976-12-27 | 1976-12-27 | Electret manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS588126B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035957Y2 (en) * | 1979-03-29 | 1985-10-25 | 三菱電機株式会社 | cathode ray tube |
| JP2016219687A (en) * | 2015-05-25 | 2016-12-22 | 一般財団法人小林理学研究所 | Polling device and polling method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4843195A (en) * | 1971-10-01 | 1973-06-22 | ||
| JPS5185451A (en) * | 1974-12-10 | 1976-07-27 | Anvar |
-
1976
- 1976-12-27 JP JP51160583A patent/JPS588126B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4843195A (en) * | 1971-10-01 | 1973-06-22 | ||
| JPS5185451A (en) * | 1974-12-10 | 1976-07-27 | Anvar |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5381999A (en) | 1978-07-19 |
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