JPH0373955U - - Google Patents
Info
- Publication number
- JPH0373955U JPH0373955U JP13617789U JP13617789U JPH0373955U JP H0373955 U JPH0373955 U JP H0373955U JP 13617789 U JP13617789 U JP 13617789U JP 13617789 U JP13617789 U JP 13617789U JP H0373955 U JPH0373955 U JP H0373955U
- Authority
- JP
- Japan
- Prior art keywords
- coil bobbin
- toner
- sleeve
- coil
- open end
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の第１実施例におけるヘツド部
の断面図（コア有）、第２図は第２実施例におけ
るヘツド部の断面図（コアなし）、第３図は従来
の差動トランス形トナーセンサの原理図、第４図
は従来の位相弁別方式によるトナーセンサのブロ
ツク図、第５図は従来のトナーセンサの平面図、
第６図は第５図のＸ−Ｙ方向断面図（カバー有）
、第７図は第５図のＸ−Ｙ方向におけるヘツド部
の断面図（コア有）、第８図は第５図のＸ−Ｙ方
向におけるヘツド部の断面図（コアなし）である
。
１……ケース、４……プリント配線板、８……
リード線、９……接続線、１０……コイルボビン
、１２……コイル、１７……ヘツド部、１８……
鍔、１９……固着面、２０……スリーブ。
Fig. 1 is a sectional view of the head section in the first embodiment of the present invention (with core), Fig. 2 is a sectional view of the head section in the second embodiment (without core), and Fig. 3 is a conventional differential transformer. Figure 4 is a block diagram of a conventional phase discrimination type toner sensor, Figure 5 is a plan view of a conventional toner sensor,
Figure 6 is a cross-sectional view of Figure 5 in the X-Y direction (with cover)
, FIG. 7 is a cross-sectional view of the head portion in the X-Y direction of FIG. 5 (with core), and FIG. 8 is a cross-sectional view of the head portion in the X-Y direction of FIG. 5 (without core). 1... Case, 4... Printed wiring board, 8...
Lead wire, 9... Connection wire, 10... Coil bobbin, 12... Coil, 17... Head section, 18...
Tsuba, 19... fixed surface, 20... sleeve.
Claims (1)
コイル１２を設け、 トナー濃度、あるいはトナー残量等を、透磁率
の変化として検出するトナーセンサにおいて、 上記ヘツド部１７に、 ケース１と一体に形成され、ヘツド部の先端方
向へ延びた開放端を有し、内部が空胴のスリーブ
２０を設けると共に、 上記コイルボビン１０の鍔の内、ヘツド部１７
の先端でトナーと接する側の一方の鍔１８の径を
、コイルボビン１０の他の形よりも大径に形成し
、 上記コイルボビン１０を、スリーブ２０内に収
納した状態で、スリーブ２０の開放端と、コイル
ボビン１０に形成した一方の大径の鍔１８の周辺
部とを固着したことを特徴とするトナーセンサ。[Claims for Utility Model Registration] A toner sensor in which a coil 12 wound around a coil bobbin 10 is provided in the head part 17 and detects toner concentration or remaining amount of toner as a change in magnetic permeability. , a sleeve 20 is formed integrally with the case 1, has an open end extending toward the distal end of the head portion, and is hollow inside;
The diameter of one of the flanges 18 on the side that contacts the toner at the tip of the coil bobbin 10 is formed to be larger than the other shape of the coil bobbin 10, and when the coil bobbin 10 is housed in the sleeve 20, it is connected to the open end of the sleeve 20. , a toner sensor characterized in that a peripheral portion of one large-diameter flange 18 formed on a coil bobbin 10 is fixed to the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13617789U JPH0373955U (en) | 1989-11-24 | 1989-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13617789U JPH0373955U (en) | 1989-11-24 | 1989-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0373955U true JPH0373955U (en) | 1991-07-25 |
Family
ID=31683400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13617789U Pending JPH0373955U (en) | 1989-11-24 | 1989-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0373955U (en) |
-
1989
- 1989-11-24 JP JP13617789U patent/JPH0373955U/ja active Pending