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JPS58178153U - Toner concentration detection device - Google Patents

Toner concentration detection device

Info

Publication number
JPS58178153U
JPS58178153U JP7386482U JP7386482U JPS58178153U JP S58178153 U JPS58178153 U JP S58178153U JP 7386482 U JP7386482 U JP 7386482U JP 7386482 U JP7386482 U JP 7386482U JP S58178153 U JPS58178153 U JP S58178153U
Authority
JP
Japan
Prior art keywords
toner concentration
detection device
toner
concentration detection
detection coil
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.)
Granted
Application number
JP7386482U
Other languages
Japanese (ja)
Other versions
JPH0210539Y2 (en
Inventor
正 三井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP7386482U priority Critical patent/JPS58178153U/en
Publication of JPS58178153U publication Critical patent/JPS58178153U/en
Application granted granted Critical
Publication of JPH0210539Y2 publication Critical patent/JPH0210539Y2/ja
Granted legal-status Critical Current

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Landscapes

  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係るトナー検出装置の構成を　　　、
示す図、第２図及び第３図はトナー濃度に対する・検出
コイルのインダクタンス及び実効抵抗の変化。 率特性の実測データをグラフ化して示す図である。 １−・・・・・容器、２・・・・・・現像材、３・・・
・・・検出コイル、４・・・・・・コア。Figure 1 shows the configuration of the toner detection device according to the present invention.
The diagrams shown in FIGS. 2 and 3 show changes in the inductance and effective resistance of the detection coil with respect to toner concentration. FIG. 3 is a graph showing actually measured data of rate characteristics. 1-...container, 2...developing material, 3...
...Detection coil, 4...Core.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）磁性キャリアと絶縁性トナーとを含む現像材の前
記トナー濃度を検出、する検出コイルを備え１、該検出
コイルの実効抵抗あ変化より前記トナー濃度を検出する
ことを特徴とするトナー濃度検出装置。(1) The toner concentration includes a detection coil for detecting the toner concentration of a developing material containing a magnetic carrier and an insulating toner, and the toner concentration is detected from a change in effective resistance of the detection coil. Detection device. （２）前記検出コイルは、壺型コアにコイルを巻装し、
開放磁路側を絶縁フィルムを介して前記現像剤に対向さ
せたもので成ることを特徴とする実用新案登録請求の範
囲第１項に記載の１ナ一濃度検出装置。　　　−(2) The detection coil has a coil wound around a pot-shaped core,
1. The single concentration detection device according to claim 1, wherein the open magnetic path side faces the developer with an insulating film interposed therebetween. −
JP7386482U 1982-05-20 1982-05-20 Toner concentration detection device Granted JPS58178153U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7386482U JPS58178153U (en) 1982-05-20 1982-05-20 Toner concentration detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7386482U JPS58178153U (en) 1982-05-20 1982-05-20 Toner concentration detection device

Publications (2)

Publication Number Publication Date
JPS58178153U true JPS58178153U (en) 1983-11-29
JPH0210539Y2 JPH0210539Y2 (en) 1990-03-15

Family

ID=30083348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7386482U Granted JPS58178153U (en) 1982-05-20 1982-05-20 Toner concentration detection device

Country Status (1)

Country Link
JP (1) JPS58178153U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414242A (en) * 1977-07-04 1979-02-02 Hitachi Ltd Measuring method for toner concentration in developer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414242A (en) * 1977-07-04 1979-02-02 Hitachi Ltd Measuring method for toner concentration in developer

Also Published As

Publication number Publication date
JPH0210539Y2 (en) 1990-03-15

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