JPH0275561U - - Google Patents

Info

Publication number
JPH0275561U
JPH0275561U JP15424788U JP15424788U JPH0275561U JP H0275561 U JPH0275561 U JP H0275561U JP 15424788 U JP15424788 U JP 15424788U JP 15424788 U JP15424788 U JP 15424788U JP H0275561 U JPH0275561 U JP H0275561U
Authority
JP
Japan
Prior art keywords
rbra
oscillator
developer
toner concentration
diodes
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
Application number
JP15424788U
Other languages
English (en)
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 filed Critical
Priority to JP15424788U priority Critical patent/JPH0275561U/ja
Publication of JPH0275561U publication Critical patent/JPH0275561U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】
第１図は本考案の実施例を示す線図的構成説明
図、第２図は従来の現像機のトナー濃度検出装置
の一例を示す説明図、第３図は従来の発振器の説
明図である。

Claims (1)

  1. 【実用新案登録請求の範囲】 現像剤中のコイルに発振器４より電圧を印加し
    、そのコイルのトナー濃度変化によるインダクタ
    ンス変化を誘起電圧によつて検出することでトナ
    ー濃度を検出する現像剤のトナー濃度検出装置に
    おいて、前記発振器４をクワドラチヤ型の発振器
    とすると共に、その出力端を複数のダイオードを
    介して電源に接続し、そのダイオードの数ｎ及び
    抵抗値Ｒａ，Ｒｂを、ピーク電圧を算出する ±（−ＲｂＲａ×Ｖｃｃ＋ＶＢＥ（ｎ×ＲｂＲ
    ａ−Ｒａ＋ＲｂＲａ） 式における（ｎ×ＲｂＲａ−Ｒａ＋ＲｂＲａ）
    が略ゼロとなる値としたことを特徴とする現像剤
    のトナー濃度検出装置用発振器。
JP15424788U 1988-11-29 1988-11-29 Pending JPH0275561U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15424788U JPH0275561U (ja) 1988-11-29 1988-11-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15424788U JPH0275561U (ja) 1988-11-29 1988-11-29

Publications (1)

Publication Number Publication Date
JPH0275561U true JPH0275561U (ja) 1990-06-08

Family

ID=31430814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15424788U Pending JPH0275561U (ja) 1988-11-29 1988-11-29

Country Status (1)

Country Link
JP (1) JPH0275561U (ja)

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