JPS53107850A - Toner concentration detector of developing powder - Google Patents

Toner concentration detector of developing powder

Info

Publication number
JPS53107850A
JPS53107850A JP2158977A JP2158977A JPS53107850A JP S53107850 A JPS53107850 A JP S53107850A JP 2158977 A JP2158977 A JP 2158977A JP 2158977 A JP2158977 A JP 2158977A JP S53107850 A JPS53107850 A JP S53107850A
Authority
JP
Japan
Prior art keywords
toner concentration
concentration detector
developing powder
developing
powder
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
JP2158977A
Other languages
Japanese (ja)
Other versions
JPS5514434B2 (en
Inventor
Isamu Terajima
Makoto Iwamatsu
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2158977A priority Critical patent/JPS53107850A/en
Publication of JPS53107850A publication Critical patent/JPS53107850A/en
Publication of JPS5514434B2 publication Critical patent/JPS5514434B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To perform highly accurate concentration detection by detecting the inductance of a magnetic brush in a state where the magnetical restraint by a magnetic roll is released temporarily.
JP2158977A 1977-03-02 1977-03-02 Toner concentration detector of developing powder Granted JPS53107850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2158977A JPS53107850A (en) 1977-03-02 1977-03-02 Toner concentration detector of developing powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2158977A JPS53107850A (en) 1977-03-02 1977-03-02 Toner concentration detector of developing powder

Publications (2)

Publication Number Publication Date
JPS53107850A true JPS53107850A (en) 1978-09-20
JPS5514434B2 JPS5514434B2 (en) 1980-04-16

Family

ID=12059218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2158977A Granted JPS53107850A (en) 1977-03-02 1977-03-02 Toner concentration detector of developing powder

Country Status (1)

Country Link
JP (1) JPS53107850A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232375A (en) * 1983-06-16 1984-12-27 Hitachi Metals Ltd Developing device
JPS6157967A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller
US5095339A (en) * 1988-01-27 1992-03-10 Hitachi, Ltd. Developing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59232375A (en) * 1983-06-16 1984-12-27 Hitachi Metals Ltd Developing device
JPS6157967A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller
JPH045386B2 (en) * 1984-08-29 1992-01-31
US5095339A (en) * 1988-01-27 1992-03-10 Hitachi, Ltd. Developing apparatus

Also Published As

Publication number Publication date
JPS5514434B2 (en) 1980-04-16

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