JPS5414242A - Measuring method for toner concentration in developer - Google Patents

Measuring method for toner concentration in developer

Info

Publication number
JPS5414242A
JPS5414242A JP7911377A JP7911377A JPS5414242A JP S5414242 A JPS5414242 A JP S5414242A JP 7911377 A JP7911377 A JP 7911377A JP 7911377 A JP7911377 A JP 7911377A JP S5414242 A JPS5414242 A JP S5414242A
Authority
JP
Japan
Prior art keywords
toner concentration
developer
measuring method
change
composing
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
JP7911377A
Other languages
Japanese (ja)
Other versions
JPS5514435B2 (en
Inventor
Minoru Honda
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.)
Koki Holdings Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Koki Co 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, Hitachi Koki Co Ltd filed Critical Hitachi Ltd
Priority to JP7911377A priority Critical patent/JPS5414242A/en
Publication of JPS5414242A publication Critical patent/JPS5414242A/en
Publication of JPS5514435B2 publication Critical patent/JPS5514435B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To enable toner concentration to be measured precisely in a wide range, by taking out change of toner concentration in a developing agent as change of coil inductance and electrostatic capacity, and by composing a resonance circuit with these 2 values.
JP7911377A 1977-07-04 1977-07-04 Measuring method for toner concentration in developer Granted JPS5414242A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7911377A JPS5414242A (en) 1977-07-04 1977-07-04 Measuring method for toner concentration in developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7911377A JPS5414242A (en) 1977-07-04 1977-07-04 Measuring method for toner concentration in developer

Publications (2)

Publication Number Publication Date
JPS5414242A true JPS5414242A (en) 1979-02-02
JPS5514435B2 JPS5514435B2 (en) 1980-04-16

Family

ID=13680841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7911377A Granted JPS5414242A (en) 1977-07-04 1977-07-04 Measuring method for toner concentration in developer

Country Status (1)

Country Link
JP (1) JPS5414242A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5366522A (en) * 1977-11-25 1978-06-14 Hitachi Ltd Full-wave rectifying device
JPS58178153U (en) * 1982-05-20 1983-11-29 ティーディーケイ株式会社 Toner concentration detection device
JPS58182950U (en) * 1982-05-31 1983-12-06 ティーディーケイ株式会社 Developer detection device
JP2002005892A (en) * 2000-04-10 2002-01-09 Randox Lab Ltd Magnetic particle detection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938730A (en) * 1972-08-24 1974-04-11
JPS5063452U (en) * 1973-10-12 1975-06-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938730A (en) * 1972-08-24 1974-04-11
JPS5063452U (en) * 1973-10-12 1975-06-09

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5366522A (en) * 1977-11-25 1978-06-14 Hitachi Ltd Full-wave rectifying device
JPS5746217B2 (en) * 1977-11-25 1982-10-01
JPS58178153U (en) * 1982-05-20 1983-11-29 ティーディーケイ株式会社 Toner concentration detection device
JPH0210539Y2 (en) * 1982-05-20 1990-03-15
JPS58182950U (en) * 1982-05-31 1983-12-06 ティーディーケイ株式会社 Developer detection device
JP2002005892A (en) * 2000-04-10 2002-01-09 Randox Lab Ltd Magnetic particle detection

Also Published As

Publication number Publication date
JPS5514435B2 (en) 1980-04-16

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