[go: up one dir, main page]

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

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

Similar Documents

Publication Publication Date Title
JPS5349437A (en) Toner density detector
JPS5341420A (en) Immunochemically measuring methoa of hapten
JPS5398840A (en) Detection of deterioration state of developing agnet
JPS53126944A (en) Developing device using developing powder
JPS52131729A (en) Toner concentration detection circuit
JPS53129658A (en) Detecting method of toner concentration in two-component type developer
JPS5414242A (en) Measuring method for toner concentration in developer
DE3063829D1 (en) Improved electrographic development method for use with partially-conductive developer
JPS533237A (en) One component type developing toner
JPS5329157A (en) Threeepoint roundness measuring method
JPS5367438A (en) Magnet roll for use in magnetic toner
JPS5438131A (en) Toner concentration detecting method of dry type two component developer
JPS5381124A (en) Magnetic toner particles for use in development
JPS53110848A (en) Detector of residual amount of developer
JPS5349485A (en) Apparatus for measuring temperature of rotor
JPS5425786A (en) Repeated bending tester
JPS547351A (en) Reference density controller for toner density detector
JPS52123241A (en) Adjustment for mixture ratio detector for developing toners
JPS5412840A (en) Measuring method for surface potential of electrophotographic photoreceptor by time series
JPS5376040A (en) Developing device by magnetic toner
JPS54640A (en) Mixture ratio detector for developing toners
JPS533366A (en) Flow velocity measurement
JPS5380254A (en) Running locus measuring apparatus
JPS53122465A (en) Magnetic flux density measuring apparatus
JPS52145042A (en) Detection of toner density