JPH0371067B2 - - Google Patents

Info

Publication number
JPH0371067B2
JPH0371067B2 JP59281383A JP28138384A JPH0371067B2 JP H0371067 B2 JPH0371067 B2 JP H0371067B2 JP 59281383 A JP59281383 A JP 59281383A JP 28138384 A JP28138384 A JP 28138384A JP H0371067 B2 JPH0371067 B2 JP H0371067B2
Authority
JP
Japan
Prior art keywords
coil
circuit
differential
voltage
output
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.)
Expired - Lifetime
Application number
JP59281383A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61149858A (ja
Inventor
Shiro Nakagawa
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 JP59281383A priority Critical patent/JPS61149858A/ja
Publication of JPS61149858A publication Critical patent/JPS61149858A/ja
Publication of JPH0371067B2 publication Critical patent/JPH0371067B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Dry Development In Electrophotography (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
JP59281383A 1984-12-24 1984-12-24 磁気的検知装置 Granted JPS61149858A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59281383A JPS61149858A (ja) 1984-12-24 1984-12-24 磁気的検知装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59281383A JPS61149858A (ja) 1984-12-24 1984-12-24 磁気的検知装置

Publications (2)

Publication Number Publication Date
JPS61149858A JPS61149858A (ja) 1986-07-08
JPH0371067B2 true JPH0371067B2 (enrdf_load_stackoverflow) 1991-11-11

Family

ID=17638370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59281383A Granted JPS61149858A (ja) 1984-12-24 1984-12-24 磁気的検知装置

Country Status (1)

Country Link
JP (1) JPS61149858A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0782052A2 (en) 1995-12-28 1997-07-02 Fuji Xerox Co., Ltd. Image forming apparatus and method enabling toner amount control without actual measurement of toner characteristic
JP2009163336A (ja) * 2007-12-28 2009-07-23 Nidec Sankyo Corp 磁気パターン検出装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0633484Y2 (ja) * 1987-05-19 1994-08-31 ティーディーケイ株式会社 トナ−濃度検出装置
US5310425A (en) * 1987-05-19 1994-05-10 Tdk Corporation Toner concentration detector for a two-component developer
JPS6450080A (en) * 1987-08-21 1989-02-27 Tdk Corp Toner density controller
JPH0275664U (enrdf_load_stackoverflow) * 1988-11-30 1990-06-11
JP2599224B2 (ja) * 1991-03-29 1997-04-09 富士通株式会社 トナ−残量検出方法
JP5202032B2 (ja) * 2008-02-27 2013-06-05 キヤノン株式会社 磁性体検知装置及び画像形成装置
JP6590612B2 (ja) * 2015-09-16 2019-10-16 株式会社荏原製作所 渦電流センサ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0782052A2 (en) 1995-12-28 1997-07-02 Fuji Xerox Co., Ltd. Image forming apparatus and method enabling toner amount control without actual measurement of toner characteristic
JP2009163336A (ja) * 2007-12-28 2009-07-23 Nidec Sankyo Corp 磁気パターン検出装置

Also Published As

Publication number Publication date
JPS61149858A (ja) 1986-07-08

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term