JPH0472229B2 - - Google Patents

Info

Publication number
JPH0472229B2
JPH0472229B2 JP59111310A JP11131084A JPH0472229B2 JP H0472229 B2 JPH0472229 B2 JP H0472229B2 JP 59111310 A JP59111310 A JP 59111310A JP 11131084 A JP11131084 A JP 11131084A JP H0472229 B2 JPH0472229 B2 JP H0472229B2
Authority
JP
Japan
Prior art keywords
toner concentration
coil
sensor
output
differential 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
JP59111310A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60254170A (ja
Inventor
Yukimasa Moronowaki
Sadaji Tashiro
Osamu Shimoe
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP11131084A priority Critical patent/JPS60254170A/ja
Publication of JPS60254170A publication Critical patent/JPS60254170A/ja
Publication of JPH0472229B2 publication Critical patent/JPH0472229B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Dry Development In Electrophotography (AREA)
JP11131084A 1984-05-31 1984-05-31 トナ−濃度等のセンサ− Granted JPS60254170A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11131084A JPS60254170A (ja) 1984-05-31 1984-05-31 トナ−濃度等のセンサ−

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11131084A JPS60254170A (ja) 1984-05-31 1984-05-31 トナ−濃度等のセンサ−

Publications (2)

Publication Number Publication Date
JPS60254170A JPS60254170A (ja) 1985-12-14
JPH0472229B2 true JPH0472229B2 (enrdf_load_stackoverflow) 1992-11-17

Family

ID=14557986

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11131084A Granted JPS60254170A (ja) 1984-05-31 1984-05-31 トナ−濃度等のセンサ−

Country Status (1)

Country Link
JP (1) JPS60254170A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310425A (en) * 1987-05-19 1994-05-10 Tdk Corporation Toner concentration detector for a two-component developer
KR20010067481A (ko) * 2001-01-09 2001-07-13 박정환 레이저 치료기의 프로브 구조

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858569A (ja) * 1981-10-02 1983-04-07 Fuji Xerox Co Ltd 電子複写機のトナ−比率検知装置
JPS5886451A (ja) * 1981-11-18 1983-05-24 Casio Comput Co Ltd 現像剤の濃度検知装置

Also Published As

Publication number Publication date
JPS60254170A (ja) 1985-12-14

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term