JPS6328305B2 - - Google Patents

Info

Publication number
JPS6328305B2
JPS6328305B2 JP14446779A JP14446779A JPS6328305B2 JP S6328305 B2 JPS6328305 B2 JP S6328305B2 JP 14446779 A JP14446779 A JP 14446779A JP 14446779 A JP14446779 A JP 14446779A JP S6328305 B2 JPS6328305 B2 JP S6328305B2
Authority
JP
Japan
Prior art keywords
toner concentration
voltage
detection
developer
toner
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
Application number
JP14446779A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5667872A (en
Inventor
Masayasu Anzai
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 JP14446779A priority Critical patent/JPS5667872A/ja
Publication of JPS5667872A publication Critical patent/JPS5667872A/ja
Publication of JPS6328305B2 publication Critical patent/JPS6328305B2/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)
JP14446779A 1979-11-09 1979-11-09 Toner concentration detector Granted JPS5667872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14446779A JPS5667872A (en) 1979-11-09 1979-11-09 Toner concentration detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14446779A JPS5667872A (en) 1979-11-09 1979-11-09 Toner concentration detector

Publications (2)

Publication Number Publication Date
JPS5667872A JPS5667872A (en) 1981-06-08
JPS6328305B2 true JPS6328305B2 (enExample) 1988-06-08

Family

ID=15362950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14446779A Granted JPS5667872A (en) 1979-11-09 1979-11-09 Toner concentration detector

Country Status (1)

Country Link
JP (1) JPS5667872A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1069155A (ja) * 1996-05-29 1998-03-10 Ricoh Co Ltd 画像形成装置

Also Published As

Publication number Publication date
JPS5667872A (en) 1981-06-08

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