JPS61138971A - 現像剤濃度の異常検出装置 - Google Patents

現像剤濃度の異常検出装置

Info

Publication number
JPS61138971A
JPS61138971A JP26235384A JP26235384A JPS61138971A JP S61138971 A JPS61138971 A JP S61138971A JP 26235384 A JP26235384 A JP 26235384A JP 26235384 A JP26235384 A JP 26235384A JP S61138971 A JPS61138971 A JP S61138971A
Authority
JP
Japan
Prior art keywords
toner
developer
magnetic permeability
sensor
concentration
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
JP26235384A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0445827B2 (enExample
Inventor
Toshiki Anzai
安西　俊樹
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP26235384A priority Critical patent/JPS61138971A/ja
Publication of JPS61138971A publication Critical patent/JPS61138971A/ja
Publication of JPH0445827B2 publication Critical patent/JPH0445827B2/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)
  • Dry Development In Electrophotography (AREA)
JP26235384A 1984-12-11 1984-12-11 現像剤濃度の異常検出装置 Granted JPS61138971A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26235384A JPS61138971A (ja) 1984-12-11 1984-12-11 現像剤濃度の異常検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26235384A JPS61138971A (ja) 1984-12-11 1984-12-11 現像剤濃度の異常検出装置

Publications (2)

Publication Number Publication Date
JPS61138971A true JPS61138971A (ja) 1986-06-26
JPH0445827B2 JPH0445827B2 (enExample) 1992-07-28

Family

ID=17374563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26235384A Granted JPS61138971A (ja) 1984-12-11 1984-12-11 現像剤濃度の異常検出装置

Country Status (1)

Country Link
JP (1) JPS61138971A (enExample)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938730A (enExample) * 1972-08-24 1974-04-11
JPS5448560A (en) * 1976-12-21 1979-04-17 Fujitsu Ltd Printing concentration control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938730A (enExample) * 1972-08-24 1974-04-11
JPS5448560A (en) * 1976-12-21 1979-04-17 Fujitsu Ltd Printing concentration control system

Also Published As

Publication number Publication date
JPH0445827B2 (enExample) 1992-07-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees