JPS597456U - Toner concentration detector - Google Patents

Toner concentration detector

Info

Publication number
JPS597456U
JPS597456U JP10177182U JP10177182U JPS597456U JP S597456 U JPS597456 U JP S597456U JP 10177182 U JP10177182 U JP 10177182U JP 10177182 U JP10177182 U JP 10177182U JP S597456 U JPS597456 U JP S597456U
Authority
JP
Japan
Prior art keywords
toner concentration
concentration detector
coils
developer
utility
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.)
Pending
Application number
JP10177182U
Other languages
Japanese (ja)
Inventor
浩一 野口
Original Assignee
株式会社リコー
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 株式会社リコー filed Critical 株式会社リコー
Priority to JP10177182U priority Critical patent/JPS597456U/en
Priority to DE19833324544 priority patent/DE3324544A1/en
Publication of JPS597456U publication Critical patent/JPS597456U/en
Pending 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)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はコイル軸部分゛を利用した従来のトナー濃度検
知器の構成図、第２図はコイル端面を利用した従来のト
ナー濃度検知器の要部構成図、第３図は出願人が先に提
案したトナー濃度検知器の要部断面図、第４図は本考案
の一実施例を示すトナー濃度検知器の要部断面図、第５
図は第４図のコイル接続構成と磁束の流を示す説明図、
第６図は本考案の他の実施例を示すトナー濃度検知器の
要部断面図である。 １・・・・・・ボビン、２・・・・・・コイル、３・・
・・・・発振回路、４・・・・・・現像剤、５・・・・
・・コア、６・・・・・・カバー、７・・・・・・磁束
、８・・・・・・プレート。Fig. 1 is a block diagram of a conventional toner concentration detector that uses a coil shaft portion, Fig. 2 is a block diagram of the main parts of a conventional toner concentration detector that uses a coil end face, and Fig. 3 is a block diagram of a conventional toner concentration detector that uses a coil shaft portion. FIG. 4 is a cross-sectional view of a main part of a toner concentration detector proposed in 2003, and FIG.
The figure is an explanatory diagram showing the coil connection configuration and magnetic flux flow in Figure 4,
FIG. 6 is a sectional view of a main part of a toner concentration detector showing another embodiment of the present invention. 1...Bobbin, 2...Coil, 3...
...Oscillation circuit, 4...Developer, 5...
... Core, 6 ... Cover, 7 ... Magnetic flux, 8 ... Plate.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）対峙させたコイルを共通に貫流する磁束が増大す
る極性に前記コイルを接続すると共に、前記コイル間に
現像剤を流動させて前記コイルの合成インダクタンスの
変化により現像剤のトナー濃度を検知することを特徴と
するトナー濃度検知器。(1) The coils are connected to a polarity that increases the magnetic flux that commonly flows through the facing coils, and the developer is caused to flow between the coils, and the toner concentration of the developer is detected by the change in the composite inductance of the coils. A toner concentration detector characterized by: （２）実用新案登録請求の範囲第１項記載において、前
記合成インダクタンスを周波数決定要素とする発振器を
構成し、発振周波数の変化によってトナー濃度を検知す
ることを特徴とするトナー濃度検知器。(2) Utility Model Registration The toner concentration detector according to claim 1, wherein the toner concentration detector comprises an oscillator using the synthetic inductance as a frequency determining element, and detects the toner concentration based on a change in the oscillation frequency.
JP10177182U 1982-07-07 1982-07-07 Toner concentration detector Pending JPS597456U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP10177182U JPS597456U (en) 1982-07-07 1982-07-07 Toner concentration detector
DE19833324544 DE3324544A1 (en) 1982-07-07 1983-07-07 Toner density sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10177182U JPS597456U (en) 1982-07-07 1982-07-07 Toner concentration detector

Publications (1)

Publication Number Publication Date
JPS597456U true JPS597456U (en) 1984-01-18

Family

ID=14309477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10177182U Pending JPS597456U (en) 1982-07-07 1982-07-07 Toner concentration detector

Country Status (2)

Country Link
JP (1) JPS597456U (en)
DE (1) DE3324544A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176051U (en) * 1983-05-11 1984-11-24 京セラミタ株式会社 Appropriate developer condition detection device for copying machines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371838A (en) * 1976-12-08 1978-06-26 Ricoh Co Ltd Detector for toner density

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349437A (en) * 1976-10-16 1978-05-04 Hitachi Ltd Toner density detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371838A (en) * 1976-12-08 1978-06-26 Ricoh Co Ltd Detector for toner density

Also Published As

Publication number Publication date
DE3324544A1 (en) 1984-01-12
DE3324544C2 (en) 1987-10-29

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