DE3877054T2 - Tonerkonzentrationsermittlung. - Google Patents

Tonerkonzentrationsermittlung.

Info

Publication number
DE3877054T2
DE3877054T2 DE19883877054 DE3877054T DE3877054T2 DE 3877054 T2 DE3877054 T2 DE 3877054T2 DE 19883877054 DE19883877054 DE 19883877054 DE 3877054 T DE3877054 T DE 3877054T DE 3877054 T2 DE3877054 T2 DE 3877054T2
Authority
DE
Germany
Prior art keywords
toner concentration
diode
voltage
circuit
vcd
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
DE19883877054
Other languages
German (de)
English (en)
Other versions
DE3877054D1 (de
Inventor
Taisuke Domon
Takehiro Imai
Shiro Nakagawa
Eiji Takahashi
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
Application granted granted Critical
Publication of DE3877054D1 publication Critical patent/DE3877054D1/de
Publication of DE3877054T2 publication Critical patent/DE3877054T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE19883877054 1987-05-19 1988-04-28 Tonerkonzentrationsermittlung. Expired - Lifetime DE3877054T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987074869U JPH0633484Y2 (ja) 1987-05-19 1987-05-19 トナ−濃度検出装置

Publications (2)

Publication Number Publication Date
DE3877054D1 DE3877054D1 (de) 1993-02-11
DE3877054T2 true DE3877054T2 (de) 1993-04-29

Family

ID=13559768

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883877054 Expired - Lifetime DE3877054T2 (de) 1987-05-19 1988-04-28 Tonerkonzentrationsermittlung.

Country Status (3)

Country Link
EP (1) EP0292130B1 (enExample)
JP (1) JPH0633484Y2 (enExample)
DE (1) DE3877054T2 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648514A (en) * 1994-12-29 1997-07-15 Allergan Substituted acetylenes having retinoid-like biological activity
JP5721365B2 (ja) * 2010-08-23 2015-05-20 キヤノン株式会社 磁性体粉濃度検知装置及びこの検知装置を用いた画像形成装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120045A (en) * 1980-02-16 1981-09-21 Nippon Air Brake Co Detector
JPS5813013A (ja) * 1981-07-17 1983-01-25 Nippon Technical Co Ltd 同調回路
JPS5836018A (ja) * 1981-08-27 1983-03-02 Mitsubishi Electric Corp Ｆｍ受信機
EP0126165B2 (en) * 1982-11-29 1992-11-11 Hitachi Metals, Ltd. Apparatus for controlling toner concentration in developer
JPS59141817A (ja) * 1983-02-03 1984-08-14 Nippon Technical Co Ltd 同調器
JPS61149858A (ja) * 1984-12-24 1986-07-08 Tdk Corp 磁気的検知装置
JPS61149859A (ja) * 1984-12-24 1986-07-08 Tdk Corp 磁気的検知装置

Also Published As

Publication number Publication date
EP0292130A3 (en) 1989-06-14
EP0292130B1 (en) 1992-12-30
EP0292130A2 (en) 1988-11-23
JPH0633484Y2 (ja) 1994-08-31
JPS63187160U (enExample) 1988-11-30
DE3877054D1 (de) 1993-02-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)