DE69224241T2 - Tonerkonzentrationsermittlung mit Verwendung eines, auf einer Schnecke montierten, Magneten - Google Patents

Tonerkonzentrationsermittlung mit Verwendung eines, auf einer Schnecke montierten, Magneten

Info

Publication number
DE69224241T2
DE69224241T2 DE69224241T DE69224241T DE69224241T2 DE 69224241 T2 DE69224241 T2 DE 69224241T2 DE 69224241 T DE69224241 T DE 69224241T DE 69224241 T DE69224241 T DE 69224241T DE 69224241 T2 DE69224241 T2 DE 69224241T2
Authority
DE
Germany
Prior art keywords
determination
screw
toner concentration
magnet mounted
magnet
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 - Fee Related
Application number
DE69224241T
Other languages
English (en)
Other versions
DE69224241D1 (de
Inventor
Stephen J Nichols
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of DE69224241D1 publication Critical patent/DE69224241D1/de
Publication of DE69224241T2 publication Critical patent/DE69224241T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0889—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for agitation or stirring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
DE69224241T 1991-07-30 1992-07-30 Tonerkonzentrationsermittlung mit Verwendung eines, auf einer Schnecke montierten, Magneten Expired - Fee Related DE69224241T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/738,028 US5111247A (en) 1991-07-30 1991-07-30 Toner concentration sensing using auger mounted magnet

Publications (2)

Publication Number Publication Date
DE69224241D1 DE69224241D1 (de) 1998-03-05
DE69224241T2 true DE69224241T2 (de) 1998-07-23

Family

ID=24966276

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224241T Expired - Fee Related DE69224241T2 (de) 1991-07-30 1992-07-30 Tonerkonzentrationsermittlung mit Verwendung eines, auf einer Schnecke montierten, Magneten

Country Status (6)

Country Link
US (1) US5111247A (de)
EP (1) EP0526194B1 (de)
JP (1) JPH05197290A (de)
BR (1) BR9202887A (de)
DE (1) DE69224241T2 (de)
MX (1) MX9203843A (de)

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JP3023009B2 (ja) * 1991-05-14 2000-03-21 ミノルタ株式会社 光学式トナー濃度検出方法におけるトラブル検出方法
US5532790A (en) * 1992-11-13 1996-07-02 Minolta Camera Kabushiki Kaisha Device for optically detecting an amount of remaining developer in an image forming apparatus
US5424820A (en) * 1993-08-30 1995-06-13 Xerox Corporation Cleaner sump with magnetic transport
US5705924A (en) * 1993-11-09 1998-01-06 Eastman Kodak Company Hall effect sensor for detecting an induced image magnet in a smooth material
US5426486A (en) * 1994-02-22 1995-06-20 Eastman Kodak Company Toner monitor having magnetic field control
US5581335A (en) * 1994-11-04 1996-12-03 Xerox Corporation Programmable toner concentration and temperature sensor interface method and apparatus
US5729787A (en) * 1996-07-23 1998-03-17 Eastman Kodak Company Toner concentration monitor and method
US6404997B1 (en) 2001-01-29 2002-06-11 Xerox Corporation Method and apparatus for dynamically controlling image density
JP4462780B2 (ja) * 2001-04-09 2010-05-12 株式会社リコー 現像装置および画像形成装置
US6708006B2 (en) * 2002-01-29 2004-03-16 Heidelberger Druckmaschinen Ag Image-forming machine having a development station with a developer flow monitoring system
DE10304884B3 (de) * 2003-02-06 2004-09-16 OCé PRINTING SYSTEMS GMBH Verfahren und Anordnung zur Steuerung des Zeitpunktes der Messung der Tonerkonzentration in einem Toner und Träger aufweisenden Entwicklergemisch
US20060127110A1 (en) * 2004-12-14 2006-06-15 Xerox Corporation In-situ optical sensor for measurement of toner concentration
US7426361B2 (en) * 2005-09-01 2008-09-16 Eastman Kodak Company Developer mixing apparatus having four ribbon blenders
JP4809863B2 (ja) * 2008-04-09 2011-11-09 株式会社沖データ 現像剤収容装置、画像形成ユニット及び画像形成装置
KR102024591B1 (ko) * 2012-11-14 2019-11-04 엘지전자 주식회사 로봇 청소기
US8989611B2 (en) 2012-12-18 2015-03-24 Lexmark International, Inc. Replaceable unit for an image forming device having a falling paddle for toner level sensing
US9069286B2 (en) 2012-12-18 2015-06-30 Lexmark International, Inc. Rotational sensing for a replaceable unit of an image forming device
US9104134B2 (en) 2012-12-18 2015-08-11 Lexmark International, Inc. Toner level sensing for replaceable unit of an image forming device
US9031424B2 (en) 2012-12-18 2015-05-12 Lexmark International, Inc. Systems and methods for measuring a particulate material
US9152080B2 (en) 2012-12-18 2015-10-06 Lexmark International, Inc. Replaceable unit for an image forming device having a toner agitator that includes a magnet for rotational sensing
US9128443B2 (en) 2012-12-18 2015-09-08 Lexmark International, Inc. Toner level sensing for replaceable unit of an image forming device
US9128444B1 (en) 2014-04-16 2015-09-08 Lexmark International, Inc. Toner level sensing for a replaceable unit of an image forming device using pulse width patterns from a magnetic sensor
US9519243B2 (en) 2014-06-02 2016-12-13 Lexmark International, Inc. Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
US9389582B2 (en) 2014-06-02 2016-07-12 Lexmark International, Inc. Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing
US9335656B2 (en) 2014-06-02 2016-05-10 Lexmark International, Inc. Toner level sensing using rotatable magnets having varying angular offset
JP6614769B2 (ja) * 2014-12-12 2019-12-04 キヤノン株式会社 画像形成装置
US9753403B2 (en) * 2015-01-08 2017-09-05 Canon Kabushiki Kaisha Image forming apparatus for executing developer replenishment control
US9280084B1 (en) 2015-02-25 2016-03-08 Lexmark International, Inc. Magnetic sensor positioning by a replaceable unit of an electrophotographic image forming device
US9291989B1 (en) 2015-02-25 2016-03-22 Lexmark International, Inc. Replaceable unit for an electrophotographic image forming device having an engagement member for positioning a magnetic sensor
JP2018036538A (ja) * 2016-08-31 2018-03-08 キヤノン株式会社 現像装置
JP6864825B2 (ja) * 2017-03-03 2021-04-28 富士フイルムビジネスイノベーション株式会社 現像装置および画像形成装置
US10429765B1 (en) 2018-07-05 2019-10-01 Lexmark International, Inc. Toner container for an image forming device having magnets of varying angular offset for toner level sensing
US10474060B1 (en) 2018-07-05 2019-11-12 Lexmark International, Inc. Toner level sensing using rotatable magnets having varying angular offset
US10451997B1 (en) 2018-07-20 2019-10-22 Lexmark International, Inc. Toner level detection measuring an orientation of a rotatable magnet having a varying orientation relative to a pivot axis
US10345736B1 (en) 2018-07-20 2019-07-09 Lexmark International, Inc. Toner level detection measuring a radius of a rotatable magnet
US10451998B1 (en) 2018-07-20 2019-10-22 Lexmark International, Inc. Toner level detection measuring an orientation of a rotatable magnet having a varying radius
JP7192289B2 (ja) * 2018-07-27 2022-12-20 富士フイルムビジネスイノベーション株式会社 現像装置及び画像形成装置
JP7127493B2 (ja) * 2018-11-05 2022-08-30 京セラドキュメントソリューションズ株式会社 トナー搬送装置およびそれを備えた現像装置並びに画像形成装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200665A (en) * 1974-06-18 1980-04-29 Koichi Suzuki Method for controlling the toner concentration of a developer used in a dry type developing system
US4075977A (en) * 1977-01-12 1978-02-28 Eastman Kodak Company Mixing hopper for magnetic brush developing apparatus
DE3149908A1 (de) * 1980-12-19 1982-09-02 Minolta Camera K.K., Osaka Verfahren zum steuern der tonerkonzentration fuer elektrofotografische kopiergeraete
US4378754A (en) * 1981-08-05 1983-04-05 Wang Laboratories, Inc. Toner applicator system for magnetography
DE3363624D1 (en) * 1982-02-11 1986-07-03 Agfa Gevaert Nv Xerographic copying apparatus
JPS58208771A (ja) * 1982-05-29 1983-12-05 Olympus Optical Co Ltd トナ−濃度検知装置
JPS59166976A (ja) * 1983-03-14 1984-09-20 Fuji Xerox Co Ltd 複写機の現像装置
JPS6080879A (ja) * 1983-10-08 1985-05-08 Olympus Optical Co Ltd 現像剤濃度検出方法
JPS60107664A (ja) * 1983-11-16 1985-06-13 Olympus Optical Co Ltd 現像剤残量検知装置
JPS60238873A (ja) * 1984-05-11 1985-11-27 Fuji Xerox Co Ltd トナ−補給装置
JPH083683B2 (ja) * 1986-06-09 1996-01-17 キヤノン株式会社 現像装置
JPH0656531B2 (ja) * 1987-02-25 1994-07-27 シャープ株式会社 電子写真プロセスにおける現像装置
DE3826568A1 (de) * 1987-08-05 1989-02-16 Minolta Camera Kk Reinigungseinrichtung fuer toner-detektorsensor
JPH01261683A (ja) * 1988-04-13 1989-10-18 Minolta Camera Co Ltd トナー濃度制御装置
US4959690A (en) * 1989-02-06 1990-09-25 Imagitek, Inc. Paddle wheel cross-mixer
JP2868672B2 (ja) * 1992-08-31 1999-03-10 沖電気工業株式会社 シリコーン樹脂組成物及びこれを用いたケイ酸ガラス薄膜の製造方法

Also Published As

Publication number Publication date
US5111247A (en) 1992-05-05
EP0526194A2 (de) 1993-02-03
BR9202887A (pt) 1993-03-30
JPH05197290A (ja) 1993-08-06
DE69224241D1 (de) 1998-03-05
EP0526194A3 (de) 1994-03-16
MX9203843A (es) 1993-01-01
EP0526194B1 (de) 1998-01-28

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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)
8339 Ceased/non-payment of the annual fee