DK107880A - Elektrostatisk kopieringsapparat - Google Patents

Elektrostatisk kopieringsapparat

Info

Publication number
DK107880A
DK107880A DK107880A DK107880A DK107880A DK 107880 A DK107880 A DK 107880A DK 107880 A DK107880 A DK 107880A DK 107880 A DK107880 A DK 107880A DK 107880 A DK107880 A DK 107880A
Authority
DK
Denmark
Prior art keywords
electrostatic copier
copier
electrostatic
Prior art date
Application number
DK107880A
Other languages
English (en)
Other versions
DK159342B (da
DK159342C (da
Inventor
I Terashima
M Sunada
Original Assignee
Hitachi 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 filed Critical Hitachi Ltd
Publication of DK107880A publication Critical patent/DK107880A/da
Publication of DK159342B publication Critical patent/DK159342B/da
Application granted granted Critical
Publication of DK159342C publication Critical patent/DK159342C/da

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
DK107880A 1979-03-14 1980-03-13 Apparat til overvaagning af en fremkalder i en elektrofotografisk fremkalderstation DK159342C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2870879 1979-03-14
JP2870879A JPS55121459A (en) 1979-03-14 1979-03-14 Developer supervising device

Publications (3)

Publication Number Publication Date
DK107880A true DK107880A (da) 1980-09-15
DK159342B DK159342B (da) 1990-10-01
DK159342C DK159342C (da) 1991-03-04

Family

ID=12255947

Family Applications (1)

Application Number Title Priority Date Filing Date
DK107880A DK159342C (da) 1979-03-14 1980-03-13 Apparat til overvaagning af en fremkalder i en elektrofotografisk fremkalderstation

Country Status (5)

Country Link
US (1) US4331184A (da)
JP (1) JPS55121459A (da)
DE (1) DE3009686C2 (da)
DK (1) DK159342C (da)
IT (1) IT1129426B (da)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745573A (en) * 1980-09-01 1982-03-15 Hitachi Metals Ltd Development device for magnetic toner
DE3119029C2 (de) * 1981-05-13 1983-02-10 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zur Entwicklung von auf einem Ladungsbildträger angeordneten Ladungsbildern mit Hilfe eines aus Toner und Trägerteilchen bestehenden Entwicklergemisches
US4397184A (en) * 1981-10-09 1983-08-09 International Business Machines Corporation Method and apparatus for testing xerographic developer mix
DE3308066C1 (de) * 1983-03-08 1984-09-13 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Farbdosiervorrichtung fuer eine Farbkastenwalze
JPS61230175A (ja) * 1985-04-03 1986-10-14 Minolta Camera Co Ltd 静電潜像現像装置
JPH0830921B2 (ja) * 1986-02-14 1996-03-27 スペクトラム、サイエンセズ、ベーヴェー 液体現像剤のチヤ−ジデイレクタの制御
US4860924A (en) * 1986-02-14 1989-08-29 Savin Corporation Liquid developer charge director control
JPH02297081A (ja) * 1989-05-12 1990-12-07 Mineruba:Kk 磁気ヘッド
JP2989214B2 (ja) * 1990-04-16 1999-12-13 シャープ株式会社 画像形成装置
US5162849A (en) * 1990-11-23 1992-11-10 Konica Corporation Image forming apparatus having a developer deterioration detecting device
JP6004799B2 (ja) * 2012-07-10 2016-10-12 キヤノン株式会社 現像剤収容容器及び画像形成装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4226525A (en) * 1976-10-19 1980-10-07 Ricoh Company, Ltd. Electrostatic copying machine
JPS5398840A (en) * 1977-02-09 1978-08-29 Ricoh Co Ltd Detection of deterioration state of developing agnet
JPS53126944A (en) * 1977-04-13 1978-11-06 Hitachi Ltd Developing device using developing powder
JPS609269B2 (ja) * 1977-04-19 1985-03-08 株式会社リコー ２成分系現像剤におけるトナ−濃度検知方法
DE2727402C2 (de) * 1977-06-18 1979-04-19 Hoechst Ag, 6000 Frankfurt Vorrichtung zur Messung der Tonerkonzentration eines Entwicklergemisches
US4230070A (en) * 1977-08-24 1980-10-28 Minolta Camera Kabushiki Kaisha Device for automatically replenishing toner to dry-type developing apparatus for electrophotography

Also Published As

Publication number Publication date
DE3009686A1 (de) 1980-10-02
JPS55121459A (en) 1980-09-18
JPS6329261B2 (da) 1988-06-13
DE3009686C2 (de) 1982-10-21
DK159342B (da) 1990-10-01
IT8067390A0 (it) 1980-03-13
US4331184A (en) 1982-05-25
IT1129426B (it) 1986-06-04
DK159342C (da) 1991-03-04

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Legal Events

Date Code Title Description
PBP Patent lapsed