JPS56150774A - Developing device using magnetic toner - Google Patents

Developing device using magnetic toner

Info

Publication number
JPS56150774A
JPS56150774A JP5299080A JP5299080A JPS56150774A JP S56150774 A JPS56150774 A JP S56150774A JP 5299080 A JP5299080 A JP 5299080A JP 5299080 A JP5299080 A JP 5299080A JP S56150774 A JPS56150774 A JP S56150774A
Authority
JP
Japan
Prior art keywords
toner
magnetic
magnetic toner
kept
sensor
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
JP5299080A
Other languages
Japanese (ja)
Inventor
Keitaro Yamashita
Minoru Arai
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP5299080A priority Critical patent/JPS56150774A/en
Publication of JPS56150774A publication Critical patent/JPS56150774A/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
    • G03G15/0856—Detection or control means for the developer level
    • 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
    • G03G15/0856—Detection or control means for the developer level
    • G03G15/086—Detection or control means for the developer level the level being measured by electro-magnetic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To prevent overflow of a magnetic toner, by providing a magnetic toner sensor in the specified position of a toner container, and a magnetic toner attracting means in a toner storage tank, and attracting the toner when the detector operates. CONSTITUTION:Sensor 9 for detecting presence of a magnetic toner is provided in toner container 1, when the toner is absent in container 1, a switch incorporated in sensor 9 is kept off, and on the other hand, when the toner is present, the switch is kept on. Magnetic toner feed controller 10 has magnetic toner attracting material 11 and coil 12 for magnetizing material 11, thus permitting a magnetic field not to be generated by the coil 10 when toner feed rate is small, and material 11 not to be magnetized, therefore toner feed to be kept on, when the toner amounts to a given value, the switch to be turned off, toner feed to be stopped, and so its overflow to be prevented.
JP5299080A 1980-04-23 1980-04-23 Developing device using magnetic toner Pending JPS56150774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5299080A JPS56150774A (en) 1980-04-23 1980-04-23 Developing device using magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5299080A JPS56150774A (en) 1980-04-23 1980-04-23 Developing device using magnetic toner

Publications (1)

Publication Number Publication Date
JPS56150774A true JPS56150774A (en) 1981-11-21

Family

ID=12930352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5299080A Pending JPS56150774A (en) 1980-04-23 1980-04-23 Developing device using magnetic toner

Country Status (1)

Country Link
JP (1) JPS56150774A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310044A2 (en) * 1987-09-30 1989-04-05 Mita Industrial Co. Ltd. Developer supply system
JPH0447140U (en) * 1990-08-27 1992-04-22

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310044A2 (en) * 1987-09-30 1989-04-05 Mita Industrial Co. Ltd. Developer supply system
US4935783A (en) * 1987-09-30 1990-06-19 Mita Industrial Co., Ltd. Developer supply system
JPH0447140U (en) * 1990-08-27 1992-04-22

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