JPS5742062A - Method for detecting toner amount in electrophotographic recorder - Google Patents

Method for detecting toner amount in electrophotographic recorder

Info

Publication number
JPS5742062A
JPS5742062A JP11774380A JP11774380A JPS5742062A JP S5742062 A JPS5742062 A JP S5742062A JP 11774380 A JP11774380 A JP 11774380A JP 11774380 A JP11774380 A JP 11774380A JP S5742062 A JPS5742062 A JP S5742062A
Authority
JP
Japan
Prior art keywords
wire
toner
voltage
detecting
electrostrictive
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
JP11774380A
Other languages
Japanese (ja)
Inventor
Hiroshi Konishi
Mikio Yamamoto
Mikihiko Sone
Yasuhisa Ikeda
Hiroyuki Hoshino
Yukio Tokunaga
Kazuyoshi Tateishi
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP11774380A priority Critical patent/JPS5742062A/en
Publication of JPS5742062A publication Critical patent/JPS5742062A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To detect the toner amount around a wire by providing diaphragms mounted in one body to electrostrictive elemnts to both ends of the wire, applying voltage to the one electrostrictive element to vibrate the wire and detecting the voltage generated in the other electrostrictive element. CONSTITUTION:A wire 4 is installed in a toner container, and both ends of said wire 4 are secured respectively to a diaphragm 3 mounted in one body to an oscillating element 2 and a diaphragm 6 mounted in one body to a vibration receiving element 7. Voltage of prescribed frequency is applied to the element 2 to vibrate the wire 4, and the voltage generated in the element 7 is detected. At this time, a voltage difference is generated in the output of the element 7 depending upon whether the wire 4 is within the toner or air, and therefore the presence or absence of the toner is judged by detecting this difference. Then, the need for cleaning means of the detecting elements is eliminated, and the change in the properties of the toner by the effect of heat does not occur.
JP11774380A 1980-08-28 1980-08-28 Method for detecting toner amount in electrophotographic recorder Pending JPS5742062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11774380A JPS5742062A (en) 1980-08-28 1980-08-28 Method for detecting toner amount in electrophotographic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11774380A JPS5742062A (en) 1980-08-28 1980-08-28 Method for detecting toner amount in electrophotographic recorder

Publications (1)

Publication Number Publication Date
JPS5742062A true JPS5742062A (en) 1982-03-09

Family

ID=14719199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11774380A Pending JPS5742062A (en) 1980-08-28 1980-08-28 Method for detecting toner amount in electrophotographic recorder

Country Status (1)

Country Link
JP (1) JPS5742062A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62207913A (en) * 1986-03-10 1987-09-12 Kokusan Denki Co Ltd Liquid detecting device
JP2010145798A (en) * 2008-12-19 2010-07-01 Canon Inc Image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62207913A (en) * 1986-03-10 1987-09-12 Kokusan Denki Co Ltd Liquid detecting device
JP2010145798A (en) * 2008-12-19 2010-07-01 Canon Inc Image forming apparatus

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