JPS5694374A - Electrostatic recorder - Google Patents

Electrostatic recorder

Info

Publication number
JPS5694374A
JPS5694374A JP17028879A JP17028879A JPS5694374A JP S5694374 A JPS5694374 A JP S5694374A JP 17028879 A JP17028879 A JP 17028879A JP 17028879 A JP17028879 A JP 17028879A JP S5694374 A JPS5694374 A JP S5694374A
Authority
JP
Japan
Prior art keywords
toner
insufficiency
signal reception
electrodes
nonrecording
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
JP17028879A
Other languages
Japanese (ja)
Inventor
Kenichi Saito
Shinobu Azuma
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.)
Hitachi Ltd
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
Priority to JP17028879A priority Critical patent/JPS5694374A/en
Publication of JPS5694374A publication Critical patent/JPS5694374A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To effectively prevent recording obscurity owing toner insufficiency, nonrecording signal reception, etc. by detecting the insufficiency of toner amount by means of a pair of electrodes provided on the outer side of a toner containing vessel. CONSTITUTION:A toner containing vessel 8 is constituted of a nonmagnetic material and two sheets of electrodes 16 are mounted to the outer side thereof, whereby a capacitor 17 is formed. An electrostatic capacity detecting circuit 19 is connected to the electrodes 16 via lead wires 18. With such constitution, the electrostaic capacity of the capacitor 17 changes in proportion to the magnitude of a magnetic toner 9, and therefore this value is detected with the detecting circuit 19 and is passed through a predetermined electric circuit so that the response signal is not transmitted to the transmission side to inhibit the starting of signal reception if the magnetic toner 9 is insufficient. Thereby, the image quality defect or nonrecording signal reception, etc. owing to the insufficiency of the toner 9 is prevented.
JP17028879A 1979-12-28 1979-12-28 Electrostatic recorder Pending JPS5694374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17028879A JPS5694374A (en) 1979-12-28 1979-12-28 Electrostatic recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17028879A JPS5694374A (en) 1979-12-28 1979-12-28 Electrostatic recorder

Publications (1)

Publication Number Publication Date
JPS5694374A true JPS5694374A (en) 1981-07-30

Family

ID=15902164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17028879A Pending JPS5694374A (en) 1979-12-28 1979-12-28 Electrostatic recorder

Country Status (1)

Country Link
JP (1) JPS5694374A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212861A (en) * 1983-05-17 1984-12-01 Sharp Corp Copying machine
JP2009220584A (en) * 2009-07-07 2009-10-01 Dainippon Printing Co Ltd Booklet-like printed matter
JP2020020888A (en) * 2018-07-30 2020-02-06 株式会社リコー Powder amount detection device, powder supply device, and image forming apparatus
JP2021026028A (en) * 2019-07-31 2021-02-22 株式会社リコー Powder amount detection device, powder supply device, and image forming apparatus
JP2021067829A (en) * 2019-10-24 2021-04-30 株式会社リコー Toner level detection device, image forming device, and toner level detection method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212861A (en) * 1983-05-17 1984-12-01 Sharp Corp Copying machine
JP2009220584A (en) * 2009-07-07 2009-10-01 Dainippon Printing Co Ltd Booklet-like printed matter
JP2020020888A (en) * 2018-07-30 2020-02-06 株式会社リコー Powder amount detection device, powder supply device, and image forming apparatus
JP2021026028A (en) * 2019-07-31 2021-02-22 株式会社リコー Powder amount detection device, powder supply device, and image forming apparatus
JP2021067829A (en) * 2019-10-24 2021-04-30 株式会社リコー Toner level detection device, image forming device, and toner level detection method

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