JPS56122066A - Unicomponent developing device for electrophotographic copier - Google Patents

Unicomponent developing device for electrophotographic copier

Info

Publication number
JPS56122066A
JPS56122066A JP2588280A JP2588280A JPS56122066A JP S56122066 A JPS56122066 A JP S56122066A JP 2588280 A JP2588280 A JP 2588280A JP 2588280 A JP2588280 A JP 2588280A JP S56122066 A JPS56122066 A JP S56122066A
Authority
JP
Japan
Prior art keywords
toner
magnetic field
alternating magnetic
vibration
doctor blade
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
JP2588280A
Other languages
Japanese (ja)
Inventor
Motoharu Tanaka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2588280A priority Critical patent/JPS56122066A/en
Publication of JPS56122066A publication Critical patent/JPS56122066A/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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration

Landscapes

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

Abstract

PURPOSE:To prevent coagulation of a magnetic toner, by applying an alternating magnetic field to the area near the tip of a doctor blade to give a vibration to the magnetic toner around the alternating magnetic field. CONSTITUTION:The electromagnet 8 applies an alternating magnetic field onto the circumference surface of the rubber layer 6 to give vibrations to the magnetic toner 4. As a result, the coagulated toner 4 is disperesed finely. At the same time, in case some foreign substance sitcks to the doctor blade 1, the toner 4 goes in round the foreign substance due to the vibration to cover the said substance. As a result, no part lacking the toner 4 is caused on the layer 6. In such way, generation of white streaks due to reduction of the picture concentration or an catching of foreign substances is avoided.
JP2588280A 1980-02-29 1980-02-29 Unicomponent developing device for electrophotographic copier Pending JPS56122066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2588280A JPS56122066A (en) 1980-02-29 1980-02-29 Unicomponent developing device for electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2588280A JPS56122066A (en) 1980-02-29 1980-02-29 Unicomponent developing device for electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS56122066A true JPS56122066A (en) 1981-09-25

Family

ID=12178144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2588280A Pending JPS56122066A (en) 1980-02-29 1980-02-29 Unicomponent developing device for electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS56122066A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008202896A (en) * 2007-02-21 2008-09-04 Sharp Corp Heat exchanger

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152843A (en) * 1974-11-05 1976-05-10 Hitachi Metals Ltd
JPS525073A (en) * 1975-06-27 1977-01-14 Gen Electric Device for keeping speed of surface of rotating work constant
JPS5443027A (en) * 1977-09-10 1979-04-05 Canon Inc Method and apparatus for developing of electrostatic image
JPS54111358A (en) * 1978-02-20 1979-08-31 Ricoh Co Ltd Electrostatic latent image developing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152843A (en) * 1974-11-05 1976-05-10 Hitachi Metals Ltd
JPS525073A (en) * 1975-06-27 1977-01-14 Gen Electric Device for keeping speed of surface of rotating work constant
JPS5443027A (en) * 1977-09-10 1979-04-05 Canon Inc Method and apparatus for developing of electrostatic image
JPS54111358A (en) * 1978-02-20 1979-08-31 Ricoh Co Ltd Electrostatic latent image developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008202896A (en) * 2007-02-21 2008-09-04 Sharp Corp Heat exchanger

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