JPS54161944A - Magnetic brush developing device of electrophotography - Google Patents

Magnetic brush developing device of electrophotography

Info

Publication number
JPS54161944A
JPS54161944A JP7066678A JP7066678A JPS54161944A JP S54161944 A JPS54161944 A JP S54161944A JP 7066678 A JP7066678 A JP 7066678A JP 7066678 A JP7066678 A JP 7066678A JP S54161944 A JPS54161944 A JP S54161944A
Authority
JP
Japan
Prior art keywords
magnetic
sleeve
toner
poles
containing vessel
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.)
Granted
Application number
JP7066678A
Other languages
Japanese (ja)
Other versions
JPS6226465B2 (en
Inventor
Jinichi Kamogawa
Tadashi Umezawa
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP7066678A priority Critical patent/JPS54161944A/en
Publication of JPS54161944A publication Critical patent/JPS54161944A/en
Publication of JPS6226465B2 publication Critical patent/JPS6226465B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To obviate the occurrence of cohesive action of magnetic toner near a doctor plate and make bristling-up good at the developing part by making the magnetic force of the magnetic pole of the magnetic field generator positioned in a magnetic toner containing vessel to 1/2 or 1/10 the magnetic forces of the other magnetic poles.
CONSTITUTION: A magnetic field generator 13 having magnetic poles M11 thru M14 is concentrically fixed in a rotatable non-magnetic sleeve 12 which is disposed with part thereof being immersed in a toner containing vessel 11. The magnetic force of the magnetic pole M13 positioned in the containing vessel 11 is made 1/2 to 1/10 of the magnetic forces of the other magnetic poles M11, M12, M14, and therefore when the sleeve 12 is rotated in the arrow A direction, magnetic tone r 14 is delivered out by depositing on the surface of the sleeve 12 but the amount scraped away by a doctor plate 15 is small, hence no cohesive action occurs and the magnetic toner 14 having been discharged deposits on the surface of the sleeve 12 by receiving the magnetic forces of the other magnetic poles M14, M11 and is thereby conveyed, and in the developing part the toner bristles up well under the cooperation of the magnetic pole 11.
COPYRIGHT: (C)1979,JPO&Japio
JP7066678A 1978-06-12 1978-06-12 Magnetic brush developing device of electrophotography Granted JPS54161944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7066678A JPS54161944A (en) 1978-06-12 1978-06-12 Magnetic brush developing device of electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7066678A JPS54161944A (en) 1978-06-12 1978-06-12 Magnetic brush developing device of electrophotography

Publications (2)

Publication Number Publication Date
JPS54161944A true JPS54161944A (en) 1979-12-22
JPS6226465B2 JPS6226465B2 (en) 1987-06-09

Family

ID=13438208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7066678A Granted JPS54161944A (en) 1978-06-12 1978-06-12 Magnetic brush developing device of electrophotography

Country Status (1)

Country Link
JP (1) JPS54161944A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181072A (en) * 1982-04-19 1983-10-22 Ricoh Co Ltd Dry type developing device
EP0102038A2 (en) * 1982-08-27 1984-03-07 Kabushiki Kaisha Toshiba Developing device and developing method
DE3418804A1 (en) * 1984-05-19 1985-11-21 Alfred Teves Gmbh, 6000 Frankfurt PROTECTIVE CUFF FOR CYLINDRICAL PARTS, ESPECIALLY FOR A BOLT GUIDE FOR A PART COVER DISC BRAKE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110642A (en) * 1974-02-08 1975-08-30
JPS5210144A (en) * 1975-07-14 1977-01-26 Ricoh Co Ltd Magnetic brush development device
JPS5376039A (en) * 1976-12-17 1978-07-06 Hitachi Metals Ltd Magnetic brush developing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110642A (en) * 1974-02-08 1975-08-30
JPS5210144A (en) * 1975-07-14 1977-01-26 Ricoh Co Ltd Magnetic brush development device
JPS5376039A (en) * 1976-12-17 1978-07-06 Hitachi Metals Ltd Magnetic brush developing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58181072A (en) * 1982-04-19 1983-10-22 Ricoh Co Ltd Dry type developing device
JPH0322993B2 (en) * 1982-04-19 1991-03-28 Ricoh Kk
EP0102038A2 (en) * 1982-08-27 1984-03-07 Kabushiki Kaisha Toshiba Developing device and developing method
DE3418804A1 (en) * 1984-05-19 1985-11-21 Alfred Teves Gmbh, 6000 Frankfurt PROTECTIVE CUFF FOR CYLINDRICAL PARTS, ESPECIALLY FOR A BOLT GUIDE FOR A PART COVER DISC BRAKE

Also Published As

Publication number Publication date
JPS6226465B2 (en) 1987-06-09

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