JPS6490474A - Developing device - Google Patents

Developing device

Info

Publication number
JPS6490474A
JPS6490474A JP24725087A JP24725087A JPS6490474A JP S6490474 A JPS6490474 A JP S6490474A JP 24725087 A JP24725087 A JP 24725087A JP 24725087 A JP24725087 A JP 24725087A JP S6490474 A JPS6490474 A JP S6490474A
Authority
JP
Japan
Prior art keywords
toner
carrier
magnetic
sleeve
roller
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
JP24725087A
Other languages
Japanese (ja)
Other versions
JPH0519153B2 (en
Inventor
Hiromi Kashiwagi
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 JP24725087A priority Critical patent/JPS6490474A/en
Publication of JPS6490474A publication Critical patent/JPS6490474A/en
Publication of JPH0519153B2 publication Critical patent/JPH0519153B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To use the title developing device by non-check until a carrier reaches a prescribed service life by providing a developing roller on the inside of a toner tank for containing a magnetic toner, attaching a permanent magnet member so as to freely rotatable to the outside periphery and providing a carrier supplying part on the upper part. CONSTITUTION:To the inside of a toner tank 1, a magnetic toner 2 is supplied from a toner supply port 3. Subsequently, a carrier is supplied to a developing roller 4. When a sleeve 6 is rotated clockwise, the carrier is attracted to the surface of the roller 4 by magnetic force of a permanent magnet member 7. Next, a toner supply paddle 9 is rotated counterclockwise and the toner 2 is attracted to the surface of the sleeve 6 by magnetic force of the member 7 in the vicinity of the roller 4. By a rotation of the sleeve 6, the toner is mixed uniformly with the carrier, and a surplus toner is returned to the toner tank 1. The toner concentration in a developer always becomes constant, therefore, a satisfactory development can be executed. When the magnetic carrier has reached its service life, the developing device itself is replaced.
JP24725087A 1987-09-30 1987-09-30 Developing device Granted JPS6490474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24725087A JPS6490474A (en) 1987-09-30 1987-09-30 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24725087A JPS6490474A (en) 1987-09-30 1987-09-30 Developing device

Publications (2)

Publication Number Publication Date
JPS6490474A true JPS6490474A (en) 1989-04-06
JPH0519153B2 JPH0519153B2 (en) 1993-03-15

Family

ID=17160690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24725087A Granted JPS6490474A (en) 1987-09-30 1987-09-30 Developing device

Country Status (1)

Country Link
JP (1) JPS6490474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649071A2 (en) * 1993-10-19 1995-04-19 Fujitsu Limited Developing apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107560A (en) * 1981-12-22 1983-06-27 Canon Inc Developing device
JPS603675A (en) * 1983-06-22 1985-01-10 Hitachi Metals Ltd Electrostatic charge image developing device
JPS6032074A (en) * 1983-08-03 1985-02-19 Hitachi Metals Ltd Developing device
JPS6095561A (en) * 1983-10-31 1985-05-28 Canon Inc Developing device
JPS60165676A (en) * 1984-02-08 1985-08-28 Canon Inc Developing device
JPS61272769A (en) * 1985-05-28 1986-12-03 Minolta Camera Co Ltd Dry type developing device
JPS6270882A (en) * 1985-09-24 1987-04-01 Canon Inc Developer feeder

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58107560A (en) * 1981-12-22 1983-06-27 Canon Inc Developing device
JPS603675A (en) * 1983-06-22 1985-01-10 Hitachi Metals Ltd Electrostatic charge image developing device
JPS6032074A (en) * 1983-08-03 1985-02-19 Hitachi Metals Ltd Developing device
JPS6095561A (en) * 1983-10-31 1985-05-28 Canon Inc Developing device
JPS60165676A (en) * 1984-02-08 1985-08-28 Canon Inc Developing device
JPS61272769A (en) * 1985-05-28 1986-12-03 Minolta Camera Co Ltd Dry type developing device
JPS6270882A (en) * 1985-09-24 1987-04-01 Canon Inc Developer feeder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649071A2 (en) * 1993-10-19 1995-04-19 Fujitsu Limited Developing apparatus
EP0649071A3 (en) * 1993-10-19 1997-08-06 Fujitsu Ltd Developing apparatus.
US5845184A (en) * 1993-10-19 1998-12-01 Fujitsu Limited Developing unit having improved toner density control

Also Published As

Publication number Publication date
JPH0519153B2 (en) 1993-03-15

Similar Documents

Publication Publication Date Title
JPS5451846A (en) Electrostatic latent image developing device
JPS5541461A (en) Fixing apparatus in electrophotographic copier
JPS6490474A (en) Developing device
EP0125606A1 (en) Apparatus for detecting the reasonable condition of developer in a copying machine
JPS57151976A (en) Developing device
JPS5745573A (en) Development device for magnetic toner
JPS56113172A (en) Development device
US4867100A (en) Developing apparatus
JPS5555370A (en) Magnetic brush developing unit
JPS56159654A (en) Developing method
JPS6421470A (en) Toner replenishing device for electronic photographer
JPS56158357A (en) Developing device
JPS54151840A (en) Development of electrostatic latent image
JPS57115576A (en) Developer
JPS56116061A (en) Magnetic brush developing device
JPS6459270A (en) Developing device
JPS5730859A (en) Magnetic brush developing device
JPS5369636A (en) Liquid developing agent for use in static photography
JPS5555371A (en) Magnetic brush developing unit
JPS5455442A (en) Magnetic brush developing device
JPS5473054A (en) Dry type developer replenishing device
JPS5730860A (en) Electrophotographic developing device
JPS5756869A (en) Magnetic brush development device
ES435831A1 (en) Apparatus for replenishing toner in the development system of a copying machine
JPS56114969A (en) Toner replenishing device