JPS57155565A - Developing device - Google Patents

Developing device

Info

Publication number
JPS57155565A
JPS57155565A JP56040740A JP4074081A JPS57155565A JP S57155565 A JPS57155565 A JP S57155565A JP 56040740 A JP56040740 A JP 56040740A JP 4074081 A JP4074081 A JP 4074081A JP S57155565 A JPS57155565 A JP S57155565A
Authority
JP
Japan
Prior art keywords
developer
vessel
developing
bar
clearance
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
JP56040740A
Other languages
Japanese (ja)
Inventor
Tsutomu Toyono
Takashi Saito
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP56040740A priority Critical patent/JPS57155565A/en
Publication of JPS57155565A publication Critical patent/JPS57155565A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09Apparatus 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)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To increase the voids of a developer and to prevent the coagulation of the developer by recovering the powder developer after the end of developing, and passing the developer through intermagnetism gaps. CONSTITUTION:The developer in a developing vessel 4 is conveyed by a magnetic roller 6 to a developing part D, and the developer after development is recovered again into the vessel. The developer scraped from the sleeve by a scraper 8 is passed between a pair of magnet rollers 9 and 10 of mutually different magnetic poles which face each other. In a clearance A, the developer ears up to form voids and is pushed upward in a bulky state. In the upper part of the clearance A, the developer is agitated by an agitating bar 11, and is mixed with the fresh developer replenished from above the vessel. The developer homogenized in this way is used for development. The avoids are improved further if the agitating bar is made hollow and air is blown through the hole provided to this bar.
JP56040740A 1981-03-20 1981-03-20 Developing device Pending JPS57155565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56040740A JPS57155565A (en) 1981-03-20 1981-03-20 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040740A JPS57155565A (en) 1981-03-20 1981-03-20 Developing device

Publications (1)

Publication Number Publication Date
JPS57155565A true JPS57155565A (en) 1982-09-25

Family

ID=12589024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040740A Pending JPS57155565A (en) 1981-03-20 1981-03-20 Developing device

Country Status (1)

Country Link
JP (1) JPS57155565A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02273770A (en) * 1989-04-17 1990-11-08 Kyocera Corp Developing device possessing fixed magnetic assembly
JPH04330473A (en) * 1991-01-31 1992-11-18 Ricoh Co Ltd Developing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02273770A (en) * 1989-04-17 1990-11-08 Kyocera Corp Developing device possessing fixed magnetic assembly
JPH04330473A (en) * 1991-01-31 1992-11-18 Ricoh Co Ltd Developing device

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