JPS5737379A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5737379A
JPS5737379A JP11368480A JP11368480A JPS5737379A JP S5737379 A JPS5737379 A JP S5737379A JP 11368480 A JP11368480 A JP 11368480A JP 11368480 A JP11368480 A JP 11368480A JP S5737379 A JPS5737379 A JP S5737379A
Authority
JP
Japan
Prior art keywords
toner
magnetic
magnetic pole
sleeve
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.)
Granted
Application number
JP11368480A
Other languages
Japanese (ja)
Other versions
JPH0139108B2 (en
Inventor
Masaharu Okubo
Akihiko Takeuchi
Kazuo Isaka
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 JP11368480A priority Critical patent/JPS5737379A/en
Publication of JPS5737379A publication Critical patent/JPS5737379A/en
Publication of JPH0139108B2 publication Critical patent/JPH0139108B2/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 eliminate the uneven application of magnetic toner by preventing the toner from being charged more than necessary with a frictional charge without providing any magnetic pole to a magnetic roller between a blade means and a toner shielding means. CONSTITUTION:Between a scraper 8 provided as a toner shielding means of limiting the contact of toner 6 with the back of a sleeve and a blade 5, no magnetic pole is provided in the range R2 of a magnetic roller 1 applied with toner weight in a hopper and opposed to the sleeve surface. Namely, the magnetic roller 1 in the range from a magnetic pole N3 right under the scraper 8 to a magnetic pole S1 right under the blade 5 has no magnetic pole. Consequently, magnetic attracting force attracting toner 6 to the sleeve surface within the range R2 is ceased and the toner comes into contact with the sleeve surface under a uniform pressure of its own weight to apply the toner on the sleeve 2 in uniform thickness.
JP11368480A 1980-08-19 1980-08-19 Developing device Granted JPS5737379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11368480A JPS5737379A (en) 1980-08-19 1980-08-19 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11368480A JPS5737379A (en) 1980-08-19 1980-08-19 Developing device

Publications (2)

Publication Number Publication Date
JPS5737379A true JPS5737379A (en) 1982-03-01
JPH0139108B2 JPH0139108B2 (en) 1989-08-18

Family

ID=14618549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11368480A Granted JPS5737379A (en) 1980-08-19 1980-08-19 Developing device

Country Status (1)

Country Link
JP (1) JPS5737379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051552A (en) * 1983-09-01 1985-03-23 山本電気株式会社 Control circuit in rice-cleaning machine
JPH0623285A (en) * 1992-06-23 1994-02-01 Hosokawa Seisakusho:Kk Circulation changeover type rice milling machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489740A (en) * 1977-12-27 1979-07-17 Canon Inc Electrostatic image developing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5489740A (en) * 1977-12-27 1979-07-17 Canon Inc Electrostatic image developing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051552A (en) * 1983-09-01 1985-03-23 山本電気株式会社 Control circuit in rice-cleaning machine
JPH0623285A (en) * 1992-06-23 1994-02-01 Hosokawa Seisakusho:Kk Circulation changeover type rice milling machine

Also Published As

Publication number Publication date
JPH0139108B2 (en) 1989-08-18

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