JPS56168673A - Developing device - Google Patents

Developing device

Info

Publication number
JPS56168673A
JPS56168673A JP7183880A JP7183880A JPS56168673A JP S56168673 A JPS56168673 A JP S56168673A JP 7183880 A JP7183880 A JP 7183880A JP 7183880 A JP7183880 A JP 7183880A JP S56168673 A JPS56168673 A JP S56168673A
Authority
JP
Japan
Prior art keywords
sleeve
toner
arrow
conveyance
proximity
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
JP7183880A
Other languages
Japanese (ja)
Other versions
JPS643261B2 (en
Inventor
Takaharu Goto
Koji Noguchi
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 JP7183880A priority Critical patent/JPS56168673A/en
Publication of JPS56168673A publication Critical patent/JPS56168673A/en
Publication of JPS643261B2 publication Critical patent/JPS643261B2/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
    • G03G15/0907—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with bias voltage

Landscapes

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

Abstract

PURPOSE:To regulate or block the amount of the magnetic toner without using any mechanical means by providing a conductive member in proximity to the longitudinal direction of a nonmagnetic cylindrical sleeve, and forming an electric field between the same and the sleeve. CONSTITUTION:A cylindrical sleeve 1 is fixed and a magnet roll 2 rotates in an arrow (x) direction. An electrode 9 is disposed in proximity to the longitudinal direction of the sleeve 1, and is so connected to a power source 10 that an electric field is formed between the same and the sleeve 1. If with this constitution a switch 11 is closed while the magnetic toner 41 is being conveyed in an arrow (y) direction, the rate of conveyance of the toner 41 decreases. This developing begins to take place under 400V voltage, and at 1,000-1,500V, the conveyance of the toner 41 in the arrow (y) direction is blocked. Thereby, the amount of the toner on the sleeve 1 is regulated, and it is possible to annihilate a toner well 42 at such a time when the device is not going to be used for a long period of time.
JP7183880A 1980-05-29 1980-05-29 Developing device Granted JPS56168673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7183880A JPS56168673A (en) 1980-05-29 1980-05-29 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7183880A JPS56168673A (en) 1980-05-29 1980-05-29 Developing device

Publications (2)

Publication Number Publication Date
JPS56168673A true JPS56168673A (en) 1981-12-24
JPS643261B2 JPS643261B2 (en) 1989-01-20

Family

ID=13472074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7183880A Granted JPS56168673A (en) 1980-05-29 1980-05-29 Developing device

Country Status (1)

Country Link
JP (1) JPS56168673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149076A (en) * 1982-03-02 1983-09-05 Ricoh Co Ltd Dry type developing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112750A (en) * 1977-03-14 1978-10-02 Fuji Photo Film Co Ltd Developing device
JPS5496044A (en) * 1978-01-14 1979-07-30 Toshiba Corp Developing device of electrostatic latent images
JPS54155043A (en) * 1978-05-26 1979-12-06 Ricoh Co Ltd Method of developing electrostatic latent image

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112750A (en) * 1977-03-14 1978-10-02 Fuji Photo Film Co Ltd Developing device
JPS5496044A (en) * 1978-01-14 1979-07-30 Toshiba Corp Developing device of electrostatic latent images
JPS54155043A (en) * 1978-05-26 1979-12-06 Ricoh Co Ltd Method of developing electrostatic latent image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58149076A (en) * 1982-03-02 1983-09-05 Ricoh Co Ltd Dry type developing device

Also Published As

Publication number Publication date
JPS643261B2 (en) 1989-01-20

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