JPS56125753A - Developing method - Google Patents

Developing method

Info

Publication number
JPS56125753A
JPS56125753A JP2873680A JP2873680A JPS56125753A JP S56125753 A JPS56125753 A JP S56125753A JP 2873680 A JP2873680 A JP 2873680A JP 2873680 A JP2873680 A JP 2873680A JP S56125753 A JPS56125753 A JP S56125753A
Authority
JP
Japan
Prior art keywords
bias
roller
arrow
sleeve
developing
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
JP2873680A
Other languages
Japanese (ja)
Inventor
Takeshi Watanabe
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 JP2873680A priority Critical patent/JPS56125753A/en
Publication of JPS56125753A publication Critical patent/JPS56125753A/en
Pending 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
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration
    • G03G15/0928—Details concerning the magnetic brush roller structure, e.g. magnet configuration relating to the shell, e.g. structure, composition
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device
    • G03G2215/0643—Electrodes in developing area, e.g. wires, not belonging to the main donor part
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device
    • G03G2215/0651—Electrodes in donor member surface

Landscapes

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

Abstract

PURPOSE:To obtain the image of good quantity by providing separate electrodes before and behind the point where a developer carrying body approaches to an electrostatic latent image holding body, applying AC bias to the former and applying the bias of the polarity reverse to the charge of the toner to the latter. CONSTITUTION:A developing roller 2 is constituted of an outside stationary sleeve 21 and a magnet roller 22, and the roller 22 is rotated in the clockwise direction of an arrow C2'. Also, a developing electrode B1 which applies developing accelerating bias, a photograhic fog removing electrode B2 which applies bias for the purpose of removing the photographic fog, an insulator D1 which prevents the conduction of both electrodes B1 and B2, and insulators D2, D3 which prevent the conduction of both electrodes B1 and B2 to the other parts of the sleeve 21, are provided. A latent image holding body drum 1 rotates in the arrow C1 direction, and the proximity point of the roller 2 to the drum 1 is expressed by A, and the toner on the sleeve 21 rotates in the arrow C3 direction. A doctor blade 3 and a scraper 4 are provided as well.
JP2873680A 1980-03-07 1980-03-07 Developing method Pending JPS56125753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2873680A JPS56125753A (en) 1980-03-07 1980-03-07 Developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2873680A JPS56125753A (en) 1980-03-07 1980-03-07 Developing method

Publications (1)

Publication Number Publication Date
JPS56125753A true JPS56125753A (en) 1981-10-02

Family

ID=12256704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2873680A Pending JPS56125753A (en) 1980-03-07 1980-03-07 Developing method

Country Status (1)

Country Link
JP (1) JPS56125753A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897071A (en) * 1981-12-07 1983-06-09 Ricoh Co Ltd Developing device
JPS58111067A (en) * 1981-12-25 1983-07-01 Ricoh Co Ltd Developing device
JPS59181372A (en) * 1983-03-31 1984-10-15 Toshiba Corp Developing device
JPS6430550U (en) * 1987-08-18 1989-02-23

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897071A (en) * 1981-12-07 1983-06-09 Ricoh Co Ltd Developing device
JPH0415949B2 (en) * 1981-12-07 1992-03-19 Ricoh Kk
JPS58111067A (en) * 1981-12-25 1983-07-01 Ricoh Co Ltd Developing device
JPH0451831B2 (en) * 1981-12-25 1992-08-20 Ricoh Kk
JPS59181372A (en) * 1983-03-31 1984-10-15 Toshiba Corp Developing device
JPH0446428B2 (en) * 1983-03-31 1992-07-29 Tokyo Shibaura Electric Co
JPS6430550U (en) * 1987-08-18 1989-02-23

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