JPS57120947A - Method for development - Google Patents

Method for development

Info

Publication number
JPS57120947A
JPS57120947A JP56007025A JP702581A JPS57120947A JP S57120947 A JPS57120947 A JP S57120947A JP 56007025 A JP56007025 A JP 56007025A JP 702581 A JP702581 A JP 702581A JP S57120947 A JPS57120947 A JP S57120947A
Authority
JP
Japan
Prior art keywords
toner
humidity
polymer
electrically
friction
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
JP56007025A
Other languages
Japanese (ja)
Inventor
Yasuo Mihashi
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 JP56007025A priority Critical patent/JPS57120947A/en
Publication of JPS57120947A publication Critical patent/JPS57120947A/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

Landscapes

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

Abstract

PURPOSE:To develop with an electrically insulative toner which is not affected by humidity and has excellent electrical charging property even in an environment of lower humidity and provides clear images, by forming the surface of members (sleeve etc.) which charge electrically developing powder by friction, with a porous high polymer resin. CONSTITUTION:A multipolar permanent magnet 9, for example, is fixed and a nonmagnetic cylinder 4b is rotated in an arrow direction and an electrically insulative magnetic toner 11 consisting of one component is electrically charged by friction and then an electrostatic latent image on a photoreceptor 1 is developed. In this case, the material prepared by mixing a high polymer such as polyphenylene oxide with a solute such as polymer, which is soluble into the solvent insoluble for said high polymers, is covered onto the surface of the cylinder 4b. And then, a sleeve haveing a porous surface is formed after eluting above mentioned soluble polymer, etc. Thereby, the frictional resistance of the surface is increased and a uniform coating layer of toner is obtained even in lower humidity. Also, excellent fluidity of the toner is attained even in high humidity, and a clear development which does not occur unevenness of coating and flocculation of toners, etc. is performed.
JP56007025A 1981-01-20 1981-01-20 Method for development Pending JPS57120947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56007025A JPS57120947A (en) 1981-01-20 1981-01-20 Method for development

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56007025A JPS57120947A (en) 1981-01-20 1981-01-20 Method for development

Publications (1)

Publication Number Publication Date
JPS57120947A true JPS57120947A (en) 1982-07-28

Family

ID=11654494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56007025A Pending JPS57120947A (en) 1981-01-20 1981-01-20 Method for development

Country Status (1)

Country Link
JP (1) JPS57120947A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176961A (en) * 1985-01-31 1986-08-08 Ricoh Co Ltd Developing device
JPS61180267A (en) * 1984-12-14 1986-08-12 ゼロツクス　コ−ポレ−シヨン Toner charger
US5057871A (en) * 1989-03-16 1991-10-15 Fujitsu Limited Developing device having a conductive porous toner-removing roller
US5062385A (en) * 1989-05-11 1991-11-05 Fujitsu Limited Open-cell foam developing roller
US5076201A (en) * 1989-03-16 1991-12-31 Fujitsu Limited Developing device used in electrophotographic field and method of producing developing roller incorporated therein
US5097294A (en) * 1989-03-20 1992-03-17 Fujitsu Limited Developing device used in electrophotographic field with a one-component developer and having a blade member for developer layer thickness regulation
US5164773A (en) * 1989-06-21 1992-11-17 Fujitsu Limited Developing device used in electrophotographic field
US5548382A (en) * 1989-08-01 1996-08-20 Fujitsu Limited Developing apparatus for improving the durability of the latent image holding member

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61180267A (en) * 1984-12-14 1986-08-12 ゼロツクス　コ−ポレ−シヨン Toner charger
JPS61176961A (en) * 1985-01-31 1986-08-08 Ricoh Co Ltd Developing device
US5057871A (en) * 1989-03-16 1991-10-15 Fujitsu Limited Developing device having a conductive porous toner-removing roller
US5076201A (en) * 1989-03-16 1991-12-31 Fujitsu Limited Developing device used in electrophotographic field and method of producing developing roller incorporated therein
US5097294A (en) * 1989-03-20 1992-03-17 Fujitsu Limited Developing device used in electrophotographic field with a one-component developer and having a blade member for developer layer thickness regulation
US5062385A (en) * 1989-05-11 1991-11-05 Fujitsu Limited Open-cell foam developing roller
US5164773A (en) * 1989-06-21 1992-11-17 Fujitsu Limited Developing device used in electrophotographic field
US5548382A (en) * 1989-08-01 1996-08-20 Fujitsu Limited Developing apparatus for improving the durability of the latent image holding member

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