JPS57207267A - Developing device - Google Patents

Developing device

Info

Publication number
JPS57207267A
JPS57207267A JP9330381A JP9330381A JPS57207267A JP S57207267 A JPS57207267 A JP S57207267A JP 9330381 A JP9330381 A JP 9330381A JP 9330381 A JP9330381 A JP 9330381A JP S57207267 A JPS57207267 A JP S57207267A
Authority
JP
Japan
Prior art keywords
toner
sleeve
spacing
photosensitive drum
electrostatic
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
JP9330381A
Other languages
Japanese (ja)
Inventor
Hidenobu Yamane
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP9330381A priority Critical patent/JPS57207267A/en
Publication of JPS57207267A publication Critical patent/JPS57207267A/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

Landscapes

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

Abstract

PURPOSE:To eliminate the need for the well of a toner and to develop the toner of relatively high electric resistance easily by forming the toner in a thin layer and reducing the spacing between a photosensitive drum and a sleeve similarly to the thickness of the toner layer. CONSTITUTION:A developing roller is constituted of a cylindrical sleeve 1 consisting of a non-magnetic material, and a magnet roller 2 which is provided freely rotatably in said sleeve 1 and of which the magnetic poles on the outside circumference are magnetized successively differently. The spacing A between the sleeve 1 and a photosensitive drum 4 is reduced and a toner layer thickness B is correspondingly reduced. Electrostatic charge is induced early in a toner 3 by electrostatic induction and inductive polarization, whereby it is attracted on the electrostatic latent images of the drum 4 and the toner images are formed.
JP9330381A 1981-06-16 1981-06-16 Developing device Pending JPS57207267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9330381A JPS57207267A (en) 1981-06-16 1981-06-16 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9330381A JPS57207267A (en) 1981-06-16 1981-06-16 Developing device

Publications (1)

Publication Number Publication Date
JPS57207267A true JPS57207267A (en) 1982-12-18

Family

ID=14078569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9330381A Pending JPS57207267A (en) 1981-06-16 1981-06-16 Developing device

Country Status (1)

Country Link
JP (1) JPS57207267A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6686889B1 (en) 1998-12-08 2004-02-03 Tae I. Kwon Method and apparatus for antenna orientation and antenna with the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6686889B1 (en) 1998-12-08 2004-02-03 Tae I. Kwon Method and apparatus for antenna orientation and antenna with the same

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