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JPS5796373A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS5796373A
JPS5796373A JP55173623A JP17362380A JPS5796373A JP S5796373 A JPS5796373 A JP S5796373A JP 55173623 A JP55173623 A JP 55173623A JP 17362380 A JP17362380 A JP 17362380A JP S5796373 A JPS5796373 A JP S5796373A
Authority
JP
Japan
Prior art keywords
developer
sleeve
groove
scraping member
coloring
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
JP55173623A
Other languages
Japanese (ja)
Inventor
Toshio Kaneko
Hiroharu Suzuki
Hajime Koyama
Shigekazu Enoki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55173623A priority Critical patent/JPS5796373A/en
Publication of JPS5796373A publication Critical patent/JPS5796373A/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
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device

Landscapes

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

Abstract

PURPOSE:To perform a satisfactory development by making plural coloring particles adhere onto an electrostatic latent image in a constant ratio, and also to prevent abrasion of a scraping member, by using a developing sleeve obtained by performing a coarse surface treatment of 1/5-1/2 of particle size of a developer to its surface. CONSTITUTION:A control member 13 for controlling the quantity of a developer carried by a sleeve 5, and a scraping member 14 for removing it from the surface of the sleeve 5 are placed near the outlet of a developer vessel 4, and also on the surface of the sleeve 5, a lot of groove 15 are formed in its axial direction. This groove 15 is formed within the range of 1/5-1/2 of the diameter of a coloring particle so as to have such depth as one coloring particle being a developer does not enter into this groove entirely, therefore, abrasion of the scraping member 14 is reduced, also developers of 2 kinds or more can be mixed sufficiently, and the development is performed satisfactorily.
JP55173623A 1980-12-09 1980-12-09 Magnetic brush developing device Pending JPS5796373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55173623A JPS5796373A (en) 1980-12-09 1980-12-09 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55173623A JPS5796373A (en) 1980-12-09 1980-12-09 Magnetic brush developing device

Publications (1)

Publication Number Publication Date
JPS5796373A true JPS5796373A (en) 1982-06-15

Family

ID=15964036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55173623A Pending JPS5796373A (en) 1980-12-09 1980-12-09 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS5796373A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394461U (en) * 1986-12-09 1988-06-17
JP2009003425A (en) * 2007-04-30 2009-01-08 Punch Graphix Internatl Nv A developing roller that provides a magnetic brush for an electrostatic printing or copying machine, a developing unit for printing or copying markings on a medium, an electrostatic printing or copying machine apparatus, and electrostatic marking on a medium How to print or copy to

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6394461U (en) * 1986-12-09 1988-06-17
JP2009003425A (en) * 2007-04-30 2009-01-08 Punch Graphix Internatl Nv A developing roller that provides a magnetic brush for an electrostatic printing or copying machine, a developing unit for printing or copying markings on a medium, an electrostatic printing or copying machine apparatus, and electrostatic marking on a medium How to print or copy to

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