JPS5730874A - Method and device for electrophotographic copying - Google Patents

Method and device for electrophotographic copying

Info

Publication number
JPS5730874A
JPS5730874A JP10431280A JP10431280A JPS5730874A JP S5730874 A JPS5730874 A JP S5730874A JP 10431280 A JP10431280 A JP 10431280A JP 10431280 A JP10431280 A JP 10431280A JP S5730874 A JPS5730874 A JP S5730874A
Authority
JP
Japan
Prior art keywords
drum
magnetic pole
magnet
toner
sleeve
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
JP10431280A
Other languages
Japanese (ja)
Other versions
JPS6337391B2 (en
Inventor
Toshio 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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP10431280A priority Critical patent/JPS5730874A/en
Publication of JPS5730874A publication Critical patent/JPS5730874A/en
Publication of JPS6337391B2 publication Critical patent/JPS6337391B2/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
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0047—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices

Landscapes

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

Abstract

PURPOSE:To perform good cleaning with a device serving also as a developing device by adjusting the position of a magnet of a magnet roll thereby controlling the toner packing density between the same and a photosensitive drum. CONSTITUTION:A magnet forming a magnet roll together with a revolving sleeve 3 is formed of 8 pieces of magnetic poles N1..., S1..., and only the angle alpha between the developing magnetic pole N1 and the cleaning magnetic pole S1 is settled at 35.2 deg. and that between the other magnetic poles are settled at 46.4 deg. or the like. When this magnetic pole N1 is opposed to a photosensitive drum 1, the trimming magnetic pole S2 is fixed in a position of 23.2 deg. behind a trimmer plate and when the sleeve 3 is rotated at a prescribed speed, the toner packing density between the drum 1 and the sleeve 3 is made prescribed density. The latent images of the drum 1 are developed by the conveyance of a correct constant amount of the toner. On the other hand, when the cleaning magnetic pole S1 is made oppose to the drum 1 by turning the magnet 4 35.2 deg. right, the toner packing density between the drum 1 and the sleeve 3 is increased and the surface of the drum 1 is rubbed by the magnetic toner, whereby cleaning is accomplished satisfactorily.
JP10431280A 1980-07-31 1980-07-31 Method and device for electrophotographic copying Granted JPS5730874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10431280A JPS5730874A (en) 1980-07-31 1980-07-31 Method and device for electrophotographic copying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10431280A JPS5730874A (en) 1980-07-31 1980-07-31 Method and device for electrophotographic copying

Publications (2)

Publication Number Publication Date
JPS5730874A true JPS5730874A (en) 1982-02-19
JPS6337391B2 JPS6337391B2 (en) 1988-07-25

Family

ID=14377402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10431280A Granted JPS5730874A (en) 1980-07-31 1980-07-31 Method and device for electrophotographic copying

Country Status (1)

Country Link
JP (1) JPS5730874A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134571A (en) * 1984-07-26 1986-02-18 Fuji Xerox Co Ltd One-component developing device
US4891671A (en) * 1987-06-10 1990-01-02 Fujitsu Limited Magnetic brush developing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134571A (en) * 1984-07-26 1986-02-18 Fuji Xerox Co Ltd One-component developing device
JPH0528382B2 (en) * 1984-07-26 1993-04-26 Fuji Xerox Co Ltd
US4891671A (en) * 1987-06-10 1990-01-02 Fujitsu Limited Magnetic brush developing device

Also Published As

Publication number Publication date
JPS6337391B2 (en) 1988-07-25

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