JPS57104956A - Background fog preventing device for electrophotography - Google Patents

Background fog preventing device for electrophotography

Info

Publication number
JPS57104956A
JPS57104956A JP18131080A JP18131080A JPS57104956A JP S57104956 A JPS57104956 A JP S57104956A JP 18131080 A JP18131080 A JP 18131080A JP 18131080 A JP18131080 A JP 18131080A JP S57104956 A JPS57104956 A JP S57104956A
Authority
JP
Japan
Prior art keywords
toner
roll
development
electrophotography
reverse polarity
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
JP18131080A
Other languages
Japanese (ja)
Inventor
Kaneyoshi Miura
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 JP18131080A priority Critical patent/JPS57104956A/en
Publication of JPS57104956A publication Critical patent/JPS57104956A/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

Landscapes

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

Abstract

PURPOSE:To perform the development with no fog, by previously eliminating the toner of reserve polarity or the toner of low charge existing on a development roll. CONSTITUTION:A roll 5 has a certain circumferential speed to a development roll 2 and a surface made of the same group material to the toner in terms of a photoreceptor and a friction charge train. Such roll 5 is set so as to have a contact to the developer on the roll 2. The low-charge toner is stuck to the roll 5, and the stuck toner is scraped off by a blade 6 to be deleted. The bias voltage of the reverse polarity and the toner of reverse polarity is applied to the roll 5. Thus the toner of reverse polarity is also removed.
JP18131080A 1980-12-23 1980-12-23 Background fog preventing device for electrophotography Pending JPS57104956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18131080A JPS57104956A (en) 1980-12-23 1980-12-23 Background fog preventing device for electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18131080A JPS57104956A (en) 1980-12-23 1980-12-23 Background fog preventing device for electrophotography

Publications (1)

Publication Number Publication Date
JPS57104956A true JPS57104956A (en) 1982-06-30

Family

ID=16098434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18131080A Pending JPS57104956A (en) 1980-12-23 1980-12-23 Background fog preventing device for electrophotography

Country Status (1)

Country Link
JP (1) JPS57104956A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176056A (en) * 1984-02-22 1985-09-10 Minolta Camera Co Ltd Method for developing electrostatic latent image
JPS61228477A (en) * 1985-04-01 1986-10-11 ゼロツクス　コーポレーシヨン Developer
JPS63265276A (en) * 1987-04-23 1988-11-01 Sharp Corp Image forming device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176056A (en) * 1984-02-22 1985-09-10 Minolta Camera Co Ltd Method for developing electrostatic latent image
JPS61228477A (en) * 1985-04-01 1986-10-11 ゼロツクス　コーポレーシヨン Developer
JPS63265276A (en) * 1987-04-23 1988-11-01 Sharp Corp Image forming device

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