JPS5793371A - Developing method - Google Patents

Developing method

Info

Publication number
JPS5793371A
JPS5793371A JP55170632A JP17063280A JPS5793371A JP S5793371 A JPS5793371 A JP S5793371A JP 55170632 A JP55170632 A JP 55170632A JP 17063280 A JP17063280 A JP 17063280A JP S5793371 A JPS5793371 A JP S5793371A
Authority
JP
Japan
Prior art keywords
electric field
roller
intensity
transfer
pulsating current
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
JP55170632A
Other languages
Japanese (ja)
Other versions
JPS645293B2 (en
Inventor
Toru Takahashi
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 JP55170632A priority Critical patent/JPS5793371A/en
Publication of JPS5793371A publication Critical patent/JPS5793371A/en
Publication of JPS645293B2 publication Critical patent/JPS645293B2/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
    • 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
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/081—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer handling means after the supply and before the regulating, e.g. means for preventing developer blocking
    • 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
    • G03G2215/0641—Without separate supplying member (i.e. with developing housing sliding on donor member)

Landscapes

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

Abstract

PURPOSE:To perform developing of high gradation characteristic by applying AC or pulsating current bias between a conductive elastic roller and a support electrode of an electrostatic image holding layer. CONSTITUTION:Voltage of AC or pulsating current is applied from a bias source 9 to between the front and rear regions of the nearest contact point P between a support electrode 1 of an electrostatic image holding body and a conductive developing roller 3, and an electric field in accordance with this is formed. In the bright part in this electric field formation, the intensity of the electric field is controlled smaller than the threshold electric field intensity for the purpose of transfer at the electric field in the direction where the toner transfers from the surface of a roller surface layer 5 to an image plane 2 to prevent brackground staining, and is set larger than the threshold electric field intensity for the purpose of transfer in the direction of returning the toner transferred to the image plane to the roller surface at the interface in said direction, whereby photographing fogs are prevented.
JP55170632A 1980-12-02 1980-12-02 Developing method Granted JPS5793371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55170632A JPS5793371A (en) 1980-12-02 1980-12-02 Developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55170632A JPS5793371A (en) 1980-12-02 1980-12-02 Developing method

Publications (2)

Publication Number Publication Date
JPS5793371A true JPS5793371A (en) 1982-06-10
JPS645293B2 JPS645293B2 (en) 1989-01-30

Family

ID=15908466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55170632A Granted JPS5793371A (en) 1980-12-02 1980-12-02 Developing method

Country Status (1)

Country Link
JP (1) JPS5793371A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107860U (en) * 1983-12-19 1985-07-22 京セラ株式会社 dry developing device
JPS60208780A (en) * 1984-04-03 1985-10-21 Matsushita Electric Ind Co Ltd developer supply device
JPS60233676A (en) * 1984-05-07 1985-11-20 Fuji Xerox Co Ltd Developing device using nonmagnetic one component developer
JPS61140368U (en) * 1985-02-20 1986-08-30
JPS62125251U (en) * 1986-01-31 1987-08-08
JPH0749604A (en) * 1993-06-04 1995-02-21 Bridgestone Corp Operating method of conductive member

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614242A (en) * 1979-07-16 1981-02-12 Canon Inc Electrostatic developing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5614242A (en) * 1979-07-16 1981-02-12 Canon Inc Electrostatic developing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107860U (en) * 1983-12-19 1985-07-22 京セラ株式会社 dry developing device
JPS60208780A (en) * 1984-04-03 1985-10-21 Matsushita Electric Ind Co Ltd developer supply device
JPS60233676A (en) * 1984-05-07 1985-11-20 Fuji Xerox Co Ltd Developing device using nonmagnetic one component developer
JPS61140368U (en) * 1985-02-20 1986-08-30
JPS62125251U (en) * 1986-01-31 1987-08-08
JPH0749604A (en) * 1993-06-04 1995-02-21 Bridgestone Corp Operating method of conductive member

Also Published As

Publication number Publication date
JPS645293B2 (en) 1989-01-30

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