JPS56135849A - Electrophotographic developing method - Google Patents

Electrophotographic developing method

Info

Publication number
JPS56135849A
JPS56135849A JP3823080A JP3823080A JPS56135849A JP S56135849 A JPS56135849 A JP S56135849A JP 3823080 A JP3823080 A JP 3823080A JP 3823080 A JP3823080 A JP 3823080A JP S56135849 A JPS56135849 A JP S56135849A
Authority
JP
Japan
Prior art keywords
holding body
electric field
alternating electric
frequency
carrying body
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
JP3823080A
Other languages
Japanese (ja)
Other versions
JPS644170B2 (en
Inventor
Junichiro Kanbe
Kazuo Isaka
Nagao Hosono
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 JP3823080A priority Critical patent/JPS56135849A/en
Publication of JPS56135849A publication Critical patent/JPS56135849A/en
Publication of JPS644170B2 publication Critical patent/JPS644170B2/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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0907—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with bias voltage

Abstract

PURPOSE:To obtain constantly stable image despite the change in process speed by changing the frequency of the alternating electric field to be applied to a nonimage part according to the peripheral speeds of an electrostatic latent image holding body. CONSTITUTION:An electrostatic latent image holding body 1 having a back electrode formed of a positive electrostatic image by a multistylus electrode and a nonmagnetic developer carrying body 2 including a permanent magnet 3 are opposed by holding a clearance of more than the thickness of the developer layer in a developing part, and are rotated in the same direction at an equal speed. After the insulation-characteristic magnetic toner 5 housed in a toner vessel 7 is carried on the surface of the carrying body 2, the coating thickness is regulated uniformly with a magnetic blade 6 and the low frequency alternating electric field is applied between the image holding body 1 and the carrying body 2 by a power source 9 in such a manner that the electric fields alternate at least in the nonimage part; in addition, the frequency of the alternating electric field is changed in proportion to the peripheral speeds of the holding body 1 by a control device 11.
JP3823080A 1980-03-27 1980-03-27 Electrophotographic developing method Granted JPS56135849A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3823080A JPS56135849A (en) 1980-03-27 1980-03-27 Electrophotographic developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3823080A JPS56135849A (en) 1980-03-27 1980-03-27 Electrophotographic developing method

Publications (2)

Publication Number Publication Date
JPS56135849A true JPS56135849A (en) 1981-10-23
JPS644170B2 JPS644170B2 (en) 1989-01-24

Family

ID=12519497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3823080A Granted JPS56135849A (en) 1980-03-27 1980-03-27 Electrophotographic developing method

Country Status (1)

Country Link
JP (1) JPS56135849A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131555A (en) * 1983-12-20 1985-07-13 Konishiroku Photo Ind Co Ltd Developing method
US7254350B2 (en) 2004-02-19 2007-08-07 Canon Kabushiki Kaisha Image forming apparatus featuring a variable oscillating electric field formed between a developer carrying member and an image bearing member during a developer operation in accordance with a peripheral speed of the image bearing member

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60131555A (en) * 1983-12-20 1985-07-13 Konishiroku Photo Ind Co Ltd Developing method
JPH0451027B2 (en) * 1983-12-20 1992-08-17 Konishiroku Photo Ind
US7254350B2 (en) 2004-02-19 2007-08-07 Canon Kabushiki Kaisha Image forming apparatus featuring a variable oscillating electric field formed between a developer carrying member and an image bearing member during a developer operation in accordance with a peripheral speed of the image bearing member

Also Published As

Publication number Publication date
JPS644170B2 (en) 1989-01-24

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