JPS55134863A - Electrophotographic developing method - Google Patents

Electrophotographic developing method

Info

Publication number
JPS55134863A
JPS55134863A JP4233579A JP4233579A JPS55134863A JP S55134863 A JPS55134863 A JP S55134863A JP 4233579 A JP4233579 A JP 4233579A JP 4233579 A JP4233579 A JP 4233579A JP S55134863 A JPS55134863 A JP S55134863A
Authority
JP
Japan
Prior art keywords
bias voltage
image
bias
frequency
temporary
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
JP4233579A
Other languages
Japanese (ja)
Other versions
JPS6333143B2 (en
Inventor
Masaharu Okubo
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 JP4233579A priority Critical patent/JPS55134863A/en
Publication of JPS55134863A publication Critical patent/JPS55134863A/en
Publication of JPS6333143B2 publication Critical patent/JPS6333143B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To obtain an image free of image unevenness, high in image density, and low in fog, by inserting an impedance device between a bias source and a development electrode and setting the frequency of the bias voltage to a given value. CONSTITUTION:During operation of an electrophotographic apparatus, developer resistance drops instantaneously due to temporary developer compression, contact, or the like, dielectric breakdown occurs temporarily, and the conditions where the bias voltage is not applied to the developing electrode for an instant occur, resulting in causing image unevenness due to temporary bias voltage drop when the bias to be applied is of DC. Therefore, power source 45 for applying low frequency AC bias voltage to sleeves 36A, 36B and protective resistor 46 as an impedance device are installed to form a good image and image unevenness is prevented by setting f<1/2t, where f is the AC frequency to be applied and t is the maximal time of the bias voltage leak, and retaining the effect of bias voltage even in bias voltage leak.
JP4233579A 1979-04-06 1979-04-06 Electrophotographic developing method Granted JPS55134863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4233579A JPS55134863A (en) 1979-04-06 1979-04-06 Electrophotographic developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4233579A JPS55134863A (en) 1979-04-06 1979-04-06 Electrophotographic developing method

Publications (2)

Publication Number Publication Date
JPS55134863A true JPS55134863A (en) 1980-10-21
JPS6333143B2 JPS6333143B2 (en) 1988-07-04

Family

ID=12633131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4233579A Granted JPS55134863A (en) 1979-04-06 1979-04-06 Electrophotographic developing method

Country Status (1)

Country Link
JP (1) JPS55134863A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164777A (en) * 1981-04-03 1982-10-09 Fuji Xerox Co Ltd Magnetic brush cleaner
JPS58184158A (en) * 1982-04-21 1983-10-27 Konishiroku Photo Ind Co Ltd Developing method of electrostatic image
JPS5967565A (en) * 1982-10-08 1984-04-17 Minolta Camera Co Ltd Electrostatic latent image developing method
JPS59181362A (en) * 1983-03-31 1984-10-15 Konishiroku Photo Ind Co Ltd Developing method
JPS60163065A (en) * 1984-02-01 1985-08-24 ゼロツクス　コーポレーシヨン Photoelectronic copying machine
JPS60179766A (en) * 1984-02-27 1985-09-13 Konishiroku Photo Ind Co Ltd Developing device
JPS62251771A (en) * 1986-04-25 1987-11-02 Fuji Xerox Co Ltd One-component development device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893418A (en) * 1974-05-30 1975-07-08 Xerox Corp Xerographic developing apparatus
JPS5288035A (en) * 1976-01-19 1977-07-22 Fuji Xerox Co Ltd Power source device for electronic copying machine
JPS533337A (en) * 1976-06-28 1978-01-13 Eastman Kodak Co Method of developing electrophotographic image by causing dielectric breakdown in developer
JPS5362529A (en) * 1976-11-12 1978-06-05 Hoechst Ag Method of and device for developing electrostatic charged latent image by electronic photographing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893418A (en) * 1974-05-30 1975-07-08 Xerox Corp Xerographic developing apparatus
JPS5288035A (en) * 1976-01-19 1977-07-22 Fuji Xerox Co Ltd Power source device for electronic copying machine
JPS533337A (en) * 1976-06-28 1978-01-13 Eastman Kodak Co Method of developing electrophotographic image by causing dielectric breakdown in developer
JPS5362529A (en) * 1976-11-12 1978-06-05 Hoechst Ag Method of and device for developing electrostatic charged latent image by electronic photographing method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164777A (en) * 1981-04-03 1982-10-09 Fuji Xerox Co Ltd Magnetic brush cleaner
JPH0159587B2 (en) * 1981-04-03 1989-12-18 Fuji Xerox Co Ltd
JPS58184158A (en) * 1982-04-21 1983-10-27 Konishiroku Photo Ind Co Ltd Developing method of electrostatic image
JPS5967565A (en) * 1982-10-08 1984-04-17 Minolta Camera Co Ltd Electrostatic latent image developing method
JPH041909B2 (en) * 1982-10-08 1992-01-14 Minolta Camera Kk
JPS59181362A (en) * 1983-03-31 1984-10-15 Konishiroku Photo Ind Co Ltd Developing method
JPS60163065A (en) * 1984-02-01 1985-08-24 ゼロツクス　コーポレーシヨン Photoelectronic copying machine
JPS60179766A (en) * 1984-02-27 1985-09-13 Konishiroku Photo Ind Co Ltd Developing device
JPH0444752B2 (en) * 1984-02-27 1992-07-22 Konishiroku Photo Ind
JPS62251771A (en) * 1986-04-25 1987-11-02 Fuji Xerox Co Ltd One-component development device

Also Published As

Publication number Publication date
JPS6333143B2 (en) 1988-07-04

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