JPS5518657A - Electrophotographic developing method - Google Patents

Electrophotographic developing method

Info

Publication number
JPS5518657A
JPS5518657A JP9210678A JP9210678A JPS5518657A JP S5518657 A JPS5518657 A JP S5518657A JP 9210678 A JP9210678 A JP 9210678A JP 9210678 A JP9210678 A JP 9210678A JP S5518657 A JPS5518657 A JP S5518657A
Authority
JP
Japan
Prior art keywords
toner carrier
holder
electrostatic image
electrostatic
gap
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
JP9210678A
Other languages
Japanese (ja)
Other versions
JPS6342256B2 (en
Inventor
Junichiro Kanbe
Tsutomu Toyono
Nagao Hosono
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
Priority to JP9210678A priority Critical patent/JPS5518657A/en
Application filed by Canon Inc filed Critical Canon Inc
Priority to CA000332015A priority patent/CA1138723A/en
Priority to AU49116/79A priority patent/AU531301B2/en
Priority to GB7925725A priority patent/GB2028176B/en
Priority to DE19792930619 priority patent/DE2930619A1/en
Priority to FR7919482A priority patent/FR2433780B1/en
Publication of JPS5518657A publication Critical patent/JPS5518657A/en
Priority to US06/264,516 priority patent/US4395476A/en
Priority to US06/426,979 priority patent/US4473627A/en
Priority to SG243/83A priority patent/SG24383G/en
Priority to HK357/84A priority patent/HK35784A/en
Priority to US07/022,598 priority patent/US4913088A/en
Publication of JPS6342256B2 publication Critical patent/JPS6342256B2/ja
Priority to US07/455,243 priority patent/US5044310A/en
Priority to US07/545,134 priority patent/US5032485A/en
Priority to US07/671,019 priority patent/US5096798A/en
Priority to US07/741,077 priority patent/US5194359A/en
Granted legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To obtain visible images excelling in gradient by enhancing the reproducibility of picture image, by applying alternating field to the developing gap between the toner carrier and electrostatic image holder from outside, and enlarging the distance of said gap.
CONSTITUTION: An electrostatic image holder 11 and a toner carrier 12 are held at a gap of 100 to 500μ in the initial period in the developing section, and AC voltage of frequency f ≤1,000Hz is applied in the space between the toner carrier 12 and a back electrode 18 of the electrostatic image holder 11 from a power source 16, which causes the toner particles to move reciprocally in the non-picture image part between the electrostatic holder 11 and the toner carrier, A motor 14 is controlled by a timing circuit 17, and after lapse of 0.2sec, the electrostatic image holder 11 is spaced from the toner carrier 12, and the toner particles are moved in one direction from the toner carrier 12 to the picture image part of the electrostatic image holder 11, and from the non-picture image part to the toner carrier 12 in one way.
COPYRIGHT: (C)1980,JPO&Japio
JP9210678A 1978-07-28 1978-07-28 Electrophotographic developing method Granted JPS5518657A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
JP9210678A JPS5518657A (en) 1978-07-28 1978-07-28 Electrophotographic developing method
CA000332015A CA1138723A (en) 1978-07-28 1979-07-18 Developing method for developer transfer under electrical bias and apparatus therefor
AU49116/79A AU531301B2 (en) 1978-07-28 1979-07-20 Developing with an electrical bias
GB7925725A GB2028176B (en) 1978-07-28 1979-07-24 Developing method for developer transfer under electrical bias
DE19792930619 DE2930619A1 (en) 1978-07-28 1979-07-27 METHOD FOR DEVELOPING A LATENT IMAGE AND DEVICE THEREFOR
FR7919482A FR2433780B1 (en) 1978-07-28 1979-07-27 DEVELOPMENT METHOD WITH TRANSFER OF THE DEVELOPMENT AGENT UNDER ELECTRICAL POLARIZATION AND APPARATUS FOR CARRYING OUT SAID METHOD
US06/264,516 US4395476A (en) 1978-07-28 1981-05-18 Developing method for developer transfer under A.C. electrical bias and apparatus therefor
US06/426,979 US4473627A (en) 1978-07-28 1982-09-29 Developing method for developer transfer under electrical bias and apparatus therefor
SG243/83A SG24383G (en) 1978-07-28 1983-05-11 Development of electrostatic latent images
HK357/84A HK35784A (en) 1978-07-28 1984-04-26 Development of electrostatic latent images
US07/022,598 US4913088A (en) 1978-07-28 1987-03-04 Apparatus for developer transfer under electrical bias
US07/455,243 US5044310A (en) 1978-07-28 1989-12-22 Developing apparatus for non-magnetic developer
US07/545,134 US5032485A (en) 1978-07-28 1990-06-27 Developing method for one-component developer
US07/671,019 US5096798A (en) 1978-07-28 1991-03-18 Developing method for one-component developer
US07/741,077 US5194359A (en) 1978-07-28 1991-08-06 Developing method for one component developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9210678A JPS5518657A (en) 1978-07-28 1978-07-28 Electrophotographic developing method

Publications (2)

Publication Number Publication Date
JPS5518657A true JPS5518657A (en) 1980-02-08
JPS6342256B2 JPS6342256B2 (en) 1988-08-22

Family

ID=14045177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9210678A Granted JPS5518657A (en) 1978-07-28 1978-07-28 Electrophotographic developing method

Country Status (1)

Country Link
JP (1) JPS5518657A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157483A (en) * 1987-06-22 1992-10-20 Konica Corporation Multicolor image forming method and apparatus
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
US5338894A (en) * 1990-09-21 1994-08-16 Canon Kabushiki Kaisha Image forming method with improved development
US5348829A (en) * 1991-11-08 1994-09-20 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5550619A (en) * 1993-01-13 1996-08-27 Matsushita Electric Industrial Co., Ltd. Electrophotographic apparatus of improved low image density
JP2010217605A (en) * 2009-03-17 2010-09-30 Ricoh Co Ltd Developing device, image forming apparatus, and process cartridge
US8374530B2 (en) 2005-07-25 2013-02-12 Afit Corporation Methods and apparatus for developing an electrostatic latent image using conductive particles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02115855U (en) * 1989-03-06 1990-09-17

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030537A (en) * 1973-02-15 1975-03-26
GB1458766A (en) * 1973-02-15 1976-12-15 Xerox Corp Xerographic developing apparatus
JPS5217417A (en) * 1975-07-31 1977-02-09 Sanyo Chem Ind Ltd Process for removal of compound to cause abnormal polymerization
JPS533237A (en) * 1976-06-29 1978-01-12 Ricoh Co Ltd One component type developing toner
JPS533337A (en) * 1976-06-28 1978-01-13 Eastman Kodak Co Method of developing electrophotographic image by causing dielectric breakdown in developer
JPS5359430A (en) * 1976-06-09 1978-05-29 Konishiroku Photo Ind Co Ltd Electrostatic latent image developer
US4102305A (en) * 1977-07-01 1978-07-25 Xerox Corporation Development system with electrical field generating means
JPS5387734A (en) * 1977-01-13 1978-08-02 Ricoh Co Ltd Electrophotographic magnetic toner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030537A (en) * 1973-02-15 1975-03-26
GB1458766A (en) * 1973-02-15 1976-12-15 Xerox Corp Xerographic developing apparatus
JPS5217417A (en) * 1975-07-31 1977-02-09 Sanyo Chem Ind Ltd Process for removal of compound to cause abnormal polymerization
JPS5359430A (en) * 1976-06-09 1978-05-29 Konishiroku Photo Ind Co Ltd Electrostatic latent image developer
JPS533337A (en) * 1976-06-28 1978-01-13 Eastman Kodak Co Method of developing electrophotographic image by causing dielectric breakdown in developer
JPS533237A (en) * 1976-06-29 1978-01-12 Ricoh Co Ltd One component type developing toner
JPS5387734A (en) * 1977-01-13 1978-08-02 Ricoh Co Ltd Electrophotographic magnetic toner
US4102305A (en) * 1977-07-01 1978-07-25 Xerox Corporation Development system with electrical field generating means

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157483A (en) * 1987-06-22 1992-10-20 Konica Corporation Multicolor image forming method and apparatus
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
US5338894A (en) * 1990-09-21 1994-08-16 Canon Kabushiki Kaisha Image forming method with improved development
US5504272A (en) * 1990-09-21 1996-04-02 Canon Kabushiki Kaisha Magnetic toner having defined particle distribution
US5348829A (en) * 1991-11-08 1994-09-20 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5550619A (en) * 1993-01-13 1996-08-27 Matsushita Electric Industrial Co., Ltd. Electrophotographic apparatus of improved low image density
US8374530B2 (en) 2005-07-25 2013-02-12 Afit Corporation Methods and apparatus for developing an electrostatic latent image using conductive particles
JP2010217605A (en) * 2009-03-17 2010-09-30 Ricoh Co Ltd Developing device, image forming apparatus, and process cartridge

Also Published As

Publication number Publication date
JPS6342256B2 (en) 1988-08-22

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