GB1458766A - Xerographic developing apparatus - Google Patents

Xerographic developing apparatus

Info

Publication number
GB1458766A
GB1458766A GB651274A GB651274A GB1458766A GB 1458766 A GB1458766 A GB 1458766A GB 651274 A GB651274 A GB 651274A GB 651274 A GB651274 A GB 651274A GB 1458766 A GB1458766 A GB 1458766A
Authority
GB
United Kingdom
Prior art keywords
segment
electroscopic
particles
donor member
microseconds
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.)
Expired
Application number
GB651274A
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 claimed from US432251A external-priority patent/US3866574A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of GB1458766A publication Critical patent/GB1458766A/en
Expired 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
    • G03G15/065—Arrangements for controlling the potential of the developing electrode

Landscapes

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

Abstract

1458766 Developing apparatus XEROX CORP 13 Feb 1974 [15 Feb 1973 (2) 10 Jan 1974] 6512/74 Heading G2H In an apparatus of the kind in which a donor member carrying a uniform layer of electroscopic developing particles is spaced by a small gap from a latent electrostatic image bearing member to be developed, a pulsed bias of substantially rectangular wave form is applied across said gap, each pulse comprising an activation potential segment in which the electroscopic particles are released from the donor member and a development potential segment of different polarity or zero potential in which the electroscopic particles in non-image areas are attracted towards the donor member thereby preventing particle deposition in the non-image areas. Suitably each activation segment lasts for 30 to 70 microseconds and each development segment lasts for 100 to 180 microseconds, and the pulse repetition rate is from 4 to 8 kilo-Hertz.
GB651274A 1973-02-15 1974-02-13 Xerographic developing apparatus Expired GB1458766A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US33285273A 1973-02-15 1973-02-15
US33285173A 1973-02-15 1973-02-15
US432251A US3866574A (en) 1973-02-15 1974-01-10 Xerographic developing apparatus

Publications (1)

Publication Number Publication Date
GB1458766A true GB1458766A (en) 1976-12-15

Family

ID=27406882

Family Applications (1)

Application Number Title Priority Date Filing Date
GB651274A Expired GB1458766A (en) 1973-02-15 1974-02-13 Xerographic developing apparatus

Country Status (4)

Country Link
DE (1) DE2407380C3 (en)
FR (1) FR2217738B1 (en)
GB (1) GB1458766A (en)
NL (1) NL7402157A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518657A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS55105268A (en) * 1979-02-06 1980-08-12 Canon Inc Developing method
JPS55118052A (en) * 1979-03-06 1980-09-10 Canon Inc Developing method
JPS55118049A (en) * 1979-03-07 1980-09-10 Canon Inc Developing method
JPS55118051A (en) * 1979-03-06 1980-09-10 Canon Inc Method and apparatus for developing
JPS55120045A (en) * 1979-03-08 1980-09-16 Canon Inc Method and device for development
JPS55133059A (en) * 1979-04-04 1980-10-16 Canon Inc Electrophotographic developing method
JPS5614266A (en) * 1979-07-16 1981-02-12 Canon Inc Toner image forming method
JPS5640862A (en) * 1979-09-11 1981-04-17 Canon Inc Developing device
JPS5691265A (en) * 1979-12-26 1981-07-24 Canon Inc Printer
JPS56110964A (en) * 1980-02-06 1981-09-02 Toshiba Corp Developing device
JPS56113172A (en) * 1980-02-12 1981-09-05 Canon Inc Development device
JPS56122045A (en) * 1980-03-01 1981-09-25 Copyer Co Ltd Method and device for development of electrostatic latent image
JPS5764759A (en) * 1980-10-09 1982-04-20 Toshiba Corp Developing device
GB2141643A (en) * 1983-03-31 1985-01-03 Konishiroku Photo Ind Developing electrostatic latent images
GB2145942A (en) * 1983-08-05 1985-04-11 Konishiroku Photo Ind Developing latent eletrostatic images
US4529293A (en) * 1982-03-02 1985-07-16 Oce-Nederland B.V. Electrophotographic copying process and machine
JPS62968A (en) * 1986-05-16 1987-01-06 Canon Inc Method and apparatus for developing
US4836135A (en) * 1986-08-11 1989-06-06 Kabushiki Kaisha Toshiba Developing apparatus having one-component developing agent
GB2213167A (en) * 1987-12-04 1989-08-09 Nat Res Dev Deposition of materials on to substrates
JPH0614223B2 (en) 1990-04-05 1994-02-23 キヤノン株式会社 Development device
US7907856B2 (en) 2005-10-13 2011-03-15 Ricoh Company, Ltd. Development apparatus and image forming apparatus using toner carrier with a plurality of electrodes

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL179517C (en) * 1974-11-18 1986-09-16 Oce Van Der Grinten N V P A Oc Apparatus for the electrostatic transfer of a powder image from a carrier to a receiving material.
CA1066042A (en) * 1975-02-03 1979-11-13 Xerox Corporation Microfield donors with toner agitation and the methods for their manufacture
CA1138723A (en) * 1978-07-28 1983-01-04 Tsutomu Toyono Developing method for developer transfer under electrical bias and apparatus therefor
JPS56101169A (en) * 1980-01-14 1981-08-13 Canon Inc Electrophotographic developing method
CA1142804A (en) * 1978-07-28 1983-03-15 Junichiro Kanbe Developing method for developer transfer under electrical bias and apparatus therefor
JPS55118048A (en) * 1979-03-05 1980-09-10 Canon Inc Method and apparatus for developing
US4363861A (en) * 1979-03-06 1982-12-14 Canon Kabushiki Kaisha Toner transfer development using alternating electric field
DE3008913A1 (en) * 1979-03-08 1980-09-18 Canon Kk High resolution toner developer unit for photocopier - uses toner bristles of limited thickness and HF field to transfer toner
DE3107055A1 (en) * 1980-03-04 1982-01-07 Canon K.K., Tokyo "DEVELOPMENT DEVICE"
DE3153406C3 (en) * 1980-12-05 1995-03-23 Ricoh Kk Development facility for an electrophotographic copier
US4445771A (en) 1980-12-05 1984-05-01 Ricoh Company, Ltd. Developing apparatus for electrostatic photography
US4450220A (en) * 1981-02-25 1984-05-22 Konishiroku Photo Industry Co., Ltd. Method of charging electrostatic developer
JPS5821771A (en) * 1981-08-01 1983-02-08 Konishiroku Photo Ind Co Ltd Developing device for electrostatic latent image
US4610531A (en) * 1983-09-05 1986-09-09 Canon Kabushiki Kaisha Developing method and apparatus
JPS60229035A (en) * 1984-04-27 1985-11-14 Canon Inc Developing method
JPS61223769A (en) * 1985-03-28 1986-10-04 Fuji Xerox Co Ltd One component developing device
DE19546248A1 (en) * 1995-12-12 1997-06-19 Heidelberger Druckmasch Ag Electrostatic latent image development on movable intermediate carrier
DE19547546A1 (en) * 1995-12-20 1997-07-03 Heidelberger Druckmasch Ag Device for acting on sheets in a sheet delivery

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3346475A (en) * 1963-02-25 1967-10-10 Australia Res Lab Electrophotographic method using an unsymmetrical ac current during development

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518656A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS5518657A (en) * 1978-07-28 1980-02-08 Canon Inc Electrophotographic developing method
JPS5832375B2 (en) * 1978-07-28 1983-07-12 キヤノン株式会社 Development method
JPS6342256B2 (en) * 1978-07-28 1988-08-22 Canon Kk
JPS55105268A (en) * 1979-02-06 1980-08-12 Canon Inc Developing method
JPH0136102B2 (en) * 1979-03-06 1989-07-28 Canon Kk
JPS55118052A (en) * 1979-03-06 1980-09-10 Canon Inc Developing method
JPH0152747B2 (en) * 1979-03-06 1989-11-09 Canon Kk
JPS55118051A (en) * 1979-03-06 1980-09-10 Canon Inc Method and apparatus for developing
JPS55118049A (en) * 1979-03-07 1980-09-10 Canon Inc Developing method
JPS6342783B2 (en) * 1979-03-07 1988-08-25 Canon Kk
JPS55120045A (en) * 1979-03-08 1980-09-16 Canon Inc Method and device for development
JPS55133059A (en) * 1979-04-04 1980-10-16 Canon Inc Electrophotographic developing method
JPS6330622B2 (en) * 1979-04-04 1988-06-20 Canon Kk
JPS5614266A (en) * 1979-07-16 1981-02-12 Canon Inc Toner image forming method
JPS5640862A (en) * 1979-09-11 1981-04-17 Canon Inc Developing device
JPS5691265A (en) * 1979-12-26 1981-07-24 Canon Inc Printer
JPS56110964A (en) * 1980-02-06 1981-09-02 Toshiba Corp Developing device
JPH0321906B2 (en) * 1980-02-06 1991-03-25 Tokyo Shibaura Electric Co
JPS56113172A (en) * 1980-02-12 1981-09-05 Canon Inc Development device
JPS56122045A (en) * 1980-03-01 1981-09-25 Copyer Co Ltd Method and device for development of electrostatic latent image
JPH033228B2 (en) * 1980-10-09 1991-01-18 Tokyo Shibaura Electric Co
JPS5764759A (en) * 1980-10-09 1982-04-20 Toshiba Corp Developing device
US4529293A (en) * 1982-03-02 1985-07-16 Oce-Nederland B.V. Electrophotographic copying process and machine
GB2141643A (en) * 1983-03-31 1985-01-03 Konishiroku Photo Ind Developing electrostatic latent images
GB2145942A (en) * 1983-08-05 1985-04-11 Konishiroku Photo Ind Developing latent eletrostatic images
JPS63788B2 (en) * 1986-05-16 1988-01-08 Canon Kk
JPS62968A (en) * 1986-05-16 1987-01-06 Canon Inc Method and apparatus for developing
US4836135A (en) * 1986-08-11 1989-06-06 Kabushiki Kaisha Toshiba Developing apparatus having one-component developing agent
GB2213167A (en) * 1987-12-04 1989-08-09 Nat Res Dev Deposition of materials on to substrates
JPH0614223B2 (en) 1990-04-05 1994-02-23 キヤノン株式会社 Development device
US7907856B2 (en) 2005-10-13 2011-03-15 Ricoh Company, Ltd. Development apparatus and image forming apparatus using toner carrier with a plurality of electrodes

Also Published As

Publication number Publication date
DE2407380B2 (en) 1978-03-23
FR2217738A1 (en) 1974-09-06
FR2217738B1 (en) 1977-03-04
DE2407380C3 (en) 1978-11-23
NL7402157A (en) 1974-08-19
DE2407380A1 (en) 1974-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee