EP0102038A3 - Developing device and developing method - Google Patents

Developing device and developing method Download PDF

Info

Publication number
EP0102038A3
EP0102038A3 EP83108180A EP83108180A EP0102038A3 EP 0102038 A3 EP0102038 A3 EP 0102038A3 EP 83108180 A EP83108180 A EP 83108180A EP 83108180 A EP83108180 A EP 83108180A EP 0102038 A3 EP0102038 A3 EP 0102038A3
Authority
EP
European Patent Office
Prior art keywords
toner
developing roller
developing
latent image
electrostatic latent
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.)
Withdrawn
Application number
EP83108180A
Other languages
German (de)
French (fr)
Other versions
EP0102038A2 (en
Inventor
Reiji Murakami
Toshiyuki Karaishi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 JP14880582A external-priority patent/JPS5937571A/en
Priority claimed from JP57148807A external-priority patent/JPS5938757A/en
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Publication of EP0102038A2 publication Critical patent/EP0102038A2/en
Publication of EP0102038A3 publication Critical patent/EP0102038A3/en
Withdrawn legal-status Critical Current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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer
    • G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush

Landscapes

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

Abstract

A developing device (18) develops an electrostatic latent image formed on a photosensitive layer of a photosensitive drum (14) by a toner (40) and is provided with a developing roller (36) which rotatably faces the photosensitive layer and is adopted to rotate with the toner (40) thereon forming a toner layer (42), such that the toner (40) is transferred to the photosensitive layer to develop the electrostatic latent image, and a doctor blade (41) which is spaced from the developing roller (36), for regulating the thickness of the toner layer (42) formed on the developing roller (36). The toner (40) consists of an electrically insulating toner whose surface potential (Vt) on the developing roller (36) has polarity opposite to that of changes on the electrostatic latent image and absolute value greater than 20 (volts) and smaller than 90 (volts).
EP83108180A 1982-08-27 1983-08-18 Developing device and developing method Withdrawn EP0102038A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP148805/82 1982-08-27
JP14880582A JPS5937571A (en) 1982-08-27 1982-08-27 Developing device
JP148807/82 1982-08-27
JP57148807A JPS5938757A (en) 1982-08-27 1982-08-27 Method and device for developing

Publications (2)

Publication Number Publication Date
EP0102038A2 EP0102038A2 (en) 1984-03-07
EP0102038A3 true EP0102038A3 (en) 1984-05-16

Family

ID=26478880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108180A Withdrawn EP0102038A3 (en) 1982-08-27 1983-08-18 Developing device and developing method

Country Status (1)

Country Link
EP (1) EP0102038A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647186A (en) * 1985-11-04 1987-03-03 Eastman Kodak Company Biased scavenging grid for electrographic apparatus
JP2574418B2 (en) * 1988-09-27 1997-01-22 三田工業株式会社 Development method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2854825A1 (en) * 1977-12-22 1979-06-28 Canon Kk Development of electrostatic latent image - uses toner contg. organic semiconductor on insulating support giving charge injection
DE2739703B2 (en) * 1977-09-02 1979-08-16 Konishiroku Photo Industry Co., Ltd., Tokio Process for developing and transferring latent charge images onto ordinary, untreated paper
GB2064482A (en) * 1979-12-06 1981-06-17 Pitney Bowes Inc Developer powder dispensing apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018067B2 (en) * 1977-03-23 1985-05-08 キヤノン株式会社 Developing method and developer for electrostatic latent images
JPS54136339A (en) * 1978-04-14 1979-10-23 Toshiba Corp Developing apparatus
JPS5511201A (en) * 1978-05-10 1980-01-26 Mita Ind Co Ltd Electrophotographic developing device
JPS54161944A (en) * 1978-06-12 1979-12-22 Konishiroku Photo Ind Co Ltd Magnetic brush developing device of electrophotography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739703B2 (en) * 1977-09-02 1979-08-16 Konishiroku Photo Industry Co., Ltd., Tokio Process for developing and transferring latent charge images onto ordinary, untreated paper
DE2854825A1 (en) * 1977-12-22 1979-06-28 Canon Kk Development of electrostatic latent image - uses toner contg. organic semiconductor on insulating support giving charge injection
GB2064482A (en) * 1979-12-06 1981-06-17 Pitney Bowes Inc Developer powder dispensing apparatus

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Patent Abstracts of Japan vol. 2, no. 149, 13 December 1978 page 9488E78 & JP-A-53 117431 *
Patent Abstracts of Japan vol. 3, no. 155, 19 December 1979 page 149E160 & JP-A-54 136339 *
Patent Abstracts of Japan vol. 4, no. 24, 29 February 1980 page 46E173 & JP-A-54 161944 *
Patent Abstracts of Japan vol. 4, no. 39, 28 March 1980 page 64P4 & JP-A-55 011201 *

Also Published As

Publication number Publication date
EP0102038A2 (en) 1984-03-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19830915

AK Designated contracting states

Designated state(s): DE FR GB

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): DE FR GB

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KABUSHIKI KAISHA TOSHIBA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870525

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MURAKAMI, REIJI

Inventor name: KARAISHI, TOSHIYUKI