FR2434414A1 - METHOD FOR DEVELOPING LATENT ELECTROSTATIC IMAGES - Google Patents

METHOD FOR DEVELOPING LATENT ELECTROSTATIC IMAGES

Info

Publication number
FR2434414A1
FR2434414A1 FR7921136A FR7921136A FR2434414A1 FR 2434414 A1 FR2434414 A1 FR 2434414A1 FR 7921136 A FR7921136 A FR 7921136A FR 7921136 A FR7921136 A FR 7921136A FR 2434414 A1 FR2434414 A1 FR 2434414A1
Authority
FR
France
Prior art keywords
developer
omega
latent electrostatic
electrostatic images
developing 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.)
Granted
Application number
FR7921136A
Other languages
French (fr)
Other versions
FR2434414B1 (en
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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
Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of FR2434414A1 publication Critical patent/FR2434414A1/en
Application granted granted Critical
Publication of FR2434414B1 publication Critical patent/FR2434414B1/fr
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
    • G03G15/0914—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with a one-component toner

Landscapes

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

Abstract

La présente invention concerne un procédé de développement d'images électrostatiques latentes. Ce procédé consiste à maintenir magnétiquement une couche d'un révélateur en poudre à un seul composant relativement conducteur présentant une résistivité inférieure à 10**13 OMEGA -cm sur la surface d'un élément de retenue du révélateur et à mettre en contact le révélateur sur la surface de l'élément de retenue du révélateur avec la surface du matériau support d'image, l'élément support d'image présentant une résistance, mesurée par la méthode de mesure de résistance point-plan, de 3 x 10**7 OMEGA à 1 x 10**10 OMEGA dans un environnement maintenu à une température de 20 degrés C et avec une humidité de 50 %. Ce procédé est utilisé pour éliminer les défauts des procédés de copiage électrostatique usuels.The present invention relates to a method for developing latent electrostatic images. This process involves magnetically maintaining a layer of a relatively conductive single component powder developer having a resistivity of less than 10 ** 13 OMEGA -cm on the surface of a developer retainer and contacting the developer. on the surface of the developer retainer with the surface of the imaging material, the imaging member exhibiting a resistance, measured by the point-to-plane resistance measurement method, of 3 x 10 ** 7 OMEGA at 1 x 10 ** 10 OMEGA in an environment maintained at a temperature of 20 degrees C and with a humidity of 50%. This process is used to eliminate the defects of conventional electrostatic copying processes.

FR7921136A 1978-08-22 1979-08-22 METHOD FOR DEVELOPING LATENT ELECTROSTATIC IMAGES Granted FR2434414A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10256878A JPS5529834A (en) 1978-08-22 1978-08-22 Electrophotographic developing apparatus

Publications (2)

Publication Number Publication Date
FR2434414A1 true FR2434414A1 (en) 1980-03-21
FR2434414B1 FR2434414B1 (en) 1984-03-30

Family

ID=14330819

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7921136A Granted FR2434414A1 (en) 1978-08-22 1979-08-22 METHOD FOR DEVELOPING LATENT ELECTROSTATIC IMAGES

Country Status (4)

Country Link
JP (1) JPS5529834A (en)
DE (1) DE2933848C2 (en)
FR (1) FR2434414A1 (en)
GB (1) GB2029279B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377332A (en) * 1979-04-20 1983-03-22 Canon Kabushiki Kaisha Developing device
US4380966A (en) * 1980-10-11 1983-04-26 Canon Kabushiki Kaisha Development apparatus
JPS5766457A (en) * 1980-10-11 1982-04-22 Canon Inc Development device
JPS5766456A (en) * 1980-10-11 1982-04-22 Canon Inc Development device
JPS5877348U (en) * 1981-11-16 1983-05-25 日立金属株式会社 Development device for magnetic toner
US4602863A (en) * 1983-07-01 1986-07-29 Eastman Kodak Company Electrographic development method, apparatus and system
US4473029A (en) * 1983-07-01 1984-09-25 Eastman Kodak Company Electrographic magnetic brush development method, apparatus and system
US4531832A (en) * 1983-08-01 1985-07-30 Eastman Kodak Company Electrographic apparatus, method and system employing image development adjustment
JPH0582597U (en) * 1992-04-16 1993-11-09 三井精機工業株式会社 Template with magnet
GB2350694B (en) * 1996-09-02 2001-05-09 Bridgestone Corp Manufacture of magnetic rollers for use in developing rollers and developing devices

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863603A (en) * 1974-01-07 1975-02-04 Ibm Magnetic brush roll having resilient polymeric surface
US3950089A (en) * 1975-02-24 1976-04-13 Xerox Corporation Coated roll for magnetic brush development and cleaning systems
DE2758726A1 (en) * 1976-12-29 1978-07-13 Minolta Camera Kk DRY DEVELOPMENT PROCESS AND DEVICE FOR CARRYING OUT THE PROCESS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5116926A (en) * 1974-08-01 1976-02-10 Mita Industrial Co Ltd Seidenkasenzono genzohoho

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3863603A (en) * 1974-01-07 1975-02-04 Ibm Magnetic brush roll having resilient polymeric surface
US3950089A (en) * 1975-02-24 1976-04-13 Xerox Corporation Coated roll for magnetic brush development and cleaning systems
DE2758726A1 (en) * 1976-12-29 1978-07-13 Minolta Camera Kk DRY DEVELOPMENT PROCESS AND DEVICE FOR CARRYING OUT THE PROCESS

Also Published As

Publication number Publication date
JPS5529834A (en) 1980-03-03
JPS6360390B2 (en) 1988-11-24
GB2029279B (en) 1982-10-27
DE2933848A1 (en) 1980-03-13
DE2933848C2 (en) 1982-04-08
GB2029279A (en) 1980-03-19
FR2434414B1 (en) 1984-03-30

Similar Documents

Publication Publication Date Title
GB1033420A (en) Electrophotographic and like recording processes
US3667036A (en) Electrometer amplifier circuits
US4739370A (en) Cleaning device
FR2434414A1 (en) METHOD FOR DEVELOPING LATENT ELECTROSTATIC IMAGES
US3897748A (en) Apparatus for controlling toner concentration of developer in electrostatic development
JPS6385658A (en) Developing device
KR910005104A (en) Electrophotographic photosensitive member, its manufacturing method and electrophotographic apparatus
GB1406292A (en) Image developint techniques
US3924462A (en) Method of measuring the toner concentration of a developer circulating in an electrophotographic reproduction machine
US3774574A (en) Development device for electrophotography
JPS6012627B2 (en) electrostatic image development method
JPH0473153B2 (en)
US4167325A (en) Electrographic recording apparatus
US3650616A (en) Mispuff detector
JPS6019504B2 (en) Developer concentration adjustment method and device
US3696784A (en) Xerographic development apparatus
US3671290A (en) Imaging system
JP2862544B2 (en) Development method
US4033293A (en) Developing device of an electrophotographic copying machine
US4244321A (en) Electrographic development electrode
US3640617A (en) Toner doctor means
JPH01142760A (en) Developing device
US5345299A (en) Image-forming machine with toner image transfer means having a charge supply zone and a transfer zone
JPH04212184A (en) Image forming device
JPH0123139Y2 (en)

Legal Events

Date Code Title Description
ST Notification of lapse