ATE235T1 - MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC CHARGE IMAGES. - Google Patents

MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC CHARGE IMAGES.

Info

Publication number
ATE235T1
ATE235T1 AT79102655T AT79102655T ATE235T1 AT E235 T1 ATE235 T1 AT E235T1 AT 79102655 T AT79102655 T AT 79102655T AT 79102655 T AT79102655 T AT 79102655T AT E235 T1 ATE235 T1 AT E235T1
Authority
AT
Austria
Prior art keywords
magnetic brush
drum
magnetic
roller
brush roller
Prior art date
Application number
AT79102655T
Other languages
German (de)
Inventor
Hartmut Dr. Bock
Original Assignee
Hoechst Aktiengesellschaft
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 Hoechst Aktiengesellschaft filed Critical Hoechst Aktiengesellschaft
Application granted granted Critical
Publication of ATE235T1 publication Critical patent/ATE235T1/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

Disclosed is a magnetic brush device for use in a photocopy machine for applying a developer comprised of a toner and magnetic carrier particles to electrostatic charge images on a photoconductive recording medium on a rotating drum, comprising a magnetic brush roller rotatably mounted axially parallel and in spaced relationship to the drum; a doctor blade positioned adjacent the magnetic brush roller for metering the quantity of developer carried by the roller, this doctor blade converging to a point substantially adjacent the surface of the magnetic brush roller in the regions near both ends of the roller, to define a transition zone at each end thereof; and two elastic wiper members comprised of non-magnetic material mounted to bear against the drum, one in each of the transition zones, for wiping the magnetic carrier particles from the drum and for limiting the width of the developer applied by the magnetic brush roller to the drum.
AT79102655T 1978-08-04 1979-07-26 MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC CHARGE IMAGES. ATE235T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782834264 DE2834264A1 (en) 1978-08-04 1978-08-04 MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC LOADING IMAGES
EP79102655A EP0008040B1 (en) 1978-08-04 1979-07-26 Magnetic brush development apparatus for electrostatic charge images

Publications (1)

Publication Number Publication Date
ATE235T1 true ATE235T1 (en) 1981-10-15

Family

ID=6046251

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79102655T ATE235T1 (en) 1978-08-04 1979-07-26 MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC CHARGE IMAGES.

Country Status (6)

Country Link
US (1) US4261289A (en)
EP (1) EP0008040B1 (en)
JP (1) JPS5522792A (en)
AT (1) ATE235T1 (en)
CA (1) CA1132341A (en)
DE (2) DE2834264A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5648876B2 (en) * 1973-06-13 1981-11-18
JPH07107617B2 (en) * 1985-04-18 1995-11-15 富士ゼロックス株式会社 Electronic copier developing device
JPH0648404B2 (en) * 1986-06-12 1994-06-22 コニカ株式会社 Development device
JPH11272107A (en) * 1998-03-19 1999-10-08 Canon Inc Coating amount regulating body, fixing device and image forming apparatus provided with this coating amount regulating body
EP1623281A2 (en) * 2003-03-27 2006-02-08 Eastman Kodak Company Method and system for wide format toning
NZ718260A (en) 2013-10-23 2019-05-31 Prysmian Spa Energy cable having a crosslinked electrically insulating layer, and method for extracting crosslinking by-products therefrom
US9991690B2 (en) 2015-01-21 2018-06-05 Prysmian S.P.A. Accessory for high voltage direct current energy cables
NZ735670A (en) 2015-04-22 2020-03-27 Prysmian Spa Energy cable having a crosslinked electrically insulating system, and method for extracting crosslinking by-products therefrom

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081737A (en) * 1961-03-01 1963-03-19 Gen Aniline & Film Corp Xerographic apparatus for applying ferromagnetic powder
US3866575A (en) * 1971-09-06 1975-02-18 Canon Kk Magnet roll developing device
US3884571A (en) * 1972-05-05 1975-05-20 Adalbert A Lux Leakage developer recirculation assembly
US4040387A (en) * 1972-09-24 1977-08-09 Mita Industrial Co. Ltd. Electrostatic photographic copying apparatus
US3918808A (en) * 1972-12-21 1975-11-11 Ricoh Kk Photoreceptor cleaning device for electrophotographic copying apparatus of the dry cleaning agent type
US3982498A (en) * 1973-11-19 1976-09-28 Xerox Corporation Development apparatus
US3999514A (en) * 1975-09-29 1976-12-28 International Business Machines Corporation Magnetic brush developer
JPS6044653B2 (en) * 1976-05-17 1985-10-04 株式会社リコー Developing bias automatic control method and device

Also Published As

Publication number Publication date
DE2960834D1 (en) 1981-12-03
EP0008040B1 (en) 1981-09-16
JPS5522792A (en) 1980-02-18
US4261289A (en) 1981-04-14
EP0008040A1 (en) 1980-02-20
CA1132341A (en) 1982-09-28
JPH0124308B2 (en) 1989-05-11
DE2834264A1 (en) 1980-02-21

Similar Documents

Publication Publication Date Title
ATE235T1 (en) MAGNETIC BRUSH DEVELOPMENT DEVICE FOR ELECTROSTATIC CHARGE IMAGES.
US4777904A (en) Touchdown development apparatus
JPH0652452B2 (en) Electrophotographic copying machine
US4165172A (en) Drum cleaning system for electrophotographic apparatus
US5187529A (en) Device for collecting a toner carrier in an image developing apparatus
JPS6152663A (en) developing device
US4025185A (en) Applicator member
JPS6347873Y2 (en)
JPS63106768A (en) dry developing device
JPS6343476Y2 (en)
JPH0643818Y2 (en) Development device
JP3049044B1 (en) Image forming device
JPS63106766A (en) Developing device
JPS6326386B2 (en)
JPS627068A (en) Developing device
CA1084697A (en) Toner applicator for electrostatic copier
JPS6313059A (en) Developing method
JPS626231B2 (en)
JPS5854390B2 (en) Kankoutai cleaning method
JPS58143366A (en) Cleaning device
JP2004184815A (en) Image forming device
JPH0378629B2 (en)
JPS6224293Y2 (en)
JPS648328B2 (en)
JPS59121370A (en) Cleaning method

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee