EP0272611A3 - Magnetic brush development apparatus having a gating and metering mechanism - Google Patents

Magnetic brush development apparatus having a gating and metering mechanism Download PDF

Info

Publication number
EP0272611A3
EP0272611A3 EP87118689A EP87118689A EP0272611A3 EP 0272611 A3 EP0272611 A3 EP 0272611A3 EP 87118689 A EP87118689 A EP 87118689A EP 87118689 A EP87118689 A EP 87118689A EP 0272611 A3 EP0272611 A3 EP 0272611A3
Authority
EP
European Patent Office
Prior art keywords
gating
magnetic brush
development apparatus
metering mechanism
brush development
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
EP87118689A
Other versions
EP0272611B1 (en
EP0272611A2 (en
Inventor
Frank C/O Eastman Kodak Company Hacknauer
Salvatore Castrenze Eastman Kodak Company Defazio
Richard Samuel C/O Eastman Kodak Company Fox
Kenneth D. C/O Eastman Kodak Company Adkins
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 US06/944,895 external-priority patent/US4690096A/en
Priority claimed from US07/070,275 external-priority patent/US4748471A/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0272611A2 publication Critical patent/EP0272611A2/en
Publication of EP0272611A3 publication Critical patent/EP0272611A3/en
Application granted granted Critical
Publication of EP0272611B1 publication Critical patent/EP0272611B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • 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)
EP87118689A 1986-12-22 1987-12-16 Magnetic brush development apparatus having a gating and metering mechanism Expired - Lifetime EP0272611B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US944895 1978-09-22
US06/944,895 US4690096A (en) 1986-12-22 1986-12-22 Magnetic brush development apparatus having a gating and metering mechanism
US70275 1987-07-06
US07/070,275 US4748471A (en) 1987-07-06 1987-07-06 Development apparatus having means for rapidly shutting off the flow of developer to a magnetic brush

Publications (3)

Publication Number Publication Date
EP0272611A2 EP0272611A2 (en) 1988-06-29
EP0272611A3 true EP0272611A3 (en) 1989-06-14
EP0272611B1 EP0272611B1 (en) 1992-08-19

Family

ID=26750980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118689A Expired - Lifetime EP0272611B1 (en) 1986-12-22 1987-12-16 Magnetic brush development apparatus having a gating and metering mechanism

Country Status (3)

Country Link
EP (1) EP0272611B1 (en)
JP (1) JPH0614227B2 (en)
DE (1) DE3781258T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4914481A (en) * 1987-07-09 1990-04-03 Sharp Kabushiki Kaisha Developing apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3031593A1 (en) * 1979-08-21 1981-03-19 Ricoh Co., Ltd., Tokyo DEVELOPMENT DEVICE WITH MAGNETIC BRUSH FOR AN ELECTROPHOTOGRAPHIC COPIER
EP0160830A1 (en) * 1984-04-06 1985-11-13 EASTMAN KODAK COMPANY (a New Jersey corporation) Electrographic development apparatus having a mixing device with a ribbon blender
US4671207A (en) * 1985-12-11 1987-06-09 Eastman Kodak Company Magnetic brush development apparatus
US4716437A (en) * 1986-11-19 1987-12-29 Eastman Kodak Company Development station having apertured thin film for controlling the flow of developer material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020751B2 (en) * 1977-04-25 1985-05-23 株式会社リコー magnetic brush developing device
JPS5555370A (en) * 1978-10-20 1980-04-23 Ricoh Co Ltd Magnetic brush developing unit
JPS5811766U (en) * 1981-07-15 1983-01-25 株式会社日立製作所 developing device
JPS60136777A (en) * 1983-12-26 1985-07-20 Ricoh Co Ltd Developing device of copying machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3031593A1 (en) * 1979-08-21 1981-03-19 Ricoh Co., Ltd., Tokyo DEVELOPMENT DEVICE WITH MAGNETIC BRUSH FOR AN ELECTROPHOTOGRAPHIC COPIER
EP0160830A1 (en) * 1984-04-06 1985-11-13 EASTMAN KODAK COMPANY (a New Jersey corporation) Electrographic development apparatus having a mixing device with a ribbon blender
US4671207A (en) * 1985-12-11 1987-06-09 Eastman Kodak Company Magnetic brush development apparatus
US4716437A (en) * 1986-11-19 1987-12-29 Eastman Kodak Company Development station having apertured thin film for controlling the flow of developer material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Also Published As

Publication number Publication date
JPS63167388A (en) 1988-07-11
EP0272611B1 (en) 1992-08-19
DE3781258D1 (en) 1992-09-24
DE3781258T2 (en) 1993-03-25
JPH0614227B2 (en) 1994-02-23
EP0272611A2 (en) 1988-06-29

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