EP0065305A3 - Magnetic-brush developing device for electrostatic latent images - Google Patents
Magnetic-brush developing device for electrostatic latent imagesInfo
- Publication number
- EP0065305A3 EP0065305A3 EP82104312A EP82104312A EP0065305A3 EP 0065305 A3 EP0065305 A3 EP 0065305A3 EP 82104312 A EP82104312 A EP 82104312A EP 82104312 A EP82104312 A EP 82104312A EP 0065305 A3 EP0065305 A3 EP 0065305A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- transport
- magnetic
- pollinia
- along
- 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- Withdrawn
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)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
Magnetbürstenentwicklungsvorrichtung zum Entwik keln elektrostatischer Ladungsbilder, mit einer Foto trommel und mit mehreren, entlang eines Umfangsab schnittes derselben hintereinander und achsparallel zu der Fototrommel angeordneten, in gemeinsamer Dreh richtung angetriebenen Entwicklungsmaterial-Transport zylindern (41, 43) aus unmagnetischem Material, auf de ren Zylinderoberfläche Entwicklungsmaterial transportiert wird und in denen jeweils eine feststehende Magnet einrichtung (2) angeordnet ist, die entlang mehrerer Pollinien (34, 35, 36 bzw. 37, 38, 39), die parallel zu der Achse des sie enthaltenden Transportzylinders (41) in dessen Umfangsrichtung gegeneinander versetzt verlau fen, permanent ungleichnamig magnetisiert sind, und mit einer das Entwicklungsmaterial enthaltenden Wanne, in die der in Entwicklertransportrichtung gesehen erste Transportzylinder (41) eintaucht. Die Magneteinrichtun gen (2) einander jeweils benachbarter Transportzylinder (41, 43) sind entlang ersten Pollinien (36, 39, 40) an ihrer der Fototrommel zugewendeten Seite ungleichnamig ma gnetisiert, wobei die Magneteinrichtungen des in Ent wicklertransportrichtung gesehen ersten Transportzylin ders (41) und letzten Transportzylinders (43) jeweils ent lang dreier, in deren Umfangsrichtung um 120° gegen einander versetzter Pollinien (34, 35, 36 bzw. 37, 38, 39), und zwar jeweils entlang ihrer ersten Pollinie (36, 39) entgegengesetzt zu ihrer Magnetisierung an ihren bei den anderen Pollinien (34, 35; 37, 38) magnetisiert sind. Ausserdem ist an den in Entwicklertransportrichtung gesehen letzten Transportzylinder (43) ein Abstreifmes ser (7) angeordnet, durch welches das auf der Zylinder oberfläche haftende Entwicklungsmaterial in gleichmäs siger Stärke verteilt wird. Die Entwicklungsvorrichtung kann zum Entwickeln elektrostatischer Ladungsbilder z.B. in der Xerographie oder bei Laserschreibverfahren verwendet werden. Magnetic brush developing device for development electrostatic charge images, with a photo drum and with several, along a circumference cut the same one behind the other and axially parallel the photo drum arranged, in common rotation direction driven development material transport cylinders (41, 43) made of non-magnetic material, on de Development material transported on the cylinder surface will and in each of which a fixed magnet device (2) is arranged along several Pollinia (34, 35, 36 and 37, 38, 39) parallel to the Axis of the transport cylinder (41) containing them in its circumferential direction offset against each other are permanently magnetized with the same name, and with a tub containing the development material, in the first seen in the developer transport direction Immersed transport cylinder (41). The magnetic device gene (2) each adjacent transport cylinder (41, 43) are along their first pollinia (36, 39, 40) side facing the photo drum ma gnetized, the magnetic devices of the Ent winder transport direction seen first Transportzylin ders (41) and last transport cylinder (43) each ent long three, in the circumferential direction by 120 ° against staggered pollinia (34, 35, 36 and 37, 38, 39), each along its first pole line (36, 39) contrary to their magnetization at their the other pollinia (34, 35; 37, 38) are magnetized. In addition, is in the developer transport direction seen last transport cylinder (43) a stripping knife ser (7) arranged through which on the cylinder Developmental material adhering to the surface in uniform strength is distributed. The developing device can be used to develop electrostatic charge images e.g. in xerography or in laser writing processes be used.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU139581 | 1981-05-18 | ||
HU139581A HU181333B (en) | 1981-05-18 | 1981-05-18 | Developing-wiping construction of magnetic brush, in particular to electro-photographic duplicator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0065305A2 EP0065305A2 (en) | 1982-11-24 |
EP0065305A3 true EP0065305A3 (en) | 1983-08-03 |
Family
ID=10954272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82104312A Withdrawn EP0065305A3 (en) | 1981-05-18 | 1982-05-17 | Magnetic-brush developing device for electrostatic latent images |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0065305A3 (en) |
DD (1) | DD209032A5 (en) |
HU (1) | HU181333B (en) |
PL (1) | PL128934B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008256830A (en) * | 2007-04-03 | 2008-10-23 | Fuji Xerox Co Ltd | Developing body, developing device, and image forming apparatus |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823688A (en) * | 1972-01-26 | 1974-07-16 | Xerox Corp | Magnetic brush assembly |
DE2452879A1 (en) * | 1974-11-07 | 1976-05-20 | Hitachi Metals Ltd | Electrostatic developing appts using magnetic brush - includes non-magnetic cylinder rotated around stationary permanent magnet having developing poles |
US4068623A (en) * | 1976-07-30 | 1978-01-17 | Addressograph-Multigraph Corporation | Magnetic feed system for developer mix |
DE2800510A1 (en) * | 1977-01-07 | 1978-07-13 | Canon Kk | MAGNETIC BRUSH DEVELOPMENT DEVICE FOR THE DEVELOPMENT OF ELECTROSTATIC CHARGE PICTURES |
DE2850997A1 (en) * | 1977-11-25 | 1979-05-31 | Ricoh Kk | ELECTROSTATOGRAPHIC DEVICE |
US4260239A (en) * | 1978-05-08 | 1981-04-07 | Repro S.V. | Brush type toner deposition device |
-
1981
- 1981-05-18 HU HU139581A patent/HU181333B/en unknown
-
1982
- 1982-05-15 PL PL23644482A patent/PL128934B1/en unknown
- 1982-05-17 EP EP82104312A patent/EP0065305A3/en not_active Withdrawn
- 1982-05-18 DD DD23995482A patent/DD209032A5/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3823688A (en) * | 1972-01-26 | 1974-07-16 | Xerox Corp | Magnetic brush assembly |
DE2452879A1 (en) * | 1974-11-07 | 1976-05-20 | Hitachi Metals Ltd | Electrostatic developing appts using magnetic brush - includes non-magnetic cylinder rotated around stationary permanent magnet having developing poles |
US4068623A (en) * | 1976-07-30 | 1978-01-17 | Addressograph-Multigraph Corporation | Magnetic feed system for developer mix |
DE2800510A1 (en) * | 1977-01-07 | 1978-07-13 | Canon Kk | MAGNETIC BRUSH DEVELOPMENT DEVICE FOR THE DEVELOPMENT OF ELECTROSTATIC CHARGE PICTURES |
DE2850997A1 (en) * | 1977-11-25 | 1979-05-31 | Ricoh Kk | ELECTROSTATOGRAPHIC DEVICE |
US4260239A (en) * | 1978-05-08 | 1981-04-07 | Repro S.V. | Brush type toner deposition device |
Non-Patent Citations (1)
Title |
---|
XEROX DISCLOSURE JOURNAL, Band 3, Nr. 6, November/Dezember 1978, Seiten 405,406 * |
Also Published As
Publication number | Publication date |
---|---|
EP0065305A2 (en) | 1982-11-24 |
PL128934B1 (en) | 1984-03-31 |
DD209032A5 (en) | 1984-04-18 |
HU181333B (en) | 1983-07-28 |
PL236444A1 (en) | 1982-11-22 |
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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 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT NL SE |
|
ITCL | It: translation for ep claims filed |
Representative=s name: CALVANI SALVI VERONELLI |
|
TCNL | Nl: translation of patent claims filed | ||
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
17P | Request for examination filed |
Effective date: 19830420 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19850415 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: JASZTER, JOSZEF Inventor name: BERECK, GABOR Inventor name: TOTH, KAROLY Inventor name: SZEKELY, LAJOS Inventor name: BERNATH, LASZLO, DIPL.-MASCH.-ING. Inventor name: NEUMANN, GYOERGY, DIPL.-MASCH.-ING. Inventor name: KISS, JOSZEF Inventor name: SZILVESZTER, LAJOS |