DE69028931T2 - Entwicklungsverfahren mit ausgezeichneter Bildwiedergabe - Google Patents
Entwicklungsverfahren mit ausgezeichneter BildwiedergabeInfo
- Publication number
- DE69028931T2 DE69028931T2 DE69028931T DE69028931T DE69028931T2 DE 69028931 T2 DE69028931 T2 DE 69028931T2 DE 69028931 T DE69028931 T DE 69028931T DE 69028931 T DE69028931 T DE 69028931T DE 69028931 T2 DE69028931 T2 DE 69028931T2
- Authority
- DE
- Germany
- Prior art keywords
- development process
- image reproduction
- excellent image
- reproduction
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
- G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
- G03G9/108—Ferrite carrier, e.g. magnetite
- G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10733189 | 1989-04-28 | ||
JP1107330A JPH0727298B2 (ja) | 1989-04-28 | 1989-04-28 | 文字の再現性に優れた現像方法 |
JP13164489 | 1989-05-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69028931D1 DE69028931D1 (de) | 1996-11-21 |
DE69028931T2 true DE69028931T2 (de) | 1997-02-13 |
Family
ID=27310955
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69020238T Expired - Fee Related DE69020238T2 (de) | 1989-04-28 | 1990-04-27 | Entwicklungsverfahren mit ausgezeichneter Bildwiedergabe. |
DE69028931T Expired - Fee Related DE69028931T2 (de) | 1989-04-28 | 1990-04-27 | Entwicklungsverfahren mit ausgezeichneter Bildwiedergabe |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69020238T Expired - Fee Related DE69020238T2 (de) | 1989-04-28 | 1990-04-27 | Entwicklungsverfahren mit ausgezeichneter Bildwiedergabe. |
Country Status (3)
Country | Link |
---|---|
US (1) | US5173388A (de) |
EP (2) | EP0396359B1 (de) |
DE (2) | DE69020238T2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663788A (en) * | 1992-04-02 | 1997-09-02 | Ricoh Company, Ltd. | Efficiently removable developing toner in an electrostatic image forming apparatus |
US5870656A (en) * | 1996-12-04 | 1999-02-09 | Canon Kabushiki Kaisha | Image forming apparatus for effecting development and cleaning by using magnet brush |
JP4012676B2 (ja) * | 2000-09-07 | 2007-11-21 | 株式会社リコー | 現像装置及び画像形成装置 |
JP4084123B2 (ja) * | 2002-08-13 | 2008-04-30 | 株式会社リコー | 現像装置の特性値の規定方法 |
JP2007156334A (ja) * | 2005-12-08 | 2007-06-21 | Ricoh Co Ltd | 現像装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4540645A (en) * | 1983-01-31 | 1985-09-10 | Mita Industrial Co Ltd | Magnetic brush development method |
JPS59172660A (ja) * | 1983-03-23 | 1984-09-29 | Mita Ind Co Ltd | フエライトキヤリヤを用いる磁気ブラシ現像法 |
EP0265942B1 (de) * | 1983-04-12 | 1992-08-26 | Mita Industrial Co. Ltd. | Elektrostatisches Kopiergerät |
US4610531A (en) * | 1983-09-05 | 1986-09-09 | Canon Kabushiki Kaisha | Developing method and apparatus |
JPS6136774A (ja) * | 1984-07-30 | 1986-02-21 | Mita Ind Co Ltd | 現像装置 |
JPS61118767A (ja) * | 1984-11-15 | 1986-06-06 | Konishiroku Photo Ind Co Ltd | 画像形成方法 |
US4672017A (en) * | 1984-11-27 | 1987-06-09 | Mita Industrial Co., Ltd. | Electrophotographic developing method |
US4702987A (en) * | 1985-12-28 | 1987-10-27 | Konishiroku Photo Industry Co., Ltd. | Developing method for electrophotography |
JPS63208867A (ja) * | 1987-02-26 | 1988-08-30 | Minolta Camera Co Ltd | 現像方法 |
US4999272A (en) * | 1988-08-31 | 1991-03-12 | Canon Kabushiki Kaisha | Electrophotographic analog and digital imaging and developing using magnetic toner |
DE68912537T2 (de) * | 1988-11-28 | 1994-05-05 | Mita Industrial Co Ltd | Magnetbürstenentwicklungsverfahren. |
-
1990
- 1990-04-27 EP EP90304639A patent/EP0396359B1/de not_active Expired - Lifetime
- 1990-04-27 US US07/515,711 patent/US5173388A/en not_active Expired - Lifetime
- 1990-04-27 EP EP93119678A patent/EP0589495B1/de not_active Expired - Lifetime
- 1990-04-27 DE DE69020238T patent/DE69020238T2/de not_active Expired - Fee Related
- 1990-04-27 DE DE69028931T patent/DE69028931T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69020238D1 (de) | 1995-07-27 |
EP0589495A3 (de) | 1995-05-10 |
DE69020238T2 (de) | 1995-11-02 |
EP0396359B1 (de) | 1995-06-21 |
EP0589495B1 (de) | 1996-10-16 |
US5173388A (en) | 1992-12-22 |
EP0589495A2 (de) | 1994-03-30 |
EP0396359A3 (de) | 1992-06-17 |
DE69028931D1 (de) | 1996-11-21 |
EP0396359A2 (de) | 1990-11-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |