JPS63107457U - - Google Patents
Info
- Publication number
- JPS63107457U JPS63107457U JP1986200966U JP20096686U JPS63107457U JP S63107457 U JPS63107457 U JP S63107457U JP 1986200966 U JP1986200966 U JP 1986200966U JP 20096686 U JP20096686 U JP 20096686U JP S63107457 U JPS63107457 U JP S63107457U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- latent image
- holding member
- vicinity
- image carrier
- 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
Links
- 239000006247 magnetic powder Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 5
- 108091008695 photoreceptors Proteins 0.000 description 1
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
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
- G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals
-
- 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
- G03G15/0942—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with means for preventing toner scattering from the magnetic brush, e.g. magnetic seals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0047—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0005—Cleaning of residual toner
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
- Dry Development In Electrophotography (AREA)
Description
第1図は本考案一実施例の乾式現像装置の斜視
図、第2図は現像ハウジング、上カバー、シール
部材等の取付け態様を示す斜視図、第3図は上記
乾式現像装置の要部断面図、第4図は同上現像装
置の要部構成図、第5図はシート部材を長方形状
にした場合の不具合を説明するための図、第6図
は本考案装置に具備されるシート部材の有効機能
を説明するための図、第7図は従来例の断面を示
す図である。 1…磁性粉体保持部材としての現像スリーブ、
3…ハウジング、4…潜像担持体としての感光体
、8…シート部材、8A…脚状延伸部。
図、第2図は現像ハウジング、上カバー、シール
部材等の取付け態様を示す斜視図、第3図は上記
乾式現像装置の要部断面図、第4図は同上現像装
置の要部構成図、第5図はシート部材を長方形状
にした場合の不具合を説明するための図、第6図
は本考案装置に具備されるシート部材の有効機能
を説明するための図、第7図は従来例の断面を示
す図である。 1…磁性粉体保持部材としての現像スリーブ、
3…ハウジング、4…潜像担持体としての感光体
、8…シート部材、8A…脚状延伸部。
Claims (1)
- 静電潜像を形成する潜像担持体と、該潜像担持
体に近接し磁性粉体を担持する磁性粉体保持部材
と、前記磁性粉体を収容し、かつ、磁性粉体保持
部材を設けるハウジングと、該ハウジングから潜
像担持体と磁性粉体保持部材との近接部近傍まで
延びるシート部材とを有し、磁性粉体保持部材軸
方向上のシート部材両端側に、磁性粉体保持部材
の両端側のハウジング部分から、磁性粉体保持部
材上の磁性粉体担持領域の両端よりも内側の、そ
の両端近傍部分までを被う脚状延伸部を設けたこ
とを特徴とする磁性粉体保持系装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986200966U JPH0755564Y2 (ja) | 1986-12-29 | 1986-12-29 | 磁性粉体保持装置 |
US07/139,317 US4897693A (en) | 1986-12-29 | 1987-12-29 | Magnetic particle carrying apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986200966U JPH0755564Y2 (ja) | 1986-12-29 | 1986-12-29 | 磁性粉体保持装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63107457U true JPS63107457U (ja) | 1988-07-11 |
JPH0755564Y2 JPH0755564Y2 (ja) | 1995-12-20 |
Family
ID=16433279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986200966U Expired - Lifetime JPH0755564Y2 (ja) | 1986-12-29 | 1986-12-29 | 磁性粉体保持装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US4897693A (ja) |
JP (1) | JPH0755564Y2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012103588A (ja) * | 2010-11-12 | 2012-05-31 | Murata Mach Ltd | 感光体のクリーニング装置 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0715227B1 (en) * | 1989-03-31 | 1999-12-01 | Canon Kabushiki Kaisha | A developing apparatus |
US5293199A (en) * | 1990-05-11 | 1994-03-08 | Minolta Camera Kabushiki Kaisha | Image forming apparatus having spacing roller for maintaining uniform spacing between image bearing member and developing material supplying means |
JP2899079B2 (ja) * | 1990-07-10 | 1999-06-02 | キヤノン株式会社 | 現像装置 |
US5311260A (en) * | 1991-03-08 | 1994-05-10 | Mita Industrial Co., Ltd. | Developing device |
US5166733A (en) * | 1992-01-30 | 1992-11-24 | Xerox Corporation | Blade and seal for preventing migration of toner particles from a developer roll in an electrophotographic printer |
JPH05281841A (ja) * | 1992-03-30 | 1993-10-29 | Ricoh Co Ltd | 現像装置 |
JP2597024Y2 (ja) * | 1992-11-06 | 1999-06-28 | ミノルタ株式会社 | 現像装置 |
JP2002296240A (ja) | 2001-03-29 | 2002-10-09 | Ricoh Co Ltd | 透磁率検知装置、これを用いた画像形成装置又はディジタル複写機、トナー濃度検知装置、電気電導率検知装置 |
US20040251435A1 (en) * | 2003-04-07 | 2004-12-16 | Noboru Sawayama | Optical sensor and image forming apparatus |
EP1467261B1 (en) * | 2003-04-11 | 2011-11-02 | Ricoh Company, Ltd. | Image forming apparatus for preventing image deterioration caused by fallen conductive brush and scatter of developer |
US6996353B2 (en) * | 2004-01-20 | 2006-02-07 | Xerox Corporation | Spring loaded plastic toner seal retainer |
US8923726B2 (en) * | 2011-04-21 | 2014-12-30 | Ricoh Company, Ltd. | Image forming apparatus incorporating developing device with first and second seals |
JP5861679B2 (ja) * | 2013-09-02 | 2016-02-16 | コニカミノルタ株式会社 | 現像装置および画像形成装置 |
JP6686466B2 (ja) * | 2016-01-21 | 2020-04-22 | 富士ゼロックス株式会社 | 現像装置および画像形成装置 |
US9939756B1 (en) * | 2016-12-27 | 2018-04-10 | Kabushiki Kaisha Toshiba | Image forming apparatus and method for preventing toner scattering in an image forming appratus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50102348U (ja) * | 1973-12-24 | 1975-08-23 | ||
JPS5789780A (en) * | 1980-11-26 | 1982-06-04 | Mita Ind Co Ltd | Improvement of magnetic brush developing method |
JPS582860A (ja) * | 1981-06-29 | 1983-01-08 | Canon Inc | 画像形成装置 |
JPS6180279A (ja) * | 1984-09-28 | 1986-04-23 | Toshiba Corp | 現像装置 |
JPS62192769U (ja) * | 1986-05-29 | 1987-12-08 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900002A (en) * | 1972-05-10 | 1975-08-19 | Xerox Corp | Donor apparatus |
US3809012A (en) * | 1972-11-24 | 1974-05-07 | Xerox Corp | Developer seal |
US4142165A (en) * | 1976-03-25 | 1979-02-27 | Ricoh Company, Ltd. | Electrostatic copying machine comprising improved magnetic brush developing-cleaning unit |
JPS6012130Y2 (ja) * | 1978-12-02 | 1985-04-19 | オリンパス光学工業株式会社 | 現像トナ−補給装置 |
JPS5994352U (ja) * | 1982-12-14 | 1984-06-27 | 株式会社リコー | 現像装置 |
JPS6051853A (ja) * | 1983-08-31 | 1985-03-23 | Toshiba Corp | 現像装置 |
-
1986
- 1986-12-29 JP JP1986200966U patent/JPH0755564Y2/ja not_active Expired - Lifetime
-
1987
- 1987-12-29 US US07/139,317 patent/US4897693A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50102348U (ja) * | 1973-12-24 | 1975-08-23 | ||
JPS5789780A (en) * | 1980-11-26 | 1982-06-04 | Mita Ind Co Ltd | Improvement of magnetic brush developing method |
JPS582860A (ja) * | 1981-06-29 | 1983-01-08 | Canon Inc | 画像形成装置 |
JPS6180279A (ja) * | 1984-09-28 | 1986-04-23 | Toshiba Corp | 現像装置 |
JPS62192769U (ja) * | 1986-05-29 | 1987-12-08 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012103588A (ja) * | 2010-11-12 | 2012-05-31 | Murata Mach Ltd | 感光体のクリーニング装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH0755564Y2 (ja) | 1995-12-20 |
US4897693A (en) | 1990-01-30 |