JPS5796355A - Carrier for electrophotographic developer - Google Patents
Carrier for electrophotographic developerInfo
- Publication number
- JPS5796355A JPS5796355A JP55172005A JP17200580A JPS5796355A JP S5796355 A JPS5796355 A JP S5796355A JP 55172005 A JP55172005 A JP 55172005A JP 17200580 A JP17200580 A JP 17200580A JP S5796355 A JPS5796355 A JP S5796355A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- resin
- coating layer
- layers
- layer
- 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
Classifications
-
- 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
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1132—Macromolecular components of coatings
- G03G9/1135—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/1136—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon atoms
-
- 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
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1131—Coating methods; Structure of coatings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE:To provide a carrier for electrophotographic developing of a long life causing no degradation in properties despite long term use by coating nuclear particle surfaces with plural layers of silicone resins in such a way as to have no adhesiveness. CONSTITUTION:The surfaces of carrier nuclear particles are coated with a silicone resin having critical surface tension lower than the surface tension of a soln. for this resin, after which these are baked to allow the resin to set. Thence, the 2nd silicone resin coating layer is further formed by a similar method on the set resin coating layer and thereafter, multiple layer coatings are applied in the similar manner, whereby a titled carrier is prepd. Thereby, >=2 layers of the silicone resin layers on the nuclear particle surfaces are maintained on the nuclear particle surfaces without adhering to the respective upper and lower layers. Even if the outermost coating layer should be broken by mechanical impact or the like, there is no adhesiveness to the coating layer thereunder and therefore only the outermost layer peels, and this exposes the surface of the under layer, thereby restoring the properties of the carrier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55172005A JPS5796355A (en) | 1980-12-08 | 1980-12-08 | Carrier for electrophotographic developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55172005A JPS5796355A (en) | 1980-12-08 | 1980-12-08 | Carrier for electrophotographic developer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5796355A true JPS5796355A (en) | 1982-06-15 |
JPS6355702B2 JPS6355702B2 (en) | 1988-11-04 |
Family
ID=15933747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55172005A Granted JPS5796355A (en) | 1980-12-08 | 1980-12-08 | Carrier for electrophotographic developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5796355A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61204643A (en) * | 1985-03-08 | 1986-09-10 | Ricoh Co Ltd | Carrier for electrostatic latent image developer |
JP2000310880A (en) * | 1999-04-27 | 2000-11-07 | Mitsubishi Chemicals Corp | Color electrophotographic developer |
US6544707B2 (en) | 2000-07-07 | 2003-04-08 | Fujitsu Limited | Two component developing agent and an image forming apparatus by use of the same |
US7629104B2 (en) | 2005-08-08 | 2009-12-08 | Ricoh Company, Ltd. | Carrier, method for producing the carrier, developer, and image forming method using the developer |
US20100183340A1 (en) * | 2009-01-21 | 2010-07-22 | Osamu Wada | Resin coated carrier, two-component developer, developing device and image forming apparatus |
US8043785B2 (en) | 2006-12-07 | 2011-10-25 | Ricoh Company, Ltd. | Carrier, method for producing the same, developer, and image forming method |
US8084181B2 (en) | 2007-05-11 | 2011-12-27 | Ricoh Company, Ltd. | Carrier and method for producing the same, developer and image forming method |
US8178273B2 (en) | 2006-09-12 | 2012-05-15 | Ricoh Company, Ltd. | Carrier and manufacturing method thereof, developer, process cartridge, image forming apparatus, and image forming method |
US8211610B2 (en) | 2009-03-18 | 2012-07-03 | Ricoh Company Limited | Carrier for use in developer developing electrostatic image, developer using the carrier, and image forming method and apparatus and process cartridge using the developer |
US8329374B2 (en) | 2008-01-18 | 2012-12-11 | Ricoh Company, Ltd. | Carrier, production method thereof, developer and image forming method |
US8475989B2 (en) | 2009-10-15 | 2013-07-02 | Ricoh Company, Limited | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developer |
US8481239B2 (en) | 2009-10-13 | 2013-07-09 | Ricoh Company Limited | Carrier for two-component developer |
US8512928B2 (en) | 2010-09-14 | 2013-08-20 | Rocoh Company, Ltd. | Carrier for developing electrostatic latent image, and two-component developer, supplemental developer, image forming apparatus, process cartridge, and image forming method using the carrier |
US8518626B2 (en) | 2010-03-17 | 2013-08-27 | Ricoh Company, Limited | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and apparatus and process cartridge using the developer |
US8652738B2 (en) | 2010-09-07 | 2014-02-18 | Ricoh Company, Ltd. | Contact developing method, image forming apparatus, and process cartridge |
US8652735B2 (en) | 2010-09-08 | 2014-02-18 | Ricoh Company, Ltd. | Carrier, developer, method of manufacturing carrier, developer container, image forming method, process cartridge, image forming apparatus, and supplemental developer |
US9229347B2 (en) | 2013-02-13 | 2016-01-05 | Ricoh Company, Ltd. | Carrier for two-component developer, two-component developer using the carrier, and process cartridge and image forming method and apparatus using the two component developer |
US9519234B2 (en) | 2012-06-27 | 2016-12-13 | Ricoh Company, Ltd. | Carrier, two-component developer, supplemental developer, image forming method, process cartridge and image forming apparatus |
US9946177B2 (en) | 2016-01-18 | 2018-04-17 | Ricoh Company, Ltd. | Carrier, two-component developer, image forming apparatus, process cartridge, and image forming method |
US9989874B2 (en) | 2016-03-17 | 2018-06-05 | Ricoh Company, Ltd. | Carrier for developing electrostatic latent images, two-component developer, image forming apparatus, toner storing unit, and supplemental developer |
US10054868B2 (en) | 2015-11-27 | 2018-08-21 | Ricoh Company, Ltd. | Carrier, two-component developer, developer for replenishment, process cartridge, image forming apparatus, and image forming method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04207911A (en) * | 1990-11-30 | 1992-07-29 | Hino Motors Ltd | Electric brake controller |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421729A (en) * | 1977-07-19 | 1979-02-19 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS5421730A (en) * | 1977-07-19 | 1979-02-19 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS5492326A (en) * | 1977-12-29 | 1979-07-21 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS55127569A (en) * | 1979-03-24 | 1980-10-02 | Konishiroku Photo Ind Co Ltd | Carrier for electrostatic image development |
JPS5660449A (en) * | 1979-10-23 | 1981-05-25 | Daikin Ind Ltd | Toner for electrostatic print master plate |
-
1980
- 1980-12-08 JP JP55172005A patent/JPS5796355A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5421729A (en) * | 1977-07-19 | 1979-02-19 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS5421730A (en) * | 1977-07-19 | 1979-02-19 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS5492326A (en) * | 1977-12-29 | 1979-07-21 | Ricoh Co Ltd | Electrophotographic carrier material |
JPS55127569A (en) * | 1979-03-24 | 1980-10-02 | Konishiroku Photo Ind Co Ltd | Carrier for electrostatic image development |
JPS5660449A (en) * | 1979-10-23 | 1981-05-25 | Daikin Ind Ltd | Toner for electrostatic print master plate |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61204643A (en) * | 1985-03-08 | 1986-09-10 | Ricoh Co Ltd | Carrier for electrostatic latent image developer |
JP2000310880A (en) * | 1999-04-27 | 2000-11-07 | Mitsubishi Chemicals Corp | Color electrophotographic developer |
US6544707B2 (en) | 2000-07-07 | 2003-04-08 | Fujitsu Limited | Two component developing agent and an image forming apparatus by use of the same |
US7629104B2 (en) | 2005-08-08 | 2009-12-08 | Ricoh Company, Ltd. | Carrier, method for producing the carrier, developer, and image forming method using the developer |
US8178273B2 (en) | 2006-09-12 | 2012-05-15 | Ricoh Company, Ltd. | Carrier and manufacturing method thereof, developer, process cartridge, image forming apparatus, and image forming method |
US8043785B2 (en) | 2006-12-07 | 2011-10-25 | Ricoh Company, Ltd. | Carrier, method for producing the same, developer, and image forming method |
US8084181B2 (en) | 2007-05-11 | 2011-12-27 | Ricoh Company, Ltd. | Carrier and method for producing the same, developer and image forming method |
US8329374B2 (en) | 2008-01-18 | 2012-12-11 | Ricoh Company, Ltd. | Carrier, production method thereof, developer and image forming method |
US8409778B2 (en) * | 2009-01-21 | 2013-04-02 | Sharp Kabushiki Kaisha | Resin coated carrier, two-component developer, developing device and image forming apparatus |
US20100183340A1 (en) * | 2009-01-21 | 2010-07-22 | Osamu Wada | Resin coated carrier, two-component developer, developing device and image forming apparatus |
US8211610B2 (en) | 2009-03-18 | 2012-07-03 | Ricoh Company Limited | Carrier for use in developer developing electrostatic image, developer using the carrier, and image forming method and apparatus and process cartridge using the developer |
US8481239B2 (en) | 2009-10-13 | 2013-07-09 | Ricoh Company Limited | Carrier for two-component developer |
US8475989B2 (en) | 2009-10-15 | 2013-07-02 | Ricoh Company, Limited | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and process cartridge using the developer |
US8518626B2 (en) | 2010-03-17 | 2013-08-27 | Ricoh Company, Limited | Carrier, method for preparing the carrier, developer using the carrier, developer container, and image forming method and apparatus and process cartridge using the developer |
US8652738B2 (en) | 2010-09-07 | 2014-02-18 | Ricoh Company, Ltd. | Contact developing method, image forming apparatus, and process cartridge |
US8652735B2 (en) | 2010-09-08 | 2014-02-18 | Ricoh Company, Ltd. | Carrier, developer, method of manufacturing carrier, developer container, image forming method, process cartridge, image forming apparatus, and supplemental developer |
US8512928B2 (en) | 2010-09-14 | 2013-08-20 | Rocoh Company, Ltd. | Carrier for developing electrostatic latent image, and two-component developer, supplemental developer, image forming apparatus, process cartridge, and image forming method using the carrier |
US9519234B2 (en) | 2012-06-27 | 2016-12-13 | Ricoh Company, Ltd. | Carrier, two-component developer, supplemental developer, image forming method, process cartridge and image forming apparatus |
US9229347B2 (en) | 2013-02-13 | 2016-01-05 | Ricoh Company, Ltd. | Carrier for two-component developer, two-component developer using the carrier, and process cartridge and image forming method and apparatus using the two component developer |
US10054868B2 (en) | 2015-11-27 | 2018-08-21 | Ricoh Company, Ltd. | Carrier, two-component developer, developer for replenishment, process cartridge, image forming apparatus, and image forming method |
US9946177B2 (en) | 2016-01-18 | 2018-04-17 | Ricoh Company, Ltd. | Carrier, two-component developer, image forming apparatus, process cartridge, and image forming method |
US9989874B2 (en) | 2016-03-17 | 2018-06-05 | Ricoh Company, Ltd. | Carrier for developing electrostatic latent images, two-component developer, image forming apparatus, toner storing unit, and supplemental developer |
Also Published As
Publication number | Publication date |
---|---|
JPS6355702B2 (en) | 1988-11-04 |
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