JPS5796355A - Carrier for electrophotographic developer - Google Patents

Carrier for electrophotographic developer

Info

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
Application number
JP55172005A
Other languages
Japanese (ja)
Other versions
JPS6355702B2 (en
Inventor
Naoyuki Ushiyama
Satoru Inoue
Kimitoshi Yamaguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55172005A priority Critical patent/JPS5796355A/en
Publication of JPS5796355A publication Critical patent/JPS5796355A/en
Publication of JPS6355702B2 publication Critical patent/JPS6355702B2/ja
Granted 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
    • 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

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.
JP55172005A 1980-12-08 1980-12-08 Carrier for electrophotographic developer Granted JPS5796355A (en)

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)

* Cited by examiner, † Cited by third party
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
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
US8652738B2 (en) 2010-09-07 2014-02-18 Ricoh Company, Ltd. Contact developing method, image forming apparatus, and process cartridge
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04207911A (en) * 1990-11-30 1992-07-29 Hino Motors Ltd Electric brake controller

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421730A (en) * 1977-07-19 1979-02-19 Ricoh Co Ltd Electrophotographic carrier material
JPS5421729A (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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421730A (en) * 1977-07-19 1979-02-19 Ricoh Co Ltd Electrophotographic carrier material
JPS5421729A (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)

* Cited by examiner, † Cited by third party
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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