EP0422892A3 - Developer and developing process using said developer - Google Patents

Developer and developing process using said developer Download PDF

Info

Publication number
EP0422892A3
EP0422892A3 EP19900311048 EP90311048A EP0422892A3 EP 0422892 A3 EP0422892 A3 EP 0422892A3 EP 19900311048 EP19900311048 EP 19900311048 EP 90311048 A EP90311048 A EP 90311048A EP 0422892 A3 EP0422892 A3 EP 0422892A3
Authority
EP
European Patent Office
Prior art keywords
developer
toner
density
developing process
image
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
EP19900311048
Other languages
German (de)
French (fr)
Other versions
EP0422892B1 (en
EP0422892A2 (en
Inventor
Takatomo Fukumoto
Takashi Teshima
Kazuhiko Yamamura
Kyouya Taguchi
Hiroyuki Hazama
Takeshi Higuchi
Koji Honda
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of EP0422892A2 publication Critical patent/EP0422892A2/en
Publication of EP0422892A3 publication Critical patent/EP0422892A3/en
Application granted granted Critical
Publication of EP0422892B1 publication Critical patent/EP0422892B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G9/0821—Developers with toner particles characterised by physical parameters
    • G03G9/0823—Electric parameters
    • 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

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)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

Disclosed is a two-component type developer comprising a toner having an electroconductivity lower than 3.5 x 10⁻¹⁰ S/cm, in which an amino group-­ containing silicone resin is used as the coating resin for a magnetic carrier. By using the amino group-­ containing silicone resin as the coating resin for the magnetic carrier, reduction of the image density caused by a lowly electroconductive toner is prevented, and even in a color developer for which a lowly electroconductive toner is used, a high-density image can be formed. According to a developing process using this developer, the development is possible even under a high bias voltage condition, and a high-quality image having a high density can be formed.
EP19900311048 1989-10-09 1990-10-09 Developer and developing process using said developer Expired - Lifetime EP0422892B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP262243/89 1989-10-09
JP26224389 1989-10-09
JP2049513A JP2648221B2 (en) 1989-10-09 1990-03-02 Magnetic brush development method using white toner
JP49513/90 1990-03-02

Publications (3)

Publication Number Publication Date
EP0422892A2 EP0422892A2 (en) 1991-04-17
EP0422892A3 true EP0422892A3 (en) 1991-05-29
EP0422892B1 EP0422892B1 (en) 1995-02-15

Family

ID=26389909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900311048 Expired - Lifetime EP0422892B1 (en) 1989-10-09 1990-10-09 Developer and developing process using said developer

Country Status (4)

Country Link
EP (1) EP0422892B1 (en)
JP (1) JP2648221B2 (en)
DE (1) DE69016913T2 (en)
ES (1) ES2071037T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11143129A (en) * 1997-11-11 1999-05-28 Brother Ind Ltd Dyed toner
JP3497396B2 (en) * 1998-12-24 2004-02-16 京セラミタ株式会社 Electrostatic latent image developing carrier and electrostatic latent image developer
US9897935B2 (en) * 2015-03-25 2018-02-20 Konica Minolta, Inc. Image forming method, electrostatic charge image developer set, and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242434A (en) * 1975-11-26 1980-12-30 Ricoh Company, Ltd. Toner composition for multiple copy electrostatic photography
GB2119108A (en) * 1982-03-15 1983-11-09 Xerox Corp Coated carrier for electrostatographic toner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105652A (en) * 1982-12-09 1984-06-19 Konishiroku Photo Ind Co Ltd Toner for developing electrostatic charge image
JPS59139056A (en) * 1983-01-31 1984-08-09 Mita Ind Co Ltd Magnetic brush developing method
JPS59228261A (en) * 1983-06-09 1984-12-21 Fuji Xerox Co Ltd Two-component type developer for electrophotography
JPS6159361A (en) * 1984-08-31 1986-03-26 Mita Ind Co Ltd Formation of negative and positive image by electrophotography
JPH073610B2 (en) * 1985-11-27 1995-01-18 三田工業株式会社 High-speed development method for amorphous silicon photoconductive layer
JPS6350866A (en) * 1986-08-21 1988-03-03 Minolta Camera Co Ltd Electrostatic latent image developing carrier
JP2615118B2 (en) * 1987-02-26 1997-05-28 三田工業株式会社 White toner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4242434A (en) * 1975-11-26 1980-12-30 Ricoh Company, Ltd. Toner composition for multiple copy electrostatic photography
GB2119108A (en) * 1982-03-15 1983-11-09 Xerox Corp Coated carrier for electrostatographic toner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 266 (P-735)(3113) 26 July 1988, & JP-A-63 50866 (MINOLTA CAMERA CO.,LTD.) 03 March 1988, *

Also Published As

Publication number Publication date
EP0422892B1 (en) 1995-02-15
JPH03200978A (en) 1991-09-02
JP2648221B2 (en) 1997-08-27
DE69016913D1 (en) 1995-03-23
EP0422892A2 (en) 1991-04-17
ES2071037T3 (en) 1995-06-16
DE69016913T2 (en) 1995-06-08

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