JPS56128956A - Dry toner - Google Patents

Dry toner

Info

Publication number
JPS56128956A
JPS56128956A JP3204280A JP3204280A JPS56128956A JP S56128956 A JPS56128956 A JP S56128956A JP 3204280 A JP3204280 A JP 3204280A JP 3204280 A JP3204280 A JP 3204280A JP S56128956 A JPS56128956 A JP S56128956A
Authority
JP
Japan
Prior art keywords
grain size
powder
toner
fluidizing agent
resin powder
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.)
Pending
Application number
JP3204280A
Other languages
Japanese (ja)
Inventor
Rikuo Kashiwagi
Teruichiro Matsumura
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP3204280A priority Critical patent/JPS56128956A/en
Publication of JPS56128956A publication Critical patent/JPS56128956A/en
Pending 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds
    • G03G9/09716—Inorganic compounds treated with organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain toner which neither varies in flowability according to humidity nor causes fluctuations of picture quality, by incorporating resin powder within a specific range of grain size, and a fluidizing agent obtained by making hydrophobic the inorganic powder of oxide, sulfide, nitride, carbon black, etc., except silica. CONSTITUTION:Resin powder (including that containing magnetic substance powder) of 5-50mum grain size is used, and the inorganic powder of oxide, sulfide, nitride, carbon black, etc., such as Al2O3 and MgO, and MoS2 and Si3N4 are made hydrophobic in a heat treatment at 150-400 deg.C by using an agent, such as dialkyl silane dihalide, to obtain a fluidizing agent of <=1mum in grain size, so that toner which contains the mixture of the said resin powder and the obtained fluidizing agent to <=20%. Thus, moisture adsorption is made hard, and deterioration in picture quality due to the lowering of flowability according to time and fluctuations of humidity in the atmosphere is prevented. This is specially suitable to one-component type toner which does not contain a carrier.
JP3204280A 1980-03-13 1980-03-13 Dry toner Pending JPS56128956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3204280A JPS56128956A (en) 1980-03-13 1980-03-13 Dry toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3204280A JPS56128956A (en) 1980-03-13 1980-03-13 Dry toner

Publications (1)

Publication Number Publication Date
JPS56128956A true JPS56128956A (en) 1981-10-08

Family

ID=12347803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3204280A Pending JPS56128956A (en) 1980-03-13 1980-03-13 Dry toner

Country Status (1)

Country Link
JP (1) JPS56128956A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132757A (en) * 1982-02-03 1983-08-08 Konishiroku Photo Ind Co Ltd Electrostatic image developer and image formation method
JPS58216252A (en) * 1982-06-11 1983-12-15 Nippon Aerojiru Kk Dry type toner
JPS5937555A (en) * 1982-06-25 1984-03-01 ミネソタ・マイニング・アンド・マニユフアクチユアリング・コンパニ− Toner powder composition
JPS60120368A (en) * 1983-12-05 1985-06-27 Fuji Xerox Co Ltd Single-component nonmagnetic developer
US4555467A (en) * 1981-03-10 1985-11-26 Canon Kabushiki Kaisha Developer having improved flow characteristics and a process for producing same
JPS6120053A (en) * 1984-07-06 1986-01-28 Minolta Camera Co Ltd Toner for developing electrostatic latent image
US4585723A (en) * 1982-02-03 1986-04-29 Konishiroku Photo Industry Co., Ltd. Developer for electrostatic latent image and method of forming image
JPS62209538A (en) * 1986-03-11 1987-09-14 Konishiroku Photo Ind Co Ltd Electrostatic image developing toner
US4868085A (en) * 1985-01-31 1989-09-19 Canon Kabushiki Kaisha Developer for developing electrostatic images and process for forming images
US4891294A (en) * 1987-07-09 1990-01-02 Hitachi Metals, Ltd. Electrostatic development toner
US5306588A (en) * 1991-03-19 1994-04-26 Canon Kabushiki Kaisha Treated silica fine powder and toner for developing electrostatic images
US5635326A (en) * 1994-02-10 1997-06-03 Canon Kabushiki Kaisha Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide
US5752151A (en) * 1994-12-27 1998-05-12 Canon Kabushiki Kaisha Image forming apparatus having a cleaning blade with a tensile strength from 80 to 120 kg/cm2
US5853938A (en) * 1991-01-11 1998-12-29 Canon Kabushiki Kaisha Toner for developing electrostatic image
US6215971B1 (en) 1999-03-29 2001-04-10 Canon Kabushiki Kaisha Electrophotographic image-forming method, electrophotographic image-forming apparatus, and process cartridge
US6982139B2 (en) 2002-05-28 2006-01-03 Fuji Xerox Co., Ltd Electrophotographic color toner, and electrophotographic color developer, toner cartridge, image forming device and image forming method using the same
US7300736B2 (en) 2003-05-27 2007-11-27 Ricoh Company, Ltd. Toner, and developer, image forming method, image forming apparatus and process cartridge using the toner
US8178272B2 (en) 2007-09-12 2012-05-15 Ricoh Company Limited External additive, method of manufacturing same and toner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51101535A (en) * 1975-03-04 1976-09-08 Toyo Ink Mfg Co
JPS52135739A (en) * 1976-05-10 1977-11-14 Toshiba Corp Developing agent for electrostatic image
JPS5394932A (en) * 1977-01-31 1978-08-19 Hitachi Metals Ltd Magnetic toner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51101535A (en) * 1975-03-04 1976-09-08 Toyo Ink Mfg Co
JPS52135739A (en) * 1976-05-10 1977-11-14 Toshiba Corp Developing agent for electrostatic image
JPS5394932A (en) * 1977-01-31 1978-08-19 Hitachi Metals Ltd Magnetic toner

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555467A (en) * 1981-03-10 1985-11-26 Canon Kabushiki Kaisha Developer having improved flow characteristics and a process for producing same
US4585723A (en) * 1982-02-03 1986-04-29 Konishiroku Photo Industry Co., Ltd. Developer for electrostatic latent image and method of forming image
JPH0119582B2 (en) * 1982-02-03 1989-04-12 Konishiroku Photo Ind
JPS58132757A (en) * 1982-02-03 1983-08-08 Konishiroku Photo Ind Co Ltd Electrostatic image developer and image formation method
JPS58216252A (en) * 1982-06-11 1983-12-15 Nippon Aerojiru Kk Dry type toner
JPS5937555A (en) * 1982-06-25 1984-03-01 ミネソタ・マイニング・アンド・マニユフアクチユアリング・コンパニ− Toner powder composition
JPS60120368A (en) * 1983-12-05 1985-06-27 Fuji Xerox Co Ltd Single-component nonmagnetic developer
JPH0574818B2 (en) * 1984-07-06 1993-10-19 Minolta Camera Kk
JPS6120053A (en) * 1984-07-06 1986-01-28 Minolta Camera Co Ltd Toner for developing electrostatic latent image
US4868085A (en) * 1985-01-31 1989-09-19 Canon Kabushiki Kaisha Developer for developing electrostatic images and process for forming images
JPS62209538A (en) * 1986-03-11 1987-09-14 Konishiroku Photo Ind Co Ltd Electrostatic image developing toner
US4891294A (en) * 1987-07-09 1990-01-02 Hitachi Metals, Ltd. Electrostatic development toner
US5853938A (en) * 1991-01-11 1998-12-29 Canon Kabushiki Kaisha Toner for developing electrostatic image
US5306588A (en) * 1991-03-19 1994-04-26 Canon Kabushiki Kaisha Treated silica fine powder and toner for developing electrostatic images
US5635326A (en) * 1994-02-10 1997-06-03 Canon Kabushiki Kaisha Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide
US5752151A (en) * 1994-12-27 1998-05-12 Canon Kabushiki Kaisha Image forming apparatus having a cleaning blade with a tensile strength from 80 to 120 kg/cm2
US6215971B1 (en) 1999-03-29 2001-04-10 Canon Kabushiki Kaisha Electrophotographic image-forming method, electrophotographic image-forming apparatus, and process cartridge
US6982139B2 (en) 2002-05-28 2006-01-03 Fuji Xerox Co., Ltd Electrophotographic color toner, and electrophotographic color developer, toner cartridge, image forming device and image forming method using the same
US7300736B2 (en) 2003-05-27 2007-11-27 Ricoh Company, Ltd. Toner, and developer, image forming method, image forming apparatus and process cartridge using the toner
US8178272B2 (en) 2007-09-12 2012-05-15 Ricoh Company Limited External additive, method of manufacturing same and toner

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