JPS6466666A - Production of electrophotographic liquid developer - Google Patents

Production of electrophotographic liquid developer

Info

Publication number
JPS6466666A
JPS6466666A JP62223585A JP22358587A JPS6466666A JP S6466666 A JPS6466666 A JP S6466666A JP 62223585 A JP62223585 A JP 62223585A JP 22358587 A JP22358587 A JP 22358587A JP S6466666 A JPS6466666 A JP S6466666A
Authority
JP
Japan
Prior art keywords
copolymer
softening point
liquid medium
mixture
polymer
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
JP62223585A
Other languages
Japanese (ja)
Other versions
JP2614051B2 (en
Inventor
Nobuo Suzuki
Yutaka Sakasai
Hideo Sato
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP62223585A priority Critical patent/JP2614051B2/en
Publication of JPS6466666A publication Critical patent/JPS6466666A/en
Priority to US07/474,688 priority patent/US4966825A/en
Application granted granted Critical
Publication of JP2614051B2 publication Critical patent/JP2614051B2/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
    • G03G9/12—Developers with toner particles in liquid developer mixtures
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components
    • G03G9/131—Developers with toner particles in liquid developer mixtures characterised by polymer components obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Developers In Electrophotography (AREA)

Abstract

PURPOSE:To improve dispersibility of a developer by stirring a mixture of a colorant, an acid group having copolymer, and a liquid medium affinitive to the copolymer at a temperature of its softening point or higher, and after cooling it, dispersing the mixture into the electrically insulating liquid medium in the presence of a basic N-containing polymer. CONSTITUTION:The acid group having ethylenic copolymer, and the liquid medium affinitive to the copolymer, preferably, such as a nonpolar insulating liquid, and the colorant, such as a pigment, are mixed by stirring them with a kneader, mixer, or the like having a dispersing action, at a softening point of the polymer or above it, and the obtained mixture is cooled and solidified below the softening point, coarsely crushed with a mixer or the like, and dispersed into a nonpolar liquid with a ball mill. This process is characterized by executing the dispersion in the presence of the basic N-containing polymer, and using alkylated poly-N-vinylpyrrolidone, acrylic polymer having alkyl groups, or the like for it weaken cohesion, and diluting it into the insulating liquid together with an electric charge controller.
JP62223585A 1987-09-07 1987-09-07 Manufacturing method of liquid developer for electrophotography Expired - Lifetime JP2614051B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62223585A JP2614051B2 (en) 1987-09-07 1987-09-07 Manufacturing method of liquid developer for electrophotography
US07/474,688 US4966825A (en) 1987-09-07 1990-02-06 Method for producing electrophotographic liquid developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62223585A JP2614051B2 (en) 1987-09-07 1987-09-07 Manufacturing method of liquid developer for electrophotography

Publications (2)

Publication Number Publication Date
JPS6466666A true JPS6466666A (en) 1989-03-13
JP2614051B2 JP2614051B2 (en) 1997-05-28

Family

ID=16800471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62223585A Expired - Lifetime JP2614051B2 (en) 1987-09-07 1987-09-07 Manufacturing method of liquid developer for electrophotography

Country Status (1)

Country Link
JP (1) JP2614051B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950483A (en) * 1995-10-28 1999-09-14 Fichtel & Sachs Ag Process for forming a casing cover having an annular recess for a torque converter
JP2007041162A (en) * 2005-08-01 2007-02-15 Seiko Epson Corp Method for manufacturing liquid developer and liquid developer
JP2007041027A (en) * 2005-07-29 2007-02-15 Seiko Epson Corp Method for manufacturing liquid developer and liquid developer
JP2007505953A (en) * 2003-09-18 2007-03-15 リサーチ ラボラトリーズ オブ オーストラリアプロプライエタリイ リミテッド Method of preparing marking liquid and product produced thereby

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451531A (en) * 1977-09-10 1979-04-23 Hoechst Ag Liquid developer
JPS57192962A (en) * 1981-05-09 1982-11-27 Hoechst Ag Electrophotographic liquid developer and making thereof
JPS5949553A (en) * 1982-08-25 1984-03-22 ヘキスト・アクチエンゲゼルシヤフト Xerographic liquid developer for inverse development of negatively charged image and manufacture thereof
JPS59228665A (en) * 1983-06-10 1984-12-22 Mitsubishi Paper Mills Ltd Preparation of liquid developer having negative charge
JPS6163855A (en) * 1984-09-05 1986-04-02 Fuji Photo Film Co Ltd Liquid developer for electrophotogrpahy
JPS61180248A (en) * 1984-12-10 1986-08-12 スペクトラム、サイエンセズ、ベーヴェー Improved toner used in composition for developing electrostatic latent image, making thereof and liquid composition using improved toner
JPS62135842A (en) * 1985-12-04 1987-06-18 イ−・アイ・デユポン・ド・ネモア−ス・アンド・コンパニ− Making liquid toner for formation of electrostatic image
JPS62166362A (en) * 1986-01-20 1987-07-22 Fuji Photo Film Co Ltd Liquid developer for electrostatic photography

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5451531A (en) * 1977-09-10 1979-04-23 Hoechst Ag Liquid developer
JPS57192962A (en) * 1981-05-09 1982-11-27 Hoechst Ag Electrophotographic liquid developer and making thereof
JPS5949553A (en) * 1982-08-25 1984-03-22 ヘキスト・アクチエンゲゼルシヤフト Xerographic liquid developer for inverse development of negatively charged image and manufacture thereof
JPS59228665A (en) * 1983-06-10 1984-12-22 Mitsubishi Paper Mills Ltd Preparation of liquid developer having negative charge
JPS6163855A (en) * 1984-09-05 1986-04-02 Fuji Photo Film Co Ltd Liquid developer for electrophotogrpahy
JPS61180248A (en) * 1984-12-10 1986-08-12 スペクトラム、サイエンセズ、ベーヴェー Improved toner used in composition for developing electrostatic latent image, making thereof and liquid composition using improved toner
JPS62135842A (en) * 1985-12-04 1987-06-18 イ−・アイ・デユポン・ド・ネモア−ス・アンド・コンパニ− Making liquid toner for formation of electrostatic image
JPS62166362A (en) * 1986-01-20 1987-07-22 Fuji Photo Film Co Ltd Liquid developer for electrostatic photography

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950483A (en) * 1995-10-28 1999-09-14 Fichtel & Sachs Ag Process for forming a casing cover having an annular recess for a torque converter
JP2007505953A (en) * 2003-09-18 2007-03-15 リサーチ ラボラトリーズ オブ オーストラリアプロプライエタリイ リミテッド Method of preparing marking liquid and product produced thereby
JP2007041027A (en) * 2005-07-29 2007-02-15 Seiko Epson Corp Method for manufacturing liquid developer and liquid developer
JP2007041162A (en) * 2005-08-01 2007-02-15 Seiko Epson Corp Method for manufacturing liquid developer and liquid developer

Also Published As

Publication number Publication date
JP2614051B2 (en) 1997-05-28

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