EP0306330A3 - Toner and process for preparation thereof - Google Patents

Toner and process for preparation thereof Download PDF

Info

Publication number
EP0306330A3
EP0306330A3 EP88308153A EP88308153A EP0306330A3 EP 0306330 A3 EP0306330 A3 EP 0306330A3 EP 88308153 A EP88308153 A EP 88308153A EP 88308153 A EP88308153 A EP 88308153A EP 0306330 A3 EP0306330 A3 EP 0306330A3
Authority
EP
European Patent Office
Prior art keywords
toner
static electrification
pigment
resin
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.)
Withdrawn
Application number
EP88308153A
Other languages
German (de)
French (fr)
Other versions
EP0306330A2 (en
Inventor
Tatsuhiro c/o Soken Chemical & Imai
Susumu c/o Soken Chemical & Kawase
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.)
Soken Chemical and Engineering Co Ltd
Original Assignee
Soken Chemical and Engineering 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 Soken Chemical and Engineering Co Ltd filed Critical Soken Chemical and Engineering Co Ltd
Publication of EP0306330A2 publication Critical patent/EP0306330A2/en
Publication of EP0306330A3 publication Critical patent/EP0306330A3/en
Withdrawn legal-status Critical Current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
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • 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
    • G03G9/0802—Preparation methods
    • 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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Manufacturing Of Micro-Capsules (AREA)

Abstract

Toner particles are described, each particle comprising a spheroidal resin core, a pigment layer on the surface of said core and a layer of a static electrification controlled resin on the surface of said pigment layer. The state of static electrification of the toner is substantially deter­ mined by that of the outermost layer of the static electrification con­ trolled resin, and thus can be precisely controlled by simply control­ ling the amount of static electrification of the resin particles used to form the outermost layer. Since the state of static electrification of the toner can be precisely controlled, the kind and concentration of the pigment used can be freely selected. The presence of the outermost layer 3 prevents the pigment from breaking away from the toner. Further, it is possible to improve the fluidity and anti-block properties of the toner without any adverse effect. In addition, it is not necessary to use an additional static electrification controlling agent such as silica which might adversely affect the color shade of the toner.
EP88308153A 1987-09-02 1988-09-02 Toner and process for preparation thereof Withdrawn EP0306330A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62221126A JPS6462666A (en) 1987-09-02 1987-09-02 Toner and production thereof
JP221126/87 1987-09-02

Publications (2)

Publication Number Publication Date
EP0306330A2 EP0306330A2 (en) 1989-03-08
EP0306330A3 true EP0306330A3 (en) 1989-08-09

Family

ID=16761868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88308153A Withdrawn EP0306330A3 (en) 1987-09-02 1988-09-02 Toner and process for preparation thereof

Country Status (3)

Country Link
EP (1) EP0306330A3 (en)
JP (1) JPS6462666A (en)
KR (1) KR890005577A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2566152B2 (en) * 1988-02-08 1996-12-25 キヤノン株式会社 Manufacturing method of microcapsule toner
US5215854A (en) * 1988-10-05 1993-06-01 Canon Kabushiki Kaisha Process for producing microcapsule toner
JPH0816805B2 (en) * 1989-12-11 1996-02-21 株式会社巴川製紙所 Electrophotographic dry toner and method for producing the same
JPH04316057A (en) * 1991-04-15 1992-11-06 Ricoh Co Ltd Manufacture of electrostatic charge image developing toner
JPH05323654A (en) * 1992-05-21 1993-12-07 Toshiba Corp Toner, production of toner and image forming device
JP4182968B2 (en) 2005-09-29 2008-11-19 ブラザー工業株式会社 Toner manufacturing method and positively chargeable non-magnetic one-component toner
CN112892429B (en) * 2021-01-25 2022-07-08 唐山开滦化工科技有限公司 Reversible thermochromic thermal expansion microcapsule and preparation method and application thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571515A1 (en) * 1984-10-08 1986-04-11 Canon Kk COATED PIGMENT POWDER FOR THE DEVELOPMENT OF ELECTROSTATIC IMAGES AND PROCESS FOR PRODUCING THE SAME

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06803B2 (en) * 1985-09-13 1994-01-05 日本合成ゴム株式会社 Method for producing colored polymer particles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571515A1 (en) * 1984-10-08 1986-04-11 Canon Kk COATED PIGMENT POWDER FOR THE DEVELOPMENT OF ELECTROSTATIC IMAGES AND PROCESS FOR PRODUCING THE SAME

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 259 (C-441)[2706], 21st August 1987; & JP-A-62 061 632 (JAPAN SYNTHETIC RUBBER CO., LTD) 18-03-1987 *

Also Published As

Publication number Publication date
EP0306330A2 (en) 1989-03-08
KR890005577A (en) 1989-05-15
JPS6462666A (en) 1989-03-09

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