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EP0367265A3 - Electrophotographic dry developer - Google Patents

Electrophotographic dry developer Download PDF

Info

Publication number
EP0367265A3
EP0367265A3 EP19890120305 EP89120305A EP0367265A3 EP 0367265 A3 EP0367265 A3 EP 0367265A3 EP 19890120305 EP19890120305 EP 19890120305 EP 89120305 A EP89120305 A EP 89120305A EP 0367265 A3 EP0367265 A3 EP 0367265A3
Authority
EP
European Patent Office
Prior art keywords
resin
dry developer
electrophotographic dry
electrophotographic
color
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
EP19890120305
Other languages
German (de)
French (fr)
Other versions
EP0367265B1 (en
EP0367265A2 (en
Inventor
Masao Niki
Koji Akiyama
Yutaka Kanamaru
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Publication of EP0367265A2 publication Critical patent/EP0367265A2/en
Publication of EP0367265A3 publication Critical patent/EP0367265A3/en
Application granted granted Critical
Publication of EP0367265B1 publication Critical patent/EP0367265B1/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
    • G03G9/087—Binders for toner particles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

An electrophotographic dry developer comprises a carrier and toner particles comprising a binder resin comprising (A) a polyester resin and (B) a styrene-acrylic resin obtained by co-polymerizing a monomer having an amino group, at a weight ratio of (A) to (B) ranging from 55:45 to 95:5, both resin (A) and resin (B) and a dyestuff or pigment of chromatic color. It is positively charageable and serves for color electrophotography.
EP19890120305 1988-11-02 1989-11-02 Electrophotographic dry developer Expired - Lifetime EP0367265B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP278105/88 1988-11-02
JP63278105A JP2733073B2 (en) 1988-11-02 1988-11-02 Positive charging dry developer

Publications (3)

Publication Number Publication Date
EP0367265A2 EP0367265A2 (en) 1990-05-09
EP0367265A3 true EP0367265A3 (en) 1991-12-18
EP0367265B1 EP0367265B1 (en) 1996-02-14

Family

ID=17592699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890120305 Expired - Lifetime EP0367265B1 (en) 1988-11-02 1989-11-02 Electrophotographic dry developer

Country Status (3)

Country Link
EP (1) EP0367265B1 (en)
JP (1) JP2733073B2 (en)
DE (1) DE68925670T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2928370B2 (en) * 1990-10-03 1999-08-03 花王株式会社 Binder resin for developer composition for electrophotography and method for producing the same
US6288166B1 (en) * 1993-09-03 2001-09-11 Kao Corporation Binder resin for toner and positively chargeable toner containing the same
DE102004028022B4 (en) 2004-06-09 2006-11-16 Perkinelmer Optoelectronics Gmbh & Co.Kg sensor
JP5195361B2 (en) * 2008-12-02 2013-05-08 コニカミノルタビジネステクノロジーズ株式会社 Two-component developer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122650A1 (en) * 1983-04-13 1984-10-24 Agfa-Gevaert N.V. Toner composition for use in the developing of electrostatic charge patterns
US4560635A (en) * 1984-08-30 1985-12-24 Xerox Corporation Toner compositions with ammonium sulfate charge enhancing additives

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5492326A (en) * 1977-12-29 1979-07-21 Ricoh Co Ltd Electrophotographic carrier material
JPS57155552A (en) * 1981-03-20 1982-09-25 Ricoh Co Ltd Developer for electrophotography
JPS62127749A (en) * 1985-11-29 1987-06-10 Konishiroku Photo Ind Co Ltd Electrostatic image developer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122650A1 (en) * 1983-04-13 1984-10-24 Agfa-Gevaert N.V. Toner composition for use in the developing of electrostatic charge patterns
US4560635A (en) * 1984-08-30 1985-12-24 Xerox Corporation Toner compositions with ammonium sulfate charge enhancing additives

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 305 (P-507)(2361) 17 October 1986 & JP-A-61 120 156 ( KONISHIROKU PHOTO IND. ) 7 June 1986 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 20 (P-330)(1743) 26 January 1985 & JP-A-59 165 068 ( RICOH K.K. ) 18 September 1984 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 262 (P-398)(1985) 19 October 1985 & JP-A-60 112 050 ( KAO SEKKEN K.K. ) 18 June 1985 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 281 (P-403)(2004) 2 July 1985 & JP-A-60 123 851 ( HITACHI KINZOKU K.K. ) 2 July 1985 *

Also Published As

Publication number Publication date
EP0367265B1 (en) 1996-02-14
DE68925670T2 (en) 1996-09-26
EP0367265A2 (en) 1990-05-09
JP2733073B2 (en) 1998-03-30
DE68925670D1 (en) 1996-03-28
JPH02124582A (en) 1990-05-11

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