Title:
静電写真現像液組成物
Document Type and Number:
Japanese Patent JP3531747
Kind Code:
B2
Abstract:
PCT No. PCT/EP94/01855 Sec. 371 Date Dec. 6, 1994 Sec. 102(e) Date Dec. 6, 1994 PCT Filed Jun. 7, 1994 PCT Pub. No. WO95/00884 PCT Pub. Date Jan. 5, 1995This invention provides an electrostatographic developer composition comprising carrier particles and toner particles with a toner particle size distribution having a volume average particle size (T) such that 4 m mu =T=12 mu m and an average charge (absolute value) pro diameter in femtocoulomb/10 mu m (CT) after triboelectric contact with said carrier particles such that 1 fC/10 mu m=CT=10 fc/10 mu m characterised in that (i) said carrier particles have a saturation magnetization value, Msat, expressed in Tesla (T) such that Msat>/=0.30 T (ii) said carrier particles have a volume average particle size (Cavg) such that 30 mu m=Cavg=60 mu m (iii) said volume based particle size distribution of said carrier particles has at least 90% of the particles having a particle diameter C such that 0.5 Cavg=C=2Cavg (iv) said volume based particles size distribution of said carrier particles comprises less than b % particles smaller than 25 mu m wherein b=0.35x(Msat)2xP with Msat: saturation magnetization value, Msat, expressed in T P: the maximal field strength of the magnetic developing pole expressed in kA/m (v) said carrier particles comprise a core particle coated with a resin coating in an amount (RC) such that 0.2% w/w=RC=2% w/w.
Inventors:
ヴェルエッカン,アンドレ
ジョリー,ルドヴィク ピエテル
タヴェルニエ,セルジュ マルティン
マムパエイ,ジョセフ
リュッタン,フランク ベール
ジョリー,ルドヴィク ピエテル
タヴェルニエ,セルジュ マルティン
マムパエイ,ジョセフ
リュッタン,フランク ベール
Application Number:
JP50238195A
Publication Date:
May 31, 2004
Filing Date:
June 07, 1994
Export Citation:
Assignee:
ザイコン・インターナショナル・エヌ.・ヴイ.
International Classes:
G03G9/00; G03G9/08; G03G9/087; G03G9/10; G03G9/107; G03G9/113; (IPC1-7): G03G9/08; G03G9/087; G03G9/10; G03G9/113
Attorney, Agent or Firm:
風早 信昭 (外1名)