(19)
(11) EP 1 237 047 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION

(48) Corrigendum issued on:
19.02.2003 Bulletin 2003/08

(43) Date of publication:
04.09.2002 Bulletin 2002/36

(21) Application number: 02004237.0

(22) Date of filing: 26.02.2002
(51) International Patent Classification (IPC)7: G03G 9/09, G03G 9/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 01.03.2001 JP 2001056636

(71) Applicant: DAINIPPON INK AND CHEMICALS, INC.
Itabashi-ku Tokyo (JP)

(72) Inventors:
  • Takayanagi, Hitoshi
    Saitma-shi, Saitama-ken (JP)
  • Ito, Takashi
    Tokyo (JP)
  • Ogura, Katsuyuki
    Saitama-shi, Saitama-ken (JP)

(74) Representative: Albrecht, Thomas, Dr. et al
Kraus & Weisert, Thomas-Wimmer-Ring 15
80539 München
80539 München (DE)

   


(54) Dry color toner for electrostatic image development


(57) A spherical dry color toner for electrostatic image development produces a clear image after printing and has an excellent color reproducibility in color overlapping during multi-color printing, and also yields an image having a transparency fixed on an OHP sheet and can achieve a clear color free from turbidity when projected on a screen. A spherical dry color toner for electrostatic image development comprises a binder resin and an organic pigment dispersed finely in the binder resin, wherein the organic pigment is an organic pigment represented by the formula 1: wherein R1 represents a non-substituted phenyl group or a phenyl group having a substituent, R2 represents hydrogen, a non-substituted phenyl group or a phenyl group having a substituent, and R3 represents an alkoxy group or an ester group.