(19)
(11) EP 2 351 796 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
21.09.2011 Bulletin 2011/38

(43) Date of publication:
03.08.2011 Bulletin 2011/31

(21) Application number: 09816273.8

(22) Date of filing: 29.09.2009
(51) International Patent Classification (IPC): 
C09B 67/50(2006.01)
C09B 67/04(2006.01)
C09B 67/12(2006.01)
C09B 67/48(2006.01)
 C09B 67/02(2006.01)
C09B 67/08(2006.01)
C09B 67/20(2006.01)
(86) International application number:
PCT/JP2009/066900
(87) International publication number:
WO 2010/035861 (01.04.2010 Gazette 2010/13)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 29.09.2008 JP 2008251550
03.03.2009 JP 2009049962

(71) Applicant: M Technique Co., Ltd.
Osaka 594-1144 (JP)

(72) Inventor:
  • ENOMURA Masakazu
    Izumi-Shi Osaka 594-1144 (JP)

(74) Representative: Robertson, James Alexander 
Marks & Clerk LLP 90 Long Acre
London WC2E 9RA
London WC2E 9RA (GB)

   


(54) NOVEL COPPER PHTHALOCYANINE PIGMENT AND PROCESS FOR PRODUCING COPPER PHTHALOCYANINE FINE PARTICLES


(57) Disclosed is a copper phthalocyanine pigment comprising copper phthalocyanine that is in an alpha-type crystal form and is superior in properties to epsilon-type copper phthalocyanine under specific conditions. Also disclosed is a process for producing copper phthalocyanine microparticles. The copper phthalocyanine pigment comprises copper phthalocyanine that is in an alpha-type crystal form and exhibits a transmission spectrum at 380 to 780 nm that has a highest transmittance wavelength (lambda max) of less than 478nm.