(19)
(11) EP 0 465 558 A1

(12)

(43) Date of publication:
15.01.1992 Bulletin 1992/03

(21) Application number: 90905852.0

(22) Date of filing: 07.03.1990
(51) International Patent Classification (IPC): 
H04N 1/ 52( . )
(86) International application number:
PCT/US1990/001248
(87) International publication number:
WO 1990/010991 (20.09.1990 Gazette 1990/22)
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 07.03.1989 US 19890320072

(71) Applicant: THE COLOR GROUP
Richmond, CA 94805 (US)

(72) Inventors:
  • CODERCH COLLELL, Marcel
    E-Madrid (ES)
  • SOSA TRIVINO, Vicente
    E-28042 Madrid (ES)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
D-80538 München
D-80538 München (DE)

   


(54) METHOD AND APPARATUS FOR PRODUCING HALF-TONE SEPARATIONS IN COLOR IMAGING