A gray inkjet ink having a black colorant and at least one cyan, magenta, or yellow colorant. By adjusting the amount of cyan, magenta, or yellow colorant in the inkjet ink, a gray inkjet ink having a neutral, warm, cool, or sepia tone is produced. At least one gray inkjet ink is used in a black ink...http://www.google.fr/patents/US20040250726?utm_source=gb-gplus-shareBrevet US20040250726 - Inkjet inks having cyan, yellow, magenta, and/or black colorants and methods of using the same to produce black and white images
Inkjet inks having cyan, yellow, magenta, and/or black colorants and methods ...
Numéro de demande: 10/460,482 Numéro de publication: US 2004/0250726 A1 Date de dépôt: 11 juin 2003 Brevet délivré: US7005003 ( Date de délivrance 28 févr. 2006)
