High gloss high gamut pigment inkjet ink

• US 7,429,293 B2
• Filed: 01/13/2006
• Issued: 09/30/2008
• Est. Priority Date: 01/13/2006
• Status: Expired due to Fees

• Current Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Original Assignee: Lexmark International Incorporated (Ninestar Corporation)
• Inventors: Cai, Xiaorong
• Primary Examiner(s): Lorengo; Jerry
• Assistant Examiner(s): FAISON, VERONICA F
• Application Number:
  US11/331,740
• Publication Number:
  US 20070163468A1
• Time in Patent Office: 991 Days
• Field of Search: 106/31.89
• US Class Current: 106/31.89
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

Inkjet ink having pigment colorant and two surfactants having low dynamic surface tension as follows: 0.1% to 0.8% by weight of the ink of 2,5,8,11-tetraethyl-6-dodecyn-5,8-diol ethoxylate (sold commercially as DYNOL™ 604) and 0.5 to 1.0% by weight of the ink of ethoxylated 2,4,7,9-tetramethyl-5-decyn-4,7-diol (sold commercially as SURFYNOL® 465). The inks are significantly improved in photo gloss and color gamut for the printed image on swellable and porous glossy photo media.

Claims

1. An inkjet ink comprising a pigment dispersion as a colorant, water, and a humectant characterized by said ink comprising 0.1% to 0.8% by weight of the ink of 2,5,8,11-tetraethyl-6-dodecyn-5,8-diol ethoxylate and 0.5 to 1.0% by weight of the ink of ethoxylated 2,4,7,9-tetramethyl-5-decyn-4,7-diol.

2. The inkjet ink as in claim 1 in which about 0.5% by weight of the ink of 2,5,8,11-tetraethyl-6-dodecyn-5,8-diol ethoxylate and about 0.7% by weight of the ink of ethoxylated 2,4,7,9-tetramethyl-5-decyn-4,7-diol.