Phase change inks

US7658486B2 · kind B2 · utility

Assignee

• Xerox Corporation · US

Inventors

• Trevor James Snyder · Newberg, US
• Bo Wu · Hengshan, TW
• Patricia Wang · Lake Oswego, US
• Donald R. Titterington · Tualatin, US
• Jule W. Thomas, Jr. · West Linn, US
• Randall R. Bridgeman · Hubbard, US
• Mark H. Tennant · West Linn, US

Key dates

• Filing date: Nov 30, 2005
• Grant date: Feb 9, 2010
• Expiry date: Feb 19, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/34
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a phase change ink composition including an ink carrier and a colorant, said ink being suitable for use in an indirect printing process wherein the ink is jetted from a printhead onto a heated intermediate transfer member and subsequently transferred from the intermediate transfer member to a final recording substrate, wherein: (a) the ink exhibits the characteristic of being jetted from the printhead onto the intermediate transfer member when the ink at a temperature of about 125° C. or lower; (b) the ink exhibits the characteristic of being jetted without purging from a printer maintained at a standby temperature of about 100° C. or lower; and (c) the ink has a cohesive failure temperature of at least about 56° C.