Larry Gayle Calhoun

US Patent:

56244851, Apr 29, 1997

Filed:

Sep 8, 1995

Appl. No.:

8/524998

Inventors:

Larry G. Calhoun - Dayton OH

Assignee:

Scitex Digital Printing, Inc. - Dayton OH

International Classification:

C09D 1102

US Classification:

524386

Abstract:

An ink jet ink composition comprises a water soluble polymer, a cosolvent, a water soluble dye, a surfactant, and water as a primary vehicle. The water soluble polymer, the cosolvent, and the surfactant are all present in extremely low amounts. The water soluble polymer is present in a range of from about 0. 05 to 0. 10%; the cosolvent, or glycol ether blend, is present in a range of from about 0. 10 to 2. 00%; and the surfactant is present in a range of from about 0. 01 to 0. 10%.

US Patent:

56016395, Feb 11, 1997

Filed:

May 4, 1995

Appl. No.:

8/434601

Inventors:

Hilarion Braun - Dayton OH
Larry G. Calhoun - Dayton OH
Bipin G. Bhatt - Dayton OH
Eric J. Stevenson - Dayton OH

Assignee:

Scitex Digital Printing, Inc. - Dayton OH

International Classification:

C09D 1102

US Classification:

106 22R

Abstract:

An ink jet ink composition comprises a liquid vehicle, a single dye component, a surfactant and a glycol. The dye is water soluble and selected from the group consisting of Direct Dyes, Acid Dyes and Food Dyes, and preferably from the group consisting of Direct Yellow 86, Acid Red 249, Acid Red 92 and Direct Blue 199. Concentration of the dye is preferably in the range of 1% to 2% by weight. Using the ink composition of the present invention, images are generated by a continuous stream digital color press ink jet printing apparatus. In a preferred embodiment, to optimize runnability and jet straightness, the digital color press employs a gold orifice plate having an orifice diameter in the range of 0. 7 to 0. 8 mil.