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WATERPROOF CARBON BLACK INK FOR IN JET PRINTING

IP.com Disclosure Number: IPCOM000023801D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 189K

Publishing Venue

Xerox Disclosure Journal

Abstract

A waterproof colloidal carbon black ink for ink jet printing is prepared by incorporating a water-resistant acrylic polymer binder Carboset 514H, available from B. F. Goodrich, into an ink jet ink. An example ink is made up of about 9°6 by weight Raven 1255, a carbon black available from Columbian Carbon Company,

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XEROX DISCLOSURE JOURNAL

WATERPROOF CARBON BLACK INK Proposed Classification FOThiM<~ET PRINTING U.S. Cl. 260/29.6 Victor K, Dunn mt. Cl. C081

A waterproof colloidal carbon black ink for ink jet printing is prepared by incorporating a water~resistant acrylic polymer binder Carboset 514H, available from B. F. Goodrich, into an ink jet ink. An example ink is made up of about 9°6 by weight Raven 1255, a carbon black available from Columbian Carbon Company, Inc.; about 2% by weight Tamol SN, an anionic polymer-~type dispersing agent available from Rohn & Haas Co.; about 5% by weight polyethylene glycol, molecular weight 380-.420; about 8% by weight Carboset 514H and about 76% by weight ammoniated distilled water. Sufficient ammonium hydroxide is added to the ink to adjust the pH to 8.5.

The ink dries to the touch under ambient conditions in 3 5 seconds. The dried ink was extremely rub-resistant even when saturated with water. Reflection print densities were 00 '> 1.3. The ink is particularly suited to ink jets run in a continuous mode.

Volume 4 Number 1 January/February 1979 45

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