Browse Prior Art Database

POLYETHYLENE IMINE WATERFAST LIQUID INKS

IP.com Disclosure Number: IPCOM000027107D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 127K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed are formulations for aqueous polyethylene imine based inks having improved waterfastness properties for use in high speed, low volume thermal ink jet printers. Ink formulations containing polyethylene imines and derivatives thereof enable inks with substantially lower pH values and superior waterfastness properties. It is believed that a synergistic effect operates to provide the improved observed waterfastness properties observed when the polyethylene imine compounds are used in conjunction with certain dye stuffs, for example, Direct Black 154, and a cosolvent such as sulfolane or pyrollidone, and solvent mixtures thereof.