|Applicants:||HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US/US]; 11445 Compaq Center Drive W. Houston, Texas 77070 (US)|
|Inventors:||CHEN, Tienteh; (US).
HUANG, Bin; (US).
ABELOVSKI, Benjamin; (US).
SARKISIAN, George; (US)
|Agent:||LEMMON, Marcus; (US)|
|Title||(EN) RADIATION CURABLE POLYURETHANE-BASED BINDER DISPERSION
(FR) DISPERSION DE LIANT À BASE DE POLYURÉTHANNE DURCISSABLE PAR RAYONNEMENT
(EN)A radiation curable polyurethane-based binder dispersion includes water and a radiation curable polyurethane dispersed in the water. The polyurethane is formed from: a polyisocyanate; a polyol having a chain with two hydroxyl functional groups at one end of the chain and no hydroxyl groups at an opposed end of the chain, and having a number average molecular weight ranging from about 500 to about 5,000; an acrylate or methacrylate, the acrylate or methacrylate having at least one hydroxyl functional group and having an acrylate functional group or a methacrylate functional group; an alcohol or a diol or an amine having a number average molecular weight less than 600; and a sulfonate or sulfonic acid having one or two amino functional groups.
[0001 ] In addition to home and office usage, inkjet technology has been expanded to high-speed, commercial and industrial printing. Inkjet printing is a non-impact printing method that utilizes electronic signals to control and direct droplets or a stream of ink to be deposited on media. Some commercial and industrial inkjet printers utilize fixed printheads and a moving substrate web in order to achieve high speed printing. Current inkjet printing technology involves forcing the ink drops through small nozzles by thermal ejection, piezoelectric pressure or oscillation onto the surface of the media. This technology has become a popular way of recording images on various media surfaces (e.g., paper), for a number of reasons, including, low printer noise, capability of high-speed recording and multi-color recording.