Jet ink composition

The present invention provides a jet ink composition comprising a volatile organic solvent, an oil, one or more binder resins which are soluble in the volatile organic solvent, and a colorant. The ink composition is fast drying and provides excellent adhesion to non-porous substrates. Printers, such...

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Bibliographische Detailangaben
Hauptverfasser:	W.K. ZOU, C. WOODCOCK, X. WANG
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COLOUR PRINTING CORRECTING FLUIDS CORRECTION OF TYPOGRAPHICAL ERRORS DYES FILLING PASTES i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INKS LINING MACHINES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The present invention provides a jet ink composition comprising a volatile organic solvent, an oil, one or more binder resins which are soluble in the volatile organic solvent, and a colorant. The ink composition is fast drying and provides excellent adhesion to non-porous substrates. Printers, such as drop-on-demand ink jet printers, employing the ink composition can operate without nozzle clogging even after long non-printing intervals. The present invention further provides a method for reducing clogging of a nozzle orifice in an ink jet printer comprising printing with an ink composition that includes an oil that forms a continuous oil phase which acts as the boundary layer between the air outside the nozzle orifice and the ink inside the nozzle during non-printing intervals. The present invention further provides a process for jet ink printing onto a substrate comprising projecting a stream of ink droplets of the ink composition of the present invention to the substrate and controlling the direction of the droplets so that the droplets form the desired printed image on the substrate.