ELECTROSTATIC INK COMPOSITION

• Main Authors: GUANG, JIN LI, BAR-HAIM, GIL, KLEIN, MARC, KABALNOV, ALEXEY S, TEISHEV, ALBERT, BODINGER, EYAL
• Format: Patent
• Language: English; French
• Published: 04.10.2012
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; CINEMATOGRAPHY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; CORRECTION OF TYPOGRAPHICAL ERRORS; DYES; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; FILLING PASTES; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; INKS; LINING MACHINES; MAGNETOGRAPHY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; POLISHES; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

The present disclosure is drawn to an electrostatic ink composition comprising: (a) a carrier liquid; (b) particles comprising: (i) a polymer having a melt flow rate of less than 60 g/10 minutes, (ii) a colorant, (c) a charge director, wherein the electrostatic ink composition excludes a positively charged organic molecule or an organic molecule capable of becoming a positively charged organic molecule during an electrostatic printing process. Also disclosed herein is a method of producing a electrostatic ink composition and a method of electrophotographic printing an electrostatic ink composition. La présente invention concerne une composition d'encre électrostatique comprenant : (a) un support liquide; (b) des particules comprenant : (i) un polymère présentant un indice de fluidité à chaud inférieur à 60 g/10 minutes, (ii) un colorant, (c) un agent de gestion de charge, la composition d'encre électrostatique excluant une molécule organique positivement chargée ou une molécule organique capable de devenir une molécule organique positivement chargée pendant un processus d'impression électrostatique. L'invention concerne également un procédé de production d'une composition d'encre électrostatique et un procédé d'impression électrophotographique d'une composition d'encre électrostatique.