The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2015
Filed:
Sep. 14, 2010
Sean Dennis Slater, Royston, GB;
Andrew John Clippingdale, Royston, GB;
Guy Charles Fernley Newcombe, Royston, GB;
Sean Dennis Slater, Royston, GB;
Andrew John Clippingdale, Royston, GB;
Guy Charles Fernley Newcombe, Royston, GB;
TONEJET LIMITED, Royston, Hertfordshire, GB;
Abstract
A process for forming an image on a substrate, comprises depositing ink compositions of at least two colors onto the substrate to form the image, and fixing the image to the substrate, wherein the ink is deposited using an electrostatic printhead, which ejects chargeable marking particles dispersed in a carrier fluid by using an applied electric field to first concentrate and then eject the marking particles, and wherein all of the ink compositions are deposited onto the substrate before the image is fixed. An ink composition suitable for use in the invention comprises: 45-95% by weight of a carrier liquid; 6-40% by weight of insoluble chargeable marking particles; and 0.4-10% by weight of a soluble dispersant, characterized in that the ink does not contain an agent that can fix the marking particles to a substrate.