US patent issued to Kodak for 'large-particle inkjet printing on semiporous paper'

ALEXANDRIA, Virginia , October 29, 2013 () – United States Patent no. 8,567,938, issued on Oct. 29, was assigned to Eastman Kodak Co. (Rochester, N.Y.).

"Large-particle inkjet printing on semiporous paper" was invented by Thomas Nathaniel Tombs (Rochester, N.Y.) and Donald Saul Rimai (Webster, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A print is produced on a semiporous recording medium. The semiporous recording medium is dried to an equilibrated 20% RH. Hydrophilic liquid is deposited on the medium in a selected fluid pattern within 15 seconds after the completion of drying. The recording medium is charged so that a charge pattern of charged and discharged areas is formed on the recording medium and the discharged areas correspond to the fluid pattern. Charged dry ink having charge of the same sign as the charge in the charged areas on the recording medium is deposited on the medium in a pattern corresponding to the selected fluid pattern. The dry ink is at least in part hydrophilic, so the dry ink adheres to the hydrophilic liquid, and at least some of the liquid is drawn into or around the deposited dry ink particles."

The patent was filed on Sept. 27, 2011, under Application No. 13/245,957.

*For further information, including images, charts and tables, please visit: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&co1=AND&d=PTXT&s1=8567938&OS=8567938&RS=8567938

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