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:
Jun. 14, 2016
Filed:
Jan. 24, 2011
John Gerard Tiessen, Elk Grove Village, IL (US);
Terry Best, Newark, NJ (US);
Juanita Parris, Montvale, NJ (US);
Xiang Jun Liu, Elmhurst, IL (US);
John Gerard Tiessen, Elk Grove Village, IL (US);
Terry Best, Newark, NJ (US);
Juanita Parris, Montvale, NJ (US);
Xiang Jun Liu, Elmhurst, IL (US);
SUN CHEMICAL CORPORATION, Parsippany, NJ (US);
Abstract
Methods and apparatus for flexographic color printing, and more particularly for implementing 'wet trapping' in flexographic printing using energy curable flexographic liquid inks are presented. Radiation curable inks can be formulated that wet trap over each other without back-trapping onto the plates and anilox units of down-line printing units by controlling the storage modulus of the inklcoating. The storage modulus G' in the inks can be controlled to ensure that the highest G′ ink is printed ISt down with successive colors being trapped in the order of their (declining) G′ values. An image in wet ink can thus be trapped over a different image in wet ink of a different color without picking the ISt ink back up and redepositing it onto the subsequent plates and rollers in the printing press (back-trapping).