ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,773, issued on Sept. 30, was assigned to TOYOBO MC Corp. (Osaka, Japan).
"Flexographic printing plate precursor" was invented by Kazuya Yoshimoto (Okayama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flexographic printing plate precursor is disclosed in which the size and the number of pinholes in a heat-sensitive mask layer are reduced in a simple manner, and to provide a flexographic printing plate almost free from disadvantages caused by the pinholes, based on the flexographic printing plate precursor. A flexographic printing plate precursor comprising at least a support (A), a photosensitive resin layer (B), a heat-sensitive mask lay...