ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,196, issued on May 20, was assigned to HEWLETT-PACKARD DEVELOPMENT COMPANY LP (Spring, Texas).
"Platen vacuum control" was invented by Marcel Llorach To (Sant Cugat del Valles, Spain), Isidoro Maya Agudo (Sant Cugat del Valles, Spain) and Ricardo Sanchis Estruch (Sant Cugat del Valles, Spain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A printing system comprises an air-transmissive platen, a vacuum source, a cap and a controller. The vacuum source is configured to draw air through the platen to bias print media towards the platen. The cap is provided on a surface of the platen, between the vacuum source and the platen. The cap is configured to li...