About: http://webisa.webdatacommons.org/31514605

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Protective cover sheets are employed with photopolymer films which provide a convenient layer for receiving an opaquematerial such as toner particles, ink, or carbon black.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com