About: http://webisa.webdatacommons.org/190812465

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	However, in terms of apparatus cost, it is more economical to use a drum as the photo-sensitive member than a belt, for which reason there is a demand to impart even greater flexibility to the developer roller.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com