A developing roller configured to carry developer and extending in an axial direction includes: a first rotation shaft; a second rotation shaft; a rubber body portion; a first cylindrical rubber portion; and a second cylindrical rubber portion. One or more computer devices are used in a system to manage data in compliance with regulated privacy, security, and electronic transaction standards. The server also continuously determines a present streaming rate at which the RTP packets are streamed into the network wherein the present streaming rate exceeds the normal streaming rate. The back section is further adapted to controllably change the distance between the back ends of the booms to adjust the width of a resulting windrow.