PASSIVE VACUUM TRANSPORT BELT
Original Publication Date: 1997-Apr-30
Included in the Prior Art Database: 2004-Apr-08
Xerox Disclosure Journal
Disclosed is a paper transport belt which is comprised of hollow, independent, and compressible chambers. Typically, vacuum transport belt assemblies utilized either fans or blowers, resident or ducted airflow, to create the positive drive force between the paper and the driving belts. These transport assemblies are used primarily to move paper vertically or up-side-down between subsystems, most notably between the post-transfer zone and the fuser entrance. These transports enable the unfused sheet, from the non-imaged side, to be moved without causing image disturbance. Each chamber is completely sealed with only a small pin hole to allow air to escape or be trapped. Each chamber is compressed as the belt is driven at the drive rolls, it creates a vacuum as each chamber attempts to relax, but cannot due to paper acting as the air restriction. As the paper and the belt reach the next drive roll, the belt is compressed as it conforms to the radius of the roll allowing the sheet to be released and accepted by the next subsystem.