Liquid delivery systems, fuser assemblies, printing apparatuses and methods of delivering release agents to fusing imaging surfaces

摘要

Liquid delivery systems, fuser assemblies, printing apparatuses and methods of delivering release agents to fusing imaging surfaces are disclosed. An embodiment of the liquid supply systems for delivering a liquid to a fusing imaging surface of a fusing member includes a first roll (302) having a first outer surface (304) adapted to contact a liquid contained in a sump; a first shim (316) adapted to contact the first outer surface (304) and the liquid in the sump; a second roll (306) having a second outer surface (308) adapted to contact the liquid in the sump, the first and second rolls (306,308) contacting each other at an interface (314); and a second shim (318) adapted to contact the second outer surface and the liquid in the sump. At least one of the first outer surface (304) and the second outer surface (308) is comprised of a compressible material which is compressed along the interface. The first and second shims (316,318) define a liquid passage through which the liquid is metered from the sump to the interface, and the first and second rolls are rotatable to meter the liquid through the interface to the fusing imaging surface of the fusing member.