BATCH FLUID DELIVERY SYSTEM
Original Publication Date: 1992-Feb-29
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
A precision batch fluid delivery system used in the fabrication of multilayer organic photoreceptors in a rotary atomizer is disclosed.-The system delivers precisely controlled and pulse free amounts of coating fluid to a rotary atomizer. Hydraulic fluid is directed into one side of a hollow chamber separated by an elastomeric diaphragm or membrane at a preselected flow rate. The coating fluid on the opposite side of the membrane is displaced out of this Wow transducer" at the identical flow rate to any suitable device such as a rotary coating applicator. The system is clean, requires little maintenance, and the coating solution may be rapidly changed without the need to disassemble the pumps for cleaning. No cross-contamination of spray fluids occurs. The system may be programmed to perform the following process steps automatically: line priming; delivery; and line and transducer flushing and cleaning. Multiple flow transducers may be coupled in parallel and operated by a single hydraulic circuit.