Abstract: Apparatus for contacting a circuit board substrate with etching fluid or some other chemical includes a conveyor system comprised of upper and lower rotating disks for receiving and transporting the circuit board substrate while the substrate is contacted with fluid. The apparatus utilizes a modular drive system to drive the disks. The drive system is not exposed to the chemicals used to contact and process the circuit board substrate. The rotating disks can be removed from the apparatus without requiring disassembly of the modular drive system.

Abstract: A dynamic flood conveyor. The conveyor permits a chemical solution to be applied to the surface of a material such that the solution interacts with the material at a generally uniform rate at each point on the surface of the material. The apparatus promotes laminar flow of the channel solution over the surface of the material and uses segmented rollers to minimize the fluid loss from the flood conveyor.

Abstract: Method and apparatus for chemically treating vertically oriented electronic printed circuit board substrates. The apparatus includes a conveyor system for transporting vertically oriented circuit board substrates through a plurality of adjacent spray chambers. The conveyor system minimizes the amount of chemical solution which is carried from one chamber into an adjoining chamber and permits the utilization of hollow slack tubing to engage and transport the substrates.

Abstract: Apparatus for directing a stream of fluid against a pliant substrate panel traveling through the apparatus, the panel including a pair of opposed generally parallel planar surfaces co-terminating at the edge defining the periphery of the panel.