Digital manufacture of a microfluidic device

In view of the above, this invention is directed to printing methods including electrographic printing wherein toner and/or laminates form one or more multi-channeled layers, with a particular pattern. The multi-channeled layers are printed, such as by electrographic techniques, using the steps of forming a desired image on a receiver member and incorporating channels of toner that form a microfluidic item. In the microfluidic items the channels act as interconnects to transfer fluids between incorporated micro-devices such as pumps, devices, and sensors. The channels can also be designed to act as splitters ports, reservoirs, filters, and separators to allow a variety of specialty micro-devices to be developed with the printer.