Multi-Stream Ink Applicator
Original Publication Date: 1985-Feb-01
Included in the Prior Art Database: 2005-Feb-18
This article relates generally to applicators or heads for applying inks or other fluids to moving substrates and more particularly to an applicator structure for applying a plurality of stripes of viscous ink or other fluid to a moving web. The figure shows a top view and cross-sectional side view of an applicator 1 which is adapted to apply four different colored viscous inks to a moving web. Applicator 1 consists of a metal bar 2 which is drilled through to a fixed depth to provide cylindrical holes 3 in as many places as the number of stripes required. Rectangular orifices 4 are then formed by electrodischarge machining on the surface of bar 2 to connect with holes 3. Orifices 4 are of sufficient cross-section to carry the maximum flow required at the desired web speed.