Presence Check of Glass Bottles with Ultrasonic Sensor

Glass bottles of different shapes, colors and transparency are printed using digital inkjet printing in the beverage industry. Before the print heads start printing from different directions, it must first be checked that the bottles are present. This prevents the heads from spraying each other. For this purpose, the bottles are individually detected via ultrasonic sensors through an aperture on the neck of the bottle. When the presence of a bottle is confirmed, the print head is activated.