The disclosure relates to a piezo actuator device, preferably for controlling a dispensing of an application agent onto a component, including: at least one movable valve body for opening and closing at least one valve seat, at least one preferably pivotable actuating arm for actuating the at least one valve body, and a piezo actuator configured to move the at least one valve body to close and/or open the at least one valve seat.

Systems and methods are provided for adjusting a fluid dispenser for depositing drops of formable material. According to embodiments, a system obtains an image of a substrate including a film formed on the substrate by curing the formable material deposited by a first dispenser and a second dispenser. Intensity information is obtained for pixels of the image and a difference is determined between intensity values from a portion of the substrate on which the first dispenser deposited drops and intensity values from a portion on which the second dispenser deposited drops, the intensity values corresponding to a region of the substrate associated with a target thickness. Adjustments based on the intensity values are made to change a drop volume and a drop density for nozzles of the first dispenser and nozzles of the second dispenser.

A coating device according to an aspect of the present disclosure includes a coating device for forming a coating film on a base material, the coating device including a slit die including a manifold for storing a coating material, a slit for discharging the coating material, and a land disposed between the manifold and the slit to make the coating material flowing out of the manifold laminar flow, and a diffusion portion disposed in the manifold. The diffusion portion has a plurality of holes through which the coating material passes, and the plurality of holes make the flow rate of the coating material flowing from the manifold to the land uniform in the width direction of the coating device.