Oce-technologies B.v.

Ronald Berkhout

Hans Reinten

Mircea V Rasa

Marcus J Van Den Berg

Klaas Verzijl

Evgenij V Kuznetsov

Igor O Shklyarevskiy

Henricus C M Van Genuchten

Hendrikus J M Freriks

Godefridus Gerardus Gielen

Wilhelmus P J Classens

A droplet ejection device comprising a flow passage, a nozzle orifice formed in a wall of the flow passage, a circulation system for circulating a liquid through the flow passage, and an actuator system for generating a pressure wave in the liquid in the flow passage, wherein an obstruction member is arranged in the flow passage in a position opposite to the nozzle orifice and projecting towards the nozzle orifice.

Droplet ejection device

In a jetting device for ejecting droplets of a relatively hot fluid, a fluid chamber body is made of a heat resistant material and an inner surface of the fluid chamber body, the inner surface defining a fluid chamber of the jetting device, is wettable by the fluid. This configuration provides that no additional force needs to be applied for forcing the fluid into an orifice, i.e. a narrow tube leading towards a nozzle.

Device for ejecting droplets of a fluid having a high temperature

A method of making a number of adjacent ducts with a required duct side and duct spacing in a duct plate for an inkjet print-head. The method includes the steps of pressing a non-rotating toothed bit from a starting position into the duct plate, moving the bit and the duct plate relatively to one another in such manner that a first groove is cut in the duct plate and returning the bit and/or duct plate to the starting position. The bit is then moved relatively to the duct in a direction of the first groove in such a manner that a subsequent tooth of the bit situated next to the first tooth comes to lie just above the first groove. These steps are then repeated in such manner that the depth of the grooves correspond to the required duct depth.

Inkjet print-head

Growing community of inventors

Maasbree, Netherlands

Ronald Berkhout