Abstract: A method and droplet selection device are provided for a continuous printer for selectively deflecting a droplet from a predetermined printing trajectory. In particular, a droplet selection device is provided for a continuous printer, comprising a droplet ejection system arranged to generate a continuous stream of droplets from a first fluid jetted out of an outlet channel; and a jet system arranged to generate a second jet for colliding the jet into the stream of droplets. The jet system comprises a deflector to selectively deflect the second jet into the continuous stream of droplets, so as to selectively deflect the droplets from a predefined printing trajectory.

Abstract: A method and droplet selection device are provided for a continuous printer for selectively ejecting a second droplet and to have it collided with a predefined first droplet. In particular, the device comprises a first droplet ejection system arranged to generate a continuous stream of first droplets from a fluid jetted out of an outlet channel; and a second droplet ejection system arranged to generate second droplets for colliding the second droplets into the first droplets so as to selectively deflect the first droplets from a predefined printing trajectory. The second droplet ejection system comprises a control circuit to selectively eject the second droplet and to have it collided with a predefined first droplet.

Abstract: The invention relates to an apparatus for ejecting droplets of a fluid material, comprising: a reservoir for storing the material, a channel connected with the reservoir, which is provided with at least one outflow opening from which, in use, flows a jet of the material breaking up into droplets, a pump for pressurizing the fluid material in the reservoir, so as to pass the material under pressure through the channel in the direction of the outflow opening, and a movable member provided in the reservoir, the member formed by a plurality of surfaces shaped to induce a pressure variation in the fluid material upstream of the outflow opening, for the purpose of obtaining the jet breaking up into droplets; the movable member mounted to have each opposed surface receiving identical hydrostatic pressure, to generate a net resulting zero force exerted on the movable member by the hydrostatic pressure. Accordingly, a simple mechanism is provided for providing multiple printing nozzles.

Abstract: Greenhouse system may comprise an illumination, a sensor, and a controller. The illumination and controller are arranged to vary the intensity and the spectral distribution of the light emitted by the illumination. The emitted light may be pulsed light, the pulse characteristics being variable by the controller in dependency of the output of the sensor. The controller is arranged to interpret the relevant variables measured by the sensor and to assess the actual and/or expected growth of the relevant plants, and to control the intensity and/or the spectral distribution of the light emitted by the illumination. Some sensors may be provided for measuring the intensity and/or spectral distribution of the actual light in the greenhouse, other sensors for measuring plant dimensions of the relevant plants or plant groups. The illumination may comprise a heat collector which can be connected to heating or air conditioning inside or outside the greenhouse.

Abstract: The invention relates to an apparatus for ejecting droplets of a fluid material, comprising: a reservoir for storing the material, a channel connected with the reservoir, which is provided with at least one outflow opening from which, in use, flows a jet of the material breaking up into droplets, a pump for pressurizing the fluid material in the reservoir, so as to pass the material under pressure through the channel in the direction of the outflow opening, and a movable member provided in the reservoir, the member formed by a plurality of surfaces shaped to induce a pressure variation in the fluid material upstream of the outflow opening, for the purpose of obtaining the jet breaking up into droplets; the movable member mounted to have each opposed surface receiving identical hydrostatic pressure, to generate a net resulting zero force exerted on the movable member by the hydrostatic pressure. Accordingly, a simple mechanism is provided for providing multiple printing nozzles.

Abstract: A method and droplet selection device are provided for a continuous printer for selectively deflecting a droplet from a predetermined printing trajectory. In particular, a droplet selection device is provided for a continuous printer, comprising a droplet ejection system arranged to generate a continuous stream of droplets from a first fluid jetted out of an outlet channel; and a jet system arranged to generate a second jet for colliding the jet into the stream of droplets. The jet system comprises a deflector to selectively deflect the second jet into the continuous stream of droplets, so as to selectively deflect the droplets from a predefined printing trajectory.

Abstract: Greenhouse system may comprise an illumination, a sensor, and a controller. The illumination and controller are arranged to vary the intensity and the spectral distribution of the light emitted by the illumination. The emitted light may be pulsed light, the pulse characteristics being variable by the controller in dependency of the output of the sensor. The controller are arranged to interpret the relevant variables measured by the sensor and to assess the actual and/or expected growth of the relevant plants, and to control the intensity and/or the spectral distribution of the light emitted by the illumination. Some sensors may be provided for measuring the intensity and/or spectral distribution of the actual light in the greenhouse, other sensors for measuring plant dimensions of the relevant plants or plant groups. The illumination may comprise a heat collection which can be connected to heating or air conditioning inside or outside the greenhouse.

Abstract: A device is provided for monitoring a wash process inside a mechanical washing apparatus, comprising sensor means for measuring physical and/or mechanical parameters of the wash process and recording means for recording the measured parameters within the device. This device comprises means for conducting a washing liquor past the sensor means and means for determining a certain contact time between the washing liquor and the sensor means.

Abstract: A device is provided for monitoring a wash process inside a mechanical washing apparatus, comprising sensor means for measuring physical and/or mechanical parameters of the wash process and recording means for recording the measured parameters within the device. This device comprises means for conducting a washing liquor past the sensor means and means for determining a certain contact time between the washing liquor and the sensor means.