A liquid ejecting apparatus including a liquid ejecting portion that ejects a liquid in a pressure chamber from a nozzle that communicates with the pressure chamber, a liquid supply flow path that supplies the liquid stored in a liquid storing portion to the liquid ejecting portion, a degas module provided in the liquid supply flow path, a vacuum degree adjustment mechanism configured to adjust a vacuum degree of the degas module, a state detecting mechanism configured to detect a state inside the pressure chamber, and a control portion that drives and controls the vacuum degree adjustment mechanism based on a detecting result of the state detecting mechanism.

A liquid ejecting apparatus includes a liquid supply path through which liquid is supplied to a liquid ejecting head, a liquid discharge path through which the liquid is discharged from the liquid ejecting head, a supply-side pressure adjustment mechanism that adjusts a pressure in a supply-side liquid chamber provided in the liquid supply path to a first pressure at which a gas-liquid interface formed at a nozzle of the liquid ejecting head is maintained, a discharge-side pressure adjustment valve that introduces fluid into a discharge-side liquid chamber when a pressure in the discharge-side liquid chamber provided in the liquid discharge path becomes a second pressure which is lower than the first pressure and at which the gas-liquid interface formed at the nozzle is maintained, and a flow mechanism that discharges the liquid in the liquid ejecting head toward the liquid discharge path via the discharge-side liquid chamber.

A print head of a binary continuous jet printer comprising: a plurality of nozzles for producing a plurality of ink jets in a cavity delimited by lateral walls, an upper wall and a lower wall, a sorting unit for separating drops or sections of one or more of the jets intended for printing from drops or sections that do not serve for printing, a slot, which passes through the lower wall, enabling the exit of ink drops intended for printing, a gutter for recovering drops or sections not intended for printing, a conduit for injecting gas into the cavity, and for making this gas circulate, in the cavity, to the plurality of nozzles for producing a plurality of ink jets in the cavity, then to the gutter.

A liquid ejecting apparatus including a liquid ejecting portion that ejects a liquid in a pressure chamber from a nozzle that communicates with the pressure chamber, a liquid supply flow path that supplies the liquid stored in a liquid storing portion to the liquid ejecting portion, a degas module provided in the liquid supply flow path, a vacuum degree adjustment mechanism configured to adjust a vacuum degree of the degas module, a state detecting mechanism configured to detect a state inside the pressure chamber, and a control portion that drives and controls the vacuum degree adjustment mechanism based on a detecting result of the state detecting mechanism.

An inkjet printing apparatus includes an ink jetting unit to jet ink to a substrate, a stage to movably support the substrate relative to the ink jetting unit, and a pair of air-conditioning units arranged at front and rear ends of the ink jetting unit in a direction in which the stage is moved, the air-conditioning units each including an air blowing unit and a suction unit.

A liquid ejecting apparatus includes a liquid supply path through which liquid is supplied to a liquid ejecting head, a liquid discharge path through which the liquid is discharged from the liquid ejecting head, a supply-side pressure adjustment mechanism that adjusts a pressure in a supply-side liquid chamber provided in the liquid supply path to a first pressure at which a gas-liquid interface formed at a nozzle of the liquid ejecting head is maintained, a discharge-side pressure adjustment valve that introduces fluid into a discharge-side liquid chamber when a pressure in the discharge-side liquid chamber provided in the liquid discharge path becomes a second pressure which is lower than the first pressure and at which the gas-liquid interface formed at the nozzle is maintained, and a flow mechanism that discharges the liquid in the liquid ejecting head toward the liquid discharge path via the discharge-side liquid chamber.

A drop-on-demand printing method comprising performing the following steps in a printing head: discharging a first primary drop (x21A) of a first liquid to move along a first path; discharging a second primary drop (x21B) of a second liquid to move along a second path; controlling the flight of the first primary drop (x21A) and the second primary drop (x21B) to combine the first primary drop with the second primary drop into a combined drop (x22) at a connection point (x32) within a reaction chamber within the printing head so that a chemical reaction is initiated within a controlled environment of the reaction chamber between the first liquid of the first primary drop and the second liquid of the second primary drop; and controlling the flight of the combined drop (x22) at least by means of a stream of gas (x71A, x71B).

A print head of a binary continuous jet printer comprising: a plurality of nozzles for producing a plurality of ink jets in a cavity delimited by lateral walls, an upper wall and a lower wall, a sorting unit for separating drops or sections of one or more of the jets intended for printing from drops or sections that do not serve for printing, a slot, which passes through the lower wall, enabling the exit of ink drops intended for printing, a gutter for recovering drops or sections not intended for printing, a conduit for injecting gas into the cavity, and for making this gas circulate, in the cavity, to the plurality of nozzles for producing a plurality of ink jets in the cavity, then to the gutter.

A valve comprises an orifice plate (1) having one or more orifices (4) through which a fluid may flow, and one or more piezo-electric elements (2). Each element (2) has a face positioned to contact the orifice plate at an orifice. Each element has a first state in which it abuts the plate to prevent flow of fluid through the associated orifice and a second state in which the face is spaced from the plate to allow flow through the associated orifice. A controller (50) selectively applies a first voltage to an elements to cause it to adopt the first state and applies a second voltage to the one or more elements to cause the elements to adopt the second state.

The invention relates to a print head of a binary continuous jet printer comprising: means for producing a plurality of ink jets in a cavity, delimited by lateral walls, and by an upper wall and a lower wall, means for separating drops or sections of one or more of said jets intended for printing from drops or sections that do not serve for printing, a slot, which passes through the lower wall, enabling the exit of ink drops intended for printing, a gutter for recovering drops or sections not intended for printing, means for injecting gas into the cavity, and for making this gas circulate, in the cavity, to the means for producing a plurality of ink jets in said cavity, then to the gutter.