A system includes a print head including multiple nozzles formed in a bottom surface of the print head. The nozzles are configured to eject a liquid onto a substrate. The system includes a gas flow module configured to provide a flow of gas through a gap between the bottom surface of the print head and the substrate. The gas flow module can include one or more gas nozzles configured to inject gas into the gap. The gas flow module can be configured to apply a suction to the gap.

A system includes a print head including multiple nozzles formed in a bottom surface of the print head. The nozzles are configured to eject a liquid onto a substrate. The system includes a gas flow module configured to provide a flow of gas through a gap between the bottom surface of the print head and the substrate. The gas flow module can include one or more gas nozzles configured to inject gas into the gap. The gas flow module can be configured to apply a suction to the gap.

The invention relates to a method for detecting the presence of a jet from a multi-jet print head of an inkjet printer comprising a plurality of nozzles (4), at least one 1.sup.st and one 2nd deviation electrode (14a, 14b) for each jet, in which: the inkjet is produced by one of the nozzles, at a frequency f.sub.stim1, and is then charged by a voltage V.sub.THT at a frequency f.sub.THT, f.sub.THT not being an integer multiple or sub-multiple of f.sub.stim1; a jet charge signal is detected, derived from sampling, at frequency f.sub.stim1, of the voltage at frequency f.sub.THT, at least one spectral component of this signal being used to detect the presence of the jet.

The invention relates to a method for detecting the presence of a jet from a multi-jet print head of an inkjet printer comprising a plurality of nozzles (4), at least one 1.sup.st and one 2nd deviation electrode (14a, 14b) for each jet, in which: the inkjet is produced by one of the nozzles, at a frequency f.sub.stim1, and is then charged by a voltage V.sub.THT at a frequency f.sub.THT, f.sub.THT not being an integer multiple or sub-multiple of f.sub.stim1; a jet charge signal is detected, derived from sampling, at frequency f.sub.stim1, of the voltage at frequency f.sub.THT, at least one spectral component of this signal being used to detect the presence of the jet.

To provide a printer that can suppress self-jet generated by ejection of ink from a nozzle row and can improve printing quality.

A printer includes an ink jet head 11 that ejects liquid from a nozzle row 14 being open in a liquid ejection surface 12 arranged on a surface facing a printing medium 3; a plasma actuator 20; and a controller 30 that controls the ink jet head 11 and the plasma actuator 20. When the nozzle row 14 ejects liquid to the printing medium 3, the controller 30 drives the plasma actuator 20 to generate an airflow between the liquid ejection surface 12 and the printing medium 3.

A production system such as an inkjet printer system includes a plurality of communication distribution devices connected in a daisy chain arrangement. A plurality of secondary devices, such as printhead electronics boards for inkjet printheads, is connected to each of the communication distribution devices. A first communication distribution device which is connected to a system controller assigns a communication address to itself from a first set of communication address and assigns communication addresses to its connected secondary devices from a second set of communication addresses. It then communicates information to the next communication distribution device specifying the next available communication addresses. This process continues down the chain of communication distribution devices. The assigned communication addresses are then transmitted to the system controller. The assigned communication addresses enable the system controller to determine the relative physical locations of the communication distribution devices and secondary devices.

A recording element substrate includes a substrate, a plurality of energy generating elements arranged on the substrate to form an element row, a plurality of supply ports arranged along the element row to form a supply port row, and a plurality of supply paths extending from the plurality of supply ports along the thickness direction of the substrate, wherein a plurality of beam portions disposed between adjacent supply ports in the direction of the supply port row has a plurality of conductor layers in which a conductor layer including a power supply conductor connected to the energy generating elements and a conductor layer including a ground conductor connected to the energy generating elements, are stacked along the thickness direction of the substrate, and wherein at least one of the plurality of conductor layers is occupied by one power supply conductor or one ground conductor.

A system includes a print head including multiple nozzles formed in a bottom surface of the print head. The nozzles are configured to eject a liquid onto a substrate. The system includes a gas flow module configured to provide a flow of gas through a gap between the bottom surface of the print head and the substrate. The gas flow module can include one or more gas nozzles configured to inject gas into the gap. The gas flow module can be configured to apply a suction to the gap.

A system includes a print head including multiple nozzles formed in a bottom surface of the print head. The nozzles are configured to eject a liquid onto a substrate. The system includes a gas flow module configured to provide a flow of gas through a gap between the bottom surface of the print head and the substrate. The gas flow module can include one or more gas nozzles configured to inject gas into the gap. The gas flow module can be configured to apply a suction to the gap.

A recording apparatus includes a recording head which ejects different types of ink on a medium, a reuse collection ink tank which collects and stores ink ejected from the recording head for each of ink types, a virgin ink tube which supplies virgin ink to the reuse collection ink tank according to the amount of the ink collected from the recording head to the reuse collection ink tank, a diluted solution tube which supplies a diluted solution to the reuse collection ink tank according to viscosity of the ink of the reuse collection ink tank, and a return tube which supplies the ink stored in the reuse collection ink tank to the recording head.