In a method of supplying chemical liquid using an ink jet head including a central portion and peripheral portions each having a first portion and a second portion, a first chemical liquid supply of a chemical liquid may be provided from the central portion onto a substrate, a second chemical liquid supply of the chemical liquid may be provided from the first portion onto a substrate, and a third chemical liquid supply of the chemical liquid may be provided from the second portion onto a substrate. The ink jet head may be moved over the substrate by a length of the peripheral portion. The first chemical liquid supply of the chemical liquid may be provided from the central portion onto a substrate, the second chemical liquid supply of the chemical liquid may be provided from the first portion onto a substrate, and the third chemical liquid supply of the chemical liquid may be provided from the second portion onto a substrate.

A control device for a printing execution unit including a printing head, a head drive unit, and a movement unit, wherein, in a case where a non-character object region is located at an upstream end of a partial region which is configured to be printed by a first partial printing: dots are formed in a first overlap region by both the first partial printing and a second partial printing, the first overlap region including the upstream end of the partial region, wherein, in a case where a character region is located at the upstream end of the partial region, dots are formed in a second overlap region by both the first partial printing and the second partial printing, the second overlap region including the upstream end of the partial region, and wherein a length of the second overlap region is shorter than a length of the first overlap region.

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 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.

The present disclosure provides an inkjet head device for inkjet printers, which includes a tubular base, a composite plate and an inkjet head assembly mounted on the composite plate; the composite plate includes a fiberglass plate and a plastic plate integrally connected to the fiberglass plate, the fiberglass plate is engaged with the open side of the base along an axial direction of the base, the plastic plate is located on a surface facing the base of the fiberglass plate. According to the inkjet head device for inkjet printers of the disclosure, the base plate is a composite plate formed by integrally connecting the fiberglass plate and the plastic plate, where the inkjet head assembly is mounted to form an integrated module, thus the disassembly, the assembly, or the maintenance are convenient.

The invention describes a method and apparatus for characterising EHT tripping events and thus discriminating between false trip events and those that warrant the printer being shut down.

The invention describes a method and apparatus for characterising EHT tripping events and thus discriminating between false trip events and those that warrant the printer being shut down.

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.

An inkjet printhead includes two groups of interleaved nozzles. First and second sets of drop-formation waveforms are associated with the groups of nozzles to selectively cause portions of a liquid jet to break off into drops. A timing delay device time-shifts the second-group waveforms relative to those associated with the first-group waveforms. A charging-electrode waveform having portions with first and second potentials is provided to a charging electrode. The waveform energies of the second-group waveforms is larger than the waveform energies of the corresponding first-group waveforms so that printing drops break off from the liquid jets while the charging-electrode is at the first potential, and non-printing drops break off from the liquid jets while the charging-electrode is at the second potential.

Embodiments of the present disclosure provide a printhead, a printing equipment and a printing method. The printhead includes: a primary liquid discharging assembly, including a plurality of primary liquid discharging nozzles for forming primary droplets; and a plurality of flow branching components below the primary liquid discharging assembly, and the plurality of flow branching components being in one-to-one correspondence with the plurality of primary liquid discharging nozzles, wherein each of the plurality of flow branching component is configured to be in contact with the primary droplet formed by the corresponding primary liquid discharging nozzle of the plurality of primary liquid discharging nozzles, and split each of the primary droplets into at least two branched droplets.