A liquid ejection head includes a substrate, an ejection orifice forming member having a plurality of ejection orifices for ejecting a liquid, and an intermediate layer provided between the substrate and the ejection orifice forming member. The substrate has a supply path for supplying the liquid to the plurality of ejection orifices, the ejection orifice forming member has a common liquid chamber communicating with the plurality of ejection orifices, the supply path and the common liquid chamber communicate with each other via a filter portion including a plurality of holes formed in the intermediate layer, the ejection orifice forming member has a wall portion that protrudes into the common liquid chamber at a position opposed to the filter portion, and the wall portion extends along a direction intersecting an arrangement direction of the plurality of ejection orifices.

A fluid ejector includes a nozzle layer, a body, an actuator and a membrane. The body includes a pumping chamber, a return channel, and a first passage fluidically connecting the pumping chamber to an entrance of the nozzle. A second passage fluidically connects the entrance of the nozzle to the return channel. The actuator is configured to cause fluid to flow out of the pumping chamber such that actuation of the actuator causes fluid to be ejected from the nozzle. The membrane is formed across and partially blocks at least one of the first passage, the second passage or the entrance of the nozzle. The membrane has at least one hole therethrough such that in operation of the fluid ejector fluid flows through the at least one hole in the membrane.

A liquid discharge device includes a liquid discharge head including a plurality of liquid chambers respectively communicating with a plurality of nozzles and circulating liquid therethrough. Each liquid chamber is provided with a pressure generator for discharging the liquid from a corresponding nozzle. The liquid discharge device further includes a waveform data memory to store drive waveform data including discharge drive waveform data for discharging the liquid according to image data and micro-vibration drive waveform data for causing a micro vibration of a meniscus of the liquid discharge head. The liquid discharge device further includes circuitry configured to generate a drive waveform based on the drive waveform data; apply, to the pressure generator, a discharge drive waveform based on the discharge drive waveform data, in a printing area; and apply, to the pressure generator, a micro-vibration drive waveform based on the micro-vibration drive waveform data, in a non-print area.

An ink jet recording apparatus includes an ink composition, an ink encasement in which the ink composition is encased, a recording head that ejects the ink composition, and a carriage configured to move the recording head back and forth. The carriage carries the ink encasement, with the ink encasement integrated with the carriage. The ink encasement has an ink fill port that opens and shuts as a port through which the ink composition is loaded. The ink composition contains a water-soluble dye and a polyhydric alcohol with a normal boiling point of 270° C. or above, with the percentage of the polyhydric alcohol being 26.0% by mass or less of the total amount of the ink composition.

In a state in which a liquid storage body is installed in a liquid ejecting apparatus, at least part of the upper edge of a liquid storage section and at least part of the lower edge of the liquid storage section are in contact with a case and a first inner surface of the liquid storage section and its second inner surface opposite to the first inner surface are separated from each other. The liquid storage section is structured so that as a liquid is supplied, the first inner surface and second inner surface gradually approach each other and, at the same time, come into contact with each other from top to bottom, forming, at the bottom of the interior of the liquid storage section, a liquid flow path through which the liquid flows from the liquid storage section to the liquid supply section.

There is provided an image recording apparatus including: a head; a driving element; a controller configured to output, to the driving element, a driving signal having a first voltage level or a second voltage level greater than the first voltage level; and a moving mechanism causing one of the recording medium and the head to move relative to the other of the recording medium and the head. The controller sets the voltage level of the driving signal to be the first voltage level in a case that the controller causes the head to move relative to the recording medium at the first velocity; and the controller sets the voltage level of the driving signal to be the second voltage level in a case that the controller causes the head to move relative to the recording medium at the second velocity.

Provided are a liquid ejection head capable of preventing deformation and breakage of a filter and a method of manufacturing the liquid ejection head. The liquid ejection head comprises: a substrate comprising a supply port through which to supply a liquid and an element configured to produce energy for ejecting the liquid; a resin layer comprising an ejection port through which the liquid is ejectable with the energy produced by the element, and a flow channel connecting the supply port and the ejection port; a filter disposed between the supply port and the flow channel; and a support portion supporting a surface of the filter on the supply port side and a surface of the filter on the flow channel side.

A liquid discharge head includes a plurality of nozzles through which a liquid is discharged, the plurality of nozzles arrayed in a nozzle array direction, a plurality of pressure chambers respectively communicating with the plurality of nozzles, a plurality of individual channels respectively communicating with the plurality of pressure chambers, a common channel communicating with each of the plurality of individual channels, an individual-channel member including the plurality of pressure chambers and the plurality of individual channels, a common-channel member including the common channel, and a partition between the individual-channel member and the common-channel member. The partition includes a plurality of through-hole regions each connecting the common channel and the plurality of individual channels, and a plurality of recoverably-deformable regions facing the common channel.

A droplet discharging apparatus that discharges liquid droplets from one or more nozzles based on drive waveforms, includes a memory and a processor configured to execute generating, as the drive waveforms, a first drive waveform, and a second drive waveform to change a drive voltage without discharging the liquid droplets; and controlling to output one set of drive waveforms including a predetermined number of instances of the first drive waveform and one instance of the second drive waveform.

A liquid ejection head including a liquid distribution path with a first liquid circulation flow path that is branched from the liquid distribution path and a second liquid circulation flow path joined to the liquid distribution path. A flow path wall sections the first and second liquid circulation flow paths and an ejection orifice is provided in each of the second liquid circulation flow path. Energy generating elements and liquid circulating elements are provided in each of the first and second liquid circulation flow paths. A structure is provided on an extension line of a center line of the first flow path wall and is placed at a position at which the structure overlaps the liquid distribution path.