Seiko Epson Corporation

Screen Holdings Co., Ltd.

Toshiyuki Yamagata

Toshiki Usui

Kiyoomi Mitsuki

Naoki Yonekubo

A liquid ejecting head includes: a first nozzle array and a second nozzle array through which a non-fluorescent-colored liquid is discharged; and one or more fluorescent nozzle arrays through which respective fluorescent-colored liquids are discharged. Further, the fluorescent nozzle arrays are arranged between the first nozzle array and the second nozzle array.

Liquid ejecting head and liquid ejecting apparatus

A liquid discharge apparatus includes a drive waveform generator configured to generate a common drive waveform including, in one cycle, a first period having a discharge waveform including a first element for changing a potential from a first potential to a second potential and a second element for changing a potential from the second potential to a third potential, and a second period having a first potential change waveform for decreasing deformation of the piezoelectric device as compared to deformation of the piezoelectric device when the first potential is supplied, and a waveform selector configured to supply the discharge waveform to the piezoelectric device in the first discharge section that discharges the liquid, and supply the first potential change waveform to the piezoelectric device in the second discharge section that does not discharge the liquid.

Liquid discharge apparatus

A liquid ejection head configured to eject a liquid through nozzles includes plural head sections including a first head section and a second head section. Each of the plurality of head sections includes plural nozzle rows. One of the plural nozzle rows of the first head section is supplied with an undercoat-forming liquid containing an undercoat-forming pigment with an average particle diameter of at least 200 nm at a concentration of at least 7 percent by mass. Each of the plural nozzle rows of the second head section is supplied with an image-forming liquid containing an image-forming pigment with an average particle diameter of less than 200 nm at a concentration of less than 7 percent by mass.

Liquid ejection head, liquid ejection device, and liquid ejection method

A liquid ejecting device includes: a piezoelectric element that is deformed by applying at least one drive waveform among a plurality of drive waveforms to the piezoelectric element, the plurality of drive waveforms including a first drive waveform and a second drive waveform; a cavity that is filled with a liquid and is increased or decreased in internal pressure due to deformation of the piezoelectric element; a nozzle that communicates with the cavity, and ejects the liquid as a liquid droplet; and a selection section that selects at least one drive waveform from the plurality of drive waveforms, the liquid droplet including a first liquid droplet ejected when the first drive waveform has been selected, and a second liquid droplet ejected when the second drive waveform has been selected, an ejection volume of the first liquid droplet being almost equal to an ejection volume of the second liquid droplet.

Liquid ejecting device, head unit, and liquid ejecting method

A liquid ejecting apparatus has a configuration in which a drive pulse is selectable from a first ejection drive pulse adjusted to be generated at a first ejection timing with respect to an LAT signal, a second ejection drive pulse adjusted to be generated at a second ejection timing which is earlier than the first ejection timing with respect to the LAT signal, and a third ejection drive pulse adjusted to be generated at a third ejection timing which is later than the first ejection timing with respect to the LAT signal, and is selected according to a transporting speed of a recording medium.

Liquid ejecting apparatus and method of controlling liquid ejecting apparatus

A liquid ejecting apparatus has a configuration in which a drive pulse is selectable from a first ejection drive pulse adjusted to a first ejection timing with respect to an LAT signal, a second ejection drive pulse adjusted to a second ejection timing which is earlier than the first ejection timing with respect to the LAT signal, and a third ejection drive pulse adjusted to a third ejection timing which is later than the first ejection timing with respect to the LAT signal, and is selected according to a moving speed of a recording head in acceleration/deceleration sections of the recording head.

Growing community of inventors

Matsumoto, Japan

Toshiyuki Yamagata