A liquid ejecting apparatus includes: a liquid ejecting head configured to eject liquid contained in a liquid container; a display portion configured to display information; a remaining amount detection portion configured to detect that a remaining amount of the liquid contained in the liquid container becomes less than a threshold value; and a control portion configured to control display of the display portion, in which the control portion causes the display portion to display a calculation remaining amount calculated based on an initial amount of storage of the liquid contained in the liquid container, a total discharge amount of the liquid discharged from the liquid ejecting head, and a correction amount corresponding to a use environment.

A droplet analysis unit capable of measuring and digitizing the meniscus shape, motion, and position of ink droplets and a substrate treatment apparatus including the droplet analysis unit are provided. The substrate treatment apparatus includes: a process treatment unit supporting a substrate while the substrate is being treated; an inkjet head unit treating the substrate by ejecting a substrate treatment liquid onto the substrate using a plurality of nozzles; a gantry unit moving the inkjet head unit over the substrate; and a droplet analysis unit measuring a meniscus in each of the nozzles that is associated with the substrate treatment liquid, wherein the droplet analysis unit measures and quantifies three-dimensional (3D) information regarding the meniscus.

An ink drop measurement pad is for measuring volumes and positions of inkjet drops that are sprayed and dropped in a constant volume from nozzles of a head of an inkjet device. The ink drop measurement pad includes a pattern part including a plurality of groove portions arranged at pitch intervals corresponding to those of a plurality of head nozzles and wall portions formed between the groove portions. The groove portions are uniformly formed so as to have the same cross-section throughout an entire longitudinal direction thereof.

In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.

A printing device includes a discharge control unit configured to, with a first movement of a printing head, among a one end side nozzle group using nozzles of one end side of a nozzle row, an other end side nozzle group using nozzles of an other end side of the nozzle row, and a center nozzle group using nozzles of the nozzle row that do not correspond to the one end side nozzle group and the other end side nozzle group, discharge ink on a designated area on a print medium from the nozzles included in the center nozzle group and the other end side nozzle group, and with a second movement which is the movement of the printing head the next time after the first movement, discharge the ink on the designated area from the nozzles included in the center nozzle group and the one end side nozzle group.

A printing apparatus is configured to execute first and second printing operations including forming a first layer by ejecting a first liquid to first and second regions, and forming a second layer by ejecting a second liquid on the first layer in the second region. In the first printing operation, the first liquid in a first predetermined amount is ejected to the first region and the first liquid in a second predetermined amount is ejected to the second region. In the second printing operation, the first liquid in a third predetermined amount is ejected to the first region and the first liquid in a fourth predetermined amount is ejected to the second region such that an absolute value of a difference between the fourth predetermined amount and the third predetermined amount is larger than that of a difference between the second predetermined amount and the first predetermined amount.

First, shading charts are printed on a surface of a recording medium. Then, a plurality of captured images is acquired for a region of the same density of the shading charts printed on the recording medium. At this time, the amounts of displacement in the position of the recording medium in the main scanning direction, which is the direction of arrangement of nozzles, are also detected. Then, one super-resolution image with a higher resolution than the captured images is generated on the basis of the captured images and the amounts of displacement in the position of the recording medium in the main scanning direction. Thereafter, a variable-density correction amount is calculated for each of the nozzles on the basis of the generated super-resolution image.

A liquid discharge apparatus includes a liquid discharge head and processing circuitry. The liquid discharge head is configured to discharge, to a foamable medium, liquid having a function of suppressing foaming of the medium to form irregularities. The processing circuitry is configured to hold condition information indicating a content defined by each of a plurality of conditions related to image formation at a time when the liquid forms a predetermined pattern image on the medium; and generate and output, for each condition of the plurality of conditions, an evaluation medium on which irregularities corresponding to the predetermined pattern image formed according to the condition are formed.

A liquid discharge apparatus includes a liquid discharge head, a conveyance device, an imaging device, and processing circuitry. The liquid discharge head is configured to discharge liquid to an object to form a liquid application surface. The conveyance device is configured to convey the object. The imaging device is configured to capture a plurality of positions of the object on which the liquid application surface is formed. The processing circuitry is configured to control discharge of the liquid by the liquid discharge head according to a plurality of pieces of different pattern data for forming the liquid application surface, control conveyance of the object by the conveyance device to form the liquid application surface corresponding to the pattern data, and determine a processing method of forming the liquid application surface according to captured images of the plurality of positions captured by the imaging device.

An element substrate, comprises: a plurality of printing elements configured to discharge liquid; a plurality of first driving elements disposed in correspondence with the plurality of printing elements and configured to drive the plurality of printing elements; a plurality of heating elements configured to heat the element substrate; a plurality of second driving elements disposed in correspondence with the plurality of heating elements and configured to drive the plurality of heating elements; and a delay unit that delays timing of driving the plurality of second driving elements to drive the plurality of second driving elements at a predetermined time difference when driving the plurality of second driving elements simultaneously.