Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.

Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.

Abstract: A liquid is reliably supplied to a liquid ejection head through a plurality of supply paths. The liquid is supplied to a plurality of areas of the liquid ejection head through the plurality of supply paths and a liquid ejection amount per unit time from the liquid ejection head is controlled so that a liquid flow amount of each of the areas becomes a predetermined flow amount or less.

Abstract: Multiple recording elements are disposed on one face of a recording element board, and a groove-shaped liquid supply channel is provided on the other face in common for the recording elements. Multiple supply ports passing through the recording element board and communicating the liquid supply channel with pressure chambers, and supply-side openings serving as supply ports of liquid to the liquid supply channel are further provided. When discharging liquid, the sum of pressure drop of the liquid from any supply-side opening to the supply port at a position farthest removed from that supply-side opening, and the pressure drop of the liquid at the supply port, is 5000 Pa or less.

Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.

Abstract: A liquid is reliably supplied to a liquid ejection head through a plurality of supply paths. The liquid is supplied to a plurality of areas of the liquid ejection head through the plurality of supply paths and a liquid ejection amount per unit time from the liquid ejection head is controlled so that a liquid flow amount of each of the areas becomes a predetermined flow amount or less.

Abstract: Multiple recording elements are disposed on one face of a recording element board, and a groove-shaped liquid supply channel is provided on the other face in common for the recording elements. Multiple supply ports passing through the recording element board and communicating the liquid supply channel with pressure chambers, and supply-side openings serving as supply ports of liquid to the liquid supply channel are further provided. When discharging liquid, the sum of pressure drop of the liquid from any supply-side opening to the supply port at a position farthest removed from that supply-side opening, and the pressure drop of the liquid at the supply port, is 5000 Pa or less.

Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.

Abstract: Provided is a nose for a supersonic flying object, which has a natural laminar flow nose shape capable of suppressing laminar-turbulent transition and drastically reducing a frictional drag. The nose for a supersonic flying object has a low resistive body shape symmetrical about a central axis as a base shape, wherein the base shape is approximately a cone shape having a linear, simple convex curve, or simple concave curve generatrix and a deformation element having a wavy shape is added to the base shape.

Abstract: Provided is a nose for a supersonic flying object, which has a natural laminar flow nose shape capable of suppressing laminar-turbulent transition and drastically reducing a frictional drag. The nose for a supersonic flying object has a low resistive body shape symmetrical about a central axis as a base shape, wherein the base shape is approximately a cone shape having a linear, simple convex curve, or simple concave curve generatrix and a deformation element having a wavy shape is added to the base shape.