摘要:
A projection display includes a light source, a liquid crystal panel encapsulating a vertical alignment mode liquid crystal between a first substrate and a second substrate which are opposite to each other, the liquid crystal panel modulating light emitted from the light source, a longer axis of a molecule of the vertical alignment mode liquid crystal tilted from the normal direction of the first substrate, a projection lens projecting light modulated by the liquid crystal panel, a first polarization plate placed on an optical path from the light source to the liquid crystal panel, a second polarization plate placed on an optical path from the liquid crystal panel to the projection lens, an optical-compensation plate placed between the liquid crystal panel and the second polarization plate, and the optical-compensation plate including a plate-like base and a retardation plate formed on a surface of the plate-like base.
摘要:
A liquid discharging method includes applying pressure to liquid and discharging the liquid from a liquid discharging head. The viscosity of the liquid ranges from 8 to 20 millipascal seconds. The liquid discharging head includes a nozzle that discharges the liquid, a pressure chamber that causes a pressure change in the liquid so as to discharge the liquid from the nozzle, and a liquid supplying section that is in communication with, and supplies the liquid to, the pressure chamber. The pattern of the pressure change in the liquid varies to selectively control the amount of the liquid discharged from the nozzle between a predetermined amount and another smaller amount. The diameter of the nozzle ranges from 15 μm to 40 μm. The flow-channel length of the nozzle is set at a value that is smaller than the flow-channel length of the liquid supplying section multiplied by 0.2.
摘要:
A liquid ejecting head includes a first pressure chamber, a second pressure chamber provided at a side of the first pressure chamber, a vibration plate provided above the first pressure chamber and the second pressure chamber, a driving piezoelectric element provided above the first pressure chamber and above the vibration plate, and a non driving piezoelectric element provided above the second pressure chamber and above the vibration plate.
摘要:
A droplet discharging head includes a first through hole having an outlet for discharging of a liquid material and a second through hole having an inlet for injection of the liquid material, the second through hole having a protrusion on
摘要:
The dimensions/shape of ink flow channels in a recording head are designed so that when the inertance of nozzles is represented by Mn, the inertance of the ink supply channels is represented by Ms, the combined resistance obtained by combining the flow channel resistance in the nozzles, the flow channel resistance in pressure chambers, and the flow channel resistance in the supply channels is represented by R, and a unique vibration cycle of the pressure fluctuation arising in the ink within the pressure chambers is represented by Tc, the following Equation (A) holds true. √{square root over (MnMs)}≦RTc (A)
摘要:
A liquid ejecting head includes nozzles that eject liquid, pressurizing chambers communicating with respective nozzles, and liquid supply channels that supply the liquid to the pressurizing chambers. The liquid ejecting head ejects the liquid when a pressure generating unit changes the pressure within the pressurizing chambers. A cylindrical nozzle straight portion, in which the opening cross-sectional area is narrower than at other areas of the nozzle, is formed toward the pressurizing chamber from the nozzle opening in each nozzle. The opening cross-sectional area of the nozzle straight portion is Sn; the length thereof is Ln; the channel cross-sectional area of the liquid supply channel is Ss; the length from a common liquid chamber-side connection opening in the liquid supply channel to a pressurizing chamber-side connection opening is Ls. The ratio (Ln/Sn) is less than or equal to ½ of the ratio (Ls/Ss).
摘要:
A liquid ejecting apparatus includes a liquid ejecting head including pressure generation chambers communicating with nozzle openings for ejecting a liquid and pressure generation units which cause pressure variations in the pressure generation chambers. A driving unit supplies, to the pressure generation units, a driving signal including an expansion element for expanding the pressure generation chambers. A contraction element contracts the pressure generation chambers and a re-expansion element expands the pressure generation chambers before the liquid is ejected from the nozzle openings by the contraction element. The re-expansion element includes a primary expansion element at the contraction element side that expands the pressure generation chambers. A secondary expansion element has at least a variation portion having a voltage variation ratio different from a voltage variation ratio of the primary expansion element in continuation to the primary expansion element and expands the pressure generation chambers.