| 摘要 |
<p>A liquid discharge apparatus is provided, which includes a nozzle, a pressure chamber that gives a pressure change to the liquid in order to discharge the liquid, a liquid supply portion that supplies the liquid to the pressure chamber, a device that gives the pressure change to the liquid in the pressure chamber, and a discharge pulse generating unit that generates a discharge pulse for operating the device in order to discharge the liquid, wherein a viscosity of the liquid is equal to or higher than 8 millipascal seconds, the nozzle has a first portion of which a liquid discharge side has an opening area that is smaller than that of a pressure chamber side and a second portion that communicates with an end portion of the discharge side of the first portion, an opening area of the second portion is equal to or smaller than 1/9 of the opening area of the pressure chamber side of the liquid supply portion, and the discharge pulse has a decompression portion that decompresses the liquid to lead a meniscus positioned in the second portion to the first portion and a compression portion that compresses the liquid to discharge the liquid before the meniscus that has been led to the first portion returns to the second-portion.</p> |
