摘要:
An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir, a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.
摘要:
An ink jet print head (19) is provided which can improve throughput by increasing an ink ejection frequency and prevent crosstalk among a plurality of heat application portions (6), realizing a capability of printing high-quality images at high speed. One or more heat application portions (6) are arrayed alternately with a supply port (2A) in a predetermined direction (Y). An opening size (Wx) of the supply ports (2A) in a direction (X) perpendicular to the array direction (Y) of the heat application portions (6) is made greater than the length (Hx) in the direction (X) of electrothermal conversion elements (6).