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AssigneeSamsung Electronics Co., Ltd.
InventorsSung-joon Park, Seo-hyun Cho, Sang-cheol Ko, Jae-sik Min, Kyong-il Kim, Byung-ha Park, Tae-kyun Kim, Myung-song Jung
Estimating the term…
A bubble-jet type ink-jet printhead has a structure in which a base plate, a barrier wall, and a nozzle plate are stacked. The base plate includes a substrate on which a recess is formed to a predetermined depth, an adiabatic layer formed on the substrate, a heater which is formed on the adiabatic layer and generates a thermal energy, and a passivation layer which is formed on the heater and passivates the heater. The barrier wall is stacked on the base plate, defines an ink chamber, which is disposed on the recess and has a recessed bottom surface, and defines an ink passage which communicates with the ink chamber. The nozzle plate is stacked on the barrier wall, has nozzles through which ink is ejected, and is formed at a location corresponding to a center of the ink chamber. Since a height of the barrier wall surrounding the ink chamber is reduced by the recess, delamination caused by ink soaked into the barrier wall can be prevented, and print performances such as a traveling property in a straight direction of ink droplets and ejection velocity of ink droplets, are improved.
An ink-jet printhead comprising:
The ink-jet printhead of claim 4, wherein the depth of the recess is between 5 μm and 15 μm inclusive.
The ink-jet printhead of claim 6, wherein a thickness of the silicon oxide layer is between 1 μm and 5 μm inclusive.
An ink-jet printhead comprising:
An ink-jet printhead comprising:
Dependencies are inferred from the claim text.