US 6,981,760 B2 | ||
Ink jet head and ink jet printer | ||
Ryoichi Yamamoto, Kanagawa (Japan) | ||
Assigned to Fuji Photo Film Co., Ltd., Kanagawa (Japan) | ||
Filed on Sep. 27, 2002, as Appl. No. 10/255,585. | ||
Claims priority of application No. 2001-296299 (JP), filed on Sep. 27, 2001. | ||
Prior Publication US 2003/0058308 A1, Mar. 27, 2003 | ||
Int. Cl. B41J 2/02 (2006.01) |
U.S. Cl. 347—75 | 28 Claims |
1. An ink jet head comprising:
an inkjet nozzle from which an ink liquid drop is ejected onto a recording medium;
a substrate having a heat conductivity of 15 (W/m/K) or less;
a heat-transfer layer having a thickness of 10 μm or more which is formed on the substrate;
a heat insulating layer which is adjacently formed on top of the heat transfer layer; and
a heat generating heater which is adjacently formed on top of the heat insulating layer, said heat generating heater having:
a thin film resistor for boiling a part of ink to generate a bubble and allow the ink liquid drop to be ejected from the ink
jet nozzle by an expansion of the bubble; and
a thin film conductive electrode for supplying a current to the thin film resistor.
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