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
OG exemplary drawing
 
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.