发明名称 |
Energy efficient heater stack using DLC island |
摘要 |
The present invention is directed toward an improved heater chip for an ink jet printer. The heater chip has a diamond-like-carbon coating that functions as the cavitation and passivation layers of the heating elements on the heater chip. To improve the efficiency of the heater chip, the diamond-like-carbon coating is surrounded by a material that has a lower thermal conductivity than diamond. This surrounding layer limits thermal diffusion from the heating elements into the heater chip. A smoothing layer of tantalum is deposited over the diamond-like-carbon layer to insure that vaporization of the ink occurs at the ink's superheat limit. The diamond-like-carbon layer is preferably less than 8700 Angstroms in thickness such that less than 1 microjoule of energy is required to expel of ink droplet having a mass between 2-4 nanograms.
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申请公布号 |
US6637866(B1) |
申请公布日期 |
2003.10.28 |
申请号 |
US20020165534 |
申请日期 |
2002.06.07 |
申请人 |
LEXMARK INTERNATIONAL, INC. |
发明人 |
CORNELL ROBERT WILSON;PARISH GEORGE KEITH;POWERS JAMES HAROLD |
分类号 |
B41J2/14;(IPC1-7):B41J2/05 |
主分类号 |
B41J2/14 |
代理机构 |
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代理人 |
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地址 |
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