发明名称 |
Ink jet printing head and serial printer |
摘要 |
The printing head (12) comprises an insulating container (14) for conductive ink (16) which is expelled through a fine nozzle (18) when a voltage pulse is applied between an electrode (56, 57, 40) and a counter-electrode (22). Capillary passages (51, 50) lead to the nozzle (18) to allow formation of an ink meniscus (23) right up until exhaustion of the ink. A vent (69) keeps the pressure inside the container constant. The head (12) is snap fitted onto a carriage with a conductive plate abutted by the counter-electrode (20) and a spring contacting the external part (40) of the electrode. This plate and spring are fed by way of conductive elements sliding along conductive carriage guides.
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申请公布号 |
US4503442(A) |
申请公布日期 |
1985.03.05 |
申请号 |
US19820452845 |
申请日期 |
1982.12.23 |
申请人 |
ING. C. OLIVETTI & C., S.P.A. |
发明人 |
BARBERO, AQUILINO;REALIS LUC, ROBERTO |
分类号 |
B41J2/05;B41J2/175;B41J25/34;(IPC1-7):G01D15/16 |
主分类号 |
B41J2/05 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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