发明名称 |
Control circuit for an ink jet printing element and a method of dimensioning and manufacture relating thereto. |
摘要 |
<p>A control circuit (17) applies a voltage pulse to a piezoelectric transducer (16) to create pressure in a chamber (10) open to an ink reservoir (14) at one end and closed by an ink nozzle (13) at the other. The control circuit (17) generates a pulse formed by one or two waves, each comprising a secondary portion delayed relative to the primary portion by a time which is double the reflection time that is characteristic of the chamber (10), thereby cancelling reflection of the drop explusion pressure. The form of the wave is determined by a series of variable resistors disposed in the circuit while the time is regulated by an element for regulating the period of oscillation of the circuit. Alternatively the form of the wave is recorded in digital form in an ROM addressed by a counter while the period of oscillation is regulated by acting on a timer for controlling the counter.</p> |
申请公布号 |
EP0200457(A1) |
申请公布日期 |
1986.11.05 |
申请号 |
EP19860303009 |
申请日期 |
1986.04.22 |
申请人 |
ING. C. OLIVETTI & C., S.P.A. |
发明人 |
SCARDOVI, ALESSANDRO |
分类号 |
B41J2/045;B41J2/055;(IPC1-7):B41J3/04;G01D15/18 |
主分类号 |
B41J2/045 |
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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