| 摘要 |
A pressure of the ink ejection is related in terms of a speed and temperature in expression P= a asterisk (rn(T) asterisk V<2> + b asterisk (m)T) asterisk V + (rn(T) asterisk g asterisk h. In the expression H is sensed pressure, (rn(T) and (mn(T) are ink jet characteristic curve; a and b characteristic value of ink jet circuit; g - is the acceleration of the mass. Varying the ejection speed the resulting pressure is measured using determined coefficients to achieve corrective actions. A reservoir (10) contains volume of ink (11), the remaining volume (12) is filled of air. A pipe (13) joins the reservoir ( with a printing head (14). Solvent addition devices (16,17) are controlled by valves (26,27) on signals from pressure, temperatu sensors (20-22) and an ejection speed sensor (25) at the exit of the head (14). A control element (18) electrically controls a pressure regulator (23) and electrically controlled condenser (24). |
