| 摘要 |
PURPOSE: An ink supply pressure keeping apparatus of a digital printing machine is provided to improve resolution and quality with keeping constant supply pressure of ink by adjusting potential energy of ink in an ink container. CONSTITUTION: An ink supply pressure keeping device of a digital printing machine is composed of ink containing bodies(103) connected to a supply pipe(102) to supply ink to a head, and to contain ink according to color; an adjuster(105) dividing plural containing spaces(106) to contain ink containing bodies individually, and combining with a body; and an elastic member(107) arranged in the lower part of the containing space. The pumping amount of ink is adjusted constantly by correcting the level of ink with the elastic member. The ink containing body moves up against difference of supply pressure according to the use amount of ink, and the potential energy increases. Printing quality and resolution are improved with adjusting the pumping amount of ink by keeping constant supply pressure.
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