| 摘要 |
<p>An apparatus for controlling the feed of writing fluid to a writing device comprises a writing fluid supply container, a source of compressed air and a first valve in a first conduit between the source of compressed air and the supply container, the first valve being adjustable depending on the working condition of the writing device. A second valve is provided in a second conduit between the supply container and the writing device, the second valve being automatically self-regulating depending on the pressure of the writing fluid at the writing device, whereby droplet formation is prevented.</p> |
