Writing device control apparatus
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United States of America Patent
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Apr 13, 1982
Grant Date -
N/A
app pub date -
Jun 13, 1979
filing date -
Jun 23, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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