Method and apparatus for mixing and supplying fountain solution

Details Method and apparatus for mixing and supplying fountain solution Method and apparatus for mixing and supplying fountain solution

1988-04-18

1990-11-13

Nilson, Robert G.

Fluid handling

Processes

With control of flow by a condition or characteristic of a...

137 5, 137 91, 137 93, 137563, G05D 1106, G05D 1108

Patent

active

049694804

ABSTRACT:
A fountain solution supply system for mixing and supplying a fountain solution, having two or more ingredients mixed in precise concentrations, from a reservoir to a printing press. The system includes a high-capacity pump connected to the reservoir. Substantially more than half of the flow of the fountain solution from the pump is directed through a high pressure line to operate a fluidic pump and then returned to the reservoir. The remainder of the fountain solution is directed through a low pressure line to the printing press. The return line from the printing press is connected to a primary intake of the fluidic pump. An electrically-activated, solenoid valve is connected between a secondary intake of the fluidic pump and a supply of at least one of the ingredients of the solution. Control means sense the concentration of the ingredient in the solution and control the actuation of the valve in response to the concentration of the ingredient in the fountain solution to maintain its concentration at a pre-set level.

REFERENCES:
patent: 3376883 (1968-04-01), Douty
patent: 3557817 (1971-01-01), Royse
patent: 3947356 (1976-03-01), Werhli
patent: 4119989 (1978-10-01), Carvalko
patent: 4483357 (1984-11-01), Rao

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