Control method and apparatus for spray dampener

Details Control method and apparatus for spray dampener Control method and apparatus for spray dampener

1990-07-17

1991-08-13

Fisher, J. Reed

Printing

Processes

Condition responsive

101148, B41F 730, B41F 3316, B41L 2506

Patent

active

050386816

ABSTRACT:
A pulsed spray dampener system wherein, during low press speeds, nozzles are controlled to release pulses of dampening fluid having a fixed pulse width and fluid output is adjusted by varying the interval between dampener pulses. During high speed operation, the interval between pulses is fixed and pulse width is varied. Furthermore, the outermost nozzles of a spray bar are operated by dedicated control channels to permit better spray patterns.

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