Printing – Planographic – Dampeners
Patent
1998-04-17
1999-03-30
Fisher, J. Reed
Printing
Planographic
Dampeners
101366, B41F 730, B41F 3108
Patent
active
058875212
ABSTRACT:
A dampening water supply device is capable of reducing spoilage upon initiation of printing after temporary stop when accumulated printing operation before temporary stop is large. The spray type dampening water supply device includes actuation signal output means for outputting an actuation signal corresponding to rotating operation of a rotary portion associated with operation of the printing press, counting means for counting a signal output from the actuation signal output means and outputting a signal at every predetermined number of count, nozzle operation control means set a plurality of control modes determined for differentiating supply amount of the dampening water from initiation of printing to a predetermined operating condition, for controlling operation of the nozzle means, control mode designating means for selectively designating the control mode of the nozzle operation control means at every occurrence of temporary stop and initiation of printing of operation of the printing press corresponding to an accumulated count value on the basis of the signal output from the counting means. Upon initiation of printing after temporary stop, the supply amount of the supply amount of the dampening water from initiation of printing up to a predetermined printing condition, is greater than a necessary amount for normal printing.
REFERENCES:
patent: 4649818 (1987-03-01), Switall et al.
patent: 4892035 (1990-01-01), Terzuolo
patent: 5398605 (1995-03-01), Tokiwa
Kawamori Hideo
Nakamura Daisuke
Fisher J. Reed
Kabushiki Kaisha Tokyo Kikai Seisakusho
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