Electricity: electrical systems and devices – Control circuits for electromagnetic devices – For relays or solenoids
Reexamination Certificate
2011-05-17
2011-05-17
Salce, Patrick (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
For relays or solenoids
C361S182000, C361S186000, C307S129000, C123S490000
Reexamination Certificate
active
07944673
ABSTRACT:
A coloring apparatus1includes a coloring nozzle31for spouting a coloring material, a signal generator53, and a controller19. The coloring nozzle31includes an electromagnetic valve51. The signal generator53outputs signals for spouting the coloring material from the coloring nozzle31to both a CPU62of the controller19and a driving circuit64. The CPU62outputs a signal for keeping the electromagnetic valve51open to the driving circuit64when a frequency of the signals from the signal generator53is higher than a specific frequency. When at least one of the signals from the CPU62and the signal generator53is inputted, the driving circuit64applies a spike voltage A and then applies a hold voltage B to a coil40. While at least one of the signals from the CPU62and the signal generator53is inputted, the driving circuit64applies a spike voltage A and then continuously applies a hold voltage B to a coil40.
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Supplementary European Search Report mailed Jun. 17, 2010 in corresponding application (3 pages).
Kamata Takeshi
Saito Sei
Sugimura Keigo
Yagi Kiyoshi
Kratz Quintos & Hanson, LLP
Salce Patrick
Yazaki -Corporation
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