Marker assembly for spray marking dot matrix characters and meth

Details Marker assembly for spray marking dot matrix characters and meth Marker assembly for spray marking dot matrix characters and meth

1990-03-22

1991-01-15

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

361152, B41J 207

Patent

active

049857150

ABSTRACT:
A linear array of solenoid actuated marker valve assemblies is contained in a housing configured as a manifold which carries marker fluid as well as nebulizing air supplies and a solvent distributing valve for use in clearing the air passages. All valve assemblies are accessible from the front surface of the device for ease of maintenance and are assembled in a manner assuring uniform and consistent valve stem travel advantageously eliminating the need for valve stem travel adjustment. The control system utilized with the valve assemblies provides both for an enhanced current input rate to the windings of the solenoid driven components, as well as an efficient and effective turn-off clamping procedure. This form of actuation of the solenoids achieves dynamically efficient and rapid turn-off and turn-on to the extent that the size of dots formed by the assembly can be provided having a broader range of diameters and these diameters can be adjusted remotely by a simple impedance variation. The features of the invention permit the application of characters at substantially enhanced production line speeds.

REFERENCES:
patent: 4350319 (1982-09-01), Kawata et al.
patent: 4819009 (1989-04-01), Kniepkamp
patent: 4875058 (1989-10-01), Vonasek
patent: 4878147 (1989-10-01), Oyama et al.

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