Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1994-11-10
1999-05-25
Yockey, David F.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 20, B41J 204, B41J 2015
Patent
active
059073390
ABSTRACT:
A printhead for ink jet printing apparatus having a plurality of orifices for delivery of droplets of ink with delivery controlled by miniature solenoids, one for each orifice, each solenoid having a plunger directly engageable with a membrane to block flow of ink to a respective orifice and electromagnetically retractable from the membrane for flow of ink for delivery of a droplet of ink from the respective orifice, with provision for proportional valve action for each orifice. A removable and replaceable dot mask plate having a pattern of holes is sandwiched between a body and a back plate of the printhead and certain of the plungers of the solenoids are aligned with holes in the dot mask and, in a forward extended position, extend through the holes to engage the membrane. The dot mask masks or blocks other plungers of the printhead.
REFERENCES:
patent: 2712262 (1955-07-01), Knohl
patent: 2817380 (1957-12-01), Knohl
patent: 4378564 (1983-03-01), Cross et al.
patent: 4453652 (1984-06-01), Merkel et al.
patent: 4555719 (1985-11-01), Arway et al.
patent: 4576111 (1986-03-01), Slomianny
patent: 4723131 (1988-02-01), Droit
patent: 4737802 (1988-04-01), Mielke
patent: 4792817 (1988-12-01), Barney
patent: 4819009 (1989-04-01), Kniepkamp
patent: 4893101 (1990-01-01), Robitaille
patent: 4924241 (1990-05-01), Parks et al.
patent: 4985715 (1991-01-01), Cyphert et al.
patent: 5046702 (1991-09-01), Miyazawa et al.
patent: 5085402 (1992-02-01), O'Dell
patent: 5154394 (1992-10-01), DuHack
Grafstein, Paul and Schwartz, Otto B., "Pictorial Handbook of Technical Devices", Chemical Publishing Co., Inc., New York, pp. 2-3, 1971.
Droit Jimmy L.
Evans Edward B.
Porter Donald D.
Diagraph Corporation
Yockey David F.
LandOfFree
Ink jet printhead having solenoids controlling ink flow does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink jet printhead having solenoids controlling ink flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet printhead having solenoids controlling ink flow will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-403878