On demand type ink-jet print head having fluid control means

Details On demand type ink-jet print head having fluid control means On demand type ink-jet print head having fluid control means

1988-09-02

1989-11-21

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1516, B41J 304

Patent

active

048825964

ABSTRACT:
An on-demand type ink-jet print head requires only a small amount of energy for the droplet formation. A pressure chamber is filled with ink and a transducer or electromechanical conversion element applies a pressure on the ink pressure chamber. A fluid rectifier element (here, a check valve) is provided between the ink supply inlet and the pressure chamber so that a forwardly directed resistance is applied to ink flowing from the ink supply inlet to the pressure chamber and a reversely directed resistance is applied to ink flowing from the pressure chamber to the ink supply inlet. A fluid resistance element (here, a plate with many pinholes) is provided between the pressure chamber and the nozzle. The resistance of the fluid resistance element is greater than the forwardly directed resistance of the rectifier element.

REFERENCES:
patent: 4216477 (1980-08-01), Matsuda
patent: 4233610 (1980-11-01), Fischbeck
patent: 4379304 (1983-04-01), Heinzl
patent: 4509059 (1985-04-01), Howkins
patent: 4514742 (1985-04-01), Suga

Affiliated with

Also associated with

Rating

On demand type ink-jet print head having fluid control means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On demand type ink-jet print head having fluid control means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On demand type ink-jet print head having fluid control means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1428861