Ink-jet head driving circuit

Details Ink-jet head driving circuit Ink-jet head driving circuit

1986-09-23

1987-12-22

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310317, G01D 1516

Patent

active

047149353

ABSTRACT:
An ink-jet head driver comprises: a pressure chamber filled with a recording liquid; a piezo-electric element as electrical/mechanical transducing means for enlarging the capacity of the pressure chamber at a first stage and contracting it in a second stage into the state before enlargement, thereby emitting the recording liquid; and a device for adjusting the time interval between the first and second stages to adjust the emitting velocity. The capacity of the pressure chamber is changed due to charge and discharge by a charging/discharging circuit, and charge/discharge time constants of this circuit are selectively controlled by a control unit. According to this driver, mixture of air into recording liquid in the ink-jet head when the piezo-electric element is expanded is prevented, and a variable range of a dot diameter of the recording liquid droplet can be extended, thereby improving recording quality.

REFERENCES:
patent: 4282535 (1981-08-01), Kern
patent: 4284996 (1981-08-01), Greve
patent: 4393384 (1983-07-01), Kyser
patent: 4398204 (1983-08-01), Dietrich
patent: 4471363 (1984-09-01), Hanaoka
patent: 4509059 (1985-04-01), Howkins
patent: 4521786 (1985-06-01), Bain
patent: 4546362 (1985-10-01), Koto

Affiliated with

Also associated with

Rating

Ink-jet head driving circuit 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 head driving circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink-jet head driving circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-820784