Techniques for improving droplet uniformity in acoustic ink prin

Details Techniques for improving droplet uniformity in acoustic ink prin Techniques for improving droplet uniformity in acoustic ink prin

1992-08-18

1995-02-14

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

B41J 204

Patent

active

053899563

ABSTRACT:
Techniques for improving droplet uniformity in acoustic ink printing. Row to row variations in an average droplet characteristic are reduced by controlling the electric power applied to the droplet ejectors of the individual rows. By applying the proper power to each row, the average droplet characteristic from the individual rows are made substantially. Another technique varies the efficiency of the individual droplet ejectors by physically trimming (such as with a laser) one or more of its components. Trimming may be performed on a droplet ejector's transducer, varactor, one or more associated resistors, or one or more capacitors. Yet another technique controls droplet ejector efficiency by electrically controlling the capacitance of a varactor associated with each droplet ejector, and thus each droplet ejector's efficiency. The voltage applied to each varactor may be controlled as a function of its column (to improve column to column uniformity), row (to improve row to row uniformity) or as a function of its column and row (to control the efficiency of the individual droplet ejector).

REFERENCES:
patent: 4308547 (1981-12-01), Lovelady et al.
patent: 4697195 (1987-09-01), Quate et al.
patent: 4750010 (1988-06-01), Ayers et al.
patent: 4782350 (1988-11-01), Smith et al.
patent: 5028937 (1991-07-01), Khuri-Yakub et al.
patent: 5206667 (1993-04-01), Yano
patent: 5212497 (1993-05-01), Stanley et al.

Affiliated with

Also associated with

Rating

Techniques for improving droplet uniformity in acoustic ink prin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Techniques for improving droplet uniformity in acoustic ink prin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Techniques for improving droplet uniformity in acoustic ink prin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-290652