Apparatus and methods for maintaining optimum print quality in a

Details Apparatus and methods for maintaining optimum print quality in a Apparatus and methods for maintaining optimum print quality in a

1996-05-02

1998-12-08

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 23, 347 31, 347 34, B41J 2165

Patent

active

058476741

ABSTRACT:
Substantially optimum print quality is maintained for an ink jet printer which includes a nozzle plate having a number of orifice openings from which ink droplets for printing are sprayed. It is electronically determined when a particular orifice opening has been inactive for a predetermined period of time, and then an exercise print command is supplied to the orifice causing an ink droplet to dribble out of the orifice, rather than being sprayed out of the orifice, to keep the orifice clear for printing when a print command is supplied to it. The dribbling drops have a smaller size than the sprayed drops, and may be formed by supplying heater elements associated with the openings with pulses of shorter duration than normal. Dribbling ink droplets are automatically removed from the printer cartridge by one or more strands (e.g. continuous filament rayon thread) moving past the nozzle at a speed of between about 1-3 feet per hour while being positively guided.

REFERENCES:
patent: 4791435 (1988-12-01), Smith et al.
patent: 4849768 (1989-07-01), Graham
patent: 4970527 (1990-11-01), Gatten
patent: 5107276 (1992-04-01), Kneezel et al.
patent: 5109234 (1992-04-01), Otis, Jr. et al.
patent: 5140429 (1992-08-01), Ebinuma et al.
patent: 5168284 (1992-12-01), Yeung
patent: 5185615 (1993-02-01), Koitabashi et al.
patent: 5459505 (1995-10-01), Ballegaard et al.
patent: 5557306 (1996-09-01), Fukushima et al.
patent: 5557307 (1996-09-01), Paroff

Affiliated with

Also associated with

Rating

Apparatus and methods for maintaining optimum print quality in a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and methods for maintaining optimum print quality in a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and methods for maintaining optimum print quality in a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-182534